Critical Environment Technologies GEM-II, Руководство по эксплуатации

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© 2014 All rights reserved. Data subject to change without notice. 39
Rev. E | 2014.10 GEM-II - Operation Manual
NOTE: In this photo, the jumper tab for both banks of jumpers is covering “J1” resting position.
7.6 adjusting alarm set Points
Equipment Required : Voltmeter 1 mV resolution if using Open Door calibration or setting Alarms,
Philips screw driver if using Open Door calibration or setting Alarms.
The GEM is configurable as single or dual channel detector and as such there are two ascending
gas alarm set points and two descending gas alarm set points. Almost all installations of the
GEM will use the factory default alarm set points. Default set points are as follows:
SENSOR LOW ALARM HIGH ALARM RANGE
Carbon Monoxide (CO) 25 ppm 100 ppm 200 ppm
Nitric Oxide (NO) 35 ppm 50 ppm 100 ppm
Nitrogen Dioxide (NO
2
) 0.7 ppm 1.5 ppm 10 ppm
Sulphur Dioxide (SO
2
) 1.0 ppm 5.0 ppm 20 ppm
Propane (C
3
H
8
), Methane
(CH
4
) or Hydrogen (H
2
)
10% LEL 20% LEL 50% LEL
Refrigerants 500 ppm 1,000 ppm 2,000 ppm
Temperature (
o
C) 30
o
C 40
o
C 60
o
C
Temperature (
o
F) 75
o
F 90
o
F 100
o
F
J7 - 9
J7 - 8
J7 - 7
J7 - 6
J7 - 5
J7 - 4
J7 - 3
J7 - 2
J7 - 1 (Resting)
J6 - 4
J6 - 3
J6 - 2
J6 - (Resting)
Upper bank jumpers set (J7). This bank
of jumpers allows specific functions
for internal and external sensors. The
target sensor is set using the lower
bank of jumpers.
Lower bank jumper set (J6). This
bank of jumpers allows set up and
configuration for both internal and
external sensors.