GREISINGER G 1910-02 User manual

Operating manual
G 1910-02
Compact CO2 monitor with alarm
EN

Table of contents
2 / 29 B-H90.0.01.DB2-1.1
Table of contents
1 About this documentation ................................................................................................................. 4
1.1 Foreword............................................................................................................................................... 4
1.2 Purpose of the document...................................................................................................................... 4
1.3 Legal notices......................................................................................................................................... 4
1.4 Correctness of content.......................................................................................................................... 4
1.5 Layout of this document........................................................................................................................ 4
1.6 Further information ............................................................................................................................... 5
2 Safety ................................................................................................................................................... 6
2.1 Explanation of safety symbols .............................................................................................................. 6
2.2 Foreseeable misuse ............................................................................................................................. 6
2.3 Safety instructions ................................................................................................................................ 7
2.4 Intended use ......................................................................................................................................... 7
2.5 Qualified personnel............................................................................................................................... 8
3 Description .......................................................................................................................................... 9
3.1 Scope of delivery .................................................................................................................................. 9
3.2 Functional description........................................................................................................................... 9
4 The product at a glance ................................................................................................................... 10
4.1 The G 1910-02.................................................................................................................................... 10
4.2 Display elements ................................................................................................................................ 10
4.3 Operating elements ............................................................................................................................ 10
4.4 Connections........................................................................................................................................ 11
5 Operation........................................................................................................................................... 12
5.1 Commissioning ................................................................................................................................... 12
5.1.1 Explanation ......................................................................................................................................... 12
5.2 Configuration ...................................................................................................................................... 12
5.2.1 Explanation ......................................................................................................................................... 12
5.2.2 Opening the configuration menu......................................................................................................... 12
5.2.3 Configuring parameters of the configuration menu............................................................................. 13
5.2.4 Call-up of the expanded settings menu .............................................................................................. 14
5.2.5 Configure parameters of the expanded settings menu....................................................................... 15
6 Bases for measurement ................................................................................................................... 17
6.1 NDIR CO2 sensor................................................................................................................................ 17
6.1.1 Explanation ......................................................................................................................................... 17
6.1.2 Design................................................................................................................................................. 17
7 Maintenance ...................................................................................................................................... 18
7.1 Operating and maintenance notices ................................................................................................... 18
7.2 Battery ................................................................................................................................................ 18
7.2.1 Charge status display ......................................................................................................................... 18
7.2.2 Charging the batteries ........................................................................................................................ 18
7.2.3 Rechargeable battery replacement..................................................................................................... 19
7.3 CO2 calibration.................................................................................................................................... 19
8 Error and system messages............................................................................................................ 23
9 Disposal............................................................................................................................................. 25

Table of contents
B-H90.0.01.DB2-1.1 3 / 29
10 Technical data................................................................................................................................... 26
11 Spare parts and accessories ........................................................................................................... 27
12 Service ............................................................................................................................................... 28
12.1 Manufacturer....................................................................................................................................... 28
12.2 Repairs processing ............................................................................................................................. 28
12.3 Sales offices ....................................................................................................................................... 28
12.4 Sales subsidiaries............................................................................................................................... 29

1 | About this documentation G 1910-02
4 / 29 B-H90.0.01.DB2-1.1
1 About this documentation
1.1 Foreword
Read this document carefully and familiarise yourself with the operation of the product
before you use it. Keep this document ready to hand and in the immediate vicinity of
the product so that it is available to the personnel/user for reference at all times in
case of doubt.
The product was developed according to the state of the art and fulfils the require-
ments of the applicable European and national Directives. All corresponding docu-
ments are available from the manufacturer.
Only technically qualified persons are permitted to carry out commissioning, operation,
maintenance and decommissioning. The qualified personnel must have carefully read
and understood the operating manual before beginning any work.
1.2 Purpose of the document
– This document describes the operation and maintenance of the product.
– Provides important information for working safely and efficiently with the product.
– In addition to the quick reference guide with all relevant legal and safety content in
hard copy, this document is a detailed reference option for the product.
1.3 Legal notices
The liability and warranty of the manufacturer for damages and consequential dam-
ages are voided with misuse, disregarding this operating manual, disregarding safety
notices, assignment of inadequately qualified technical personnel and arbitrary modi-
fications of the product.
Only carry out the maintenance and service tasks on this product that are described in
this documentation. In the process, adhere to the specified steps. For your own safety,
only use original spare parts and accessories of the manufacturer. We assume no li-
ability for the use of other products and resulting damage.
This document is entrusted to the recipient for personal use only. Any impermissible
transfer, duplication, translation into other languages or excerpts from this operating
manual are prohibited.
The manufacturer assumes no liability for print errors.
1.4 Correctness of content
The contents of this document were checked for corrected and are subject to a con-
tinuous correction and updating process. This does not rule out potential errors. In the
event that errors are discovered or in case of suggestions for improvement, please in-
form us immediately via the indicated contact information in order to help us make this
document even more user-friendly.
1.5 Layout of this document
Description
Each chapter is explained at the beginning in the description.

