MSR-Electronic GmbH
::: Würdinger Str. 27 + 27A ::: 94060 Pocking
::: Germany
P E R F E C T S O L U T I O N S I N
G A S A L A R M
S Y S T E M S
w w w .
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Page 11
| Dec. 2015
Po ly Gar d ® 2 M SC 2 – Dat a Sh eet an d Us er M an u al
Specifications subject to change without notice
PolyGard® is a registered trademark of MSR-Electronic GmbH
FUNCTIONAL TEST (FOR INITIAL OPERATION AND MAINTENANCE)
The functional test should be carried out during each service, but at least once a year.
ZERO-POINT TEST WITH FRESH OUTDOOR AIR
Due to the employed optical measurement principle, there won’t be any deterioration caused by ageing or chemical
processes in the sensor. However, a zero offset may occur.
Using the Service Tool STL 06 you can read it out and document it in form of a measured value.
TRIP TEST WITH REFERENCE GAS
The sensor is gassed with reference gas CO
2
, concentration, 2-3 % vol, (for this you need a gas bottle with pressure
regulator and a calibration adapter).
In doing so, the set alarm thresholds are exceeded, and all output functions are activated. It is necessary to check if the
connected output functions are working correctly (e.g. the horn sounds, the fan switches on, devices shut down). By
pressing the push-button on the horn, the horn acknowledgment must be checked. After removal of the reference gas,
all outputs must automatically return to its initial position.
Other than the simple functional testing, it is also possible to perform a functional test by means of calibration. For
further information, please refer to the User Manual.
CALIBRATION
New Sensor Cartridges SC2 are always delivered factory-calibrated by MSR-E. This is documented by the calibration label
indicating date and calibration gas. A repeated calibration is not necessary during commissioning if the device is still in its
original packaging (air-tight protection by the red protective cap) and the calibration doesn’t date back more than 12
months for CO
2
sensors and 3 months for all other gases.
Due to high operational stability of the sensor, and the intrinsically safe design of the gas detector, the gas detector
doesn’t need an annual calibration.
After an operating period of 5 years, only the sensor cartridge must be recalibrated & adjusted by the manufacturer or
replaced. If this time has been exceeded, the device answers automatically with the green LED flashing. This replacement
of the sensor cartridge can be repeated without limitation, as long as there isn’t a malfunction (fault X4). The evaluation
unit must not be exchanged.
After exchange of the sensor, the LED shows the correct operation again (green).
