35,0(6Operating Manual
Translation of the original instructions

PocketMonitor PMT
PMT 01p, 01p sep, 01p sep/out
PMT 05p, 05p sep, 05p sep/out
PMT 30p, 30p sep, 30p sep/out
PMT 70iag, 70iag sep, 70iag sep/out
PMT 70icu, 70icu sep, 70icu sep/out
PMT 120iag, 120iag sep, 120iag sep/out
PMT 120icu, 120icu sep, 120icu sep/out

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IMPORTANT!
READ CAREFULLY BEFORE USE.
KEEP FOR FUTURE USE.

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Table of contents
1

Basic safety instructions

8

2

Symbol explanation

10

3

About this operating manual

114

Conditions at the installation site

115

Important information for devices with lithium-ion battery

12

6

5.1

Storing the battery................................................................................ 12

5.2

Replacing the battery............................................................................ 12

5.3

If the battery is damaged...................................................................... 12

5.4

Disposing of the battery........................................................................ 12

Introduction

13

6.1

System description............................................................................... 13

6.2

Measuring principles............................................................................. 14

6.3

Differentiation of device types by means of identification plates............. 14

7

Transportation

15

8

Connect the PocketMonitor PMT by cable

16

9

4

8.1

Connect device types sep or sep/out with suitable cable and operating
unit....................................................................................................... 16

8.2

Connect device types sep/out with the cable of the analog current loop
interface................................................................................................ 17

Installation/Removal

18

9.1

Prepare installation................................................................................ 18

9.2

Mounting position................................................................................. 18

9.3

Align the device.................................................................................... 19

9.4

Position the device in the laser system.................................................. 20

9.5

Remove the device from the laser system............................................. 20

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10Control Elements

21

11

Display on the device

22

12

Measuring with the PocketMonitor PMT

23

12.1

Safety instructions................................................................................ 23

12.2

Maximum permissible laser power........................................................ 24

12.3

Measure via the operating unit.............................................................. 24

12.4

12.3.1

Get ready for measurement..................................................... 24

12.3.2

Perform measurement............................................................. 25

Measure via the analog current loop interface(only device types sep/out).................................................................... 26
12.4.1

Get ready for measurement..................................................... 26

12.4.2

Perform measurement of the laser power................................ 28

12.4.3

Perform measurement of the absorber temperature................ 29

12.5

Cool the absorber in water for series measurements............................. 30

12.6

Possible errors...................................................................................... 30

13

Maintenance and service

31

14

Measures for the product disposal

31

15

Declaration of conformity

32

16

Technical data

33

17

16.1

Device types p...................................................................................... 33

16.2

Device types icu/iag.............................................................................. 35

Dimensions

37

17.1

PMT 01p............................................................................................... 37

17.2

PMT 01p sep, 01p sep/out................................................................... 38

17.3

PMT 05p............................................................................................... 39

17.4

PMT 05p sep, 05p sep/out................................................................... 40

17.5

PMT 30p............................................................................................... 41

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17.6

PMT 30p sep, 30p sep/out................................................................... 42

17.7

PMT 70icu, 70iag.................................................................................. 43

17.8

PMT 70iag sep, 70iag sep/out
PMT 70icu sep, 70icu sep/out.............................................................. 44

17.9

PMT 120icu, 120iag.............................................................................. 45

17.10 PMT 120iag sep, 120iag sep/out
PMT 120icu sep, 120icu sep/out.......................................................... 46

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35,0(6PRIMES - The Company
PRIMES manufactures measuring devices used to analyze laser beams. These devices
are employed for the diagnostics of high-power lasers ranging from CO2 lasers andsolid-state lasers to diode lasers. A wavelength range from infrared through to near UV
is covered, offering a wide variety of measuring devices to determine the following beam
parameters:••••

Laser power
Beam dimensions and position of an unfocused beam
Beam dimensions and position of a focused beam
Beam quality factor M²

Development, production and calibration of the measuring devices is performed at
PRIMES. This guarantees optimum quality, excellent service, and a short reaction time,
providing the basis for us to meet all of our customers’ requirements quickly and reliably.

PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
GermanyTel +49 6157 9878-0
info@primes.dewww.primes.de

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PocketMonitor PMT

Basic safety instructions

Intended use
The PocketMonitor PMT is used to measure power in the beam path of lasers. Pleaseobserve and adhere to the specifications and limit values given in chapter 16, „Technicaldata“, on page 33. Other forms of usage are improper. The information contained inthis operating manual must be strictly observed to ensure proper use of the device.
Measurements with the PocketMonitor PMT should be performed exclusively with astatic (unmoving) laser beam. Moving beams can produce faulty power measurements.
Using the device for unspecified use is strictly prohibited by the manufacturer. By usage
other than intended the device can be damaged or destroyed. This poses an increased
health hazard up to fatal injuries. When operating the device, it must be ensured that
there are no potential hazards to human health.
The device itself does not emit any laser radiation. During the measurement, however, the laser beam is guided onto the device which causes reflected radiation (laser
class 4). That is why the applying safety regulations are to be observed and necessary
protective measures need to be taken.
Observing applicable safety regulations
Startup is only permitted once it has been ensured that the entire machine into
which the PocketMonitor PMT is installed meets the requirements of the EC Directive 2006/42/EC and laser beam protection regulations, including DIN EN ISO 12254,
DIN EN 60825 and TROS laser beam (technical regulations for the occupational safety
ordinance for artificial optical radiation) as well as the corresponding implementation
regulations.
Taking necessary safety measures
If there are people present within the danger zone of visible or invisible laser radiation,for example near laser systems that are only partly covered, open beam guidance systems or laser processing areas, the following safety measures need to be taken:•
Please wear safety goggles adapted to the power, power density, laser wave
length and operating mode of the laser beam source in use.
•
Depending on the laser source, it may be necessary to wear suitable protective
clothing or protective gloves.
•
Please protect yourself from direct laser radiation, scattered radiation as well asfrom beams generated from laser radiation (e.g. by using appropriate shielding
walls or by weakening the radiation to a harmless level).
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Please use beam guidance- or beam absorber elements which do not emit any
hazardous particles as soon as they get in contact with laser radiation and which
resist the beam sufficiently.
Please install safety switches and/or emergency safety mechanisms which enable
an immediate closure of the laser shutter.
Please ensure a stable mounting of the device in order to prevent a relative motionof the device to the beam axis of the laser and thus to reduce the risk of strayradiation. This is the only way to ensure optimum performance during the measurement.

Employing qualified personnel
The device may only be operated by qualified personnel. The qualified personnel musthave been instructed in the installation and operation of the device and must have abasic understanding of working with high-power lasers, beam guiding systems andfocusing units.
Conversions, modifications and repairs
The device must not be modified, neither constructionally nor safety-related, without
our explicit permission. The device must not be opened e.g. to carry out unauthorized
repairs. Modifications of any kind will result in the exclusion of our liability for resulting
damages.
Liability disclaimer
The manufacturer and the distributor of the measuring devices do not claim liability fordamages or injuries of any kind resulting from an improper use or handling of the devices. Neither the manufacturer nor the distributor can be held liable by the buyer or theuser for damages to people, material or financial losses due to a direct or indirect use of
the measuring devices.

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PocketMonitor PMT

Symbol explanation

The following symbols and signal words indicate possible residual risks:

DANGER
means that death or serious physical injuries will occur if necessary safety
precautions are not taken.

WARNINGmeans that death or serious physical injuries can occur if necessary safety
precautions are not taken.

CAUTIONmeans that a slight physical injury can occur if necessary safety precautions
are not taken.

NOTICEmeans that property damages can occur if necessary safety precautions are
not taken.
The device itself or the packing bears the following symbols to indicate requirements and possible dangers:
Read and observe the operating instructions and safety guidelines before
startup!

The device contains a non-removable lithium ion battery. In order to prevent
health hazards and damage to the environment, the battery must be disposed of as required by the applicable national and international laws.

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35,0(6Further symbols that are not safety-related:
Here you can find useful information and helpful hints.

With the CE marking the manufacturer guarantees that his product is in conformity with the EC guidelines.
Call for observing (visual feedback from the device).

X

3

Call for action

About this operating manualThis documentation describes the installation and operation of the PocketMonitor PMT
and performing measurements.

4
•
•
•
•

Conditions at the installation site
The device must not be operated in a condensing atmosphere.
The ambient air must be free of organic gases.
Protect the device from splashes of water and dust.
Operate the device in closed rooms only.

