Commands and Tips for Third-Party Devices
Agilent 6890/6850 GCs: NPD (Nitrogen Phosphorous Detector)

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

AdjustOffset

Off) On) Abort)

² (Demo
mode: Off)

Adjusts the reference current until the desired output is reached as defined by the TargetOutput property.

AirFlow
(Detectors without EPC option)

0.0 ml/min

200.0 ml/min

² (Demo mode: 60.0 ml/min)

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

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.
Nominal

0.0 ml/min

200.0 ml/min
in increments of 1

² (Demo
mode: 60)

Specifies the target air gas flow.

 AirFlow.Value

0.0 ml/min

200.0 ml/min
in increments of 1

-

Current air gas flow (read-only).

AirFlowCtrl
(Detectors with EPC option)

Off

On

² (Demo
mode: On)

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.

BeadPower

Off

On

² (Demo
mode: On)

Turns the bead power on and off.

BeadVoltage

0.000 pA

4.095 pA
in 0.001 increments

² (Demo
mode: 2.500 pA)

The bead voltage can be set either via AdjustOffset or directly.

H2Flow
(Detectors without EPC option)

0.0 ml/min

30.0 ml/min

² (Demo
mode:
3.0 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

30.0 ml/min
in increments of 1

² (Demo
mode:
3.0 ml/min)

Specifies the target H2 gas flow.

 H2Flow.Value

0.0 ml/min

30.0 ml/min

-

Current H2 gas flow (read-only).

H2FlowCtrl
(Detectors with EPC option)

Off

On

² (Demo
mode: On)

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.

MakeupGasType
(Detectors with EPC option)

Nitrogen) Hydrogen, Helium, Argon Methane, Unknown

² (Demo
mode: Nitrogen)

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

OffsetEquilibration
Time

0.00 min

999.99 min
in 0.01 increments

² (Demo
mode: 5.00 min)

Specifies how long the detector output must be stable before the AdjustOffset procedure is finished.

PolVoltage

Off

On

² (Demo
mode: On)

Turns the detector electronics on and off.

RefCurrent

0.5 nA

50 nA
in 0.1 increments

² (Demo
mode: 1.5 nA)

Specifies the target detector output for the AdjustOffset procedure.

TargetOutput

20

200
in increments of 1

² (Demo
mode: 50)

Specifies the target detector output for the AdjustOffset procedure.

 

 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