937B Controller Instruction Manual
pg. 69
•
Set the sensor combination
@
254SPC1!HH,MM,LL;FF
and @
254SPC2!HH,MM,LL;FF .
Here,
HH, MM
and
LL
are the
channels
(A1, A2, B1, B2, C1, C2, NA)
corresponding to the sensor assigned to High, Middle, and
Low range segments.
•
Query the gauge combination
@
254SPC1?;FF
and @
254SPC2?;FF .
•
Enable/disable the combined analog output
@254EPC1!Enable;FF
and @
254EPC1!Disable;FF .
8.3.3
Logarithmic/Linear Analog Output when the Sensor Power is Turned
OFF
The following table shows the expected logarithmic/linear analog output when the sensor power is turned
OFF or the combined analog output is disabled.
Analog Out (Volts)
Linear Out (volts)
Log-Linear Out
(Volts)
937B Power OFF
0
0
0
CP/Convectron channel OFF
incl. gauge OFF via RP
0
10
10
CP/Convectron below range
See Analog Out
Chart for CP
Sensor
0
0.2
CP/Convectron filament
failed
0
10
10
CP/Convectron cable
disconnected
0
>10
>10
CC OFF from front panel; rear
panel; via 'control
’
or
'protect'
11.5
10.5
10.5
HC OFF from front panel;
rear panel; via 'control',
'protect', disconnected cable,
or failed filament
10
10
10
CM (Absolute) below range
0
0
0.2
CM (Absolute) disconnected
cable
-11
0
0.2
CM above range
11
10
9.8
Table 8-9 Expected Logarithmic/Linear Analog Output Values