Trotec BC25 User manual

TRT-BA-BC25-TC-001-EN
BC25
EN
OPERATING MANUAL
THERMOHYGROMETER

1 EN
Operating manual – thermohygrometer BC25
Table of contents
Notes regarding the operating manual.................................1
Safety .....................................................................................2
Information about the device................................................3
Transport and storage...........................................................7
Operation ...............................................................................7
Errors and faults....................................................................9
Maintenance and repair ......................................................10
Disposal ...............................................................................10
Notes regarding the operating manual
Symbols
Warning of electrical voltage
This symbol indicates dangers to the life and health of
persons due to electrical voltage.
Warning
This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.
Caution
This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.
Notice
This signal word indicates important information
(e.g. material damage), but does not indicate hazards.
Info
Information marked with this symbol helps you to carry
out your tasks quickly and safely.
Follow the manual
Information marked with this symbol indicates that the
operating manual must be observed.
You can download the current version of the operating manual
and the EU declaration of conformity via the following link:
BC25
http://hub.trotec.com/?id=39585
Legal notice
This release replaces all previous versions. No part of this
publication may be reproduced without written permission from
TrotecGmbH&Co.KG. 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GmbH&Co.KG accepts no liability whatsoever for
possible mistakes or omissions.
The only party responsible for determining valid measured
results, drawing conclusions and deriving actions is the user.
TrotecGmbH&Co.KG accepts no claims of warranty for the
correctness of the determined measured values or measured
results.
Further, TrotecGmbH&Co.KG accepts no liability whatsoever
for possible mistakes or damage which have been caused by
utilising the determined measured results.
© TrotecGmbH&Co.KG

EN 2
Operating manual – thermohygrometer BC25
Warranty and liability
The device complies with the fundamental health and safety
requirements of the applicable EU regulations and was tested at
the factory for perfect functionality multiple times.
If malfunctions occur nonetheless, please contact your dealer or
distributor.
When making a warranty claim, supply the device number (see
the rear of the device).
When manufacturer's instructions or legal regulations have not
been followed, or after unauthorised changes to the device are
made, the manufacturer is not responsible for the resulting
damages. Changes to the device or unauthorised replacement
of individual parts can drastically impact the electrical safety of
this product and will result in the loss of the warranty. Liability
does not extend to damages to people or property caused by the
device being used other than as described in the instructions in
this operating manual. Subject to changes to technical design
and model changes as part of constant development and
product improvement without prior notice.
No liability is accepted for damages resulting from improper
use. In such a case, any warranty claims will be voided also.
Safety
Read this manual carefully before starting or using the
device. Always store the manual in the immediate vicinity
of the device or its site of use!
Warning
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may
result in electric shock, fire and/ or serious injury.
Save all warnings and instructions for future
reference.
This appliance can be used by children aged from
8 years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and
user maintenance shall not be made by children
without supervision.
• Do not use the device in potentially explosive rooms.
• Do not use the device in aggressive atmosphere.
• The device may only be used in dry surroundings and must
not be used in the rain or at a relative humidity exceeding
the operating conditions.
• Protect the device from permanent direct sunlight.
• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.
• Do not open the device with a tool.
• Observe the storage and operating conditions (see chapter
Technical data).
Intended use
Only use the device for measuring the temperature and humidity
level in indoor areas or, in case of small or negligible amounts
of sunlight, in outdoor areas within the measuring range
specified in the technical data. Observe and comply with the
technical data. To use the device for its intended use, only use
accessories and spare parts which have been approved by
Trotec.
Improper use
Do not use the device in potentially explosive atmospheres, for
measurements in liquids or at live parts. Trotec accepts no
liability for damages resulting from improper use. In such a
case, any warranty claims be voided. Any unauthorised
modifications, alterations or structural changes to the device are
forbidden.

