937B Controller Instruction Manual
pg. 13
2.3 Controller Display
2.3.1
Display Message
X.X0E
ee
Normal pressure for the Pirani, CP/Convectron, CC, and HC
X.XXXE
e
Normal pressure for the Baratron
OVER
The pressure is over upper limit (for CC and HC when p > 1x10
-2
Torr)
ATM
Atmospheric pressure for the Pirani sensor
>1.100E
e
CM pressure is over 10% of the full scale
LO<E-11
The CC pressure is below its lower limit, or no CC sensor is connected
LO<E-10
The HC pressure is below its lower limit
LO<E-04
The Pirani pressure is below its lower limit
LO<E-03
The CP pressure is below its lower limit
OFF
Power is OFF to HC/CC/CP/PR sensor.
WAIT
CC and HC startup delay
Low EMIS
The HC OFF due to low emission current
CTRL OFF
The HC or CC are turned OFF by the control channel or sensor
PROT OFF
The HC or CC are in a protected state
RP OFF
The sensor power is turned OFF remotely
REDETECT
Detecting the sensor type for PR/CP
_ _ _ _
No Pirani/CP/HC sensor is detected on the inserted Pirani/CP board
NOBOARD
No board is detected in the slot, display only last 5 secs
N2, AR, He
Gas type
U
User calibration
SPn
Activated relay channel (n=1 to 12)
_ _
A relay is enabled, but not activated.
Ctrl
The CC/HC is controlled by another gauge (PR/CP)
AZ
PR/CP/BR may be auto-zeroed by its control sensor
F1, F2
Active filament
DG
The HC is degassing
An, Bn, Cn
The channel where the control sensor is installed (n=1, 2)