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Prerequisite
All mandatory prerequisites are then listed for each step.
Instruction
Tasks to be carried out by the personnel / user are represented as numbered instruc-
tions. Adhere to the sequence of the specified instructions.
Representation
Shows an illustrative instruction or a configuration of the product.
Formula
Some instructions include a formula for a general understanding of a configuration,
programming or a setting of the product.
Outcome of an action
Result, consequence or effect of an instruction.
Emphases
In order to simplify legibility and provide a clearer overview, various sections / informa-
tion are emphasised.
–1234 Display elements
–Mechanical controls
–Product functions
–Product labels
–Cross-reference [}p.4]
–Foot notes
1.6 Further information
Software version of the product:
– V1.1 or later

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6 / 29 B-H90.0.01.DB2-1.1
2 Safety
2.1 Explanation of safety symbols
DANGER
This symbol warns of imminent danger which can result in death, severe bodily injury,
or severe property damage in case of non-observance.
CAUTION
This symbol warns of potential dangers or harmful situations which can cause damage
to the device or to the environment in case of non-observance.
NOTE
This symbol indicates processes which can have a direct influence on operation or
can trigger an unforeseen reaction in case of non-observance.
2.2 Foreseeable misuse
The fault-free function and operational safety of the product can only be guaranteed if
generally applicable safety precautions and the device-specific safety instructions for
this document are observed.
If these notices are disregarded, personal injury or death, as well as property damage
can occur.
DANGER
Incorrect area of application!
In order to prevent erratic behaviour of the product, personal injury or property dam-
age, the product must be used exclusively as described in the chapter Description
[}p.9] in the operating manual.
– Do not use in safety / Emergency Stop devices!
– The product is not suitable for use in explosion-prone areas!
– The product must not be used for diagnostic or other medical purposes on pa-
tients!
– The product is not intended to come into direct contact with food!
– Not suitable for use with requirements on functional safety, e.g. SIL!
DANGER
Danger due to elevated CO2 concentration
The product is not suitable for use as personal protective equipment with elevated
CO2 levels. However, it can indicate an elevated CO2 value. The measured value ap-
pears in the display as a % or ppm value.

G 1910-02 Safety | 2
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G 1910-02 G 1910-20 CO2 concentration Effect
% ppm
20 Death within a few seconds
10 Loss of consciousness, death, dizzi-
ness, vomiting, headaches, reduced
blood flow to brain
4.0 IDLH - immediate danger to life and
health
3.0 Normal exhalation concentration, el-
evated breathing and pulse rate
1.0 10,000 Possible shortness of breath
0.5 5000 TWA – Maximum for working condi-
tions
0.1 .. 0.2 1000 ..
2000
Recommended maximum value in
public areas
0.04 400 Fresh air
Product is not permitted for the area
Expanded measuring range. The product can be used condi-
tionally
Area of application of the product with specified accuracy
The values are guideline values. Depending on the health condition and duration of
exposure, problems can also occur below the indicated concentrations under certain
circumstances.
2.3 Safety instructions
This product has been designed and tested according to the safety requirements for
electronic measuring devices.
CAUTION
Erratic behaviour!
On suspicion that the product can no longer be operated without danger, it must be
decommissioned and prevented from recommissioning with appropriate labelling. The
safety of the user can be impaired by the device if, for example, if it shows visible
damage, it no longer works as specified or if it was stored for an extended period of
time under unsuitable conditions.
– Visual inspection!
– In case of doubt, send the product to the manufacturer for repair or maintenance!
NOTE
This product does not belong in children's hands!
2.4 Intended use
The product is designed exclusively for measurements in ambient air and environ-
ments with slightly elevated CO2 concentrations in areas that are not harmful to the
health. It is designed to be carried on the body for mobile use. The user can be
warned optically and acoustically of elevated CO2 concentrations based on variable
alarm limits. Example applications for this are:

