Command/Property

Description

Autozero

Performs an autozero.

Data_Collection_Rate

Sets the rate [Hz] at which Chromeleon collects digital data from the detector. The rate can be set in the following range:

Corona, Corona plus: 2–60 Hz

Corona ultra/Corona ultra RS: 2–100 Hz

Corona Veo: 2–100 Hz

DemoFileName

Name of the file that is read in the Demo Mode.

GasState

Turns the gas flow on or off.

Caution:

Always make sure that the detector gas flow is on before starting the pump flow.

Stop the pump flow first before turning off the gas flow.

Nebulizer_TempCtrl

(Corona plus/ultra/ultra RS only) Enables or disables temperature control of the nebulizer.

Nebulizer_Temperature

(Corona plus/ultra/ultra RS only) Indicates the current nebulizer temperature.

Nebulizer_TemperatureNominal

(Corona plus/ultra/ultra RS only) Specifies the set point for the nebulizer temperature.

Note:

The Corona plus uses a fixed set point of 30° C.

Nebulizer_WaitForTempReady

(Corona plus/ultra/ultra RS only) When set to Yes, the Ready property also checks whether the nebulizer temperature has reached the set point and is stable. If No is selected, no check of the nebulizer temperature is performed.

PowerFunction

(Corona ultra RS and Corona Veo only) When selected, this option applies a power transformation to the data output of the detector. The Power Function can sometimes increase the usable “linear” response of the detector. Specify a value to adjust the signal data. The default setting of 1.0 provides a good universal setting for most applications and analytes. Values of <1 are useful in only limited applications (semivolatile analytes).

Ready

Ready indicates that the instrument is ready for operation, i.e., no Autozero is started, the temperature has been reached.

NotReady indicates that the instrument is not ready for operation (read-only).

In combination with the Nebulizer_WaitForTempReady property, the Ready property also evaluates whether the nebulizer temperature has reached the specified set point and is stable or not.

(Corona Veo only) In combination with the Evaporator_WaitForTempReady property, the Ready property also evaluates whether the evaporator temperature has reached the specified set point and is stable or not.

WasteLevel

(Corona ultra RS only) Reports the liquid level in the waste bottle. This property is only available if the Monitor Waste Level option is enabled on the Detector tab page in the Server Configuration.

If waste level monitoring is enabled, a warning is provided when the level is above 50%. When the level is above 100%, it is no longer possible to start a run on the Corona ultra RS. During a run, if the waste liquid level rises above 100%, the Corona ultra RS automatically diverts the flow and aborts the running sample or sequence.

Command/Property

Description

AcqOn/AcqOff

AcqOn starts data acquisition and concurrently turns on high voltage on the detector. AcqOff stops data acquisition and turns off high voltage.

DetectorFlowState

(Corona ultra RS and Corona Veo only) Specify whether the liquid flow to the nebulizer is On or Off.

FilterConstant

Defines the filter setting.

Available values:

Corona CAD/plus: None, Low, Medium, High.

Corona ultra: None, Low, Medium, High, Corona

Corona ultra RS: 0–7

Corona Veo: 0.1–10.0s

A filter value of 0 or None ensures that all peaks are visible.

A filter value of 7 (ultra RS) or High (CAD/plus/ultra) provides chromatograms that look "smooth", but very narrow or closely adjacent peaks may not be visible.

As a rule of thumb, select a filter setting that is not smaller than the width of the narrowest peak.

Caution:

In Corona ultra RS detectors, the "FilterConstant" parameter is set using a filter index, while in Corona Veo detectors, it is set using a time constant. When using the same PGM file on different Corona detector models, the parameter may have to be modified for the respective model type. Please check your PGM file to verify that the filter values used on your detector type are correct. The available values for filter index (Corona ultra RS) and time constant (Corona Veo) are listed in the tables below.

Corona ultra RS filter values:

Corona Veo filter values:

GainRange

(Applies to analog outputs only.) Sets the analog range of the detector. Enter the appropriate full scale range so that peaks of interest remain on scale. Smaller values correspond to higher gain settings, while larger values represent lower gain settings. The smaller the selected range, the larger is the representation of the detected peaks.

Offset

(Applies to analog outputs only.) Each signal can receive a channel offset. The entry is in percent, that is, a value of +10 means a signal increase by 10%, depending on the selected voltage range (Output Voltage).

If the voltage range (OutputVoltage) is 0 to +1V, the signal offset is 10% of 1V = 0.1V.

Retention

Reports the signal's retention time.

Signal

Reports the current signal value.