testo 340
Flue gas analyser
Instruction manualen2General notes
Please read this documentation through carefully and familiarise yourself with the operation of the product before putting it to use. Keep this document to hand so that you canrefer to it when necessary.
This document describes the country-specific version GB of the testo 340 measuring
instrument.
Identification
SymbolMeaning
Comments
Warning advice: Warning!
Read the warning advice carefully and take the speciSerious physical injury could be caused if the speci- fied precautionary measures!
fied precautionary measures are not taken.
Warning advice: Caution!
Read the warning advice carefully and take the speciSlight physical injury or damage to equipment could fied precautionary measures!
occur if the specified precautionary measures are
not taken.

Text

OK

Þ xyz

Important note.

Please take particular notice.

Text appears on the instrument‘s display-

Key

Press the key.

Function key with the function “OK”.

Press function key.

Short form for operating steps.

See Short form, p. 3.

3
Short form
This document uses a short form for describing steps(e.g. calling up a function).
Example: Calling up the Flue gas function
Short form:OKÝ Measurements Ý

(1)

(2)

(3)

Ý Flue gas Ý(4)Steps required:
1 Open the Main menu:.

2 Select Measurements menu:
3 Confirm selection:

OK

4 Select Flue gas menu:
5 Confirm selection:

OK

,

.
,
.

.

.

(5)

OK

4

Content
General notes....................................................................................................................................... 2Content.................................................................................................................................................. 4A.

Safety advice............................................................................................................................. 7

B.

Intended purpose................................................................................................................... 9C.

Product description..............................................................................................................10
C.1.1
C.1.2
C.1.3
C.1.4
C.1.5
C.1.6
C.1.7

D.
E.

Overview................................................................................................................10
Keypad....................................................................................................................11
Display.....................................................................................................................11
Instrument connections...................................................................................12
Interfaces................................................................................................................13
Components.........................................................................................................13
Carrying strap ......................................................................................................14

C.2 Modular flue gas probe..........................................................................................14
Commissioning......................................................................................................................14
Operation.................................................................................................................................15
E.1 Mains unit/rechargeable battery........................................................................15
E.1.1
E.1.2
E.1.3

E.2
E.3
E.4

Changing the battery........................................................................................15
Charging batteries..............................................................................................16
Operation with the mains unit.......................................................................16

Probes/sensors..........................................................................................................17

E.2.1
E.2.2

Connecting probes/sensors............................................................................17
Replacing the probe module..........................................................................18

Regular care................................................................................................................18

E.3.1
E.3.2

Condensate trap..................................................................................................18
Checking/replacing the particle filter..........................................................19

Basic operating steps..............................................................................................19

E.4.1
E.4.2
E.4.3
E.4.4
E.4.5
E.4.6
E.4.7

Switching the measuring instrument on...................................................19
Calling up the function ....................................................................................20
Entering values....................................................................................................20
Printing data.........................................................................................................21
Saving data............................................................................................................21
Confirming an error message.........................................................................21
Switching the measuring instrument off...................................................21

5

E.5

F.

Memory........................................................................................................................22

E.5.1
E.5.2
E.5.3
E.5.4

E.6 Instrument diagnosis..............................................................................................26
Configuration..........................................................................................................................27
F.1 Instrument settings.................................................................................................27
F.1.1
F.1.2
F.1.3
F.1.4
F.1.5
F.1.6
F.1.7
F.1.8

G.

Display edit............................................................................................................27
Printer......................................................................................................................28
Start keys edit.......................................................................................................29
AutoOff...................................................................................................................29
Communication...................................................................................................30
Date / Time............................................................................................................30
Language...............................................................................................................30
Dilution settings..................................................................................................30

F.2 Sensor settings..........................................................................................................33
F.3 Fuels..............................................................................................................................36
Measuring................................................................................................................................37
G.1 Preparing measurements......................................................................................37
G.1.1
G.1.2
G.1.3
G.1.4

G.2

H.

Folders.....................................................................................................................22
Location..................................................................................................................23
Protocols................................................................................................................24
Extras Memory.....................................................................................................25

Zeroing phases....................................................................................................36
Using the modular flue gas probe................................................................38
Configuring the reading display....................................................................38
Set location/fuel..................................................................................................38

Measurements...........................................................................................................39

G.2.1
G.2.2
G.2.3
G.2.4
G.2.5
G.2.6
G.2.7
G.2.8

Flue gas, Flue gas + m/s, Flue gas + Dp2....................................................39
Program..................................................................................................................40
Draught...................................................................................................................41
Smoke# /HCT........................................................................................................41
Gas flow rate.........................................................................................................42
Oil flow rate...........................................................................................................43m/s............................................................................................................................43
Δp2...........................................................................................................................44

Transferring data...................................................................................................................45
H.1 Protocol printer.........................................................................................................45

6

I.

J.
K.

Care and maintenance........................................................................................................46
I.1
Cleaning the measuring instrument.................................................................46
I.2
Replacing sensors.....................................................................................................46
I.3
Filter for CO, H2 - comp., NO exchanging sensors.......................................47
I.4
Recalibrating sensors..............................................................................................48
I.5
Cleaning the modular flue gas probe...............................................................48
I.6
Replacing probe preliminary filter.....................................................................48
I.7
Replacing thermocouple.......................................................................................48
Questions and answers.......................................................................................................49
Technical data........................................................................................................................50
K.1 Standards and tests.................................................................................................50
K.2 Measuring ranges and accuracies......................................................................50
K.3 Other instrument data............................................................................................51
K.4 EC declaration of conformity...............................................................................51
K.5 Principles of calculation.........................................................................................53
K.5.1
K.5.2

L.

Fuel parameters...................................................................................................53
Calculation formulae.........................................................................................53

K.6 Recommended rinsing times...............................................................................56
K.7 Cross-sensitivities.....................................................................................................57
Accessories/spare parts......................................................................................................58

7

A. Safety advice
Acid in the sensors. May cause chemical burns.
Do not open the sensors. Eye contact: Rinse the affected eye thoroughly under running water for 10 minutes, keeping the eyelids wide open and protecting the unaffected eye. Remove contact lenses wherever possible.
Acid in the sensor filters. May cause irritation to the skin, eyes or respiratory tract.
Do not open the sensor filters. Eye contact: Rinse the affected eye thoroughly under
running water for 10 minutes, keeping the eyelids wide open and protecting the unaffected eye. Remove contact lenses wherever possible.
Skin contact: Remove the injured person’s contaminated clothing, ensuring self-protection. Rinse affected skin areas under running water for at least 10 minutes.
Inhalation: Move to fresh air and make sure that breathing is unrestricted.
Ingestion: Rinse mouth out and spit out liquid. If conscious, drink 1 glass of water(approx. 200 ml). Do not induce vomiting.
Avoid electrical hazards:
Never use the measuring instrument and probes to measure on or near live parts!
Protect the measuring instrument:
Never store the measuring instrument / sensors together with solvents(e.g. acetone). Do not use any desiccants.
Product with Bluetooth® (Option)
Changes or modifications, which are not expressly approved by the responsible official
body, can lead to a withdrawal of operating permission.

Interference with data transfer can be caused by instruments which transmit on
the same ISM band, e.g. microwave ovens, ZigBee
The use of radio connections is not allowed in e.g. aeroplanes and hospitals. For thisreason, the following point must be checked before entering:

Deactivate Bluetooth function
Ý Inst’ settings ÝOKÝ Communication ÝOKÝSelect IrDA

OK

8

Product safety / preserving warranty claims:
Operate the measuring instrument only within the parameters specified in the Technical data.
Handle the measuring instrument properly and according to its intended purpose.
Never apply force!
Temperatures given on probes/sensors relate only to the measuring range of thesensors. Do not expose handles and feed lines to any temperatures in excess of 70 °C
unless they are expressly permitted for higher temperatures.
Open the measuring instrument only when this is expressly described in the instruction manual for maintenance purposes.
Carry out only the maintenance and repair work that is described in the instruction
manual. Follow the prescribed steps exactly. For safety reasons, use only original
spare parts from testo.
	 Any additional work must only be carried out by authorised personnel. testo willother­wise refuse to accept responsibility for the proper functioning of the measuring
instrument after repair and for the validity of certifications.
Ensure correct disposal:
Dispose of defective rechargeable batteries and spent batteries at the collection
points provided for that purpose.
Send the measuring instrument directly to us at the end of its useful life. We will ensure that it is disposed of in an environmentally friendly manner.