3 EN
Operating manual – thermohygrometer BC25
Personnel qualifications
People who use this device must:
• have read and understood the operating manual, especially
the Safety chapter.
Residual risks
Warning
Do not leave the packaging lying around. Children may
use it as a dangerous toy.
Warning
The device is not a toy and does not belong in the
hands of children.
Warning
Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!
Notice
To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.
Notice
Do not use abrasive cleaners or solvents to clean the
device.
Information about the device
Device description
The thermohygrometer BC25 can be used to determine the air,
dew point and wet-bulb temperature as well as the humidity
level of indoor areas.
For assessing the measurements, a Max/Min function
(maximum and minimum value), an average value and a Hold
function for freezing the currently measured value are also
available.
Moreover, the heat index (HI) and apparent temperature (WBGT
index) can be determined. A configurable alarm function issues
a warning as soon as a certain value is exceeded.
When not in use, an automatic switch-off saves the battery.
Heat index
The heat index, also referred to as humidex, is an indicator
developed in the 1970s by the American Steadman. It describes
the combined effect of temperature and (high) humidity levels
on the human body.
The higher the relative humidity, the worse or slower does the
moisture (perspiration) emitted by the human body evaporate as
the ambient air can only absorb little additional moisture.
This evaporation, however, is necessary for the human
organism to be able to regulate itself in case of strong heat or
physical exertion and to keep the core body temperature on a
healthy level. If this natural cooling mechanism is slowed down,
the body can no longer discharge the generated heat properly,
which results in so-called heat stress. Overheating or heat
strokes can be among the health consequences.
Even without any physical effort, high temperatures combined
with high humidity levels (muggy heat) are therefore generally
considered as unpleasant, while high temperatures and low
humidity values are more tolerable.
Sweating and the associated cooling effect are thus vitally
important for both humans and many mammals, and are
indispensable for the physical well-being.

EN 4
Operating manual – thermohygrometer BC25
wet-bulb globe temperature index (WBGT index)
The wet-bulb globe temperature index is a climate index
developed by the US army as early as in the 1950s. It serves to
specify the effects of the current climate on the human body.
Unlike the heat index, the WBGT does not only incorporate the
air temperature (dry-bulb temperature) and humidity level, but
also the wind speed, the wet-bulb and radiation temperature
(globe temperature) for assessing the outdoor thermal stress.
The wet-bulb temperature (or theoretical limit of cooling) is the
lowest temperature that can be reached through direct
evaporative cooling only. It is determined by wrapping a cotton
cloth soaked with distilled water around the measuring tip or
mercury bulb of a thermometer and then exposing it to the
environment. The cooling effect achieved by the evaporated
water can thus be measured and simulated for the perspiring
human body under these conditions.
The radiation temperature, which is also taken into
consideration, is measured inside a thin-walled matt black
globe reacting to the infrared heat radiation emitted by the sun.
When calculating the WBGT in indoor areas or outdoor areas
exposed to negligible amounts of sunlight, it can be assumed
that the radiation temperature has practically no influence. In
this case, the globe temperature is assumed to be identical with
the ambient temperature.
Therefore, the WBGT index is another indicator for determining
the climate effects on the human organism. It is, however, even
more informative than the heat index since additional
parameters are included in the calculation. Established as an
international standard, it is described in ISO7243 and
DINEN27243.
Device depiction
1 2
345
6
No. Designation
1 Measuring sensor
2 Display
3Mode button
4Hold button
5 Power button
6 Battery compartment with cover
Display
7 8 10
91211
14
13
16 15
18
20
17
19
No. Designation
7WBGT indication
8 Maximum value indication
9 Minimum value indication
10 Average value indication
11 HOLD indication
12 Battery status indication
13 Humidity level percentage indication
14 Air temperature unit °C / °F indication
15 Measurement value display
16 Wet bulb indication
17 Dew point indication
18 Relative humidity indication
19 HI indication
20 Temperature indication

5 EN
Operating manual – thermohygrometer BC25
Technical data
Parameter Value
Model BC25
Article number 3.510.205.008
Weight 52 g
Dimensions
(length x width x height)
142 mm x 20 mm x 36 mm
Temperature
Measuring range -20°C to +50 °C or -4°F to 122 °F
Accuracy ±0.6 °C (-20 °C to +50 °C)
Measuring range
resolution
0.1 °C or 0.1 °F
Relative humidity
Measuring range 0.0 % RH to 99.9 %RH
Accuracy ±3 %RH (10 % to 90 %)
±5 %RH (0 % to 10 % and 90 % to 99.9 %)
Measuring range
resolution
0.1 % RH
Reaction time < 15 seconds
Type of protection IP57
Operating conditions -20°C to 50 °C, <80 % RH (non-condensing)
Storage conditions -10°C to 50 °C, <80 % RH (non-condensing)
Automatic switch-off after approx. 15 minutes
Power supply 1 x CR2032 battery
Scope of delivery
• 1 x Thermohygrometer BC25
• 1 x CR2032 battery
• 1 x Quick guide
WBGT index
In the course of sports events, for instance, both the WBGT and
the HI index are increasingly used as an indication for a
potential physical stain and associated hazards.
Colour of
warning flag
Risk Effect WBGT °C WBGT °F
Black Extreme Overheating above 28°C above 82°F
Red High 23°C to 28°C 73°F to 82°F
Yellow Moderate 18°C to 22°C 65°F to 72
°F
Green Low below 18°C below 65°F
White Increased Supercooling below 10°C below 50°F
Source: American College of Sports Medicine
Info
The index is only intended to provide a basis of
information. Personal perceptions and heat-related
effects may differ.

