Kurt J. Lesker 979 Series, Operation And Maintenance Manual

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30 Series 979 ATV Transducer
Transducer Temperature – TEM1, TEM2
The TEM1 command returns the MicroPirani on-chip sensor temperature in
o
C. The TEM2 command returns the Hot Cathode on-chip sensor temperature
in
o
C. If the temperature exceeds 70
o
C, the ambient temperature may be too
high or the filament power is too high (nominal temperature rise is 30
o
C above
ambient).
Query: @001TEM?;FF
Query Response: @001ACK2.10E+1;FF
Pressure Measurement and Degas Commands
Filament Power – FP
CAUTION: Never turn on filament power when system pressure is
above 5x10
-2
Torr! Sensor damage will result!
The FP command turns the filament either ON or OFF. To select between the
sensor’s two filaments, see
Active Filament – AF ( Set Up Commands
section). To query the ON/OFF status of the filament, use the Filament
Status – FS command, or the Transducer Status – T command ( Status
Commands section). NOTE: This command works only when the control set
point is disabled (see Enable Set Point – ENC in the Set Point Commands
section).
Values: ON, OFF (default: OFF)
Command: @001FP!ON;FF
Command Response: @001ACKON;FF
Degas Power – DG
Read the Degassing the Sensor section of this manual before
using the DG command.
The DG command turns degas ON or OFF, or indicates if the Hot Cathode is
in degas mode. Degas turns off automatically after 30 minutes, but can be
turned off sooner. Pressure must be below 1x10
-5
Torr for the DG command to
work.
Values: ON, OFF (default: OFF)
Query: @001DG?;FF
Query Response: @001ACKOFF;FF
Command: @001DG!ON;FF
Command Response: @001ACKON;FF