B5C Operation And Maintenance Manual
85950-301-000 RA
Aug. 05, 2016
13
Display
Mode:
Display Instant: displays instantaneous gas concentration
Display Average:
o
Displays STEL (15min average reading)
o
Displays TWA (8 hour average reading)
o
Displays daily peak
Display Alarm: displays alarm 1-8 status
Display Relay: displays relay 1-3 status
Display Buzzer: displays buzzer 1-3 status
Display A-Out mA: displays current 4-20mA output
Display A-Out VDC: displays current VDC output
Display Clock: displays real time clock (Default is no clock display)
If there is nothing to display, the unit will display “Running…”
Auto Zero:
When AutoZero is set to ON, the unit will gather the lowest reading in 7-
day period and set the unit into Zeroing Calibration mode so that the lowest
reading goes to zero. When AutoZero is set to OFF, the unit will not adjust
its own zero and work off the last manual or factory calibration.
Default value is OFF.
NOTE: AutoZero works best in situations where the building will purge
at night (or over a weekend) to a zero concentration of target gas.
Key
Beeper:
ON: Beeping when keypad is touched
OFF: No beeping when keypad is touched
Restore
Default:
Note: Don’t do this if you don’t have calibration gas and precision
reference instrumentation to calibrate the unit.
To load defaults to factory settings, to restore the unit to correct operation.
The settings below will be restored to default values:
-Password, -Baud rate, -Scroll rate, -Backlight, -Display mode, -Key beeper,
-LCD contrast,
-Gas type on the Sensor Board, -
Alarm settings, -
Relay/Buzzer settings, and 4-20mA/1-5VDC settings.
Zero and span calibrations are needed.
ADJ Clock:
Adjust real time clock.