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PocketMonitor PMT

Important information for devices with lithium-ion battery

The device is equipped with a non-removable lithium ion battery. While operating thedevice, it is therefore essential to observe and adhere to the requirements of chapter 16,„Technical data“, on page 33 in regards to environmental conditions.

5.1

Storing the battery

Store the device in a cool, dry place. Do not expose the device to direct sunlight.

5.2

Replacing the battery

With the integrated lithium ion battery, approx. 10 000 measurements can be performed. The service life of the lithium ion battery is therefore approx. 2 years. The battery is checked at every service and replaced if necessary.

5.3

If the battery is damaged

Do not open the device to replace or remove the battery. When the battery is damaged,
fluids (electrolytes) may leak out. These are flammable, contact with the eyes or skin
may cause irritation. Vapors may irritate the eyes, respiratory organs, and skin. Fire orhigh temperatures can cause a serious explosion. Heating or fire can release poisonous
gases. Hazardous smoke may be released when ignited.

5.4

Disposing of the battery

In order to prevent hazards to health and damage to the environment, the device must
be disposed of as required by the applicable national and international laws. Please
send the device to PRIMES as described in chapter 14, „Measures for the productdisposal“, on page 31.
If you are located outside of the EU, please contact your PRIMES distribution partner for
matters concerning device disposal.

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6

Introduction

6.1

System description

The device consists of the absorber with operating unit. Both components are connected to each other either with a swivel joint or a cable.
For device types with swivel joint, the absorber protects the display and the operating
elements from damage and soiling when folded up.
Device types with cable are optionally available with an analog current loop interface inthe operating unit (device types sep/out).
The different device types and their type designation can be found in the chapter 6.3 on
page 14.
Differentiation according toabsorber type
Device types icu/iag:cylindrical absorber

Device types with cable
Device types sep:cable

Device types p:plane absorber

Device types sep/out:
cable and current loop interface
Fig. 6.1:

Mechanical construction of the device

The display shows either the measured laser power in watts or the temperature of theabsorber in degrees Celsius.
A non-removable lithium ion battery supplies the device with power for approx. 10 000
measurements.

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PocketMonitor PMT

Measuring principles

The device measures the laser power according to the calorimetric principle. The
absorber of the device is irradiated with the laser for a short period of time. The temperature of the absorber is measured between the beginning and end of the irradiation.
Based on the temperature rise and the thermal properties of the absorber, the microprocessor-based electronics are able to calculate the laser power with high accuracy.

6.3

Differentiation of device types by means of identification plates

The devices differ by the maximum permissible laser power for which the device isdesigned, by the shape of the absorber, by the mechanical construction (swivel joint orcable) and by an optional analog current loop interface.
Example of identification plate

Tab. 6.1:

14

Maximum permissible
laser power01

0.1 kW05

0.5 kW

30

3 kW

70

7 kW

120

12 kW

Differentiation by maximum permissible laser power

Example of identification plate

Tab. 6.2:

Designation

Designation

Absorber typep

Plane absorber

icu

Cylindrical absorberwith conical reflector

iag

Cylindrical absorber withconical silver reflector

Differentiation by absorber type

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Example of identification plate

Tab. 6.3:

7

Designation

Construction

without

With swivel joint,
without current loop
interfacesepWith cable,
without current loop
interface

sep/out

With cable,with current loop
interface

Differentiation by mechanical construction and analog current loop interface

Transportation
NOTICE
Damaging/Destruction of the device
Hard impacts or dropping the device can damage the electrical components.
Touching the absorber can lead to burn-in by the laser radiation at the
points of contact. Burn-in lead to damage to the absorber and increase
the scattered radiation.
X

Handle the device carefully when transporting or installing it.

X

To avoid contamination, close and lock the unfolded operating unit (onlydevice types with swivel joint).

X

Do not touch the inlet aperture of the absorber.

X

Only transport the device in the original PRIMES transport box.

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8Connect the PocketMonitor PMT by cable

8.1

Connect device types sep or sep/out with suitable cable andoperating unit

Absorber, operating unit and cable are calibrated together and marked on the identification plates with matching serial numbers S/N. Therefore only connect the matchingcomponents with matching serial numbers S/N.
1.
2.
3.

