Electron Capture Detector Technique Definition

Technique Schema Version 0.34

Technique definition for Electron Capture Point Detector data

Table of Contents

Experiment Data Role Blueprints (1)

  • Data Source
  • Method Categories (5)

  • Method Description
  • Detector Properties
  • Detector Settings
  • Electrometer Settings
  • A/D Converter Settings
  • Result Blueprints (1)

  • ECD Trace
  • Bibliography

    Experiment Data Role Blueprints

    Data Source Experiment Data Role

    Reference to the GC separation experiment step.
    Experiment Flowconsumed
    Modalityrequired
    maxOccurs1

    Method Blueprint

    Category: Method Description (optional, max. 1 occurrences)
    Basic contextual information about the measurement method.

    Parameter: Method Name : String (optional, max. 1 occurrences)
    Name of the method used for the measurement.

    Parameter: Method Reference : String (optional, max. 1 occurrences)
    External reference to measurement method.

    Category: Detector Properties (optional, max. 1 occurrences)

    Parameter: Detector Geometry : String (optional, max. 1 occurrences)
    Collector electrode design.
    Allowed values: loop, tube, lateral plates, other

    Parameter: Detector Position : String (optional, max. 1 occurrences)
    Position of the detector in the instrument. Often called 'A' or 'B', 'left' or 'right', ...

    Parameter: Make Up Gas Identity : String (optional, max. 1 occurrences)
    Identity of the make up (also called auxiliary) gas of the detector.
    Allowed values: helium, hydrogen, nitrogen, argon, other

    Parameter: Moderating Gas Identity : String (optional, max. 1 occurrences)
    Identity of the moderating gas of the detector.
    Allowed values: argon + 5 % methane, nitrogen, other

    Parameter: Radiation Source : String (optional, max. 1 occurrences)
    Material used as a source of beta particles for ionization.
    Allowed values: tritium, nickel-63, krypton-85, other

    Parameter: Ionizer Type : String (optional, max. 1 occurrences)
    Physical form of radiation source.
    Allowed values: foil, rod, plate, other

    Category: Detector Settings (optional, max. 1 occurrences)

    Parameter: Block Temperature (Temperature: [K][°C][°F]) : Float (optional, max. 1 occurrences)
    Configured temperature of the detector base block.

    Parameter: Maximum Block Temperature (Temperature: [K][°C][°F]) : Float (optional, max. 1 occurrences)
    Configured maximum temperature of the detector base block.

    Parameter: Bias Voltage (Voltage: [V]) : Float (optional, max. 1 occurrences)
    Polarizing voltage.

    Parameter: Bias Voltage Type : String (optional, max. 1 occurrences)
    Whether the bias voltage is DC (continuous) or AC (pulsed).
    Allowed values: continuous, pulsed

    Parameter: Bias Voltage Pulse Rate (Frequency: [Hz]) : Float (optional, max. 1 occurrences)
    Frequency of the bias voltage pulse sequence.

    Parameter: Bias Voltage Pulse Period (Time: [ms][µs]) : Float (optional, max. 1 occurrences)
    Period of the bias voltage pulse.

    Parameter: Hydrogen Flow Rate (Flow Rate: [mL/min][µL/min]) : Float (optional, max. 1 occurrences)
    Flow rate of the hydrogen going to the flame.

    Parameter: Air Flow Rate (Flow Rate: [mL/min][µL/min]) : Float (optional, max. 1 occurrences)
    Flow rate of the air going to the flame.

    Parameter: Oxygen Flow Rate (Flow Rate: [mL/min][µL/min]) : Float (optional, max. 1 occurrences)
    Flow rate of the oxygen going to the flame.

    Parameter: Make Up Gas Flow Rate (Flow Rate: [mL/min][µL/min]) : Float (optional, max. 1 occurrences)
    Flow rate of the make up (also called auxiliary) gas.

    Parameter: Moderating Gas Flow Rate (Flow Rate: [mL/min][µL/min]) : Float (optional, max. 1 occurrences)
    Flow rate of the moderating gas.

    Category: Electrometer Settings (optional, max. 1 occurrences)

    Parameter: Range (Current: [A][mA][µA][nA][pA][fA]) : Float (optional, max. 1 occurrences)
    Full-scale range of the electrometer, mostly given in full decades.

    Parameter: Current to Voltage Conversion Factor (Factor: [A/V]) : Float (optional, max. 1 occurrences)
    Gain factor on the conversion from current to voltage.

    Parameter: Offset Current (Current: [µA][nA][pA][fA]) : Float (optional, max. 1 occurrences)
    Bucking (zero adjustment) current to remove background ions, applied before current-to-voltage conversion.

    Parameter: Offset Voltage (Voltage: [V][mV][µV][nV]) : Float (optional, max. 1 occurrences)
    Bucking (zero adjustment) voltage to remove background ions, applied after current-to-voltage conversion.

    Parameter: Attenuation Factor : Int (optional, max. 1 occurrences)
    Pre-A/D conversion amplitude control factor, typically in the range of 1-1024.

    Parameter: Bandwidth (Rate: [µV/s][mV/s]) : Float (optional, max. 1 occurrences)
    Response rate of the electrometer.

    Parameter: Time Constant (Time: [s][ms][µs]) : Float (optional, max. 1 occurrences)
    Amount of time required for response to reach 1-1/e (~ 63.2 %) full scale. [IEEE 421A-1978]

    Category: A/D Converter Settings (optional, max. 1 occurrences)

    Parameter: Channel ID : String (optional, max. 1 occurrences)
    A/D converter channel ID, e.g. 'A', 'B', ... or '1', '2', ...

    Parameter: Mode : String (optional, max. 1 occurrences)
    Acquisition scheme for detection.
    Allowed values: single-ended, differential

    Parameter: Range (Voltage: [V][mV][µV]) : Float (optional, max. 1 occurrences)
    Maximum full-scale voltage of the A/D converter.

    Parameter: Range Polarity : String (optional, max. 1 occurrences)
    Polarity of the voltage range of the A/D converter.
    Allowed values: positive, negative, bipolar

    Parameter: Resolution (Bits: [bits]) : Int (optional, max. 1 occurrences)
    A/D converter signal resolution, given in number of bits, e.g. 12, 16, 24.

    Parameter: Digitization Rate (Frequency: [Hz]) : Float (optional, max. 1 occurrences)
    Number of data points collected per second (after any averaging).

    Parameter: Averaging Factor (Count: ) : Float (optional, max. 1 occurrences)
    Number of raw values averaged to obtain a data point.

    Result Blueprints

    ECD Trace Result

    Time-base trace of ECD detector data.

    ECD Trace Series Set (required)

    Name Time Signal
    Documentation TODO Detector output signal
    Dependencyindependentdependent
    Data Type Float Float
    Modalityrequiredrequired
    maxOccurs11
    Plot Scalelinearlinear
    Quantity:UnitsTime : [ms][s][min]
    Voltage : [V][mV][µV][nV][pV]
    Current : [A][mA][µA][nA][pA][fA]
    Arbitrary : [arbitrary]
    Allowed Values

    Bibliography

    IEEE 421A-1978 - 1 reference
    IEEE Standard 421A-1978


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