9

B. Intended purpose
This chapter describes the areas of application for which the measuring instrument isintended.
The testo 340 is a handheld measuring instrument used in professional flue gas analysisfor:· Engineers servicing/monitoring industrial combustion plants (process systems, power
stations)· Emissions inspectors· Engine manufacturers and operators· Service engineers/mechanics of burner/boiler manufacturers in the industrial sector
Typical measuring tasks and particular characteristics of the testo 340 include:· Measurement on industrial engines (CO / NO dilution)· Measurement on gas turbines (high precision CO and NO plus optional dilution)· Emissions measurement (integrated flow speed and differential pressure measurement)
testo guarantees the functionality of its products when used in accordance with theirintended purpose. This guarantee does not apply to features of testo products incombination with unauthorised third-party products. Competitor products are notauthorised by testo.
As is common practice, testo generally excludes support, warranty or guarantee
claims relating to functionality that has not been guaranteed by testo as part of the
product offered. Claims shall also be excluded in the event of improper use or handling of the products, e.g. in combination with unauthorised third-party products.
Further warranty terms: see website www.testo.com/warranty
testo 340 should not be used:· for continuous measurements > 2 h· as a safety (alarm) instrument
testo 340 with the Bluetooth option: The use of the wireless module is subject to theregulations and stipulations of the respective country of use, and the module may
only be used in countries for which a country certification has been granted. The userand every owner has the obligation to adhere to these regulations and prerequisites
for use, and acknowledges that the re-sale, export, import etc. in particular in countries without wireless permits, is his responsibility.

10

C. Product description
This chapter provides an overview of the individual components of the product.

C.1 Measuring instrument
C.1.1

Overview
À Infrared interface
Do not point infrared beam at
people‘s eyes!
Á Interfaces: USB, PS2
Â On/Off switch
Ã Condensate trap (on rear)Ä	Attachment for carrying strap (on rear)Å Magnetic holders (on rear)
WARNING! Magnetic field!
May be harmful to those with pacemakers> Keep a minimum distance of 20 cm
betweenpacemakerandinstrument.
ATTENTION! Magnetic field!
Damage to other devices!
> Keep a safe distance away fromproducts which could be damaged by the effects of magnetism(e.g. monitors, computers or
credit cards)..

Æ DisplayÇ Service cover (on rear)È Keypad
É Instrument connections: flue gas probe,
sensor, pressure probe, mains unit, gas
outlet11

C.1.2

KeypadKey

FunctionsSwitch measuring instrument on/off
Function key (orange, 3x), relevant function is shown on the display
Scroll up, increase value
Scroll down, reduce value
Back, cancel function
 pen Main menu: press briefly (changed settigs are stored, measurement values are carried over into the menu
O
Flue gas); open Measurements menu: press and hold down for 2s (changed settigs are stored, measurement
values are carried over into the menu Flue gas)Open Inst’ diagnosis menu hange display light: display light stays on permanently or display light is switched on for 10s every time the key
Cis pressed.

C.1.3

Display

Depending on the menu that is active, the display shows a variety of elements.
Header (active in all views)

À Warning symbol (only if there is a device error; 				

device errors are displayed in the Inst’ diagnosis

		 menu).

À
SymbolÁ

Á Active folder and location.
Â Power supply symbol:

ÂCharacteristic
Mains operation

SymbolCharacteristic
Rech. battery operation, capacity: 26 - 50 %Rech. battery operation, capacity: 76 - 100 %Rech. battery operation, capacity: 6 - 25 %Rech. battery operation, capacity: 51 - 75 %Rech. battery operation, capacity: 0 - 5 %

À
Á
Â

Ã

Function select viewÀ Active menu, activated fuelÁ	Function selection field:
The selected function has a grey background.
Unavailable functions are written in grey typeÂ Scroll bar
Ã Function keys for entering commands

12
Settings viewÀÁÂÀ Active menu
Á Function fields for entering commands
Â Scroll bar
Ã	Selection field for adjustable values:

The selected value is shown with a grey background. Unavailable values are written in grey type.
Ä Function keys for entering commands

ÃÄ
Measuring viewÀÁÂÀ	Active menu, depending on the selected function:

Additional information (e.g. activated fuel, date andtime)Á Scroll bar
Â Display field for readings, parametersÃ Function keys for entering commands

Ã

C.1.4

Instrument connections
À Sensor socketÁ Flue gas socketÂ Mains unit socketÃ	Pressure socket p+Ä	Pressure socket pÅ Gas outlet

13

C.1.5

InterfacesÀ	USB interface:connection to PCÁ	PS2 interface:

Adapter for automatic furnacesÂ	Ir/IrDA interface
Ã Bluetooth interface

C.1.6

Components
À Rechargeable battery
Á Measuring gas pump
Â Sensor slot 1: O2
Ã Sensor slot 2: CO, COlow, NO, NOlow, SO2
Ä Sensor slot 3: NO, NOlow, NO2
Å Sensor slot 4: CO, COlow, SO2, NO2

14

C.1.7

Carrying strap

To secure the carrying strap:1	Place the measuring instrument on its front.
2	Attach carrying strap in the fixture (À).

C.2

Modular flue gas probe					À	Removable filter chamber with window and particleÀÄ
filterÅ					Á
Probe handle					Â
Connecting leadÃÁ					Ã Connecting plug for measuring instrument					Ä
Probe module releaseÂ					Å Probe module

D. Commissioning
This chapter describes the steps required to commission the product.
Remove the protective film from the display.
The measuring instrument is supplied with a rechargeable battery already fitted.
Charge the rechargeable battery up fully before using the measuring instrument(see Charging batteries, p. 16).

15

E. Operation
This chapter describes the steps that have to be executed frequently when using the
product.
Please read this chapter carefully. The following chapters of this document will assume you are already familiar with the content of this chapter.

E.1

Mains unit/rechargeable battery

If the mains unit is connected, the measuring instrument is automatically powered fromthe mains unit. It is not possible to charge the rechargeable battery in the measuring
instrument during operation.

E.1.1

Changing the battery

The measuring instrument must not be connected to a mains socket via the mains
unit. The measuring instrument must be switched off. Change the rechargeable battery within 60 minutes, otherwise instrument settings (e.g. date/time) will be lost.
1 Place the measuring instrument on its front.
2	Loosen screws with a Philips screwdriver, releaseclip in the direction of the arrow and remove service cover.
3	Open the rechargeable battery compartment:
Press the orange key (À) and push in the directionof the arrow (Á).
4	Remove the rechargeable battery and insert a newone. Use only testo 0515 0100 resp. 0515 0107
rechargeable batteries!
5	Close the rechargeable battery compartment:
Press the orange key and push against the direction of the arrow until the rechargeable battery
engages.
6	Replace and close service cover (clip must clickin), fix with screws.
Firmware version V1.20.3568 or higher is required to operate the device with the0515 0107 replacement battery.
If necessary, please perform an update according to the firmware update instructions
on the product page on the Internet www.testo.com.

16

E.1.2

Charging batteries

The rechargeable battery can only be charged at an ambient temperature of ±0...+35 °C.
If the rechargeable battery has discharged completely, the charging time at room temperature is approx. 5-6 hrs.
Charging in the measuring instrument
The measuring instrument must be switched off.
1 Connect the plug of the mains unit to the mains unit socket on the measuring instrument.
2 Connect the mains plug of the mains unit to a mains socket.
- The charging process will start. The charge status will be shown on the display.
The charging process will stop automatically when the rechargeable battery is fully
charged.
Charging in the charger (0554 1103)
Refer to the documentation that comes with the charger.
Battery care
If possible, always discharge the rechargeable battery and recharge it fully.
Do not store the battery for long periods when discharged. (The best storage conditions are at 50 - 80 % charge level and 10 - 20 °C ambient temperature; charge fully
before further use).

E.1.3

Operation with the mains unit

1 Connect the plug of the mains unit to the mains unit socket on the measuring instrument.
2 Connect the mains plug of the mains unit to a mains socket.
- The measuring instrument is powered via the mains unit.
- If the measuring instrument is switched off and a rechargeable battery is inserted, thecharging process will start automatically. Switching the measuring instrument on has
the effect of stopping rechargeable battery charging and the measuring instrument isthen power­ed via the mains unit.

17

E.2

Probes/sensors

E.2.1

Connecting probes/sensors

Sensor socket:
Sensor detection is carried out at the sensor socket during the activation process:
Always connect the sensors you need to the measuring instrument before switching
it on or switch the device on and then off again after a change of sensor so that thecorrect sensor data are read into the measuring instrument.
Flue gas socket:
Probe/sensor detection at the flue gas socket is carried out continuously. It is possible
to change the probe/sensor even while the measuring instrument is switched on.
Connecting flue gas probes	Plug the connector onto the flue gas socket andlock by turning it clockwise gently (bayonet lock).
T here must be no more than two extension leads(0554 1202) between the measuring instrument
and the flue gas probe.

Connecting other sensors
	Insert the connector of the sensor into the sensor
socket.

Connecting the pressure tube
	Connect the pressure tube/tubes to the connecting nipple/nipples of the pressure socket(s).

18

E.2.2

Replacing the probe module1	Press the key on the top of the probe handle andremove the probe module.
2 Fit a new probe module and engage it in place.

E.3

Regular care

E.3.1

Condensate trap

The fill level of the condensate trap can be read from the markings on the trap. A warning message is displayed if the level in the condensate trap reaches 90 % ( , red flashing light).
Emptying the condensate trap
The condensate consists of a weak mix of acids. Avoid contact with the skin. Make
sure that the condensate does not run over the housing.
Condensate entering the gas path.
Damage to the sensors and flue gas pump!
Do not empty the condensate trap while the flue gas pump is in operation.
1	Hold the measuring instrument so that the condensate outlet points up.
2	Open the condensate outlet of the condensate
trap: Push out plug maximum to the stop).
3	Let the condensate run out into a sink .
4	Mop up any remaining drops on the condensate
outlet using a cloth.
5 Close the condensate outlet.
T he condensate outlet must be completely closed(marking), otherwise measuring errors could occur
if external air gets in.

