MSR ELECTRONIC PolyGard 2 MC2 - Run-In Time

User Manual PolyGard
®
2 Sensors 2023-11 Page 16 | 40
6.1 Run-in Time
Caution:
Prior to calibration, the sensors must be supplied with power voltage without interruption
for run-in and stabilisation. The run-in time depends on the sensor element and is shown
in the following tables.
A: Catalytic Sensor Element (Pellistor)
for Combustible Gases
Run-in time
calibration (h)
Warm-up
time (s)
Flow rate
1
(ml/min)
Gas application
time (s)
All Pellistor sensors
24
300
150
120
Table 4: Calibration Pellistor Sensor Element
B: Electrochemical Sensor
Element
for Toxic Gases and Oxygen
Formula
Calibration with
surrogate gas
(ratio surrogate
gas : gas)
Run-in time
calibration (h)
Warm-up
time (s)
Flow rate
(ml/min)
Gas application
time
2
(s)
Ammonia
NH
3
-
24
300
500
180
Chlorine
Cl
2
NO
2
1:1 CL
2
24
30
500
180
Hydrogen chloride
HCl
H
2
S 20:31 HCl
24
30
500
120
Hydrogen cyanide
HCN
H
2
S 15:25 HCN
24
30
500
120
Ethylene
C
2
H
4
24
30
500
180
Ethylene oxide
ETO
-
24
30
500
180
Formaldehyde
CH
2
O
CO 7:1 CH
2
O
24
30
500
120
Carbon monoxide
CO
-
24
10
500
120
Ozone
O
3
NO
2
1:1 O
3
24
30
500
180
Oxygen
O
2
-
24
10
500
180
Sulphur dioxide
SO
2
-
24
30
500
120
Hydrogen sulphide
H
2
S
-
24
30
500
120
Nitrogen dioxide
NO
2
-
24
60
500
180
Nitrogen monoxide
NO
-
24
60
500
120
Hydrogen
H
2
-
24
30
500
180
VOC
VOC
-
24
30
500
180
Table 5: Calibration Electrochemical Sensor Element
C: Semiconductor
Sensor Element
Stabilisation time until
specification (min)
Run-in time
calibration
3
(h)
Warm-up
time (s)
Flow rate
1
(ml/min)
Gas application
time (s)
All Freon gases
60
24
300
150
180
NH
3
/ C
2
H
4
24
300
150
Max. 90
Table 6: Calibration Semiconductor Sensor Element
D: Infrared-
Sensor Element
Run-in time
calibration (h)
Warm-up
time (s)
Flow rate
1
(ml/min)
Gas application
time
2
(s)
Methane, propane, carbon dioxide, R32 (Premium sensor)
1
30
500
180
Methane, propane, carbon dioxide
1
30
150
180
Table 7: Calibration Infrared Sensor Element
1
Stainless steel housing option requires a flow rate of 500 ml/min.
2
Stainless steel housing option requires longer gas application times.
3
A run-in time of 168 h is recommended for initial commissioning.