Operation - SBS H2 Installation, Operation & Maintenance Instructions Manual

8.0 Operation

Keep the detector on at all times. The solid green LED for 'POWER' on the main control indicates that
the detector is powered on.
When power is first turned on, a warm up period of 30 seconds will elapse before the unit will
function. This delay is to prevent false activation of the internal relays and alarm.
Should the concentration of hydrogen gas in the air surrounding the sensor reach 1% by volume, the
"1% Warning" yellow LED will light up on the main control of the unit. In addition, the 1% internal relay
will energize and can be used to activate a remote exhaust fan.
Should the hydrogen gas concentration reach 2% by volume, the "2% Alarm" red LED will light up,
the strobe will flash and an audible alarm will sound. In addition, the 2% internal relay will energize
and can be used to activate a building management/alarm system (via SCADA/Modbus).
Main Control Indicators
Condition
Power
Normal Operation
H Alarm (1% H )
2 2
H Warning (2% H )
2 2
Sensor/Cable Fault
Communication
with Sensor Lost
SBS-H2 Users Manual, Rev. 07-17-TNEMH2
Individual Sensor Indicators
Main Control
Indicators
Warning Alarm
(same flash rate as strobe)
Individual Sensor
Indicators
(sensor installed)
(blinking green)
Warning and
(plugged in, but not lit)
Page 12
Relay Audible
Closure Alarm
None None
Warning
Relay None
Energized
ON
Alarm Relay
Energized
None None
None None
July 2017
Strobe
None
None
ON
None
None