Commands and Tips for Third-Party Devices
Agilent 6890/6850 GCs: FID and FPD

The following commands and properties are available (please note that the display Filter level determines which commands and properties are displayed):

 

Property

Min.

Max.

Default

Description

AirFlow
(Detectors without EPC option)

0.0 ml/min

800.0 ml/min

² (Demo
mode:
400.0 ml/min)

Air gas flow. In this form, the property is available only for detectors without EPC option, see the Detector configuration tab page. The property is read-only.)

AirFlow
(Detectors with EPC option)

-

-

-

Properties related to the air gas flow. In this form, the property is available only for detectors with EPC option, see the Detector configuration tab page.

 AirFlow.Value

0.0 ml/min

800.0 ml/min

-

Current air gas flow (read-only).

 AirFlow.
Nominal

0.0 ml/min

800.0 ml/min

0.0 ml/min

Specifies the target air gas flow.

AirFlowCtrl
(Detectors with EPC option)

Off

On

² (Demo
mode: Off)

Turns the pneumatics on and off. In this form, the property is available only for detectors with EPC option, see the Detector configuration tab page.

Electrometer

Off

On

² (Demo
mode: Off)

Turns the detector electronics on and off.

Flame

Off

On

² (Demo
mode: Off)

Turns the flame on and off.

H2Flow
(Detectors without EPC option)

0.0 ml/min

100.0 ml/min

² (Demo
mode:
30 ml/min)

H2 gas flow. In this form, the property is available only for detectors without EPC option, see the Detector configuration tab page. The property is read-only.

H2Flow
(Detectors with EPC option)

-

-

-

Properties related to the H2 gas flow. In this form, the property is available only for detectors with EPC option, see the Detector configuration tab page.

 H2Flow.
Nominal

0,0 ml/min

100,0 ml/min in in increments of 1

² (Demo
mode: 30 ml/min)

Specifies the target H2 gas flow.

 H2Flow.Value

0.0 ml/min

100.0 ml/min

 

Current H2 gas flow.

H2FlowCtrl

Off

On

² (Demo
mode: Off)

Turns the pneumatics on and off. In this form, the property is available only for detectors with EPC option, see the Detector configuration tab page.)

LitOffset

0.00 pA

99.9 pA
in increments
of 1

² (Demo
mode: 0.0 pA)

If the detector output is below this level, the GC assumes that the flame is no longer burning and tries to reignite the flame.

MakeupGasType

Nitrogen, Hydrogen, Helium, Argon Methane, Unknown

² (Demo
mode: Nitrogen)

Makeup gas type. The property is available only for FID detectors with EPC option, see the Detector configuration tab page.

OxidizerGasType

Oxygen) Air,
Unknown

 

The property is available only for FPD detectors with EPC option, see the Detector configuration tab page.

 

 Note:

² When connecting, Chromeleon reads the value from the instrument and accepts it as default.

 

The Administrator Help section provides installation instructions for the 6890 and 6850 GCs; refer to Hardware Installation:

 Agilent 6890 GC: Installation

 Agilent 6850 GC: Installation