Connect the cable to the matching absorber.
Connect the cable to the matching operating unit.
Check that the components are correctly assigned to each other using the serial
numbers S/N.

Corresponding
identification plates

Fig. 8.1:

16Connecting device types sep or sep/out with calibrated cable and operating unit

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8.2

Connect device types sep/out with the cable of the analog current
loop interface

With device types sep/out there is an analog current loop interface in the operating unit,
via which you can control the device remotely and read out the measured values.
The interface is designed as a 5-pin socket with screw locking (pin assignment see Tab.
8.1 on page 17). A suitable angle plug is included in the scope of delivery.
1.
2.
3.
4.

Connect the cable to the plug (not shown).
Connect the plug to the analog current loop interface.
Tighten the screw to lock the connection.
Check the correct connection of the components.

Analog current loop interface

Fig. 8.2:

Operating unit with analog current loop interface

Pin diagram socket(top view, plug-in side)
3
2

4

1

Tab. 8.1:

5PinFunction

1

Ground2

Supply voltage input: 24 V, max. 30 mA

3

Current output:
4 − 20 mA (load resistor: max. 500 Ohm)

4

Input: pulse for setting a 20 s measurement: 24 V

5

Input: pulse for setting a 10 s measurement: 24 V

Socket assignment of the analog current loop interface

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35,0(69Installation/Removal

9.1

Prepare installation

1.
2.

PocketMonitor PMT

Switch off the laser source.
Ensure that moving parts, e.g. robot arms, etc. are at a standstill and that theycannot be set in motion unintentionally.

DANGER
Serious eye or skin injury due to laser radiation
If the stability of the device is not guaranteed or the inlet aperture is notcentered and mounted perpendicular to the laser beam, increased scattered or directed reflection of the laser beam will occur.
X

Place the device according to chapter 9.2 on page 18 in a way that
ensures, that the device can not shift or fall.

X

Align the device as described in chapter 9.3 on page 19.

NOTICE
Damaging/Destruction of the device
Touching the absorber can lead to burn-in by the laser radiation at the
points of contact. Burn-in lead to damage to the absorber and increase
the scattered radiation.
X

9.2

Do not touch the inlet aperture of the absorber.

Mounting position

Place the absorber of the PocketMonitor PMT on heat-insulating material so that themeasurement result is not distorted. If the heat of the absorber is dissipated into theunderground, then the display value is falsified (lower values).
Place the absorber of the PocketMonitor PMT on a horizontal, stable and vibration-freebase. The absorber is fixed by the base without additional fixing material.
Avoid strong airflows, e.g. at a nozzle or at the output coupler, as these can lower themeasured values.

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9.3

Align the device

The absorber of the PocketMonitor PMT must be aligned to the laser beam. The laser
beam must hit the inlet aperture in the middle (± 2 mm) and perpendicular. Please mind
and adhere to the specifications and limit values given in chapter 16, „Technical data“,on page 33.
Normally, the device is positioned underneath the focus position of the beam path for
power measurement (divergent laser radiation). If this is not possible, the device can bepositioned above the focus.
Please note that the laser radiation is convergent and the permitted power density on
the absorber is not exceeded.

Maximum
beam diameterat the inlet aperturefor devices withcylindrical absorber:
36 mm

Focusing optics

Maximum
beam diameterat the inlet aperturefor devices with plane
absorber (depending
on device type):
15 mm, 27.5 mm,
48 mm

Focusing plane

Plane of theinlet aperture

Pocket Monitor
PMT 70/120 with conical reflector
and cylindrical absorberFig. 9.1:

Pocket Monitor
PMT 01/05/30
with plane absorber

Alignment to the laser beam

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9.4
1.
2.
•
3.

PocketMonitor PMT

Position the device in the laser system
Only device types with swivel joint: Open the operating unit.
Position the device in the laser system.
Please note the information in the chapter 9.2 on page 18.
Align the device with the laser beam as described in chapter 9.3 on page 19.

9.5

Remove the device from the laser system

CAUTION
Burns due to hot components
After a measurement the absorber is hot. Touching the absorber can leadto burns.
X Let the device cool down for an adequate period of time. The coolingtime varies depending on the laser power and the irradiation time.