19

E.3.2

Checking/replacing the particle filter

Checking the particle filter:	Check the particle filter of the modular flue gas
probe for contamination at regular intervals: Checkvisually by looking through the window of the filter
chamber.
Replace the filter if there are signs of contamination
Replacing the particle filter:
The filter chamber may contain condensate
1	Open the filter chamber by turning it gently anticlockwise.
2	Remove the filter plate and replace it with a newone (0554 3385).
3	Fit the filter chamber again and close it by turning it
gently clockwise.

E.4

Basic operating steps

E.4.1

Switching the measuring instrument on.
- The start screen is displayed (for about 5 s).
- Display light is switched on for 10 s.
Option:To go directly to a measurement while the start screen is being displayed, press
the function key for the desired measurement. See also Start keys edit, p. 29.
- The Measurements menu is opened.
-or- If the power supply was interrupted for a longer period: the Date / Time menu is opened.
-or- There is a device error: The Error diagnosis is displayed.

20

E.4.2

Calling up the function

Functions which cannot be selected because the required sensor/probe is notconnected are shown in grey type.
1 Select function:,.

- The selected function is shown with a grey background.
2 Confirm selection:

OK.

- The selected function is opened.

E.4.3

Entering values

Some functions require values (numbers, units, characters) to be entered. Dependingon the function that is selected, the values are entered via either a list field or an input
editor.
List field
1	Select the value to be changed (number, unit):,.
2	Adjust the value:,.

3	Repeat steps 1 and 2 as required.
4	Confirm the input:

OK.

5	Save the input: OK Save inputÝ

OK.

Input editor
1 Select value (character):2	Accept the value:

OK

,

,

,

.

.

Options:	Switch between uppercase/lowercase letters:
A <=> a (not always available).
Delete character: <=.
To position the cursor in the text: Select the text
input field: ,and position the cursor:,.
To delete character in front of the cursor:
Del .
3 Repeat steps 1 and 2 as required.
4 Save the input: OK Save inputÝ

OK

.

21

E.4.4

Printing data

Data are printed out via the function key Print . The function is only available if a printout is possible.
If data are to be transferred to a protocol printer via the infrared or Bluetooth interface,
the printer that is to be used must be activated, see Printer, p. 28.

E.4.5

Saving data

Data are saved either via the function key
functions are only available if saving ispossible.

Saveor the function field OK Save input. The

See also Memory, p. 22.

E.4.6

Confirming an error message

If an error occurs, an error message is shown in the display.
To confirm an error message:

OK.

Errors which have occurred and have not yet been rectified are shown by a warning
symbol in the header ( ).
Messages for errors which have not yet been rectified can be viewed in the Error diagnosis menu, see Instrument diagnosis, p. 26.

E.4.7

Switching the measuring instrument off

Unsaved readings are lost when the measuring instrument is switched off.
.
- Possibly: The pump starts and the senors are rinsed until the shutoff thresholds(O2 > 20 %, other parameters < 50ppm) are reached. Rinsing lasts no more than 2
minutes.
- The measuring instrument switches off.

22

E.5

MemoryAll readings are allocated to the location that is activated at the time and can be savedin the Flue gas menus. Unsaved readings are lost when the measuring instrument isswitched off.
Folders and locations can be created (max. 100 folders, max. 10 locations per folder),edited and activated and measurement protocols can be printed.
The special function Extras memory can be used to display the remaining free memory
space. All protocols can be printed or deleted. The entire memory (folders and locations
incl. protocols) can also be cleared.
Calling up the function:
Ý Memory Ý

E.5.1

OK

.

Folders

Creating a new folder:
Folders are given a unique identification via the folder number. A folder number can only
be allocated once. The folder number cannot be changed afterwards.
1 New Folder ÝOK.

2 Select Folder Number Ý change .
3 Enter values Ý OK Save inputÝ

OK.

4 Repeat steps 2 and 3 for the other criteria as required.
5

OK

.

Ordering the folders list:
1 Folders list.
2 Select the order criterion: Folder , Name , Addr’ .
Restoring the folders list:
Order the list in the sequence in which the folders were created:
Restore list Ý OK .
Editing folders:
Select the folder.
Options:
Delete the folder:
Edit the folder:

Del
Edit

.
.

23

E.5.2

Location

Creating a new location:
A location is always created in a folder.
1 Select the folder ÝOKÝ New location Ý

2 Select the Location name ÝOK.

Change .

3 Enter values Ý OK Save inputÝ

OK.

4 Repeat steps 2 and 3 for the other criteria accordingly.
5 OK Go to measurement or OK To location ÝOK.

Ordering the locations list:
1 Select the folder Ý
2 Locations list Ý

OK

OK

.

.

Activating a location:
Select the folder ÝOKÝ Select location Ý

OK.

- The location is activated and the Measurements menu is opened.
Restoring the locations list:
To arrange the list in the order in which the folders were created:
Select the folder Ý OK Ý Restore list Ý OK .
Delete a location:
1 Select the folder ÝOK

2 Select the location Ý.
Edit

3 Select Delete site with data Ý

.
OK

.

Performing location settings:
For flow speed, air flow and mass flow to be measured correctly, the shape and surface
area of the cross-section must be set.
The parameters Pitot factor and Offset factor influence the measurement of flow speed, airflow and mass flow. The Pitot factor is dependent on the Pitot tube used:· Straight Pitot tubes (0635 2041, 0635 2042): Pitot factor 0.67
· Prandtl (curved) Pitot tubes (0635 2145, 0635 2345): Pitot factor 1.00
The correction factor refers to the stated areas. If part of the area is covered (e.g. by grillebars), this can be compensated via the correction factor. The free portion of the area
should be given (e.g.. 20 % covered and 80 % free: correction factor 0.8). The correction
factor should be set at 1.00 for all standard applications.

24
The parameters Temp./amb. (ambient air temperature), Hum/amb. (ambient air humidity)
and Dew p./amb. (ambient air dew point) influence calculation of the qA (Flue gas loss)
and DP (Flue gas dew point temperature). The parameters should be set to the factory
settings for all standard applications (Temp./amb.: 20.0 °C, Hum/amb.: 80.0 %, Dew
p./amb.: 16.4 °C). To achieve greater accuracy, the values can be adjusted to the actual ambient conditions.
If the ambient air temperature sensor is plugged in, the value for Temp./amb. is accepted automatically. The parameter Dew p./amb. can be calculated from the values of Temp./
amb. and Hum/amb. via the function key calc .
1 Select the folder Ý

OK

.
Edit

2 Select the location Ý.

Options:
To set the shape of the cross-section:
Cross section Ý Change Ý Select the cross-section Ý.

4	To set the surface area of the cross-section:
Cross section Ý Change Ý Select the cross-section Ý Change Ý Set the values
Ý

OK

.

To set parameters:
Select the parameter Ý Change Ý Set the values Ý
3 OK To location Ý

E.5.3

OK

OK

.

.

Protocols

Printing/deleting all protocols :Select the folder ÝOKÝ Select a location Ý

Data

.

- The saved protocols are displayed. Protocols of measurement programs are marked
with a vertical line and the number of individual measurements (e.g. |245), for morethan 999 measurements dots are used (|...). If automatic furnace data are stored witha measurement protocol the following symbol is displayed next to the protocol name:. The data are printed with the protocol printout.
Options:
To print all data: Print all ÝOK

To delete all data: Delete all Ý

.
OK

.

25
Displaying/printing/deleting an individual protocol:
1 Select the folder ÝOKÝ Select a location Ý

Data

.

- The saved protocols are displayed. Protocols of measurement programs are marked
with a vertical line and the number of individual measurements (e.g. |245), for morethan 999 measurements dots are used (|...). If automatic furnace data are stored witha measurement protocol the following symbol is displayed next to the protocol name:. The data are printed with the protocol printout.
2 Select the protocol Ý Value .
Options:
To print the data:

Print

To delete the data:

E.5.4

Del

.
.

Extras Memory

Calling up the function:
Ý Memory Ý

Extra

.

- The remaining free memory space is displayed.
Options:
Print all data Ý OK .
Delete all data Ý OK .
Delete memory Ý OK .

26

E.6

Instrument diagnosis

Important operating values and instrument data are displayed. A gas path check can
be carried out. The status of the sensors and any device errors not yet rectified can bedisplayed.
Calling up the function:
Ý Inst’ diagnosis.
-or.
Performing a gas path check:OK

1 Gas path check Ý.

2 Place the black sealing cap on the tip of the flue gas probe.
- The pump flow is displayed. If the flow rate ≤0.02 l/min, the gas paths are not leaking.
3 End the check:OK.

Viewing device errors:
Error diagnosisÝ OK .

- Unrectified errors are displayed.
View next/previous error:,.

Viewing the sensor diagnosis:
1 Sensor check ÝOK.

- Possibly: Gas zeroing (30 s).
2 Select the sensor:,.

- The status of the sensor is displayed.