EN 6
Operating manual – thermohygrometer BC25
HI index
25% 30% 35% 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100%
42° 48 50 52 55 57 59 62 64 66 68 71 73 75 77 80 82
41° 46 48 51 53 55 57 59 61 64 66 68 70 72 74 76 79
40° 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75
39° 43 45 47 49 51 53 55 57 59 61 63 65 66 68 70 72
38° 42 44 45 47 49 51 53 55 56 58 60 62 64 66 67 69
37° 40 42 44 45 47 49 51 52 54 56 58 59 61 63 65 66
36° 39 40 42 44 45 47 49 50 52 54 55 57 59 60 62 63
35° 37 39 40 42 44 45 47 48 50 51 53 54 56 58 59 61
34° 36 37 39 40 42 43 45 46 48 49 51 52 54 55 57 58
33° 34 36 37 39 40 41 43 44 46 47 48 50 51 53 54 55
32° 33 34 36 37 38 40 41 42 44 45 46 48 49 50 52 53
31° 32 33 34 35 37 38 39 40 42 43 44 45 47 48 49 50
30° 30 32 33 34 35 36 37 39 40 41 42 43 45 46 47 48
29° 29 30 31 32 33 35 36 37 38 39 40 41 42 43 45 46
28° 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
27° 27 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
26° 26 26 27 28 29 30 31 32 33 34 34 35 36 37 38 39
25° 25 25 26 27 27 28 29 30 31 32 33 34 34 35 36 37
24° 24 24 24 25 26 27 28 28 29 30 31 32 33 33 34 35
23° 23 23 23 24 25 25 26 27 28 28 29 30 31 32 32 33
22° 22 22 22 22 23 24 25 25 26 27 27 28 29 30 30 31
up to 29°C No discomfort
30°C to 34°C Slight discomfort
35°C to 39°C Caution: Limit intensive physical activity
40°C to 45°C Warning: Avoid physical activity
46°C to 53°C Danger: Overheating, stop all activities
above 54°C Danger: Potentially fatal heat stroke
Source: www.eurometeo.com
Info
The index is only intended to provide a basis of
information. Personal perceptions and heat-related
effects may differ.

7 EN
Operating manual – thermohygrometer BC25
Transport and storage
Notice
If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.
Transport
For transporting the device use a suitable bag to protect it from
external influences.
Storage
When the device is not being used, observe the following
storage conditions:
• dry and protected from frost and heat.
• protected from dust and direct sunlight.
• with a cover to protect it from invasive dust, if necessary.
• Remove the batteries from the device.
Operation
Inserting / Changing the batteries
Notice
Make sure that the surface of the device is dry and the
device is switched off.
1. Open the battery compartment by unscrewing it with a
suitable object (e.g. a coin).
2. Remove the battery cover.
3. Insert the battery (1 x CR2032 battery) into the battery
compartment with correct polarity.
4. Screw the cover back on the battery compartment.
Switch-on and measurements
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.
1. Press the Power button(5).
ðThe display is switched on and the device is ready for
operation.
ðThe TEMP indication(20) and the currently measured
temperature value are displayed.
2. Point the device at the area to be measured.
ðWait for a moment to achieve a stable measured value.