NOTICE
Damaging/Destruction of the device
Only device types with swivel joint: If the absorber is still hot, the control
unit can be damaged after closing.
X

1.
2.
3.
•
4.
5.

20

Do not close the folded-out control unit until the absorber has cooled
down to below 60 °C.

Switch off the laser source.
Ensure that moving parts, e.g. robot arms, etc. are at a standstill and that theycannot be set in motion unintentionally.
To check the temperature of the absorber, press the TEMP button.
Do not continue until the absorber has cooled down to below 60 °C.
Remove the device from the laser system. To do this, grip the device by the absorber handle, the operating unit or the swivel joint.
Only device types with swivel joint: Close the control unit to protect the device
from dirt.

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10Control Elements

Display

Operating buttons
Fig. 10.1: Operating unit of the device

On the operating unit, you will find three operating buttons with which you can control
the following functions:
ButtonFunction
Switch on the device
Set irradiation time 10 s
Switch on the device
Set irradiation time 20 s
Check temperature of the absorber
To switch off the device manually, keep this button pressed and simultaneously
press the button

for 1 s.

Tab. 10.1: Functions of the operating keys

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Display on the device

The display on the device shows the measured power in watts. The device types aredesigned for different maximum permissible laser powers and have displays with different resolutions (see Tab. 11.1 on page 22).
A resolution of 0.1 W or 0.01 W means that the instrument measures in steps of 1/10 W
or 1/100 W. The measured values are displayed precisely to the first or second decimal
place. A resolution of 1 W means that the instrument measures in steps of 1 W. Decimal
places are not displayed.
Device type

Maximum permissible
laser power

Resolution

Measuringsteps

PMT 01

100 W

0.01 W

1/100 W

PMT 05

500 W

0.1 W

1/10 W

PMT 303 000 W

1W

1W

PMT 707 000 W

1W

1W

PMT 120

12 000 W

1W

1W

Tab. 11.1: Display resolution depending on the device type

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Measuring with the PocketMonitor PMT

12.1

Safety instructions

35,0(6DANGER
Severe eye or skin injury due to laser radiation
During the measurement the laser beam is guided on the device, whichcauses scattered or directed reflection of the laser beam (laser class 4).
X

Please wear safety goggles adapted to the power, power density, laser
wave length and operating mode of the laser beam source in use.

X

Wear suitable protective clothing and protective gloves.

X

Protect yourself from laser radiation with separating devices (e.g. by using appropriate shielding).

CAUTION
Burns due to hot components
After a measurement the absorber is hot. Touching the absorber can leadto burns.
X Let the device cool down for an adequate period of time. The coolingtime varies depending on the laser power and the irradiation time.
X To cool down the absorber you can immerse the absorber in cold water.
To do this, grip the device by the absorber handle, the operating unit or
the swivel joint.
X Do not immerse the operating unit and the swivel joint in water.

NOTICE
Damaging/Destruction of the device
The maximum permissible laser power of a device type applies to an irradiation time of 10 s. At an irradiation time of 20 s the maximum permissible laser power is divided in half.
X

Observe the limit values in Tab. 12.1 on page 24.

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Maximum permissible laser power
Maximum permissible laser power in W

Device type

Irradiation time 10 s

Irradiation time 20 s

PMT 01

100

50

PMT 05500

250

PMT 30

3 000

1500

PMT 70

7 000

3500

PMT 120

12 0006000

Tab. 12.1: Maximum permissible laser power depending on the irradiation time

12.3

Measure via the operating unit

12.3.1

Get ready for measurement

1.

Observe the safety instructions in chapter 12.1 on page 23.

Only device types with swivel joint
1. Loosen the locknut screw at the swivel
joint.
2.

Press the lock button and fold the operating unit into the desired position.

3.

Fasten the locknut at the swivel joint
again.

Lock button

Locknut

For all device types
4. Remove any protective foil from theabsorber.
5. To switch on the device, press the 10 s
or 20 s button.
•
The device is ready to measure after
approx. 5 seconds.

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6.
•

•

To check the temperature of the absorber, press the TEMP button.
Do not continue until the absorber hascooled down to room temperature(± 5 °C). This is an important requirement
for accurate measurement results.
The absorber can remain hot for a longtime after a measurement. You can prepare the absorber for the next measurement by cooling it in water according tochapter 12.5 on page 30.

