Trotec BP21, TP7 Operating Manual

OPERATING MANUAL

PYROMETER

BP21

EN

TRT-BA-BP21-TC-001-EN

1 Operating manual – Pyrometer BP21 EN

Symbols

Danger!

Warns of a hazard which can lead to injuries.

Risk from laser radiation!

Warns of injury risk from laser radiation.

Caution!

Warns of a hazard which can lead to damage to property.

The current version of the operating manual can be found at:
www.trotec.de

Legal notice

This release replaces all previous versions. No part of this
publication may be reproduced without written permission from
TROTEC

®

. The same applies for electronically processing,
duplicating or spreading the publication. Subject to technical
changes. All rights reserved. Trademarks are used without
guarantee that they may be used freely and primarily following
the spelling of the manufacturer. Product names are registered.
Changes to construction in the interests of constant
improvements to the product, as well as changes to the shape
and colour are reserved.
The scope of delivery may vary from product images. This
document was created with all due care. TROTEC

®

accepts no
liability whatsoever for possible mistakes or omissions.
The only party responsible for determining measured results to be
valid, drawing conclusions and deriving actions is the user!
TROTEC

®

accepts no claims of warranty for the correctness of
the determined measured values or measured results. Further,
TROTEC

®

accepts no liability whatsoever for possible mistakes or
damage which have been caused by utilising the determined
measured results. © TROTEC

®

Functional description

The pyrometer BP21 uses an infrared sensor to measure surface
temperatures without contact. An integrated dual laser pointer
can be switched on for the precise determination of the
measuring spot diameter. Additionally, the degree of emission of
the material to be measured can be set. The device can show
either the maximum or minimum value of the measurement.
The device further features an alarm function. When exceeding or
falling below the specified values, the device emits an acoustic
signal.
The display can be illuminated as needed.
When not in use, an automatic switch-off saves the battery.

Device depiction

Table of contents

Notes regarding the operating manual ............................ 1

Information about the device........................................... 1

Technical data ................................................................ 2

Safety ............................................................................. 2

Transport and storage..................................................... 3

Operation........................................................................ 3

Measuring principle ........................................................ 5

Maintenance and repair .................................................. 6

Disposal.......................................................................... 6

Declaration of conformity ................................................ 6

Notes regarding the operating manual

Information about the device

No. Operating element

1Display
2 Lamp button
3 Mode key
4 Laser button
5 Battery compartment with cover
6 Measurement button
7 Infrared sensor
8 Dual laser pointer

5

7

6

8

2

1

4

3

EN Operating manual – Pyrometer BP21 2

Display

Scope of delivery

• 1 x Pyrometer BP21

•1 x 9 V battery

•1x Device bag

• 1 x Getting started guide

Carefully read the operating manual before using the device
and keep it within reach!

• Do not use the device in atmospheres containing oil, sulphur,
chlorine or salt.

• Protect the device from permanent direct sunlight.

• Avoid looking directly into the laser beam.

• Never point the laser beam at people or animals.

• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.

• Observe the storage and operating conditions (see chapter
Technical data).

Intended use

This device is exclusively intended for measuring temperature
with an infrared sensor in the measuring range specified in the
technical data. People who use this device must have read and
understood the operating manual, especially the Safety chapter.

Improper use

The device must not be used in potentially explosive
atmospheres. It must not be pointed at people.
TROTEC

®

accepts no liability for damages resulting from
improper use. In such a case, entitlements to a warranty are
forfeited.

Personnel qualifications

People who use this device must:

• have read and understood the operating manual, especially
the Safety chapter.

• be aware of the dangers that occur when working with laser
measuring devices.

No. Display element

9 Indication of the lower alarm threshold
10 Indication of the temperature unit
11 Battery indication
12 MIN indication
13 Indication of the degree of emission
14 MAX MIN temperature display
15 MAX indication
16 Measurement value display top
17 SCAN indication
18 HOLD indication
19 Laser indication
20 Indication for continuous measurement
21 Indication of the upper alarm threshold

Technical data

Model BP21
Weight 185 g
Dimensions H x W x D 160 mm x 53 mm x 45.6 mm
Measuring range -35 °C to 800 °C (-31 °F to 1472 °F)
Accuracy ±2 °C (±4 °F) or 2.0 % of the measured value

(the higher value applies)
Measuring range resolution 0.1 °C / °F
Operating temperature 0 to 50 °C (32 °F to 122 °F)
Relative humidity during

operation

Max. 80 % relative humidity

Storage conditions -20 °C to 60 °C
Laser output < 1 mW (630–670 nm)
Laser Class II, 630 to 670 nm < 1 mW
Degree of emission Adjustable
Distance to measuring spot

diameter ratio

12:1

Spectral
sensitivity

8~14 μm

Reaction time < 1 s
Power supply 9 V battery
Switch off After approx. 8 seconds of non-use

MAX

SCAN HOLD

MIN

°C

°F

LH

10

11

15

16

20

12

191817

9

21

13

14

Safety

3 Operating manual – Pyrometer BP21 EN

Residual risks

Risk from laser radiation!