EN 8
Operating manual – thermohygrometer BC25
Selecting the measuring mode
After switch-on, the device displays the temperature (TEMP
indication, 20).
The following measuring modes are available:
Measuring mode Description
TEMP Ambient temperature
RH Relative humidity
HI Heat index
DP Dew point temperature
WB Wet-bulb temperature
WBGT Wet-bulb globe temperature index
(WBGT index)
Please proceed as follows to set the measuring mode:
1. Repeatedly press the Mode button(3) until the desired
measuring mode is displayed.
Setting the HOLD function
1. Press the Hold button(4).
ðThe current value will be held.
2. Press the Hold button(4) again.
ðThe display again indicates the current measured value.
Setting the MAX/MIN/AVG function
Info
These functions can only be used in the TEMP and RH
measuring modes.
You can view the highest, lowest or average temperature or
relative humidity value from the current measuring interval.
Please proceed as follows:
1. Briefly press the Power button(5).
ðThe MAX indication(8) appears on the display.
ðThe display now indicates the highest temperature or
humidity value measured since the device was
switched on in the selected measuring mode.
2. Press the Power button(5) again.
ðThe MIN indication(9) appears on the display.
ðThe display now indicates the lowest temperature or
humidity value measured since the device was
switched on.
3. Press the Power button(5) again.
ðThe AVG indication(10) appears on the display.
ðThe display now indicates the average temperature and
humidity values measured since the device was
switched on.
4. Press the Power button(5) again.
ðThe display again indicates the current measured value.
Changing the unit °C / °F
The default setting for the temperature unit is °C.
Please proceed as follows to change the temperature unit:
1. Switch off the device by pressing the Power button(5) and
holding it for approx.5s.
2. Simultaneously press the power button(5) and the Mode
button(3).
ðThe currently selected unit °C or °F is displayed.
3. Press the Mode button(3) to change the unit.
4. Afterwards repeatedly press the Power button(5) until the
measured temperature value is displayed again.

9 EN
Operating manual – thermohygrometer BC25
Configuring the alarm for HI and WBGT index
You can define values for the HI and WBGT index above which
an acoustic alarm is triggered. In default setting, the alarm
function is deactivated.
Please proceed as follows to configure the alarm function:
1. Switch off the device by pressing the Power button(5) and
holding it for approx.5s.
2. Simultaneously press the power button(5) and the Mode
button(3).
ðThe currently selected unit °C or °F is displayed.
3. Press the Power button(5) again.
ðThe HI indication and the A-of message appear on the
display.
4. Press the Mode button(3) to activate (A-on) or
deactivate (A-of) the alarm function for the HI index.
5. Press the Power button(5) to save the setting.
ðIf the alarm function for the HI index is activated, the
alarm value can now be determined. If the alarm
function is deactivated, please continue with step8.
6. Press the Mode button(3) to increase the alarm value in
steps of 0.1.
Press and hold the Mode button(3) to increase the value
faster or in larger steps.
7. Press the Power button(5) to save the alarm value for the
HI index.
ðThe WBGT indication and the A-of message appear on
the display.
8. Press the Mode button(3) to activate (A-on) or
deactivate (A-of) the alarm function for the WBGT index.
ðIf the alarm function for the WBGT index is activated,
the alarm value can now be determined.
9. Press the Mode button(3) to increase the alarm value in
steps of 0.1.
Press and hold the Mode button(3) to increase the value
faster or in larger steps.
10. Press the Power button(5) to save the alarm value for the
WBGT index.
ðThe display again indicates the current measured value.
ðThe selected settings are saved.
Automatic switch-off
In default setting, the automatic switch-off function is activated.
The device switches off when not in use for 15 minutes.
To deactivate automatic switch-off, please proceed as follows:
1. Switch off the device by pressing the Power button(5) and
holding it for approx.5s.
2. Simultaneously press the Power button(5) and the
Hold button(4) until the message S-no is displayed.
ðAutomatic switch-off is permanently deactivated.
Info
If you switch off the device manually, the automatic
switch-off setting is reset, i.e. automatic switch-off is
activated again when the device is switched back on.
Switch-off
If automatic switch-off is activated, the device switches off after
15 minutes of non-use.
1. Press the Power button(5) for approx. 5 s.
ðThe device is switched off.
Errors and faults
The following error messages can be displayed in the
measurement value display(15):
Error No. Cause Remedy
E -2 Defective humidity sensor Please contact the
customer service.
E -3 Defective temperature sensor
E -4 Operating temperature too high
E -5 Operating temperature too low
E -6 Hardware fault