12.3.2

Perform measurement

1.

Observe the safety instructions in chapter 12.1 on page 23.

2.

Set the laser to an on-time that corresponds to the desired irradiation time (10 s or 20 s).
If you switch the laser on manually, the temporal inaccuracy is included in the measured
value.
The device does not check the actual irradiation time.

•3.

To set the desired irradiation time (10 sor 20 s), press the 10 s or 20 s button.
The display shows a value drifting slightly
around zero.

4.
•

Switch on the laser.
To do so, use the shutter if possible.
The power control of lasers oftencauses overshooting, which distorts themeasurement.
The radiation heats up the absorber. As
soon as the temperature of the absorberrises above a pre-set threshold value, themeasurement begins.
The display flashes during the measurement.

•

5.
•

Switch off the laser.
After the irradiation time has run out thethermalization time begins (depending on
the absorber type 10 s – 60 s).
During the thermalization time acountdown is running. Afterwards themeasured power is displayed.

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or

...

...

...

...........

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After approx. 5 minutes the device switches off automatically.
To switch off the device manually, keep
the TEMP button pressed and simultaneously press the 20 s button for 1 s.

12.4

Measure via the analog current loop interface(only device types sep/out)

The device types sep/out have an analog current interface, which allows you to control
the device remotely and read out the measured values.
The interface supplies the device with power and operates continuously. Therefore ameasurement can be started at any time.
Using two formulas, the absorber temperature and laser power can be calculated fromthe direct current output. A current of 4 mA corresponds to the zero point. A current of
20 mA corresponds to the maximum display range.
12.4.1

Get ready for measurement

1.

Observe the safety instructions in chapter 12.1 on page 23.

2.

Remove any protective foil from the absorber.

3.

Connect the current loop interface with the cable according to chapter 8.2 on page 17.

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4.
•
5.
6.

•

•

Switch on the supply voltage at pin 2(24 V, max. 30 mA)
While the supply voltage is applied, thedevice is in continuous operation.
Measure the output current at pin 3 with
an ammeter.
Calculate the temperature of the absorber using the output current according to Tab. 12.2 on page 27.
Do not continue until the absorber hascooled down to room temperature(± 5 °C). This is an important requirement
for accurate measurement results.
The absorber can remain hot for a longtime after a measurement. You can prepare the absorber for the next measurement by cooling it in water according tochapter 12.5 on page 30.

Current output
4 – 20 mA
3
2

4

1

5

Supply voltage input 24 V
Pin diagram socket (top view, plug-in side)

Device type

Formula for calculating the absorber temperature T (in degrees Celsius)

PMT 01T = (I − 4 mA) × 13.652 °C/mA

PMT 05T = (I − 4 mA) × 6.827 °C/mA

PMT 30T = (I − 4 mA) × 6.827 °C/mA

PMT 70T = (I − 4 mA) × 13.652 °C/mA

PMT 120

T = (I − 4 mA) × 27.307 °C/mA

Tab. 12.2: Formula for calculating the absorber temperature (I = output current in mA)

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Perform measurement of the laser power

1.

Observe the safety instructions in chapter 12.1 on page 23.

2.

Set the laser to an on-time that corresponds to the desired irradiation time (10 s or 20 s).
If you switch the laser on manually, the temporal inaccuracy is included in the measured
value.
The device does not check the actual irradiation time.

•
3.
•
•

To set the desired irradiation time (10 sor 20 s), set a 24 V pulse.
at pin 4: setting of 20 s
at pin 5: setting of 10 s

24 V pulse: 20 s

32

4
24 V pulse: 10 s
1

5

Pin diagram socket (top view, plug-in side)
4.
•
•
5.
•
•
6.

•

7.

8.

•

28

Switch on the laser.
To do so, use the shutter if possible. The power control of lasers often causes overshooting, which distorts the measurement.
The radiation heats up the absorber. As soon as the temperature of the absorber rises
above a pre-set threshold value, the measurement begins.
Switch off the laser.
After the irradiation time has run out the thermalization time begins (depending on theabsorber type 10 s – 60 s).
During thermalization time the output current is reset to 4 mA.
To determine an offset, measure theoutput current at pin 3 with an ammeter
during the thermalization time.
If the actual measured current deviatesfrom the 4 mA value, you can use thismeasurement deviation to correct anoffset.
To determine the laser power, measure
the output current at pin 3 with an ammeter after the thermalization time.
Calculate the laser power from theoutput current according to Tab. 12.3 on
page 29.
The current output after the thermalization time remains constant until a newpulse is applied to pin 4 or pin 5.