27

F. Configuration
This chapter describes the possible steps for adapting the product to the particularmeasurement task or the requirements of the user.
Familiarity with the contents of the chapter Operation (see p. 15) is assumed.

F.1

Instrument settings

F.1.1

Display edit

The parameters/units and the display representation (number of readings displayed per
display page) can be set.
Available parameters and units (may vary from one instrument to another):
Display
FT
CO2
O2
CO

Parameter
Flue gas temperature
Carbon dioxide
OxygenCarbon monoxideuCONO

Carbon monoxide undiluted ppm
Nitrogen monoxideppm, %, g / GJ,
mg/m3,mg/kW
Nitrogen oxideppm, %, g / GJ,
mg/m3,mg/kW
Ambient temperature°C, °F
Flue draught
mbar, hPa,
mmWS, inW,
Pa, psi, inHG
Sulfur dioxideppm, %, g / GJ,
mg/m3,mg/kW
Nitrogen dioxideppm, %, g / GJ,
mg/m3,mg/kW
Instrument temperature°C, °F
Flue gas dew point temp. °C, °F
Effency referred to net calo- %rific value
Effency referred to gross%calorific value
Poison index
Air ratio%
O2 Reference
%

NOx
AT
Drght
SO2
NO2
Itemp
DP
Effn
Effg
ratio
ExAir
O2 refUnits°C, °F%%ppm, %, g / GJ,
mg/m3,mg/kW

DisplayAir
ΔP2Parameter
Air ratio
Differential pressure(200hPa)

Gasfl
GasP
OilFl
Oil p
OilP
Pabs

m3/h, l / min
kW
kg/h
bar
kW
hPa , mbar, Pa,
mmWS, inW, psi,
inHG
Pump output
l / minDifferential pressure (40hPa) mbar, hPa, Pa,
mmWS, inW, psi,
inHG
Flow speedm/s, fpm
Airflowm3/s, m3/m, m3/h,
m3/d, m3/y, f3/s,
f3/m, f3/h, f3/d,
f3/y, l/min
Mass flow
kg/h, kg/d, t/d, t/y,
lb/h

Pump
ΔP1
Speed
Flow

MCO,
MNOx,
MSO2
H2

Units
%
mbar, hPa, Pa,
mmWS, inW, psi,
inHG

Gas flow rate
Gas burner output
Oil flow rate
Oil pressure
Oil burner output
Absolute pressure

Hydrogenppm

28
Calling up the function:
OKÝ Inst’ settings ÝOKÝ Display edit Ý.

Setting the display representation:
Select 4 values on disp large or 8 values on disp small Ý

OK.

Changing parameters and units:
1 Select the display position.
Options:Space

To insert a space:

To delete a parameter:
2

Change.
DelÝ Select parameter Ý.

OKÝ Select unitÝ

OK.

Saving settings:
OK Save inputÝ OK .

F.1.2

Printer

The headers (lines 1-3) and the footer for the printout can be set. To be able to transmit
data via infrared or Bluetooth interface to a report printer, the printer to be used musthave been activated.
The following printers can be used with the testo 340:
- Infrared high-speed printer (article no. 0554 0549)- Bluetooth®-/IRDA-printer (article no. 0554 0620)
Calling up the function:
Ý Inst’ settings ÝOKÝ Printer ÝOK.

Setting the print text:
1 Print text ÝOK.

2 Select Line 1, Line 2, Line 3 or Footnote Ý Change .
3 Enter the values Ý OK Save inputÝ

OK.

4 Repeat steps 2 and 3 for the other lines in the same way.
5 OK Save inputÝ

OK.

Printer selection:
The printer 0554 0620 can only be selected after activating bluetooth, see Communication, p. 30.
Select Printer Ý OK Ý Select Printer Ý OK .

29

F.1.3

Start keys edit

The assignment of the function keys depends on the function that is selected. Only thefunction keys in the start screen (shown when the measuring instrument is switched on)
can be assigned any function from the Measurements menu.
The function keys are only active if the required sensors are connected.
Calling up the function:
Ý Inst’ settings ÝOKÝ Start keys edit Ý

OK.

Assigning functions to the start keys:
1 Select function Ý Press the function key that is to be assigned the selected function.
2 Repeat step 1 for the other function keys as required.
Saving settings:
OK Save inputÝ OK .

F.1.4

Auto OffWith the AutoOff function active, the instrument switches itself off automatically if no key
is pressed after the set period of time.
Calling up the function:
Ý Inst’ settings ÝOKÝ AutoOff Ý

OK.

Switching AutoOff on and off:
Select Auto Off Ý Change Ý select On or Off Ý

OK

Setting the AutoOff time:
Select Time Ý Change Ý Set the value Ý

OK

.

.

30

F.1.5

Communication

Select interface IR/IrDA/ interface Bluetooth.
Calling up the function:
OKÝ Inst’ settings ÝÝ Communication ÝOK

Set interface IR/IrDA / interfaceBluetooth:OK

Select IrDA oder Bluetooth Ý

F.1.6

Date / Time

The date and the time can be set.
Calling up the function:
OKÝ Inst’ settings ÝOKÝ Date / Time Ý

Setting the date/time:
Select Time or Date Ý Change Ý Set the values ÝOK

Saving settings:
OK Save inputÝ OK .

F.1.7

Language

The menu language can be set.
Calling up the function:
Ý Geräteeinst.Ý

OKÝ Sprache Ý

OKÝ Inst’ settings ÝOKÝ Language Ý

.

-orOK

.

Setting the language:
Select Deutsch or Englisch ÝOK.

-orSelect German or English Ý

F.1.8

OK

.

Dilution settings

The dilution of the measurement gas can be set.
Call up function:
Ý Inst’ settings ÝOKÝ Dilution settings Ý

OK

.

.

31
Setting automatic dilution
Automatic dilution is enabled to protect the sensors against overload if threshold values
are exceeded. Threshold values can be set for the available sensors. See F.2 Sensor
settings. After switching on, „Automatic dilution“ is always preset.
Functionality with automatic dilution
Automatic measuring
range extension

Slot 3 or slot 4

Slot 2

testo 340 without option for dilution of all sensors (only instrumentswith firmware prior to version 1.14)

If a threshold value of a sensor in
slot 3 or slot 4 is exceeded, thesystem is shut down.

testo 340 with option for dilutionof all sensors (all instruments from
FW 1.14) *)If a threshold value of a sensor in
slot 3 or 4 is exceeded, the gas toall sensors, i.e. slot 1-4, is diluted
by a factor of x2. (Dilution acrossall sensors)

If the reading of the sensor in slot 2
exceeds the threshold value set forit, the gas to sensor 2 is diluted bya factor of x5. (Single slot dilution).

*) With firmware version 1.14, all testo 340 instruments can use dilution for all sensors (slot 1 - 4, factor x2) inaddition to single slot dilution (slot 2, factor x5)..

If a threshold value is exceeded despite dilution, the gas pump switches off..
	
Select Automatic Ý OK .
If Manual 2x, 5x or Dilution Off is selected, the dilution value is fixed, there is no switching between the dilution factors.
Behaviour with fixed dilutions
Manual measuring range Slot 3 or slot 4
extension

Slot 2

Manual 5x(Permanent single slot dilution)

The gas to sensors 1, 3 and 4
remains undiluted.

The gas to sensor 2 is permanently diluted by a factor of 5x.

Manual 2x(Permanent dilution across all
sensors)

The gas to sensors 1, 2, 3 and 4 is permanently diluted by a factor of
2x.

Dilution Off(Permanent switch-off of dilution)

The gas to sensors 1, 2, 3 and 4 remains permanently undiluted.

If a sensor threshold value is exceeded, the gas pump is switched off.
Setting permanent dilution across all sensors
Select Manual 2x All Ý OK .
Setting permanent single slot dilution
Select Manual 5x (Slot 2) Ý OK .

32
Switching dilution off
Select Select Dilution Off Ý OK .
Viewing measuring range information
The measuring range information depends on the available sensors.
Select Measuring ranges Ý OK .
When dilution is enabled, the measurement value resolution and measuring accuracies change, see technical data.
The set dilution factor is shown on the analyzer display.
Diluted values are represented inversely.
Schematic presentation of gas path testo 340:

Slot 1
O2
		
		
		
		

Slot 2

Slot 3

Slot 4CO, H2 - comp.
NOCO, H2 - comp.
COlow, H2 - comp.
NOlow
COlow, H2 - comp.
NO
NO2
SO2
NOlow		 NO2
SO2

33

F.2

Sensor settings

It is possible to set an NO2 addition and thresholds for activating sensor protection(dilution/disconnect). The actual calibration data and the status of the sensors can bedisplayed. Recalibration can be carried out.
Calling up the function:
Ý Sensor settings ÝOK.

Setting the NO2 addition (as long as no NO2 sensor is plugged in):
1 NO2 addition.
Option:Reset N02 addition to default value:
2

ChangeÝ Set the value Ý

OK

Deflt

.

.

Setting sensor protection:
To extend the measuring range and protect the sensors against overloads, you can set
thresholds which, when exceeded, activate sensor protection. Thresholds for a varietyof parameters can be set, depending on the sensors that are connected.
1 Sensor protection ÝOK.

