Data sheet
testo 340

Flue gas analyzer forindustry
testo 340 – Portable measuring
instrument for industrial emission
measurement

O2

Measuring range extension for unrestricted measurement athigh gas concentrations

CO

Flue gas analysis with up to 4 gas sensors – freely
configurable

COlow

Large selection of probes
Bluetooth interface

NO

Convenient measurement data management
NOlow

TÜV-tested /EN norm

NO2

SO2

The handy, easy-to-operate emission measuring instrument

The unique measuring range extension allows unrestrictedtesto 340 is the right tool for many different emission

measurements to be carried out even at high gas

measurements. The compact design and the reliable

concentrations. The testo 340 is equipped with antechnology make it the ideal measuring instrument forO2 sensor as standard. Three further gas sensors can becommissioning, service and maintenance work and in test

configured individually, in order to be able to adapt themeasurements on industrial burners, stationary industrial

instrument optimally to the respective measurement task.

engines, gas turbines and thermal processes.

The instrument can also be operated remotely from yourAndrroid Smartphone or tablet using the free App.

www.testo.com

testo 340

Ordering data

testo 340
testo 340 flue gas analyzer, incl. rechargeable
battery, calibration protocol and carrying strap,
equipped with O2 sensor,
integrated flow/differential pressure
measurement, single dilution and dilutionof all sensors
Part no. 0632 3340

testo 340 must be equipped with a second gas sensor otherwise theanalyzer cannot function. Max. 3 additional sensors can be fitted.

Options
Option CO sensor, 0 to 10000 ppm, Resolution 1 ppm
Option COlow sensor, 0 to 500 ppm, Resolution 0.1 ppm
Option NO sensor, 0 to 4000 ppm, Resolution 1 ppm
Option NOlow sensor, 0 to 300 ppm, Resolution 0.1 ppm
Option NO2 sensor, 0 to 500 ppm, Resolution 0.1 ppm
Option: SO2 sensor, 0 to 5,000 ppm, Resolution 1 ppm
Option: BLUETOOTH® module

Accessories

0516 3400

Mains unit international 100-240 V AC / 6.3 V DC for mains operation or battery charging in instrument, for mains
operation or battery charging in instrument0554 1096

Software „easyEmission“, incl. USB connection cable instrument-PC0554 3334

Multiple license/“easyEmission“ software

0554 3338

Testo fast printer IrDA with wireless infrared interface; 1 roll thermal paper; 4 AA batteries

0554 0549

Testo Bluetooth®/IRDA printer incl. 1 roll of printer paper, rechargeable battery and mains unit

0554 0620

Spare thermal paper for printer, permanent ink

0554 0568

Replacement filter for NO sensor (1 pcs.), blocks transverse gas SO20554 4150

Replacement CO sensor (1 off.), blocks transverse gas SO2 and NO0554 4100

Calibration Certificates

2Part no.

Transport case for flue gas analyzer and probes

Part no.

ISO calibration certificate/flue gas

0520 0055

ISO calibration certificate velocity, hot wire, vane anemometer, Pitot tube; calibration points 5; 10; 15; 20 m/s

0520 0034

testo 340

Ordering suggestions

Your low-budget entry
into industrial emission
measurement

Monitoring and adjustment
work on stationary industrial
engines
Part no.

Part no.

testo 340 flue gas analyzer
0632 3340
Option CO (H2 compensated) measurement module, 0 to 10,000 ppm
Option BLUETOOTH® module
Flue gas probe modular 335 mm immersion depth
0600 9766International mains unit 100-240 V0554 1096
testo BLUETOOTH® printer0554 0620
Transport case for measuring instrument and probes
0516 3400

testo 340 flue gas analyzer
0632 3340
Option CO (H2 compensated) measurement module, 0 to 10,000 ppm
Option NO measurement module, 0 to 4,000 ppm
Option NO2 measurement module, 0 to 500 ppm
Flue gas probe for industrial engines, 335 mm immersion depth*
0600 7555
International mains unit 100-240 V
0554 1096
Software „easyEmission“
0554 3334
Transport case for measuring instrument and probes
0516 3340*For measurement on stationary diesel engines, we recommend theflue gas probe with probe pre-filter (0600 7556).

Service and maintenancework on industrial burners andfurnaces

Measurements on turbines

Part no.
testo 340 flue gas analyzer
0632 3340
Option CO (H2 compensated) measurement module, 0 to 10,000 ppm
Option NO measurement module, 0 to 4,000 ppm*
Option SO2 measurement module, 0 to 5,000 ppm
Flue gas probe modular 700 mm immersion depth
0600 8765
Software „easyEmission“
0554 3334
Transport case for measuring instrument and probes
0516 3340*For the measurement of low NO values, we recommend theNOlow sensor (0393 1152).

