Trotec Westinghouse WLE625 Series User manual

TRT-BA-BG20-TC2014-32-002-EN
BG20
EN
OPERATING MANUAL
GAS DETECTOR

2 EN
gas detector BG20
Table of contents
Notes regarding the operating manual.................................2
Safety .....................................................................................2
Information about the device................................................4
Transport and storage...........................................................5
Operation ...............................................................................6
Maintenance and repair ........................................................8
Errors and faults....................................................................8
Disposal .................................................................................8
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.
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
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:
BG20
https://hub.trotec.com/?id=40283
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 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 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.
• Observe the storage and operating conditions as given in
the Technical data chapter.
• High concentrations of highly flammable gases can cause
explosions, fire, suffocation and other hazards. Please
obtain information on the gas you are working with and
take the appropriate precautions.

EN 3
gas detector BG20
• Calibrate the device in an environment that is free from
gases affecting the measurement.
Intended use
Only use the device to measure the carbon monoxide
concentration in the air. The measuring range is between 0ppm
and 1,000ppm with an accuracy of ±5% or ±10ppm.
The device is only intended for private, non-commercial use in
interior spaces.
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 hazardous areas or in any areas where
an explosive gas/air mixture is likely to prevail.
The device is not intended for professional/commercial use.
Do not use the device as monitoring device for your personal
safety. The device is no protective equipment.
Do not use the device for measurements in liquids and 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:
• be aware of the dangers that occur when working with
carbon monoxide measuring devices.
• have read and understood the operating manual, especially
the Safety chapter.
Residual risks
Danger
Even low concentrations of carbon monoxide (CO) are
life-threatening!
Carbon monoxide is toxic by inhalation! Make yourself
familiar with the signs of CO poisoning and learn to
recognize them.
Immediately remove persons who have inhaled carbon
monoxide to fresh air. Immediately seek medical help!
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 of explosive substances
There is a danger of explosion due to sparking.
Switch on the measuring device in an atmosphere that
is free from combustible gas. The device calibrates
itself automatically after switch-on. If combustible
gases are already present in the environment, any
further measuring results can be distorted and
combustible gases may remain undetected.
Warning
High concentrations of combustible gases cause a risk
of explosion, fire and suffocation.
Make yourself familiar with the safety data sheet
regarding the characteristics of the gas to be detected
and take the necessary precautions.
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.

4 EN
gas detector BG20
Examples for carbon monoxide concentration in the air
Examples for carbon monoxide concentrations and their effects:
0 to 1ppm Normal background levels
9 ppm Max. permissible concentration for interior spaces
35 ppm Max. average amount to which one may be
exposed over a period of 8 hours. *
100 ppm Exposure limit, persons ought to leave enclosed
spaces. *
150 ppm Slight headache after 1.5 hours
200 ppm Mild headache, fatigue, nausea and dizziness
400 ppm Frontal headache, life-threatening after 3 hours
800 ppm Dizziness, nausea, convulsions, death within 2 to
3 hours
1600 ppm Nausea within 20 minutes, death within 1 hour
3200 ppm Headache, dizziness and nausea within 5 to 10
minutes. Death within 25 to 30 minutes.
12800 ppm Death within 1 to 3 minutes
* according to OSHA = Occupational Safety & Health
Association
Information about the device
Device description
The carbon monoxide measuring deviceBG20 serves the
purpose of measuring the concentration (ppm) of carbon
monoxide(CO) in the air by means of an integrated sensor.
The device is designed for indoor use. The device is equipped
with an automatic switch-off and memory function.
In order to protect it from impact, scratching etc., the device
comes equipped with a protective cover.
Device depiction
7
6
5
3
4
1
2
No. Designation
1 Sensor
2 Protective cover
3SEL button
4 Indicator LED
5 Power button
6MODEbutton
7 Display

EN 5
gas detector BG20
Display
8910 11
12
13
14
15
16
17
No. Designation
8 MUTE indication
9MAX indication
10 Time indication
11 REC indication
12 Memory space indication
13 MEM indication
14 Battery indication
15 Indication of the unit ppm
16 Measurement value indication
17 CO indication
Technical data
Parameter Value
Model BG20
Weight 180g
Dimensions (lengthx
widthx height)
160 x 56 x 40mm
Measuring range 0 ppm to 1000 ppm
Accuracy ±10ppm or ±5%(depending on
which value is larger)
Measuring range
resolution
1 ppm
Sensor type Stabilised electrochemical gas-
specific (CO)
Sensor life (typically) 5 years
Memory For 10 measured values
Warm-up period < 20seconds
Power supply 1 x 9V battery
Battery life approx. 50 hours for an alkaline cell
Operating temperature 0°C to 50°C (32°F to 122°F)
Storage temperature -30°C to 60°C (-22°F to 140°F)
Operating humidity 0%RH to 99%RH (non-condensing)
Scope of delivery
• 1x Device BG20
• 1 x 9V battery
• 1x Bag/ holster
• 1 x Quick guide
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 is the same as the range given in
the Technical data chapter.
• Remove the battery from the device.