2 Select the parameter.
Option:Reset selected parameter to default value:
3

ChangeÝ Set the values Ý

OK

Deflt

.

.

4 Repeat steps 2 and 3 for the other parameters accordingly.
Saving settings: OK Save inputÝ

OK.

Measurement CO (H2 - compensated) sensor:
In order to protect the sensor and for a longer sensor life, we recommend that inmeasurements with unexpectedly high CO concentrations (more than 1,000 ppm),
the CO sensor is installed in slot 2, and that the threshold of the CO sensor protection is set to 1,000 ppm. From a CO concnetration of 1,000 ppm, dilution with a factorof 5 is automatically activated.
This setting can also be made if H2 concentrations of more than 1,000 ppm are to be
expected.

34
Display ppm/hour counter (active only when sensors with exchangeable filters areused):For those sensors which have an exchangeable chemical filter for neutralizing cross-gases, a
ppm/hour counter is available.
This applies to:
CO, H2 comp. sensor (filter life approx. 170000 ppmh)
NO sensor (filter life approx. 120000 ppmh)
1 ppm/hour counter Ý OK .
2 Select sensors.
Options:
Switch between the individual sensors:,.

Display of max. filter life and current hour counter value
When maximum filter life is reached, information is displayed: Filter material spent.
Please exchange filter.
Reset hour counter of a sensor:

back

.

Displaying actual calibration data/sensor status:
Calibrationdata Ý OK .

Options:
To change between the actual calibration data of the individual sensors:
To print out the actual calibration data of all sensors:

Print

,

.

.

To display the status of the sensor as a graphic: Graphic .
- The status of the sensor is checked on every recalibration. Any deviation fromthe condition on delivery is indicated as a percentage.
70 %-threshhold: “Gas cell reading unstable, replace item recommended.“, 50 %‑threshhold: “Replacement sensor.“
The last 25 recalibrations are shown.
To return to the display of the actual calibration data:

Value

.

Recalibration:
CO, H2 - comp, SO2, NO2, NO sensors and the O2 reference value can be recalibrated.
Measurement gas dilution in slot 2 can be recalibrated.
If obviously unrealistic readings are displayed, the sensors should be checked and recalibrated as required.

35

Dangerous gases
Danger of poisoning!
Observe safety regulations/accident prevention regulations when handlingtest gases.
Use test gases in well ventilated rooms only.
Recalibration with low gas concentrations can lead to deviations in accuracy in theupper measuring ranges.
Sensor protection is deactivated during recalibration. For this reason, test gas concentration should be lower than the maximum value of the sensors.
Recalibrating the sensor at slot 2 has an effect on the dilution:Always carry out arecalibration of measurement parameters before a recalibration of dilution.
The following conditions must be met when recalibrating:· Use absorption-free tube material· Switch the measuring instrument on at least 20 min before recalibration (warming-up)· Use clean air for gas zeroing· Charge the test gas via calibration adapter (0554 1205, recommended) or the tip of
the probe· Maximum overpressure of the test gas: 30 hPa (recommended: unpressurised via
bypass)· Charge the test gas for at least 3 min
Recommended test gas concentrations and compositions are given in testo‘s field guideto test gases.
1 Recalibration ÝOK.

- Possibly:Gas zeroing (30 s).
2 Select the parameter Ý Change Ý Enter the test gas concentration (nominal value).
3 Charge the analyzer with test gas.
4 Start calibration:

Start

.

If the parameter of the sensor inserted in slot 2 has been selected:- You will receive a query as to whether dilution should be initialised.
Start recalibration of parameter: No Ý
Start recalibration of dilution: Yes

Ý

Start

Start

.

.

5 Accept the nominal value as soon as the actual value is stable:

OK

.

36

F.3

Fuels

The fuel can be selected. The fuel-specific coefficients can be set. Ten fuels can be set
for each customer.
Calling up the function:
Ý Fuels Ý

OK.

Activating fuel:Select the fuel ÝOK.

Setting coefficients:
1

Coeff.

.

Option:To reset all coefficients to default values: Default values ÝOK.

To change the name of the fuel (only possible with customer-specific fuel): Name
Ý Change Ý Set the values Ý OK .
2 Select the coefficient
Option:To reset the chosen coefficients to default values:
3

ChangeÝ Set the values Ý

OK

Deflt

.

.

4 OK Save inputÝ OK .
The calculation of the fuel factors is carried out via the testo easyEmission software.

37

G. Measuring
This chapter describes the measuring tasks that can be carried out with the product.
Familiarity with the contents of the chapter Operation (see p. 15) is assumed.

G.1

Preparing measurements

G.1.1

Zeroing phases

Measuring the combustion air temperature (AT)
If no combustion air temperature probe is connected, the temperature measured by
the thermocouple of the flue gas probe or the connected external thermocouple at theprobe socket during the zeroing phase is used as the combustion air temperature. All
dependent parameters are calculated using this value.
This method of measuring combustion air temperature is sufficient for systems dependent on ambient air. However, ensure that the flue gas probe is near the intake duct of
the burner during the zeroing phase! Following the zeroing phase, the currently measured temperature is displayed as the flue gas temperature (FT).
If a combustion air temperature probe is connected, the combustion air temperatureis measured continuously via this probe.
Gas zeroing
The first time a gas measuring function is called up after the instrument has been switched on, the sensors are zeroed.
The flue gas probe may already be in the flue gas duct during zeroing if a separate
AT sensor is connected.
Draught/pressure zeroing
The pressure sensors are zeroed when a pressure measuring function is called up.
The pressure sockets of the instrument must be free (i.e. unpressurized, not closed)
during zeroing.

38

G.1.2

Using the modular flue gas probe

Checking the thermocouple
The thermocouple of the flue gas probe must notlie against the probe cage.
	Check before use. Bend the thermocouple back if necessary.
Aligning the flue gas probe
The flue gas must be able to flow freely past thethermo­couple.
	Align the probe by turning it as required.
The tip of the probe must be in the centre of the fluegas flow.
	Align the flue gas probe in the flue gas duct so thatthe tip is in the centre of the flow (area of thehighest flue gas temperature).

G.1.3

Configuring the reading display

Only those parameters and units which are activated in the reading display appear in thereading display, the saved measurement protocols and the protocol printouts.
Before beginning measurements, configure the reading display so that the required
parameters and units are activated, see Display edit, p. 27.

G.1.4

Set location/fuelBefore carrying out measurements, the measurement location and the fuel must be correctly selected see Memory, p. 22 and Fuels, p. 35.

39

G.2 Measurements
Before starting the measurement, remove and set aside the fitted sealing cap on theprobe tip of the flue gas sampling probe. The sealing cap is required for the gas path
check (see section E6).

G.2.1

Flue gas, Flue gas + m/s, Flue gas + Δp2

The flue gas menus are the central measurement menus in which - in addition to thereadings measured with this function - the readings of all measurements carried out are
displayed (if this is selected in the Display edit menu). All readings can also be saved in or
printed out from these menus.
The flue gas menus are always available, regardless of which sensors are connected.
Measuring functions of the three flue gas menus:· The Flue gas function enables flue gas to be measured.
· The Flue gas + m/s function enables flue gas to be measured in addition to flow speed(+ air/mass flow calculation) by means of a Pitot tube (the connection cable for thestraight Pitot tube (thermocouple should not be connected to the flue gas socket).·· The Flue gas + Δp2 function enables flue gas to be measured in addition to differential
pressure measurement.
After measurements with high concentrations and longer measurements, the instrument should be rinsed with fresh air in order to enable the sensors to regenerate, see
Chapter Recommended rinsing times, p. 57.
For flow speed measurement. Before beginning measurement, configure the location
settings (Pitot tube factor and correction factor), see chapter Location, p. 23.
Do not measure for longer than 5 min, as the drift of the pressure sensor means thatthe readings could be outside the tolerance limits.
Calling up the function:
Ý Measurements ÝOKÝ Flue gas ÝOKÝ Measurements ÝOKÝ Flue gas + m/s ÝOK.

Ý Measurements ÝOKÝ Flue gas + Δp2 Ý

OK

.

.

-or-or- Possibly: gas zeroing (32 s).
For the functions Flue gas + m/s and Flue gas + Δp2:
Depressurise the pressure sensor and carry out pressure zeroing with
If no fuel has yet been selected:
Select the fuel Ý

OK

.

V=0

.

40
Measuring:
1 Start measuring:

Start

.

- The readings are displayed.
Option:Interrupt measurement and rinse sensors:
Continue measurement: Gas .
2 Stop measuring:

Stop

Air

,

.

Options:
To print readings:

Print

To save readings:

Save

.
.

- The readings from the flue gas measurement, as well as any readings taken over
into the menu Flue Gas from other measurement functions are stored and/or printed in a measurement protocol (automatic furnace data are not printed).

G.2.2

ProgramFive flue gas measuring programs can be set, saved and run.
Calling up the function:
Ý Measurements ÝOKÝ Program Ý

OK

.

OK

.

Changing a measuring program:
1 Select the program Ý Change .
2 Meas rate Ý Change Ý Enter the values Ý

3 Repeat step 2 for the other criteria accordingly.
4 OK Save inputÝ

OK.