Current output
4 – 20 mA
3
2

4

1

5

Pin diagram socket (top view, plug-in side)

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Device type

Formula for calculating the laser power P

PMT 01P = (I − 4 mA) × 6.8268 W/mA

PMT 05P = (I − 4 mA) × 34.134 W/mA

PMT 30P = (I − 4 mA) × 341.34 W/mA

PMT 70P = (I − 4 mA) × 682.68 W/mA

PMT 120P = (I − 4 mA) × 1365.36 W/mA

Tab. 12.3: Formula for calculating the laser power(I = output current after the thermalization time in mA)

12.4.3

Perform measurement of the absorber temperature

After measuring the laser power, the output current remains constant regardless ofthe current absorber temperature. If you want to read out the absorber temperature,proceed as follows:
1.
•

2.
3.

Set a 24 V pulse at pin 4 or pin 5.
Do not switch on the laser. As soon as
the temperature of the absorber rises
above a pre-set threshold value, themeasurement of the laser power begins.
Measure the output current at pin 3.
Calculate the temperature of the absorber using the output current according to Tab. 12.2 on page 27.

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24 V pulse: 20 s

32

4
24 V pulse: 10 s
1

5

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12.5

PocketMonitor PMT

Cool the absorber in water for series measurements

The absorber can remain hot for a long time after a measurement. You can prepare theabsorber for the next measurement by immersing it in cold water. Proceed as follows:
1.
2.
•
3.
4.
•

Grip the unit by the absorber handle, the operating unit or the swivel joint.
Immerse the absorber in cold water.
Do not immerse the operating unit and the swivel joint in water.
Observe the temperature display. Remove the absorber from the water as soon as
it has cooled down to room temperature (± 5 °C).
Dry the absorber with compressed air.
After cooling with water, the absorber must be completely dry. Evaporating water
would falsify the measurement result due to its high heat capacity.

12.6

Possible errors

Error

Possible cause

Measured values are lower than expected.

•
•
•
•

The absorber is damp.
The absorber is placed in a strong air flow.
The absorber stands on a heat dissipatingbase.
The absorber was moved during themeasurement.

Measured values are higher than expected.

•

The irradiation time set on the device andthe actual irradiation time by the laser are
different.

The display shows 100 W instead of
3 000 W (expected value).

•

The the TEMP button was accidentallypressed after the measurement. Now thetemperature is displayed, usually about 70 °C
to 120 °C.

Tab. 12.4: Possible errors

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Maintenance and service

The operator is responsible for determining the maintenance intervals for the measuring
device.
PRIMES recommends a maintenance interval of 12 months for inspection and validationor calibration.
If the device is used only sporadically, the maintenance interval can be extended up to
24 months.

14

Measures for the product disposal

Due to the Electrical and Electronic Equipment Act (“Elektro-G“) PRIMES is obliged todispose PRIMES measuring devices manufactured after August, 2005, free of charge.
PRIMES is a registered manufacturer in the German “Used Appliances Register“(Elektro-Altgeräte-Register “EAR“) with the number WEEE-reg.-no. DE65549202.
Provided that you are located in the EU, you are welcome to send your PRIMES devices
to the following address, where they will be disposed free of charge (this service does
not include shipping costs):
PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
Germany

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Declaration of conformity

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16

Technical data

16.1

Device types p

Measurement parameters

PMT 01p 1)

PMT 05p 1)

PMT 30p 1)

Laser power range

5 – 100 W 2)

25 – 500 W 2

150 – 3000 W 2

Wavelength range

800 – 1100 nm oder 10,6 μm

Max. beam diameter on the absorber(inlet aperture)

15 mm

27.5 mm

48 mm

Max. power density on
the absorber(inlet aperture)for < 1 kW

2.5 kW/cm²

2.5 kW/cm²

2.5 kW/cm²

for < 3 kW——

1.5 kW/cm²

Irradiation time

10 s (at maximum permissible laser power),
20 s (at 50 % of the maximum permissible laser
power)

Device parameters
Max. angle of incidence perpendicular
to inlet aperture±5°

Max. centered tolerance± 2.0 mm

Measuring accuracy±4%

Reproducibility±2%

Dimensions and Weight
Absorber height

20 mm

15 mm

20 mm

Absorber diameter

25 mm

45 mm

79 mm

Weight (approx.)