Class 2 laser radiation.
Lasers of class 2 only radiate in the visible range and
during continuous wave operation (lasting beam) no more
than 1 milliwatt (mW) of output will be emitted. Looking
directly into the laser beam for a longer period of time
(more than 0.25 seconds) can cause damage to the
retina.
Avoid looking directly into the laser beam. Never look into
the laser beam using optical aides. Do not suppress the
winking reflex when looking into the laser beam
unintentionally. Never point the laser beam at people or
animals.

Danger!

Keep a sufficient distance away from sources of heat.

Danger!

Do not leave the packaging lying around. Children may
use it as a dangerous toy.

Danger!

The device is not a toy and does not belong in the hands
of children.

Danger!

Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way.
Observe the personnel qualifications.

Caution!

To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.

Caution!

Do not use abrasive cleaners or solvents to clean the
device.

Transport

Use the supplied device bag to transport the device.

Storage

When the device is not being used, observe the following storage
conditions:

•Dry,

• Protected from dust and direct sunlight.

• With a plastic cover to protect it from invasive dust, if
necessary.

• The storage temperature is the same as the range given in
the chapter Technical data.

• When storing the device for a long time, remove the batteries.

• Preferably use the supplied device bag to store the device.

Inserting the battery

• Insert the supplied battery before first use.

Caution!

Make certain that the surface of the device is dry and the
device is switched off.

1. Open the cover of the battery compartment (23).

2. Use the battery clip (22) to connect the new battery with
correct polarity.

3. Close the cover of the battery compartment (23).

Transport and storage

Operation

22

23

EN Operating manual – Pyrometer BP21 4

Carrying out a measurement

Note:

Note that moving from a cold area to a warm area can lead to
condensation forming on the device's circuit board. This physical
and unavoidable effect can falsify the measurement. In this case,
the display shows either no measured values or they are
incorrect. Wait a few minutes until the device has become
adjusted to the changed conditions before carrying out a
measurement.

• Ensure that the surface to be measured is free of dust, dirt or
similar substances.

• To be able to gain exact measurement results on surfaces
which reflect heavily, stick matt masking tape to the surface
or apply matt black paint with a very high and known degree
of emission.

• Note the 12:1 ratio of the distance to the measuring spot size.
For accurate measurements the measuring object should be
at least twice as large as the measuring spot.

1. Point the device at the object to be measured.

2. Press the Measurement button (6).

– Hold onto the Measurement button (6) if you want to

perform a prolonged measurement.

– The device turns on and carries out a measurement. The

SCAN indication (17) appears on the display.

– The current measured value is indicated.

3. Let go of the Measurement button (6) again.

– The device stops measuring. The HOLD symbol (18)

appears in the display. Depending on the setting of the
device, either the maximum or minimum value (14) of the
last measurement is shown in addition.

The device switches off after approx. 8 seconds without being
used.

Switching the laser pointer on or off

Ex works the laser pointer is switched off.

Danger due to laser radiation!

Please observe that with a switched-on laser the laser
pointer will go on as soon as you press the Measurement
button (6) or activate continuous measurement.

1. Press the Laser button (4).
– The Laser pointer on symbol (19) appears on the display.

– The laser pointer is switched on.

2. Press the Laser button (4) again.
– The Laser pointer on symbol (19) is no longer displayed.

– The laser pointer is switched off.

The device memorizes the selected setting when switching off.

Switching the display illumination on or off

Ex works the display illumination is switched off.

1. Press the Lamp button (2).
– The display illumination will be switched on.

2. Press the Lamp button (2) again.

– The display illumination will be switched off.

The device memorizes the selected setting when switching off.

Further setting options

By use of the Mode key (3) you can access the extended choice
of settings. Alarm thresholds and temperature units can be
selected here, for instance.

1. Press the Mode key (3) several times to reach the desired
setting:

You can adjust the respectively selected setting by use of the
Laser button (4) (up) or the Lamp button (2) (down).

Note:

With activated continuous measurement it is not possible to
switch the background illumination or the laser beam on and off.
Select the corresponding setting before activating continuous
measurement.

Example: Setting the degree of emission:

1. Press the Mode key (3) once.

– Extended setting mode will be started.
– The Degree of emission indication (13) flashes.

– The value can be adjusted upwards using the Laser

button (4).

– The value can be adjusted downwards using the Lamp

button (2).

– The value range is between 1.00 and 0.10.

Number Menu option

1 x Setting the degree of emission
2 x Setting the temperature unit
3 x Activating maximum or minimum value
4 x Activating continuous measurement
5 x Enabling/disabling the upper alarm threshold
6 x Entering the upper alarm threshold
7 x Enabling/disabling the lower alarm threshold
8 x Entering the lower alarm threshold

5 Operating manual – Pyrometer BP21 EN

The device measures the temperature by means of an infrared
sensor. Important factors playing a role in the temperature
measurement are the measuring spot diameter and the degree of
emission.

Measuring spot

Observe the ratio of the distance to the measuring spot diameter.
The larger the distance to the object, the larger the measuring
spot diameter and hence, the less precise the measured result,
for the device calculates an average temperature from all the
temperatures in the measuring spot.

