MSR ELECTRONIC PolyGard 2 MC2 - E: MPS-Sensor Element

User Manual PolyGard
®
2 Sensors 2023-11 Page 35 | 40
E: MPS™-Sensor Element
SENSOR ELEMENT
Gas type
See datasheet DB_MC2/SC2_MPS
Measuring range
0–100 % LEL
Measuring principle
MPS™
Resolution
0.1 % LEL
Accuracy
± 2 % LEL
Repeatability
± 2 % of signal
Drift
No drift
Temperature range
-40 °C to 70 °C (-40 °F to 158 °F)
Humidity range
0–100 % RH non-condensing
Pressure range
80–120 kPa
Storage temperature range
1
-40 °C to 75 °C (-40 °F to 167 °F)
Storage time
Ca. 6 months
Life time
15+ years
Calibration interval
15 years
Poisoning
Poisoning resistant
Gas type
Ordering No.
Plastic housing
Stainless steel housing (SC2)
Relative gas density
2
t
90
time
Reaction time
t
90
time
Reaction time
SC2-/
MC2-X-
≤ sec.
≤ sec.
≤ sec.
≤ sec.
Air = 1
R32
M200-B
15
10
60
15
1,82
R1234ze
M205-B
20
10
100
30
4,00
CH
4
M400-A
20
10
40
15
0,56
C
2
H
2
3
M405-A
20
10
60
15
0,90
H
2
M440-A
15
5
20
10
0,07
C
3
H
8
M480-A
20
10
70
20
1,55
1
A deviating storage temperature can have a negative effect on sensitivity and service life.
2
The recommended mounting height depends on the relative gas density of the type of gas to be monitored. Depend-
ing on the relative gas density (d), the following recommendation therefore applies:
d ≤ 0.85: Mounting 0.3–0.5 m below the ceiling
0.85 < d < 1.15: Mounting at 1.2–1.8 m height
d ≥ 1.15: Mounting 0.3–0.5 m above the floor
3
Due to the high amplification, the lowest reliable detection limit for Acetylene is 10 % LEL.