Commands and Tips for Third-Party Devices
Varian 3400 and Varian 3600 GCs: Detectors

The Varian 3400 and 3600 GC device drivers support the following commands and properties for the different detectors (please note that the display Filter level determines which commands and properties are displayed):

General Detector Properties

 

Property

Min

Max

Default

Description

Attenuation

1

8

1

Sets the attenuation of the detector signal

Baseline

-1315.80

1315.80

N/a

Indicates the actual baseline value.

TempCtrl

Off

On

On

Turns the detector heater on or off.

Temperature.Nominal

²

²

²

Sets the nominal temperature for the detector heater.

Temperature.UpperLimit

²

²

²

Sets the maximum temperature for the detector heater.

Temperature.Value

-99°C

420°C

50°C

Indicates the actual temperature of the detector heater (read-only).

Type

TCD, FID, TSD, or ECD

N/a

Indicates which type of detector is installed.

² The values depend on the device settings.

 

Command

Description

Autozero

Sets the current detector signal to 0.

 

Thermal Conductivity Detector (TCD)

 

Property

Min

Max

Default

Description

FilamentTemp

50°C

390°C

50°C

Sets the temperature of the TCD filament.

Polarity

Negative

Positive

Positive

Sets the polarity of the detector signal.

Range

5

500

500

Range for the output signal: 5, 50, 500.

 

Flame Ionization Detector (FID)

 

Property

Min

Max

Default

Description

Range

10^8

10^12

10^8

Range for the output signal.

 

Thermionic Specific Detector (TSD)

 

Property

Min

Max

Default

Description

BeadCurrent

2400

3800

2400

Indicates the current bead power [mA].

BeadPower
(TSD_BeadPower
for the Varian 3400 GC)

Off

On

On

Turns the TSD bead power on or off.

Range

10^8

10^12

10^8

Range for the output signal.

 

Electron Capture Detector (ECD)

 

Property

Min

Max

Default

Description

Range

1

10

1

Range for the output signal (allowed values: 1 and 10).

 

Also, refer to  Varian 3400 3600 GC Detectors: Different Names in Firmware and Chromeleon.

For an overview of the Varian 3400 GC, refer to Hardware Installation  Varian 3400 GC in the Administrator Help section.

For an overview of the Varian 3600 GC, refer to Hardware Installation  Varian 3600 GC in the Administrator Help section.