530 g

560 g

670 g

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PocketMonitor PMT

PMT 01p 1)

PMT 05p 1)

Operating temperature range

10 – 40 °C

Storage temperature range

5 – 50 °C

Reference temperature
Permissible relative humidity(non-condensing)

PMT 30p 1)

22 °C
10 – 80 %Protection
Degree of protection

IP 51

1)

Please refer to the specifications on the identification plate for the type of your device.

2)

The stated limit values are to be understood in correlation with the permitted maximum energy(E = P · t).

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16.2

Device types icu/iag

Measurement parameters

PMT 70iag, 70icu 1)

PMT 120iag, 120icu 1)

Laser power range

350 – 7000 W 2)

500 – 12 000 W 2)

Wavelength range

800 – 1100 nm oder 10.6 μm

Max. beam diameter on the absorber(inlet aperture)

36 mm

Max. power density on the absorber(inlet aperture)

5 kW/cm² for 5 kW

Irradiation time

10 s (at maximum permissible laser power),
20 s (at 50 % of the maximum permissible laser
power)

Device parameters
Max. angle of incidence perpendicular
to inlet aperture±5°

Max. centered tolerance± 2.0 mm

Measuring accuracy±4%

Reproducibility±2%

Dimensions and Weight
Absorber height

75 mm

Absorber diameter

79 mm

99 mm

Weight (approx.)1110 g1550 g

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PMT 70iag, 70icu 1)

PMT 120iag, 120icu 1)

Operating temperature range

10 – 40 °C

Storage temperature range

5 – 50 °C

Reference temperature
Permissible relative humidity(non-condensing)

22 °C
10 – 80 %Protection
Degree of protection

IP 51

1)

Please refer to the specifications on the identification plate for the type of your device.

2)

The stated limit values are to be understood in correlation with the permitted maximum energy(E = P · t).

36

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Dimensions

17.1

PMT 01p

Ø 25

5.9

Ø 79

279

Ø 79

17

5

All dimensions in mm (general tolerance ISO 2768-v)

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PocketMonitor PMT

PMT 01p sep, 01p sep/out
12.5

32.5

90

Ø 79

Ø
27

Ø 79

6
20

All dimensions in mm (general tolerance ISO 2768-v)

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17.3

PMT 05p

Ø 45

Ø 79

200

Ø 79

15

32.5
All dimensions in mm (general tolerance ISO 2768-v)

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PMT 05p sep, 05p sep/out
12.5

32.5

90

Ø 79

Ø
27

Ø 79

7.5
15

All dimensions in mm (general tolerance ISO 2768-v)

40

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17.5

PMT 30p
20

279

Ø 79

Ø 79

32.5
All dimensions in mm (general tolerance ISO 2768-v)

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PocketMonitor PMT

PMT 30p sep, 30p sep/out
12.5

32.5

90

Ø 79

Ø
27

Ø 79

8
20

All dimensions in mm (general tolerance ISO 2768-v)

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17.7

PMT 70icu, 70iag
75

279

Ø 79

Ø 79

32.5
All dimensions in mm (general tolerance ISO 2768-v)

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PMT 70iag sep, 70iag sep/out
PMT 70icu sep, 70icu sep/out
12.5

32.5

90

Ø 79

Ø

63

27
75

Ø 79

All dimensions in mm (general tolerance ISO 2768-v)

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17.9

PMT 120icu, 120iag

Ø 99

289

75

Ø 79

32.5

All dimensions in mm (general tolerance ISO 2768-v)

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17.10 PMT 120iag sep, 120iag sep/out
PMT 120icu sep, 120icu sep/out
12.5

32.5

Ø 79

90

63

Ø
27

Ø 99

75

All dimensions in mm (general tolerance ISO 2768-v)

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PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
GermanyTel +49 6157 9878-0
info@primes.dewww.primes.de