2 | Safety G 1910-02
8 / 29 B-H90.0.01.DB2-1.1
– Use as a monitor for recording of the mean value weighted over 8 hours (TWA) or
15 minutes (STEL).
– Monitoring of air quality.
2.5 Qualified personnel
For commissioning, operation and maintenance, the relevant personnel must have ad-
equate knowledge of the measuring process and use of the measurements, for which
purpose this document makes a valuable contribution. The instructions in this docu-
ment must be understood, observed and followed.
In order to ensure that no risks arise from the interpretation of the measurements in
the concrete application, the user must have additional technical knowledge, because
the user is liable in case of damage/danger due to misinterpretation as a result of in-
adequate technical knowledge.

G 1910-02 Description | 3
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3 Description
3.1 Scope of delivery
Please check to ensure the completeness of the product after opening the package.
You should find the following components:
– Quick reference guide
– Handheld measuring device, ready for operation, including rechargeable batteries
– Micro USB to USB type A connection cable
3.2 Functional description
The product offers precision, speed and reliability in a compact, ergonomic housing. It
is distinguished by an illuminated 3-line display. The product can be switched on,
switched off and configured and the measurements and parameters can be adjusted
and held with the operating elements. The product is equipped with an integrated op-
tical carbon dioxide sensor. In addition to display of the currently measured CO2 value,
the mean value weighted over 8 hours (TWA) or 15 minutes (STEL) can be output.
An integrated two-stage alarm also issues an optical signal and an acoustic signal as
a warning when the adjusted limits are exceeded.
– A pre-alarm issues a text warning or the backlight flashes with a brief horn when
the limit is exceeded depending on the setting.
– A pre-alarm issues a text warning or the backlight flashes rapidly with a continu-
ous horn when the limit is exceeded depending on the setting.

4 | The product at a glance G 1910-02
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4 The product at a glance
4.1 The G 1910-02
LCD Display
G 1910-02
Sensor openings Micro USB socket
4.2 Display elements
Display
Charge status display Evaluation of the charge status
Unit display Display of units or type of mode, min/max/hold
Main display Measurement of the current conductivity value or
value for min/max/hold
Auxiliary display Display of the mean value
Bar graph Visualisation of the CO2 value
4.3 Operating elements
On / Off button
Press briefly Switch on the product
Activate / deactivate lighting
Long press Switch off the product
Reject changes in a menu
Up / Down button
Press briefly Display of the min/max value
Change value of the selected parameter
Long press Reset the min/max value of the current measure-
ment
Both simultaneously Rotate display, overhead display

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Function key
Press briefly Freeze measurement
Return to measurement display
Call up next parameter
Long press, 2s Open menu, frozen measurement is displayed
Close menu, changes are saved
Long press, 2s Start menu configuration, (ONF appears in the dis-
play
Long press, 4s Start automatic calibration, (AL appears in the dis-
play
4.4 Connections
Micro USB socket Charging the batteries

