User Manual - PolyXeta
®
2 Detector with HL Sensor
for Refrigerant Gases - May_2020
Page
12
PolyXeta
is a registered trademark of MSR
Made in Germany
GAPX2_Freon_E_2020_05_18
Phone: +49 8531 9004-0 Fax: +49 8531 9004-54
Specification subject to change without notice
MSR-Electronic GmbH, Buergermeister-Schoenbauer-Str. 13, D 94060 Pocking
www.msr-electronic.de
5
Commissioning
5.1
General Notes
Before delivery all PX2 gas detectors without exception run through a complete functional test with an initial
calibration of the sensors as documented in the enclosed calibration protocol.
However, transportation, storage, installation or other environmental conditions may lead to (mostly small)
deviations. It is therefore necessary that a person authorized by the manufacturer or alternatively an expert
puts the device properly into operation and performs a functional test.
5.2
Check / Change of Operating Parameters
The complete parameter set is stored in the PX2 gas detector in a fail-safe way and documented in the
enclosed calibration and test record as well as in the PolyXeta
®
2 configuration card. Necessary changes of
parameters for adaptation to the application can be done by qualified persons only in the display and if not
available by means of the service tool.
The parameter functions as well as the menu navigation and operation are described in the User Manuals of
“Service Tool and Display” for PolyXeta
®
2.
Relevant standard
parameters
Freon measuring range 2000 ppm
Freon measuring range 50 % LEL
Meas. range
20
–
2000 ppm
0
–
50 % LEL
Alarm threshold 1
700 ppm
10 % LEL
↑
↑
↑
↑
Alarm threshold 2
1000 ppm
20 % LEL
↑
Hysteresis
50 ppm
2 % LEL
Alarm 1
Not latching
Not latching
Alarm 2
Latching
Latching
Alarm relay 1
Assigned to 1 and 2, energized,
(Alarm OFF = Relay ON)
Assigned to 1 and 2, energized,
(Alarm OFF = Relay ON)
Table 5.1: Relevant Standard Parameters
5.3
Running-in Characteristics
After switching on or after an internal reset of the microcontroller, the PX2 detector always runs through a
start routine with defined status of the outputs. The start always begins with the diagnosis and warm-up
stages. When they have succeeded and finished, the measurement operation starts. External intervention is
not possible during this start routine.
