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MSR ELECTRONIC PolyGard 2 MC2 - Mounting of Sensors

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User Manual PolyGard
®
2 Sensors 2023-11 Page 12 | 40
Freon Group
MSR Code
Calibration Gas
Relative Gas Density (Air= 1)
FR % LFL
S2020
Respective Gas
> 1.15
FR02
S2061
R23
> 1.15
FR03
S2063
R1234yf
> 1.15
FR04
S2064
R123
> 1.15
FR06
S2070
R22
> 1.15
FR07
S2077
R134a
> 1.15
FR08
S2080
R407c
> 1.15
Table 3: Freon Gases
Consider ventilation conditions! Do not mount the Sensor next to the air outlets, suction holes
etc.
Mount the Sensor at a location with minimum vibration and minimum variation in temperature
(avoid direct sunlight).
Avoid locations where external influences (e.g. water, lubricants, oils, etc.) may lead to me-
chanical damage.
Provide adequate space around the Sensor for maintenance and calibration work.
3.2 Mounting of Sensors
The Sensors are supplied in a separate package and should be installed on the housing only during
commissioning to protect it against dirt and damage.
Check gas type, range and calibration date of the Sensor.
Define installation place on the housing and break out knockouts.
Hand-tighten the Sensor with M25 hexagon lock nut.

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