Part no.
testo 340 flue gas analyzer
0632 3340
Option CO (H2 compensated) measurement module, 0 to 10,000 ppm*
Option NOlow measurement module, 0 to 300 ppm
Option NO2 measurement module, 0 to 500 ppm
Flue gas probe for industrial engines, 335 mm immersion depth
0600 7555
International mains unit 100-240 V
0554 1096
Software „easyEmission“
0554 3334
Transport case for measuring instrument and probes
0516 3340*For the measurement of low CO values, we recommend theCOlow sensor (0393 1102).

3

testo 340

Gas sampling probes
Standard gas sampling probes: Modular flue gas probes, available in 2 lengths, incl. probe stop, NiCr-Ni
thermocouple, 2.2 m hose and particle filter

0600 9766

Modular flue gas probe 700 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI) Tmax 500 °C
and NO2/SO2 special hose 2.2 m

0600 9767

Modular flue gas probe 335 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI) Tmax 1000 °C
and NO2/SO2 special hose 2.2 m0600 8764

Modular flue gas probe, 700 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI) Tmax 1000°C and NO2/SO2 special hose 2.2 m0600 8765

Modular flue gas probe with pre-filter Ø 14 mm 335 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI)
Tmax 1000°C and NO2/SO2 special hose 2.2 m

0600 8766

Modular flue gas probe with pre-filter Ø 14 mm 700 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI)
Tmax 1000°C and NO2/SO2 special hose 2.2 m0600 8767

Probe accesories modular gas sampling probes
Hose extension; 2.8 m; extension cable for probe

Part no.
0554 1202

Probe shaft with pre-filter Ø 14 mm, length selectable up to 2500 mm, incl. cone, Ø 8 mm,thermocouple NiCr-Ni (TI) Tmax. 500 °C

OnrequestProbe shaft with pre-filter Ø 14 mm, length selectable up to 2500 mm, incl. cone, Ø 8 mm,
thermocouple NiCr-Ni (TI) Tmax. 1000 °C

OnrequestSpare probe pre-filter (sinter filter) 2 off0554 3372

Spare dirt filter, modular probe; 10 off

0554 3385

Probe shaft, length 700 mm, incl. cone, Ø 8 mm, Tmax 500 °C0554 9767

Probe shaft, length 335 mm, incl. cone, Ø 8 mm, Tmax 1000 °C

0554 8764

Probe shaft, length 700 mm, incl. cone, Ø 8 mm, Tmax. 1000 °C0554 8765

Gas sampling probe for measurement on industrial engines

Part no.

Flue gas probe for industrial engines, 335 mm immersion depth incl. probe stop and heat protection plate,Tmax. +1,000 °C, special hose for NO2-/SO2 measurements, length 4 m

0600 7555

Flue gas probe for industrial engines with probe shaft preliminary filter, 335 mm immersion depth incl. probe stop andheat protection plate, Tmax. +1,000 °C, special hose for NO2-/SO2 measurements, length 4 m

0600 7556

Thermocouple for flue gas temperature measurement, NiCr-Ni, length 400 mm, Tmax +1,000 °C, with 4 m connecting
cable and additional heat protection

0600 8898

Temperature probes

Part no.

Mini ambient air probe; for separate ambient air temperature measurement; 0 to +80 °C

0600 3692

Combustion air temperature probe, immersion depth 60 mm

0600 9797

Pitot tubes

4Part no.

Modular flue gas probe 335 mm immersion depth, incl. cone, thermocouple NiCr-Ni (TI) Tmax 500 °C
and NO2/SO2 special hose 2.2 m

Part no.

Pitot tube, 350 mm long, stainless steel, measures flow velocity0635 2145

Pitot tube, 1000 mm long, stainless steel, measures flow velocity0635 2345

Connection hose; silicone; length 5 m; max. load 700 hPa (mbar)

0554 0440

Pitot tube, stainless steel, 750 mm long, measures flow velocity with temperature,
3x hoses (5 m long) and heat shield

0635 2042

testo 340

Gas sampling probes
Industrial probes

Details

Industrial probe set 1200 °C
consisting of:- unheated handle- unheated probe shaft up to 1200 °C flue gas temperature- unheated gas sampling hose incl. inline filter, length 4 m- thermocouple Type K, length 1.2 m

