RKI Instruments M2 Rig Monitor - Manual (Page 24)

19 M2 Rig Monitor Operator’s Manual
NOTE: You can select normally energized (N. EN) or normally de-energized (N. DE-
EN) alarm 1 and alarm 2 relay settings in Configuration Mode. The following
sections describe the standard factory setting for these relays which is
N. DE-EN.
The fail relay is factory set as N. EN and is not user-adjustable.
Alarm 1 Condition
Alarm 1 Condition Indications
When the gas reading reaches the alarm 1 setpoint, the Rig Monitor senses an alarm 1
condition. The Rig Monitor alerts you to an alarm 1 condition as follows:
• The A1 LED turns on.
• The gas reading alternates with the ALARM-1 message.
• The alarm 1 relay energizes and the strobe/horn activates.
Responding to an Alarm 1 Condition
1. Follow your established procedure for a low level H
2
S condition.
2. After the gas reading falls below the alarm 1 setpoint, press the ENTER button to reset
the alarm 1 circuit. Resetting the alarm 1 circuit turns off the A1 LED, resets the LCD,
de-energizes the alarm 1 relay, and turns off the strobe/horn.
NOTE: If the ENTER button is pressed while the M2 Rig Monitor is in an alarm 1
condition, the A1 LED will flash but all other indications will remain
unchanged.
You cannot de-energize the alarm 1 relay, and consequently the strobe/horn,
until the gas reading falls below the alarm 1 setpoint.
Fail • Disconnected or misconnected
detector wiring
• Display reading at -10% of full
scale or lower
• Defective components
• F LED is on
• FAIL message replaces
gas reading
NOTE: There is a 30 second
delay on the fail condition.
Low Power DC power source less than 18.5 volts. • F LED is on
• LowPower message and
actual voltage of
incoming DC power
NOTE: Under typical operating conditions, there may be no low power alarm. The 12 VDC
battery that is recommended for operation may fail before the power converter recognizes a low
power condition.
*
1
If the M2 Rig Monitor is in both an alarm 1 and an alarm 2 condition, both alarm LEDs
are on and the display alternates between the gas reading and the ALMS 1&2 message.
Table 3: Visual and Audible Alarm Indications
Condition Cause Visual Indication(s)