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

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

Detector

6890:
Front, Back, MSD, AED, Unknown

6850:
Front, MSD, AED, Unknown

6890:
Front for the front detector

6850: Front

Detector to which the column is connected.

Diameter

0.0 (Unknown)
µm

1000.00  µm
in 0.01 increments

250.00

Specifies the inner diameter of the column.

FilmThickness

0.0 (Unknown)
ìm

1000.00 µm
in 0.01 increments

10.00 µm

Specifies the film thickness of the column.

Flow

-

-

-

Properties related to the flow; see  PGM File - Entering Pressure or Flow.

 Flow.Nominal

0.0 ml/min

1000.0 ml/min in increments of 1

Emulation of the ramp

Specifies the target flow value.

 Flow.Value

0.0 ml/min

1000.0 ml/min

-

Current flow value (read-only).

FlowMode

Pressure-Ctrl

FlowCtrl

PressureCtrl

Defines the pneumatics mode for the pressure or flow profile for the column.

Inlet

6890:
Front, Back, Aux3, Aux 4, Aux 5, Unknown

6850:
Front, Aux3, Aux 4, Aux 5, Unknown

6890:
Front for the front detector,
Back for the back detector

6850: Front

Inlet to which the detector is connected.

Length

0.0 (Unknown)
mm

1000,00 mm
in 0.01 increments

30.00 mm

Specifies the column length.

OutletPressure

0.0 bar

10.0 bar
in increments
of 1

² (Demo
mode: 1.0 bar)

Specifies the pressure at the column end if the column is neither in the vacuum nor under atmospheric pressure, e.g., if the column is directly connected to an ECD.

OutletPressure
Correction

Off

On

² (Demo
mode: Off)

Set to On if the column end is neither in the vacuum nor under atmospheric pressure. Specify the pressure at the column end as OutletPressure.

Pressure

-

-

-

Properties related to the pressure.

 Pressure.
Nominal

0.0 bar

10.0 bar in increments of 1

Emulation of the ramp.

Specifies the target pressure value.

 Pressure.Value

0.0 bar

10.0 bar

-

Measured pressure value (read-only).

VacuumCorrection

Off

On

² (Demo
mode: Off)

Set to On if the column is connected to the vacuum, i.e., if the column is directly connected to a mass spectrometer.

Velocity

-

-

-

Properties related to the average linear gas velocity.

 Velocity.
Nominal

0 cm/s

1000 cm/s in increments of 1

-

Specifies the desired average target gas velocity. .

 Velocity.Value

0 cm/s

1000 cm/s

-

Average linear gas velocity (read-only).

 

 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