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5 Operation
5.1 Commissioning
5.1.1 Explanation
Description The product is switched on with the On/Off button. It may be necessary to configure
the product after switching on. See Configuration [}p.12].
A self-test is conducted after switching on. The following increasing CO2 values 1000,
2000, 4000 and 8000 are shown in the display. TEST is shown in the secondary display.
If an alarm is active and is in one of these relevant areas, it is triggered.
If ---- appears in the display after the self-test, the sensor is not ready for measure-
ment.
If batteries are drained and the product is not used for an extended time, it can take up
to 30 seconds until the measurement starts. If no measurement is received by the
sensor within 30 seconds, the product issues an alarm.
Prerequisite – The rechargeable batteries have been charged via the micro USB socket.
Instruction – Press the On/Off button.
Outcome of an action Information about the configuration of the product appears in the display.
TEST Self-test An automatic self-test is carried out during system
start-up. The bar indicator for the threshold value is
displayed and the alarm is tested if it has been ac-
tivated.
POFF Automatic shut-
off
Automatic shut-off activated. The product is
switched off if no buttons have been pressed after
the adjusted time
– The product is now ready for measurement.
5.2 Configuration
5.2.1 Explanation
The following steps describe how to adapt the product for your purposes.
NOTE
There are various configuration parameters available depending on the product ver-
sion and configuration. They can differ depending on the product version and configur-
ation.
5.2.2 Opening the configuration menu
Description In order to configure the product, you must first open the Configuration menu. The
menu is opened as shown in the illustration.
Prerequisite
Instruction
1. Press the Function key for 2 seconds to open the Configuration menu.
2. (ONF appears in the display. Release the function key.
3. By briefly pressing the Function key, you can scroll through the parameters. Select
the parameter you would like to configure.

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4. When you have selected the desired parameter, change the parameter to the de-
sired value with the Up button and the Down button.
5. The changes are saved after running through the entire Configuration menu. STOR
appears in the display. The Configuration menu can be exited from any arbitrary
parameter by pressing and holding the Function key for 2 seconds. The changes
made up that point are saved.
Representation Call up menu Next parameter Change value Save changes Discard
changes
2s Press: Single
step
Hold: Rapid
change
2s 2s
Product is
switched off
Outcome of an action The Configuration menu is closed after the last parameter.
NOTE
If the product is switched off without saving the configuration, the last save value is re-
produced on the next start-up of the product.
5.2.3 Configuring parameters of the configuration menu
Description The following representation shows the available parameters and various configura-
tion options.
Prerequisite – The Configuration menu is open. See Opening the configuration menu [}p.12].
Instruction 1. Select the desired parameter you would like to configure.
2. Adjust the desired configuration in the selected parameter with the Up button and
Down button.
3. The available configuration options are listed for each parameter in the following
representation.
Outcome of an action The changed value is saved and the Configuration menu is closed. STOR appears in
the display. If necessary, the product is restarted automatically in order to adopt the
changed values.
NOTE
The configuration is closed if no button is pressed for 2 minutes. Any changes made
up to that point are not saved. C.END appears in the display.
Representation Parameter Values Meaning
Input
INP
%CO2 measurement in %
PPm CO2 measurement in ppm

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Alarms
AL.
OFF No active alarm
ON Alarm alerting via text display, acoustic signal and
flashing of the backlighting
BEEP Alarm alerting via text display and acoustic signal
L,TE Alarm alerting via text display and flashing of the
backlighting
AL.1 Depending on the setting of the parameter value INP
0.000 .. AL.2
0 .. AL2
Min. alarm limit in % or ppm; a pre-alarm is
triggered when the value is exceeded
AL.2 Depending on the setting of the parameter value INP
AL.1 .. 1.000
AL1 .. 10,000
Max. alarm limit in % or ppm; the main alarm is
triggered when the value is exceeded
Mean value
LCD.2
8 H Time weighted over 8 hours, mean value TWA
STEL Time weighted over 15 minutes, mean value STEL
OFF Mean value determination deactivated
Shut-off time
POFF
OFF No automatic shut-off
0:15 0:30 1:00 4:00
12:00
Automatic shut-off after a selected time in hours
and minutes, during which no buttons have been
pressed
Backlighting
L,TE
OFF Backlighting deactivated
0:15 0:30 1:00 4:00 Automatic shut-off of the backlighting after a selec-
ted time in minutes and seconds, during which no
buttons have been pressed
ON No automatic shut-off of the backlighting
Factory settings
IN,T
NO Use current configuration
YES Reset product to factory settings. IN,T DONE appears
in the display
5.2.4 Call-up of the expanded settings menu
Description In order to configure the product, you must first open the Expanded settings menu.
The menu is opened as shown in the illustration.
Prerequisite – The product is switched off.

