Trotec BC25 User manual

TRT-BA-BC25-TC230102TTRT05-002-EN
BC25
EN
ORIGINAL INSTRUCTIONS
THERMOHYGROMETER

2 EN
thermohygrometer BC25
Table of contents
Notes regarding the instructions .........................................2
Safety .....................................................................................2
Information about the device................................................4
Transport and storage...........................................................8
Operation ...............................................................................8
Maintenance and repair ......................................................10
Disposal ...............................................................................11
Notes regarding the instructions
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.
Note
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
instructions must be observed.
You can download the current version of the instructions and
the EUdeclaration of conformity via the following link:
BC25
https://hub.trotec.com/?id=39585
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.
• Do not use the device in potentially explosive rooms or
areas and do not install it there.
• Do not use the device in aggressive atmosphere.
• Do not immerse the device in water. Do not allow liquids to
penetrate into the device.
• 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 expose the device to strong vibrations.
• 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.
• Never charge batteries that cannot be recharged.
• Different types of batteries and new and used batteries
must not be used together.
• Insert the batteries into the battery compartment according
to the correct polarity.
• Remove discharged batteries from the device. Batteries
contain materials hazardous to the environment. Dispose
of the batteries according to the national regulations.
• Remove the batteries from the device if you will not be
using the device for a longer period of time.
• Never short-circuit the supply terminal in the battery
compartment!

EN 3
thermohygrometer BC25
• Do not swallow batteries! If a battery is swallowed, it can
cause severe internal burns within2hours! These burns
can lead to death!
• If you think batteries might have been swallowed or
otherwise entered the body, seek medical attention
immediately!
• Keep new and used batteries and an open battery
compartment away from children.
• Observe the storage and operating conditions (see
Technical data).
Intended use
Only use the device for measuring the temperature and humidity
level in indoor areas or, in the 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.
Foreseeable misuse
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 will be voided. Any unauthorised
modifications, alterations or structural changes to the device are
forbidden.
Personnel qualifications
People who use this device must:
• have read and understood the instructions, especially the
Safety chapter.
Residual risks
Warning of electrical voltage
There is a risk of a short-circuit due to liquids
penetrating the housing!
Do not immerse the device and the accessories in
water. Make sure that no water or other liquids can
enter the housing.
Warning of electrical voltage
Work on the electrical components must only be
carried out by an authorised specialist company!
Warning
Risk of suffocation!
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!
Caution
Keep a sufficient distance from heat sources.
Note
To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.
Note
Do not use abrasive cleaners or solvents to clean the
device.

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thermohygrometer BC25
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.
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.

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thermohygrometer BC25
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
(wet-bulb globe temperature index)
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 indication
16 Wet bulb indication
17 Dew point indication
18 Relative humidity indication
19 HI indication
(heat index)
20 Temperature indication

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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 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 potential
physical strain 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 Increasing 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.

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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.

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thermohygrometer BC25
Transport and storage
Note
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 the bag included in the scope of
delivery in order to protect the device 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
• the storage temperature complies with the values specified
in the Technical data
• Remove the battery from the device.
Operation
Inserting / Changing the batteries
Note
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 compartment cover.
3. Insert the battery (1 x CR2032 battery) into the battery
compartment with correct polarity.
4. Screw the lid 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 will be switched on and the device 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 9
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.
To do so, 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.

10 EN
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 the device off.
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.
Maintenance and repair
Cleaning
Clean the device with a soft, damp and lint-free cloth. Make
sure that no moisture enters the housing. Do not use any
sprays, solvents, alcohol-based cleaning agents or abrasive
cleaners, but only clean water to moisten the cloth.
Repair
Do not modify the device or install any spare parts. For repairs
or device testing, contact the manufacturer.
Battery change
A battery change is required when the battery status indication
flashes or the device can no longer be switched on (see chapter
Inserting the batteries).

EN 11
thermohygrometer BC25
Disposal
Always dispose of packing materials in an environmentally
friendly manner and in accordance with the applicable local
disposal regulations.
The icon with the crossed-out waste bin on waste
electrical or electronic equipment is taken from Directive
2012/19/EU. It states that this device must not be disposed of
with the household waste at the end of its life. You will find
collection points for free return of waste electrical and electronic
equipment in your vicinity. The addresses can be obtained from
your municipality or local administration. You can also find out
about other return options that apply for many EU countries on
the website https://hub.trotec.com/?id=45090. Otherwise,
please contact an official recycling centre for electronic and
electrical equipment authorised for your country.
The separate collection of waste electrical and electronic
equipment aims to enable the re-use, recycling and other forms
of recovery of waste equipment as well as to prevent negative
effects for the environment and human health caused by the
disposal of hazardous substances potentially contained in the
equipment.
In the European Union, batteries and accumulators must
not be treated as domestic waste, but must be disposed of
professionally in accordance with Directive 2006/66/EC of the
European Parliament and of the Council of 6September2006
on batteries and accumulators. Please dispose of batteries and
accumulators according to the relevant legal requirements.
Only for United Kingdom
According to Waste Electrical and Electronic Equipment
Regulations 2013 (SI2013/3113) (as amended) and the Waste
Batteries and Accumulators Regulations 2009 (SI2009/890) (as
amended), devices that are no longer usable must be collected
separately and disposed of in an environmentally friendly
manner.

Trotec GmbH
Grebbener Str. 7
D-52525 Heinsberg
[phone]
[phone]
[email protected]
www.trotec.com