ENMET GSM-60, Руководство по эксплуатации

Страница: 12 / 39

GSM-60 ENMET
Manual Revision Date – June 15, 2017 P a g e | 11
Manual Part No. – 80003-600 Rev. 1 – December 15, 2016
4.0 Operation
4.1 Normal Operation Condition
With the GSM-60 installed as described in Section 3 , and in clean air, the POWER green LED is on, the display is lit and the
information on the display is as shown in Figure 4 Display , for the sensor(s) installed in the GSM-60 . The red alarm and fault
LEDs are not lit.
Example of display with CO (ch 1), H
2
S (ch 2), Oxygen (ch 3) and CO
2
(ch 4) options installed
Figure 4: GSM-60 Operational Display
4.2 Alarm Set Points
There are two alarm set points for each installed channel of the GSM-60 . The factory settings of these alarm set points are shown
in Table 3 .
Table 3: Typical Factory Alarm Set Points
Typical Channel # Gas Alarm 1, Flashing LED Alarm 2, Steady LED
1 Carbon Monoxide 10 ppm 20 ppm
2 Hydrogen Sulfide 10 ppm 20 ppm
3 Oxygen Deficiency 19.5 % by volume 23.5 % by volume
4 Carbon Dioxide 500 ppm 1000 ppm
4 Hydrocarbon 5 ppm 10 ppm
The alarm set points can be changed within limits; see the maintenance section of this manual for the procedure.

If the CO concentration increases above that of the alarm set point, the associated red LED is lit, the associated relay
changes state, and the audio alarm is activated.

If the dew point increases above that of the alarm set point, the associated red LED is lit, the associated relay changes state,
and the audio alarm is activated.

If the oxygen content of the sample air decreases below the deficiency alarm set point, the associated red LED is lit, the
associated relay changes state, and the audio alarm is activated.

If the oxygen content of the sample air exceeds that of the abundance alarm set point, the associated red LED is lit, the
audio alarm is activated, and both the oxygen alarm relay and the oxygen high alarm relay change state.

The HC sensor can only detect and alarm to hydrocarbons with an Ionization Potential of less than 10.6 eV. See Appendix
B .

The HC sensor is broad range in nature and is unable to differentiate between different hydrocarbons.

The Alarm 1 differential value is the delay of the GSM-60 staying in alarm condition until after the measured reading has
returned past the alarm point by the differential value. Example : If the alarm set point is
Λ
10 and the differential is 2, the
GSM-60 will go into alarm at 10 and stay in alarm until the reading has dropped below 8.
CO 0 O2 20.9
H2S 0 CO2 300
CO
PPM
O
2
%
H2S
PPM
CO2
PPM