6 EN
gas detector BG20
Operation
Inserting the battery
• Insert the supplied battery before first use.
Note
Make sure that the surface of the device is dry and the
device is switched off.
1. Remove the device from the protective rubber cover(2).
ðThe protective rubber cover is fitted tightly. Push the
protective cover above the display off the housing and
remove it towards the rear.
2
2. Loosen the screw at the cover of the battery
compartment(18).
18
19
3. Use the battery clip(19) to connect the battery with correct
polarity.
4. Screw the cover of the battery compartment (18) back in.
5. Pull the protective rubber cover back over the device.
Attaching the warning sign
Prior to initial start-up, check whether the warning sign at the
rear of the device is in your local language, if not, paste the
proper one over it. The warning sign is supplied along with the
device in several languages. Please proceed as follows to attach
the warning sign to the rear of the device:
1. Remove the label in your local language from the supplied
film.
2. Affix the label in the intended position at the rear of the
device.
Switch-on
Note
The device calibrates after each switch-on taking the
CO concentration in the environment as basis. For
reasons of safety however, regardless of the actual CO
concentration in the environment upon switch-on, the
device accepts no more than 10 ppm as upper limit!
Example: Should the background concentration of CO
amount to 30ppm, the device will not use 30ppm as
reference value, and hence zero point, but instead
maximally 10ppm! The set alarm threshold of 30ppm
(see also 'Carrying out a measurement') would
therefore be activated at an actual CO value of 40ppm
(display: 30ppm!).
Always make sure to switch the device on in CO-free
surroundings, e.g. in fresh air, for otherwise the
displayed CO contents of the subsequent
measurements will be incorrect!
1. Go to a place with a low CO concentration (e.g. fresh air).
2. Press the on/off switch(5).
ðThe indicator LED(4) will briefly flash red and then be
illuminated in green. The warm-up phase of the device
incl. self-test is started.
3. Wait until the self-test is completed.
ðThe device displays(7) a countdown from11 to0.
ðAn acoustic signal indicates, that the self-test is
completed.
ðThe device is ready for operation.

EN 7
gas detector BG20
Carrying out a measurement
Info
Please 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. Direct the device towards the supposed CO source.
ðThe measured value will be displayed in real time.
ðIf the measured value amounts to more than 30ppm, a
repetitive acoustic warning signal will be emitted. The
higher the CO content, the higher the repetition
frequency. The LED(4) is illuminated in red.
ðIf the measured value amounts to more than 200ppm,
a constant acoustic warning signal will be emitted. The
LED(4) is illuminated in red.
Displaying the maximum value
The device can display the maximum value determined since
the beginning of the measurement. To do so, proceed as
follows:
1. Press the mode button(6) once.
ðThe indications MAX(9) and REC(11) appear on the
display.
ðThe highest value measured appears in the
measurement value display.
Calling up the measured value memory
The device comes equipped with a measured value memory, in
which up to 10measured values can be stored. Saved
measured values are preserved even after switch-off. To call up
saved measured values, please proceed as follows:
1. Press the mode button(6) twice.
ðThe indications MEM(13) and memory space(12)
appear on the display.
2. Repeatedly press the SEL button(3) until the storage
location with the desired number is displayed.
Measured value storage
Up to 10 measured values can be stored. In order to save one or
several measured values, please proceed as follows:
1. Press the mode button(6) three times.
ðThe indications REC(11) and memory space(12) appear
on the display.
ðThe value 0 or else the storage location displayed when
last calling up the measured value memory will appear
in the memory space(12) display.
2. Press the SEL button(3) to save the current measured
value.
Info
The measured value memory is deleted when you
perform a zero point reset (see Resetting the zero
point).
Calling up the alarm threshold
The value for the alarm threshold is stipulated, can however be
called up at any time:
1. Press the mode button(6) four times.
ðThe value 30ppm is displayed in the measurement
value display(16).
Resetting the zero point
By means of resetting the zero point the prevailing CO
concentration and hence the current measured value is defined
as new reference value (see also Switch-on). Therefore,
resetting the zero point should only be effected in the fresh air,
thus in surroundings with the lowest possible CO concentration!
To do so, proceed as follows:
1. Go to a place with a low CO concentration (e.g. fresh air).
2. Press the mode button(6) four times.
ðThe alarm threshold (30ppm) is displayed in the
measurement value display(16).
3. Press and hold the SEL button(3) for approx.8 seconds
until0 appears in the measurement value display.
ðThe digit0 flashes six times.
ðThen the device returns to the measuring mode.
ðThe saved measured values are deleted (see Retrieving
measured values).
Show measuring time
The device saves the measuring time after switch-on. Please
proceed as follows to retrieve the measurement time:
1. Press the mode button(6) five times.
ðThe time indication(10) appears on the display.
ðThe measuring time is indicated in the measured value
display(16) in the format hours:minutes.
Disabling the acoustic warning signal
1. Press the mode button(6) six times until either on or off is
displayed.
2. Press the SEL button(3) to select the desired setting.
ðWhen on, the acoustic warning signal is enabled.
ðWhen off, the acoustic warning signal is disabled. The
MUTE indication(8) appears on the display.
Switching the display illumination on or off
Ex works the display illumination is switched off.
1. Press the SEL button(3) for approx.2seconds, whilst the
device is in normal measuring mode.
ðThe display's background illumination is switched on or
off.

8 EN
gas detector BG20
Switch-off
The device comes equipped with an automatic switch-off
function and switches off automatically after15minutes of
inactivity.
1. Press the Power button(5) to switch the device off.
Maintenance and repair
Battery change
A battery change is required when a battery indication(14)
lights up on the display(7) or the device can no longer be
switched on. See chapter Operation.
Sensor
The sensor life amounts to approx.5years. During this time, we
recommend checking/calibrating the sensor annually.
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.
Errors and faults
The device has been checked for proper functioning several
times during production. If malfunctions occur nonetheless,
check the device according to the following list.
For repairs or device testing, contact the manufacturer.
Fault Cause Remedy
The device can no
longer be switched
on.
The battery is dead. Insert a new battery
(see chapter
Operation).
Display segments
are only faintly
visible or flicker.
The battery voltage
is too low.
Disposal
The icon with the crossed-out waste bin on waste
electrical or electronic equipment stipulates that this equipment
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. For further return options provided by us please
refer to our website https://de.trotec.com/shop/.
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.

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