Probe shaft: Tmax. +1200 °C
Length 1.0 m, Ø 12 mmMaterial 2.4856 alloy 625
Handle: Tmax. +600 °C
Material: 1.4404 stainless steel
Gas sampling hose: 2-chamber hose with PTFE
inner core; length 4.0 m
TC: Type K,
Length 1.2 m, Ø 2 mm
Tmax. +1200 °C

0600 7610

Probe shaft: Tmax. +1800 °C
Material Al2O3 > 99.7%
Length 1.0 m, Ø 12 mm
Gas sampling hose: 2-chamber hose with PTFE
inner core; length 4.0 m
Handle: Tmax. +600 °C
Material: 1.4404 stainless steel

0600 7620

Probe shaft: temperature-proof up to +600 °C
Voltage supply 230 V / 50 Hz
Length 1.0 m, Ø 25 mm
Heating temperature range +200 °C
Material stainless steel 1.4571
Gas sampling hose: corrugated hose with PTFE
inner core
Length 4.0 m; outside diameter 34 mm
Heating temperature range > +120 °C
TC: Type K
Length 1.2 m, Ø 2 mm
Tmax. +1200 °C

0600 7630Probe shaft: Tmax. +1200 °C
Length 1.0 m, Ø 12 mmMaterial 2.4856 alloy 625

0600 7617

Type K
Length 2.2 m, Ø 2 mm
Tmax. +1200 °C

0600 7615

Material porous silicon carbide
Tmax. +1,000 °C,
Length 105 mm, Ø 30 mm
Filtration grade 10 μm

0600 7616

Corrugated hose with PTFE inner core
Length 4.0 m; outside diameter 34 mm
Heating temperature range > +120 °C

on request

The set can optionally come with an extension tube and probe
preliminary filter.
Industrial probe set 1800 °C
consisting of:- unheated handle- unheated probe shaft up to 1800 °C flue gas temperature- unheated gas sampling hose incl. inline filter, length 4 m

For temperature measurements > +1370 °C, we recommend athermocouple Type S.
Heated industrial probe set
consisting of:- heated probe shaft up to 600 °C flue gas temperature- heated gas sampling hose, length 4 m- thermocouple Type K, length 1.2 m

The set can optionally come with an extension tube and probe
preliminary filter.
Extension tube 1200 °C for extending the industrial probe set
1200 °C (0600 7610) and heated industrial probe set (0600 7630)
The extension tube can be screwed directly onto the unheatedprobe shaft up to +1200 °C and the heated probe shaft up to+600 °C.*
Thermocouple Type K, length 2.2 m

Industrial probe preliminary filter for dust-laden flue gas
The probe preliminary filter can be screwed directly onto theunheated probe shaft up to +1200 °C and the heated probe shaftup to +600 °C.*
Heated gas sampling hosePart no.

Transport case for probes
Suitable for all probes with a total length > 335 mm.

0516 7600

Spare dirt filter (10 off)0554 3371* For ease of tightening and releasing, we recommend the use of ceramic paste on the thread. This is available from retailers.

5testo 340

Technical data
Measuring range

Accuracy ±1 digit

Resolution

O2 measurement

0 to 25 Vol. %±0.2 Vol. %0.01 Vol. %Adjustment
time t90< 20 sec

CO measurement(H2 compensated)

0 to 10.000 ppm±10 ppm or ±10% of m.v. (0 to 200 ppm)
±20 ppm or ±5% of m.v. (201 to 2.000 ppm)
±10% of m.v. (2.001 to 10.000 ppm)

1 ppm

< 40 sec

COlow measurement(H2 compensated)

0 to 500 ppm±2 ppm (0 to 39.9 ppm)
±5% of m.v. (remaining range)X

0.1 ppm< 40 secX
data corresponds to 20°C ambient temperature. Additionaltemperature coefficient 0.25% of reading/K.

NO measurement

0 to 4.000 ppm±5 ppm (0 to 99 ppm)
±5% of m.v. (100 to 1.999 ppm)
±10% of m.v. (2.000 to 4.000 ppm)

1 ppm

< 30 sec

NOlow measurement

0 to 300 ppm±2 ppm (0 to 39.9 ppm)
±5% of m.v. (remaining range)

0.1 ppm< 30 sec

NO2 measurement*

0 to 500 ppm±10 ppm (0 to 199 ppm)
±5% of m.v. (remaining range)

0.1 ppm< 40 sec

SO2 measurement*

0 to 5.000 ppm±10 ppm (0 to 99 ppm)
±10% of m.v. (remaining range)

1 ppm< 40 sec

Temperature meas.