Running a measuring program:
1 Select the program Ý

Start

.

2 Select Start without zeroing (only available if gas zeroing has already been carried out)or Start with zeroing and start the program with OK .
- If selected: Gas zeroing (32 s).
- Stabilisation phase (60 s).
- The program will run and then stop after the programmed time.
Option:To print readings:

Print

To cancel the program:.
Stop, start again:

Start

.

41

G.2.3

Draught

The Draught function is only available when a flue gas probe is connected.
Do not measure for longer than 5 min, as the drift of the pressure sensor means thatthe readings could be outside the tolerance limits.
Calling up the function:
Ý Measurements ÝOKÝ Draught ÝOK.

Measuring:
1 Start measuring:

Start

.

- Draught zeroing (5 s).
2 Position the flue gas probe in the centre of the flow (area of the highest flue gas
temperature). The display showing the maximum measured flue gas temperature (FT)
helps when positioning the probe.
- The reading is displayed.
3 Stop measuring

Stop

.

- The reading is recorded.
Option:To print the reading:

Print

.

4 To copy the reading to the Flue gas menu:

OK.

- The Measurements menu is opened.

G.2.4

Smoke# /HCT

Calling up the function:
Ý Measurements ÝOKÝ Smoke#/HCT Ý

OK.

Recording smoke tester no. / smoke numbers / oil derivative with the smoke pumpand manual input:
The function is only available if the chosen fuel is an oil.
1 Sm. tester no. Ý Change Ý Enter the tester number Ý
2 Smoke # 1 Ý Change Ý Enter the value Ý

OK

OK

.

.

3 Repeat step 2 for the other smoke # and the oil derivative accordingly.

42
Recording smoke tester no. / smoke numbers / oil derivative with the smoke tester
testo 308 and wireless transfer:- t308 must be in Data Mode (t308

1 Press function key).

.

- The values recorded by the smoke tester are transferred.
2 Once all values have been transferred, select function key

OK.

Entering the heat carrier temperature:
Heat carrier Ý Change Ý Enter the value Ý OK .

Copying values to the Flue gas menu:
The values are not shown on the instrument‘s display. In the menu Flue Gas, they canbe stored and/or printed in a measurement protocol together with the readings froma flue gas measurement, or transferred to a PC
OK Copy readings Ý OK .

- The Measurements menu is opened.

G.2.5

Gas flow rate

The Gas flow rate function is only available if the activated fuel is a gas.
Calling up the function:
Ý Measurements ÝOKÝ Gas flow rate ÝOK.

Measuring:
1 Enter the measurement period: Sample time Ý Change Ý Enter the value (18, 36, or
180 seconds) Ý OK .
2 Start measuring:Start. Note the counter status of the gas counter.

- The remaining measurement period is displayed.
- When the measurement period has lapsed, a long beep is emitted. The last 5 s areindicated by a short beep.
3 Enter the flow rate: Gasflow Ý Enter the value Ý

OK.

- The calculated gas burner output is displayed.
4 Copy the values to the Flue gas menu: OK Copy readings Ý- The Measurements menu is opened.

OK

.

43

G.2.6

Oil flow rate

The Oil flow rate function is only available if the activated fuel is an oil.
Calling up the function:OKÝ Measurements ÝÝ Oil flow rate ÝOK.

Measuring:
1 Enter the flow rate: Flowrate Ý Change Ý Enter the value Ý
2 Enter the oil pressure: Oil pressure Ý

ChangeOK.

Ý Enter the value Ý

OK.

- The calculated oil burner output is displayed.
3 Copy the values to the Flue gas menu: OK Copy readings ÝOK.

- The Measurements menu is opened.

G.2.7

m/s

A Pitot tube must be connected, the connection cable for the Pitot tube thermo­
couple must be connected to the sensor input.
To measure flow speed, air flow and mass flow the parameters of cross-section shape,cross-section surface area, Pitot factor and offset factor must be set, see Location, p. 23.
Do not measure for longer than 5 min, as the drift of the pressure sensor means thatthe readings could be outside the tolerance limits.
Calling up the function:OKÝ Measurements ÝÝ m/s ÝOK.

Measuring:
1 Start measuring:

Start

.

- Pressure zeroing (5 s).
2 Position the Pitot tube in the duct. The display showing the measured flow speed(Speed) helps when positioning the probe.
- The reading is displayed.
3 Stop measuring:

Stop

.

- The reading is recorded.
Option:To print the reading:4 Accept the reading:

OK

Print

.

.

- The Measurements menu is opened.

44

G.2.8

Δp2

Do not measure for longer than 5 min, as the drift of the pressure sensor means thatthe readings could be outside the tolerance limits.
When measuring the gas flow pressure of gas heaters:
Dangerous mixture of gases
Danger of explosion!
Make sure there are no leaks between the sampling point and themeasuring instrument.
Do not smoke or use naked flames during measurement.
Calling up a function:

Ý Δp2 ÝOK

Ý Measurements Ý
Measuring:
1 Start measuring:

Start

.

- Pressure zeroing (5 s).
2 Position the Pitot tube in the duct.
3 Stop measuring

Stop

.

- The reading is recorded.
Option:To print the reading:4 Accept the reading:

OK

Print

.

.

- The Measurements menu is opened.

OK

.

45

H. Transferring data
H.1

Protocol printerIf data are to be transferred to a testo protocol printer via the infrared or Bluetooth interface, the printer that is to be used must be activated, see Printer, p. 28.
Data are printed out via the function key
tout is possible.

Print. The function is only available if a prin-

46

I.

Care and maintenanceThis chapter describes the steps and action required in order to keep the product functioning properly.
See also Regular care, p. 18.

I.1

Cleaning the measuring instrument

If the housing of the instrument is dirty, clean it with a damp cloth.
Use distilled water, or alternatively mild solvents such as isopropanol to clean the fluegas analyzer. If using isopropanol, please refer to the instruction leaflet for the product.
Isopropanol fumes have a slight narcotic effect, and typically cause irritation of the eyesand sensitive mucous membranes. When using it, please ensure that there is adequate
ventilation.
Leaking solvents and degreasers!
Damage to the instrument and sensors!
The following substances can cause damage to the device or the sensors:- Solvent-containing vapours such as those contained in cleaning agents, degreasers,
wax polishes and adhesives- Formaldehyde
Do not store cleaning cloths, solvents and degreasers, such as isopropanol, in the case.
The use of strong or harsh alcohol or brake cleaner can result in damage to the
instrument.

I.2

Replacing sensors

Acid in the sensors. May cause chemical burns.
- Do not open the sensors.
- Always wear gloves when changing a sensor.
Eye contact: Rinse the affected eye thoroughly under running water for 10 minutes,
keeping the eyelids wide open and protecting the unaffected eye. Remove contact len
ses wherever possible.
A slot bridge (0192 1552) must be inserted in slots which do not have a sensor. Used sensors must be disposed of as special waste!
The latest device software must be installed on the measuring device, see chapter
Updating device software
The measuring instrument must be switched off and the mains unit disconnected from themains supply.

47
1 Place the measuring instrument on its front.
2 Loosen screws with a screwdriver, release clip in the direction of the arrow, and remove
service cover.
3 Pull tube connections from the faulty sensor/bridge.
4 Remove the faulty sensor/bridge from the slot.
 o not remove auxiliary circuit boards of the new sensors until immediately before insD
tallation. Do not leave the sensors without a auxiliary circuit boards for longer than 15
min.
	NO/NOlow sensors:
Remove the auxiliary circuit board.
5 Insert a new sensor/bridge in the slot.
6 Attach tube connections to the sensor/bridge.
7 Replace and close service cover (clip must click in), fix with screws.
8. Turn on a device.
After replacing an O2 sensor, wait 15 min before using the instrument again (Production of supply voltage and initial stabilization phase for new sensors).
If retrofitting a sensor you must activate the relevant measuring parameter and unit, see
Display edit, p. 27.

I.3

Filter for CO, H2 - comp., NO exchanging sensors

The measuring instrument must be switched off and the mains unit disconnected from themains supply.
1 Place measuring instrument on its face.
2 Loosen screws with a screwdriver, release clip in the direction of the arrow, and remove
service cover.
3 Remove hose connections from sensor.
4 Remove sensor from slot.
5 Remove spent filter from sensor.
6 Place new filter on sensor.
Avoid touching the electronics of the sensor.
Observe the markings on the filter and the sensor
7
Insert sensor into slot.
8	Replace hose connections on to sensor.
9	Replace and close service cover (clip must click in),fix with screws.
10	Reset ppm hour counter (see Display ppm/hour
counter, p. 33.

48

I.4 Recalibrating sensors
See Sensor settings, p. 31.

I.5

Cleaning the modular flue gas probe
Detach the flue gas probe from the measuring instrument before cleaning.
1 R elease the probe catch by pressing the key on theprobe handle and remove the probe module.
Probe shafts with preliminary filter:
Unscrew the preliminary filter.
2	Blow compressed air through the flue ducts of theprobe module and probe handle (see illustration).
Do not use a brush!
Probe shafts with preliminary filter:
Blow compressed air through the preliminary filter. For thorough cleaning, use an
ultrasonic bath or a cleaner for dentures. Screw the preliminary filter back on to
the probe shaft after cleaning.

