Envent Engineering Ltd. Page 27 Revision 2.4
Bypass Illuminates when the analyzer is in bypass mode.
LED A & B Red LEDs that can be used for different alarm configurations.
By default, these LEDs are left as spare.
Fault Illuminates when there is a fault in the Analyzer. Fault is used
for Board temperature, Sensor High/Low, Low H
2
S sensing
tape sensor, Pressure switch, etc.
LED 1 to 4 Green LEDs that can be used for different alarms or
conditions. By default, H alarm activates LED-1 and HH
alarm activates LED-2. (Refer to the LED Sticker on the
analyzer door on the inside (331S) or to the right side of the
blue chassis on of the XP enclosure).
Table 5. Display LED Description/Function
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