-40 to +1.200 °C±0.5 °C (0 to +99 °C)±0.5 % of m.v. (remaining range)

0.1 °C

Draught
measurement-40 to +40 hPa±0.03 hPa (-2.99 to +2.99 hPa)±1.5 % of m.v. (remaining range)

0.01 hPa

Differential pressure
measurement-200 to 200 hPa±0.5 hPa (-49.9 to 49.9 hPa)±1.5 % of m.v. (remaining range)

0.1 hPa

Absolute pressuremeasurement

600 to +1.150 hPa±10 hPa

1 hPa

Probe type Type K (NiCr-Ni)

Derived parameters
Efficiency

0 to 120 %0.1 %Flue gas loss

0 to 99.9 %0.1 %Exhaust gas dewpoint

0 to 99.9 °C

CO2 measurement

0 to CO2 max.

0.1 °C±0.2 Vol. %0.1 Vol. %< 40 sec(Calculated from O2)*To avoid absorption, a maximum measurement duration of 2 hours should not be exceeded.

Country permits BLUETOOTH® wireless transmission for testo
340
The BLUETOOTH® radio module used by Testo is permitted for thefollowing countries and may only be used in those countries, i.e. theBLUETOOTH® wireless transmission may not be used in any othercountry!

Europe including all EU member states
Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia,Finland, France, Germany, Great Britain, Greece, Hungary, Ireland, Italy,Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden and Turkey
European countries (EFTA)
Iceland, Liechtenstein, Norway, Switzerland
Non-European countries
Canada, USA, Japan, Ukraine, Australia, Columbia, El Salvador, Mexico,Venezuela, Ecuador, New Zealand, Bolivia, Dominican Republic, Peru,Chile, Cuba, Costa Rica, Nicaragua, Korea, Belarus.

6testo 340

Technical data
Measuring range extension
Single dilution, factor 5 (standard)

Measuring range

Accuracy

Resolution

CO measurement (H2 compensated)

700 ppm to 50.000 ppm±10 % of m.v. (additional error)

1 ppm

COlow measurement (H2 compensated)

300 ppm to 2.500 ppm±10 % of m.v. (additional error)

0.1 ppm

NO measurement500 ppm to 20.000 ppm±10 % of m.v. (additional error)

1 ppm

NOlow measurement

150 ppm to 1.500 ppm±10 % of m.v. (additional error)

0,1 ppm

SO2 measurement

500 ppm to 25.000 ppm±10 % of m.v. (additional error)

1 ppm

Dilution of all sensors, factor 2 (standard)O2 measurement

When measuring range extension switched on, over all sensors:±1 Vol.% additional error
0 to 25 Vol.%(0 to 4.99 Vol.%)±0.5 Vol.% additional error(5 to 25 Vol.%)

CO measurement (H2 compensated)

700 ppm to 20.000 ppm±10 % of m.v. (additional error)

1 ppm

COlow measurement (H2 compensated)

300 ppm to 1.000 ppm±10 % of m.v. (additional error)

0.1 ppm

NO measurement

500 ppm to 8.000 ppm±10 % of m.v. (additional error)

1 ppm

NOlow measurement

150 ppm to 600 ppm±10 % of m.v. (additional error)

0.1 ppm

NO2 measurement

200 ppm to 1.000 ppm±10 % of m.v. (additional error)

0.1 ppm

SO2 measurement

500 ppm to 10.000 ppm±10 % of m.v. (additional error)

1 ppm

0.01 Vol.%

General technical data
MemoryMaximum
100 folders
Per folder
Max. 10 sites
Per site	Max. 200 logs
The max. number of logs is determined by
the number of folders or sites
User-defined
fuels
Regulated diaphragmpump
Pump flow
Hose lengthMax. pos. press./flue gas
Max. neg. press./flue gas

Display

Graphic display 160 x 240 pixels

Power supply

Battery block 3.7 V / 2.4 Ah
Mains unit 6.3 V / 2 A

Housing material

TPE PC

Protection classIP40

10 user-defined fuels incl. test gas as fuelGuarantee
Measuring instrument
Gas sensors

0.6 l/min (regulated)max. 7.8 m (corresponds to two probe
hose extensions)+50 mbar-200 mbar

Pumps
Solenoid valves
Thermocouples
Rechargeable batteries
ProbesGuarantee conditions

Weight960 gDimensions

283 x 103 x 65 mm

Storage temperature-20 to +50 °C

Operating temperature-5 to +50 °C

2 years
CO, NO, COlow, NOlow, NO2, SO2: 1 year
O2: 1.5 years
0,5 years
0,5 years
1 year
1 year
2 years
https://www.testo.com/guarantee

7Subject to change without notice.

1981 7054/msp/I/01.2021

testo 340

www.testo.com