3 Fit a new probe module on the handle and engage it in place.

I.6

Replacing probe preliminary filter

The preliminary filter in probe modules fitted with a preliminary filter can be replaced.
Unscrew the preliminary filter from the probe shaft and screw on a new filter.

I.7

Replacing thermocouple
1	Release the probe catch by pressing the key on
the probe handle and remove the probe module.
2	Detach the plug-in head of the thermocouple
from its mounting using a screwdriver and pull thethermo­couple from the probe shaft.
3	Lead a new thermocouple into the probe shaft until
the plug-in head engages.
4	Fit probe module on the handle and engage it inplace.

49

J.

Questions and answers

This chapter gives answers to frequently asked questions.
Question
Possible causes
Measuring instrument keeps AutoOff function is switched on.
switching itself off or instru- Battery spent.
ment will not switch on.
Measuring instrument will not Battery spent.
switch on.
Display of the battery capacity Batterywasoftennotfullydischarged / charged.
appears faulty
Failure report:
Pump flow rate to highMessage:
Gas cell shutdown-threshold has been exceeded
Failure report:
Printing not possible

Gas output closed.

RemedySwitch AutoOff function off(see AutoOff, p. 29).
Charge rech. battery or connect mains unit
(see Operation, p. 15).
Charge rech. battery or connect mains unit
(see Operation, p. 15).
Discharge rechargeable battery fully (until
instrument switches off by itself ) andthen charge fully.
Ensure that gas output is free

The shutdown threshold of a sensor has been
exceededRemove probe from flue.

· With printer 0554 0620 The wrong interface
is activated.
· The wrong printer is activated.
· Printer is switched off.
· Printer is out of wireless range.

Activate correct interface(see Communication, p. 30).
Activate correct printer (see Printer, p. 28).
Switch printer on.
Place printer within wireless range.

If we could not answer your question, please contact your dealer or testo Customer
Service. For contact data, see back of this document or web page www.testo.com/
service-contact

50

K. Technical data
K.1

Standards and tests· As declared in the certificate of conformity, this product complies with Directive
2014/30/EC.
· This product is TÜV approved to EN 50379 part 2, exception: SO2 and NO2 parameters
are not tested, recalibration is not blocked.

K.2

Measuring ranges and accuracies

Accuracy
Resolution t90 1±0.2Vol.%
0.01Vol.%< 20 s±10 ppm or
1 ppm< 40 s
±10 % of reading1 at 0...200 ppm±20 ppm or±5 % of reading 1 at 201...2000 ppm±10 % of reading at 2001...10000 ppm
COlow, H2 - comp. 0...500 ppm±2 ppm at 0.0...39.9 ppm
0.1 ppm< 40 s
±5 % of reading at 40.0...500 ppm
NO2
0...500 ppm±10 ppm at 0...199 ppm
0.1 ppm< 40 s
±5 % of reading in rest of range
SO2
0...5000 ppm±10 ppm at 0...99 ppm
1 ppm< 40 s
±10 % of reading in rest of range
NOlow
0...300 ppm±2 ppm at 0.0...39.9 ppm
0.1 ppm< 30 s
±5 % of reading at 40.0...300.0 ppm
NO
0...4000 ppm± 5 ppm at 0...99 ppm
1ppm< 30 s± 5 % of reading at 100...1999 ppm±10 % of reading at 2000...4000 ppm
Draught, Δp1-40...40 hPa+ 1.5 % v. Mw. at -40.00...-3.00 hPa
0.01 hPa+ 0.03 hPa at -2.99...2.99 hPa+ 1.5 % v. Mw. at 3.00...40.00 hPa
Δp2-200...200 hPa±1.5 % of reading at -200.0...-50.0 hPa 0.1 hPa± 0.5 hPa at -49.9...49.9 hPa±1.5 % of reading at 50.0...200.0 hPa
1 Response time 90 %, recommended minimum measurement duration to guarantee correct readings: 3 min
Parameter
O2CO, H2 - comp.

Measuring range
0...25Vol.%
0...10000 ppm

51

Parameter
Measuring range Accuracy
Resolution
t90 1
P abs
600...1150 hPa±10 hPa
1 hPa
Temperature-40...1200 °C± 0.5 °C at 0.0...99 °C
0.1 °C atdepends(NiCrNi)-40.0...999.9 °C 0.1 °C± 0.5 % of readingin rest of range
at 1000 °C...1200 °C
on probe
Efficiency
0...120 %0.1 %Flue gas loss
0...99.9 %0.1 %Flue gas dewpoint 0...99.9°C
0.1 %CO2 determination 0...CO2 max.
± 0.2 Vol %0.1 Vol %<40 s(CalculatedfromO2)
1 Response time 90 %, recommended minimum measurement duration to guarantee correct readings: 3 min

For activated single dilution slot 2 (factor 5)
Parameter
CO, H2 - comp.
COlow, H2 - comp.
SO2
NO
NOlow

Measuring range
700...50000 ppm
300...2500 ppm
500...25000 ppm
500...20000 ppm
150...1500 ppm

Accuracy+10 % of reading (additional error)+10 % of reading (additional error)+10 % of reading (additional error)+10 % of reading (additional error)+10 % of reading (additional error)

Resolution
1 ppm
0.1 ppm
1 ppm
1 ppm
0.1 ppm

With activated dilution of all sensors (factor 2)
Accuracy
Resolution
t90 1±1 Vol. % of reading additional error (0...4,99 V ol. %) 0.01 Vol. %< 20 s±0,5 Vol. % of reading additional error (5...25 Vol. %)CO, H2 - comp.
700...20000 ppm +10 % of reading (additional error)
1 ppm
COlow, H2 - comp. 300...1000 ppm+10 % of reading (additional error)
0.1 ppm
NO2
200...1000 ppm+10 % of reading (additional error)
0.1 ppm
SO2
500...10000 ppm +10 % of reading (additional error)
1 ppm
NOlow
150.. .600 ppm+10 % of reading (additional error)
0.1 ppm
NO
500...8000 ppm+10 % of reading (additional error)
1 ppm
1 Response time 90 %, recommended minimum measurement duration to guarantee correct readings: 3 min
Parameter
O2

Measuring range
0...25 Vol. %Filter lifetime
Parameter
CO, H2 - comp.
NO

Lifetime
170000 ppmh
120000 ppmh

52

K.3

Other instrument data

Characteristic
ValuesOperating temperature-5...50 °C
Storage/transport temperature -20...50 °C
Power supply
Battery block: 3.7 V / 2.4 Ah
Mains unit: 6.3 V / 2 A
Dimensions (L x W x H)
283 x 103 x 65 mm
Weight960 g
Memorymax. 100 folders, max. 10 locations per folder
Display
Monochrome, 4 grey levels, 160 x 240 pixels
Battery storage temperature: ±0...35 °C
Battery life
> 6 h (pump on, display light off, 20 °C ambient temperature)
Battery charge time
approx. 5-6 h
Pump perform.against x hPa Max. positive pressure at probe tip: + 50 mbar
Max. negative pressure at probe tip: -200 mbar
Initialization and zeroing time 30 sec.
Protection class
IP 40
EU guidelines
2014 / 30 EU, 2014/53/EU

K.4

EC declaration of conformity, approvals
and certification

Testo SE & Co. KGaA hereby declares that the testo 340 (0632 3340) comply with Directive
2014/53/EU.
The full text of the EU Declaration of Conformity can be found on the following website:
https://www.testo.com/eu-conformity.

53

K.5 Principles of calculation
K.5.1

Fuel parameters

Fuel
NaturalGas
Light Oil
Heavy Oil
Coal
Anthracit
Coke
Propane
Butan
Test gas
DieselPetrolCO2 max
11.90
15.50
15.80
18.40
19.10
20.60
13.80
4.10
0.00
15.60
15.10

K.5.2

Calculation formulae

Carbon dioxide:

O2 base3.00 %
3.00 %
3.00 %
7.00 %
7.00 %
7.00 %
3.00 %
3.00 %
0.00 %
3.00 %
3.00 %

Kgr
0.35 %
0.48 %
0.51 %
0.62 %
0.67 %
0.75 %
0.42 %
0.43 %
0.00 %
0.49 %
0.46 %

CO2 =

Knet
0.39
0.51
0.51
0.65
0.69
0.76
0.45
0.46
0.00
0.53
0.49

CO2max x (O2base - O2)
O2base

K1
40.00
53.00
54.00
63.00
65.00
70.00
48.00
48.00
0.00
53.00
51.00

H
24.4
13
11.5
4
3
0.4
18.2
17.2
0
12.9
14.2

MH2O
0
0
0.2
13
12
10
0
0
0
0
0

C02 max:
O2 base:
O2:

Qgr
53.42
45.6
42.9
26.75
29.65
27.9
50
49.3
0
44.62
45.1

Qnet
48.16
42.8
40.5
25.5
28.95
27.45
46.3
45.8
0
41.8
42.02

Fuel-specificcarbon dioxide value
O2 reference value
Measured oxygen
content as %Efficiency referred to Gross Efficiency:
Effg = 100 -((Kgr x (FT - AT)
CO2