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Instruction 1. Press and hold the Down button.
2. Press the On/Off button to switch on the product.
3. Release the On/Off button after 1 second and then the Down button in order to call
up the Expanded settings menu. The display shows the first parameter.
4. By briefly pressing the Function key, you can scroll through the parameters. Select
the parameter you would like to configure.
5. When you have selected the desired parameter, change the parameter to the de-
sired value with the Up key and the Down key.
6. In order to save the new parameter value, press and hold the Function key for
longer than 2 seconds.
Representation Call up menu
Hold 1s Release Release
Outcome of an action The Expanded settings menu is closed after the last parameter.
NOTE
If the Expanded settings menu is processed completely, the changes are saved auto-
matically. STOR appears in the display. However, it can be exited at any time by press-
ing the Function key for 2 seconds. The changes made up that point are also saved.
If the product is switched off without saving the configuration, the last save value is re-
produced on the next start-up of the product.
5.2.5 Configure parameters of the expanded settings menu
Description The following representation shows the available parameters and various configura-
tion options.
Prerequisite – The Expanded settings menu is called up. See Call-up of the expanded settings
menu [}p.14].
Instruction 1. Select the desired parameter you would like to configure.
2. Adjust the desired configuration in the selected parameter with the Up key and
Down key.
3. The available configuration options are listed for each parameter in the following
representation.
Representation Parameter Values Meaning
Calibration
[AL
OFF No calibration
2.PT 2-point calibration
1.PT 1-point calibration
KARD Basic sensor calibration
Only 0 ppm or 0.000 % can be selected as a set-
point value for the calibration, such as, for example
on nitrogen or 400 ppm or 0.040 % for calibration
on clean ambient air.

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Gradient compensation specification
[.SL
350 .. 10,000
0.035 .. 1.000
Setpoint value in ppm or in % for 1.PT or 2.PT calibra-
tion
0 / 400
0.000 / 0.040
Setpoint value in % or in ppm for KARD calibration
NOTE
The setpoint value of 400 ppm or depending on selection 0.040 % can be used for a
simple comparison in clean ambient air. Otherwise, use the expected value of the test
gas according to the analysis certificate or display value of the reference device.
Outcome of an action The changed value is saved and the Expanded settings menu is closed. STOR appears
in the display.
NOTE
If the product is switched off without saving the configuration, the last save value is re-
produced on the next start-up of the product.

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6 Bases for measurement
6.1 NDIR CO2 sensor
6.1.1 Explanation
The sensors are based on non-dispersive infrared sensor technology, NDIR. This is
the most widely used sensor technology for CO2 measurement.
The principle of the NDIR sensor is that an IR light source is focusses so that an op-
tical beam is created, which passes through the existing gas, including CO2. After an
optical band pass filter is passed, an IR sensor measures the level of IR light, wherein
the CO2 values in the optical path are displayed.
6.1.2 Design
1. Gas inlet
2. Gas outlet
3. IR lamp
4. Optical filter
5. Thermopile detector
IR detectors
A sensor module with single-channel detectors is used for the product.
IR radiation source A micro light bulb is used as an IR radiation source. It emits a broadband spectrum.
The sensor is long-lasting and maintenance-free. In order to be able to maintain the
specified accuracy for many years to come, regular calibration must be carried out de-
pending on the required accuracy.

7 | Maintenance G 1910-02
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7 Maintenance
7.1 Operating and maintenance notices
CAUTION
Damage to the sensor
A sensitive optical sensor is installed in the product. The sensor parameters can
change due to impact or falling. This can result in incorrect measurements.
– Protect the product from impact and falling!
– The measurements must be checked after the product falls or is jarred. If the val-
ues deviate, a basic sensor calibration must be carried out!
NOTE
The product must be handled with care and used in accordance with the technical
data. Do not throw or strike.
NOTE
If the product is stored at a temperature above 50 °C, or is not used for an extended
period of time, the batteries must be removed or recharged regularly. This prevents
leaks from the rechargeable batteries and increases the life of the rechargeable bat-
teries.
7.2 Battery
7.2.1 Charge status display
If the battery status display blinks, the batteries are depleted and must be recharged.
However, the device will still operate for a certain length of time.
If the BAT display text appears in the main display, the rechargeable battery voltage is
no longer adequate for operation of the product. Now the rechargeable battery is fully
depleted.
7.2.2 Charging the batteries
– Charge via Micro USB socket with the accompanying cable.
– Must be operated on a USB port or USB mains adapter with an output voltage of
4.75 V .. 5.25 V, which can deliver a current of 500 mA.
– The charging process is visualised in the charge status display.
– If the charging process has concluded BAT FVLL is shown in the display.
– Charging at room temperature in a range of 0 .. 40 °C is permitted.
– The device can heat up during charging. Max. up to 50 °C.
– Charging time approx. 8 hours.
– The charging time can take longer in ambient temperatures above 30 °C.
– The rechargeable battery temperature is monitored. At temperatures below 0 °C
and above 50 °C, the charging is interrupted.

