Display Shows "C" - Calibration Mode; Display Shows "S" - Sentry Connection; Diagnostic Leds; Error Messages - MSA SMC 5100-02-IT Operating Manual

7 Service
7.6.7 Display Shows "C" – Calibration Mode
Complete calibration and exit to operating mode.
7.6.8 Display Shows "S" – Sentry Connection
Check connections with Sentry Controller

7.6.9 Diagnostic LEDs

1 = 1 Hz Heartbeat normal, 2 Hz Panic Error
2 = Computation process
3 = 1 Hz Heartbeat normal
4 = HART or Sentry comms activity

7.6.10Error Messages

(Ver 3.05 and earlier)
34
LED Display LED Display
(Ver 3.07 & later)
NO SENSOR NO SENSR
F xx %LEL SNS FAIL
ERR:200 TEST TBL
F xx %LEL SNS Low
F xx %LEL BRG Low
SMC 5100-02-IT Gas Sensor
Description
No sensor detected
Too much power / too little power
Forced Value or Trouble
Detector output is too low
Bridge power is too low
US