)+ (

K1 x COCO2 + CO))(MH2O + 9 x H) x (2488 + 2.1 x FT - 4.2 x AT)
Qgr x 1000)+(

(MH2O + 9 x H) x (210 + 2.1 x FT - 4.2 x AT)
Qnet x 1000

) + ( Q x (CO + CO) ))Efficiency referred to Nett Efficiency:
Effn= 100 -((Knet x (FT - AT)
CO2

)+(

K1 x Qgr x COnet

2

		Kgr/Knet/Qgr/Qnet/K1/MH2O/H:
Fuel-specific factors
FT:
Flue gas temperature
AT:
Ambient temperatureCO:
Measured carbon monoxide
value in %CO2:
Calculated carbon dioxide
value in %

54

Poison index:

COratio = CO x 10000

CO:

2

CO2:

Excess Air (ExAir):

Nitrogen oxides:

Carbon monoxide
undiluted:

Flue gas dew point:=21%( 21% - O -1 ) x 100
2

Measured carbon monoxide
value in %Calculated carbon dioxide
value

21 %:

Oxygen level of air

O2:

Measured oxygen level in %No NO2 sensor connected:NO:
NOx = NO + (NO2 Add. x NO)		
NO2 sensor connected:
NO2 Add. :NOx = NO + NO2		

Measured nitrogenmonoxide value
Nitrogen dioxide
addition factor

uCO = CO x λ 	CO:

measured carbon
monoxide content
Calculated air ratioln
ΔP = ln((

FH20 x PAbs
610.78
FH20 x PAbs
610.78λ:) x 234.175) - 17.08085

FH 20:
PAbs:

Flow speed:v=

Air flow:

V =vxa575 x ΔP x (FT + 273.15)
xα
Pabs

Flue gas-specificwater vapour content asvol.%Absolute pressure in 		
mbar/hPa abs:
P
ΔP:
FT:
α:

Absolute pressure
Differential pressure
Flue gas temperature
Pitot tube factor

v :
a:

Flow speed
Cross-section area

55
Mass flow:
Mass flow CO:

MCO = CO [kg/h] [ppm] x FGas x 1.25 [kg/m3] x Z

Mass flow NOx:

MNOx = NOx [kg/h] [ppm] x FGas x 2.05 [kg/m3] x Z

Mass flow SO2:

MSO2 = SO2 [kg/h] [ppm] x FGas x 2.86 [kg/m3] x Z
T:Z:

Calculation term Z:

Fgas:Fuel-specifichumidity value
Dew point
Calculation term(see below)

273.15 x Pabs [mbar]
Z = 273.15 +T [°C] x 1013 x V [m3/s] x 10-6 [1/ppm] x 3600

Conversion from ppm to mg/scm:
The numerical factor used in the formula (e.g. 1.25 for CO) corresponds to the standard density of the respective gas in mg/m³. Please note:-	for SO2, standard density values in the range from 2.86 to 2.93 are stated in literature (difference between ideal and real gas behaviour for SO2)
-	for NOx the standard density of NO2 (2.05), is used, as only this compound is stable (NO combines very quickly after its creation with oxygen to form NO2)
Carbon monoxide:

CO [mg/scm] =O2base - O2Bez
O2base - O2 x CO [ppm] x 1.25

Nitrogen oxide:

NOx [mg/scm] =O2base - O2Bez
O2base - O2 x NOx [ppm] x 2.05

Sulfur dioxide:SO2 [mg/scm] =O2base- O2Bez
x SO2 [ppm] x 2.86
O2base - O2		O2base:
		
O2:
			
		
O2Bez:
			
O2 Reference value
Measured oxygen
content as %Fuel-specificoxygen reference index as %

56

K.6

Recommended rinsing times

Recommended rinsing times in measurements with high concentrations and longer
measurements:
Rinse instrument: Expose probe to fresh air and start flue gas analysis
Parameter
CO

COlow

NO

NOlow

NO2

SO2

Concentration [ppm]
50
100
200
500
1000
2000
4000
8000
10
20
50
100
200
500
50
100
200
500
1000
2000
4000
10
20
50
100
200
300
10
20
50
100
200
500
50
100
200
500
1000
2000
5000

Measurement duration [min] Recommended rinsing time [min]
60
30
20
10
10
10
5
5
60
30
20
10
10
10
60
45
30
20
10
10
5
60
45
30
20
10
10
60
45
30
20
10
10
60
30
20
15
10
10
5

5
5
10
10
15
20
30
60
5
5
10
10
15
20
5
5
5
10
10
20
60
5
5
5
10
10
20
5
5
5
10
10
20
5
5
10
10
10
20
40

57

K.7

Cross-sensitivities

Target gas
O2 0
CO(H2)
CO(H2 low)
NO 0
NOlow
NO2
SO2
SOlow
Target gas

CO
0
---0
0
<5 %4
<5 %4

Cross-gas
NO
01
02
02
02(w)3
-0
0
0

SO2
0
02
02
6 %4
02
<-2 %
0-0--

NO2
02
02
<5 %4
--110 %4
-110 %4

Cross-gas
H2
Cl2
HCl
HCN
CO2
O2
0
0
01
0
see5
CO(H2)060000CO(H2 low)
06
0
0
0
0
NO
0
0
0
0
0
1 No influence up to a few 1000 ppm; for cross-concentrations in the %-range 0.3 %2 With non-saturated filter.
3 w = changeable filter
4 Is compensated, if the cross-gas in the instrument is also measured (i.e. if the instrument is equipped with thecorresponding sensors).
5 0.3 % O2 per 1 % CO2; is compensated
6 after H2-compensation

58

L.

Accessories/spare parts

Designation
Modular flue gas probes
Modular flue gas probe 335 mm, 500 °C, thermocouple 0.8 mm
Modular flue gas probe 700 mm, 500 °C, thermocouple 0.8 mm
Modular flue gas probe 335 mm, 1000 °C, thermocouple 0.8 mm
Modular flue gas probe 700 mm, 1000 °C, thermocouple 0.8 mm
Modular flue gas probe with preliminary filter 335 mm, 1000 °C, thermocouple 0.8 mm
Modular flue gas probe with preliminary filter 700 mm, 1000 °C, thermocouple 0.8 mm
Probe modules/accessories for modular flue gas probes
Module probe shaft 700 mm, 500 °C, thermocouple 0.8 mm
Module probe shaft 335 mm, 1000 °C, thermocouple 0.8 mm
Module probe shaft 700 mm, 1000 °C, thermocouple 0.8 mm
Module probe shaft with preliminary filter 335 mm, 1000 °C, thermocouple 0.8 mm
Module probe shaft with preliminary filter 700 mm, 1000 °C, thermocouple 0.8 mm
Extension lead
Particle filter, 10 pcs
Replacement preliminary filter for modular flue gas probe with preliminary filter (2 pcs.)
Industry engine probe
Engine probe without pre-filter
Engine probe with pre-filter
Thermocouple, Tmax. 1000 °C
Spare probe shaft for engine probe with pre-filter
Other probes/sensors
Pitot tube, 350 mm
Pitot tube, 1000 mm
Pitot tube, 750 mm incl. temperature measurement and heat shield
Connection hose, silicone, Length 5 m, load to maximal 700 hPa (mbar)
Ambient air temperature (AT) sensor, 60 mm
Retrofit sensors
NOlow retrofitting kit
NO retrofitting kit
COlow - , H2 - comp.- retrofitting kit
CO -, H2 - comp.-retrofitting kit
NO2 retrofitting kit
SO2 retrofitting kit

Article no.
0600 9766
0600 9767
0600 8764
0600 8765
0600 8766
0600 8767
on demand
0554 8764
0554 8765
on demandon demand
0554 1202
0554 3385
0554 3372
0600 7555
0600 7556
0600 8898
on demand
0635 2145
0635 2345
0635 2042
0554 0440
0600 9797
0554 2152
0554 2150
0554 2102
0554 2100
0554 2200
0554 2250

59

Designation
Replacement sensors
O2 sensor
CO-, H2-comp. sensor
NOlow sensor
NO sensor
NO2 sensor
SO2 sensor
COlow -, H2 - comp. sensor
Spare filters
CO -, H2 - comp. sensor
NO sensor
Other retrofiting kits
Bluetooth
Other accessories
Infrared printerBluetooth printer incl. rechargeable battery and charging adapter
Mains unit
Charger with replacement battery
Replacement battery
Replacement thermal paper for printer (6 rolls)
testo EasyEmission PC configuration software
Transport case
External gas processing

Article no.
0393 0000
0393 0100
0393 0152
0393 0150
0393 0200
0393 0250
0393 0102
0554 4100
0554 4150
only retrofittable by testo service
0554 0549
0554 0620
0554 1096
0554 1103
0515 0100 / 0515 0107
0554.0568
0554 3334
0516 3340
0554 3501

testo SE & Co. KGaA
Testo-Straße 179853 Lenzkirch
Germany
Tel.: +49 7653 681-0
Fax: +49 7653 681-7699
E-Mail: info@testo.de
www.testo.de

0970 3401 en 13 – 03.2024