G 1910-02 Maintenance | 7
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– In order to protect the batteries, the charging process is not started when the
charge cable is plugged in, if fully charged batteries are detected based on the
voltage monitor.
7.2.3 Rechargeable battery replacement
DANGER
Danger of explosion!
Using damaged or unsuitable rechargeable batteries can generate heat, which can
cause the rechargeable batteries to crack and possibly explode!
– Only use high-quality and suitable NiMH rechargeable batteries!
CAUTION
Damage!
If the rechargeable batteries have different charge levels, leaks and thus damage to
the product can occur.
– Use new, high-quality rechargeable batteries!
– Do not use different types of rechargeable batteries!
– Remove depleted rechargeable batteries and dispose of them at a suitable collec-
tion point!
NOTE
Read the following handling instructions before replacing rechargeable batteries and
follow them step by step. If disregarded, the product could be damaged or the protec-
tion from moisture could be diminished.
Description Proceed as follows to replace the rechargeable batteries.
Prerequisites – The product is switched off.
Instruction 1. Unscrews the Phillips screws and re-
move the cover.
2. Replace the two type AA rechargeable
batteries carefully. Ensure that the po-
larity is correct! It must be possible to
insert the rechargeable batteries in the
correct position without using force.
3. The O-ring must be undamaged, clean
and positioned at the intended depth.
In order to facilitate assembly and
avoid damage, a suitable grease can
be applied.
4. Fit the cover on evenly. The O-ring
must remain at the intended depth!
5. Tighten the Phillips screws.
Outcome of an action The product is now ready for use again.
7.3 CO2 calibration
Description In order to improve the accuracy, the carbon dioxide sensor can be calibrated. In order
to conduct a CO2 calibration, proceed as follows.

7 | Maintenance G 1910-02
20 / 29 B-H90.0.01.DB2-1.1
1-point calibration
Used for optimisation of the accuracy at the calibration point. The best possible accur-
acy can be achieved even with elevated CO2 concentrations
2-point calibration
Used for optimisation of the accuracy for extreme requirements over a wide measuring
range beginning from 0 ppm.
Basic sensor calibration
Used to reset the sensor in case of deviations beyond the normally expected devi-
ations. The values of all prior calibrations are reset and cannot be restored. A plausib-
ility check of the carbon dioxide concentrations does not take place. Depending on the
setting, calibration to 0 ppm CO2 test gas or fresh outside air can take place. Ensure
that the setting of the gradient compensation setpoint [.SL was entered correctly in the
Expanded settings menu.
If reliable values can no longer be displayed, we recommend performing basic sensor
calibration of the zero point at 0 ppm CO2 with nitrogen and a possibly necessary addi-
tional gradient compensation via 1-point calibration.
If incorrect values are displayed after the calibration, e.g. ERR.2 at 0 ppm CO2, the cal-
ibration must be repeated.
NOTE
Calibration can be carried out in clean ambient air or with test gases (optionally avail-
able gas extraction device recommended). 1-point calibration at any arbitrary point
above 350 ppm and 2-point calibration at 0 ppm and an arbitrary point above 350 ppm
are both possible.
For automatic calibration, open the Calibration menu.
Prerequisite – The product is switched on.
– Clean ambient air or test gas for gradient correction
– Test gas 0 ppm CO2 for zero point adjustment for 2-point calibration or basic
sensor calibration at 0 ppm
– Gas extraction device, if applicable
Instruction
1. If you would like to perform a calibration with test gas, connect the extraction
device to the product first.