Degree of emission

The degree of emission is used to describe the energy radiation
characteristics of a material.
Most organic materials have a degree of emission of 0.95. Metals
or shiny materials come with a much lower value.
A material's degree of emission depends on various factors such
as the material composition, its surface condition and
temperature. (In theory,) It can be between 0.1 and 1.
As a rule of thumb we can assume: When a material is rather dark
and its surface texture matt, it probably has a high degree of
emission. The brighter and smoother the surface of a material,
the lower will be its degree of emission, presumably. The higher
the degree of emission of the surface to be measured, the better
it is suited for non-contact temperature measurement by use of a
pyrometer or thermal imaging camera, since falsifying
temperature reflections become negligible. Nevertheless,
entering a degree of emission as appropriate as possible is
indispensable for a precise measurement.

Degree of emission table

Measuring principle

Material Degree of emission

Aluminium, roughened 0.1 to 0.3
Aluminium, alloy A3003, oxidized 0.3
Aluminium, oxidized 0.2 to 0.4
Asbestos 0.92 to 0.95
Tarmac 0.92 to 0.95
Basalt 0.7
Concrete 0.92 to 0.95
Bitumen 0.98 to 1.00
Lead, oxidized 0.2 to 0.6
Lead, rough 0.4

Spot 12.5 mm 100 mm
Distance 150 mm 1200 mm
D:S = 12:1 Laser

Infrared

Roofing felt 0.95
Ice 0.98
Iron (forged), blunt 0.9
Iron, oxidized 0.5 to 0.9
Iron, rusted 0.5 to 0.7
Enamel varnish, black 0.95
Earth 0.92 to 0.96
Paint (not alkaline) 0.90 to 0.95
Paint (non-metal) 0.95
Gypsum 0.6 to 0.95
Glass, pane 0.85 to 0.95
Rubber 0.92 to 0.95
Cast iron, molten 0.2 to 0.3
Cast iron, not oxidized 0.2
Skin 0.98
Haynes alloy 0.3 to 0.8
Radiator enamel 0.95
Timber (natural) 0.9 to 0.95
Inconel, electro-polished 0.15
Inconel, oxidized 0.7 to 0.95
Inconel, sand-blasted 0.3 to 0.6
Limestone 0.95 to 0.98
Carborundum 0.9
Ceramics 0.88 to 0.95
Gravel 0.95
Carbon, graphite 0.7 to 0.85
Carbon, not oxidized 0.8 to 0.9
Plastic, non-transparent 0.95
Copper, oxidized 0.4 to 0.8
Varnish 0.80 to 0.95
Marble 0.90 to 0.95
Brass, highly polished 0.3
Brass, oxidized 0.5
Molybdenum, oxidized 0.2 to 0.6
Nickel, oxidized 0.2 to 0.5
Paper (any colour) 0.9
Plastic 0.85 to 0.95
Plaster 0.90 to 0.95
Sand 0.9
Snow 0.9
Steel, heavy plate 0.4 to 0.6
Steel, cold-rolled 0.7 to 0.9
Steel, oxidized 0.7 to 0.9
Steel, polished sheet metal 0.1
Steel, stainless 0.1 to 0.8
Cloth 0.95
Wallpaper (non-metal) 0.95
Textiles (non-metal) 0.95
Titanium, oxidized 0.5 to 0.6
Clay 0.90 to 0.95
Water 0.93
Cement 0.90 to 0.96
Brick (rough) 0.90 to 0.95
Zinc, oxidized 0.1

Material Degree of emission

EN Operating manual – Pyrometer BP21 6

Battery change

The battery is to be changed when the battery indication (11)
lights up in the display or the device can no longer be switched
on. See Inserting the battery on page 3.

Cleaning

Clean the device with a soft, damp and lint-free cloth. Ensure that
no moisture enters the housing. Do not use any sprays, solvents,
alcohol-based cleaning agents or abrasive cleaners. Only use
clean water to moisten the cloth.

Repair

Do not modify the device. Never open the device housing or install
any spare parts. For repairs or device testing, contact the
manufacturer.

In the European Union, electronic equipment must not
be treated as domestic waste, but must be disposed of
professionally in accordance with Directive 2002/96/
EC of the European Parliament and Council of
27th January 2003 concerning old electrical and
electronic equipment. After the end of its use, please
dispose of this device in a manner appropriate to the
relevant legal requirements.

in accordance with the EC Low Voltage Directive 2006/95/EC and
the EC Directive 2004/108/EC about electromagnetic
compatibility.
Herewith, we declare that the pyrometer BP21 was developed,
constructed and produced in compliance with the named EC
directives.

The marking is found on the rear of the device.

Manufacturer:
Trotec GmbH & Co. KG
Grebbener Straße 7
D-52525 Heinsberg

Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Heinsberg, 31/03/2014

Managing Director: Detlef von der Lieck

Maintenance and repair

Disposal

Declaration of conformity

Trotec GmbH & Co. KG

Grebbener Str. 7
D-52525 Heinsberg

[phone]

[phone]

[e-mail]
www.trotec.com