Envent Model 131 BTU

BTU Gas Chromatograph

For a range of BTU applications

The Model 131S Natural Gas Chromatograph (GC) is a simple approach to energy measurement, created and designed for the custody transfer metering of Natural Gas as well as many other BTU applications.

Envent provides a Natural Gas platform that is efficiently manufactured to ensure industry-leading delivery while providing a Gas Chromatograph that allows for ease of serviceability.

  • Features
    • Standard: 4-minute C6+ repeatability +/- .25 BTU / 1,000 SCF
    • Optional: 2-minute Fast BTU C6+ repeatability +/- .5 BTU / 1,000 SCF
    • Optional: 5-minute BTU C9+ repeatability +/- .5 BTU / 1,000 SCF (heated sample system enclosure required)
    • High performance GC columns packed in our Envent GC Lab
    • Reduced carrier usage due to efficient column design
    • Environmental chamber tested prior to shipment
  • Specifications
    Environmental Temperature -18° to 54°C (0° to 130°F) Quoted per application
    Dimensions Standard Configuration: 48” H x 24” W x 9” D (122cm H x 61cm W x 23 cm D)
    Mounting Wall mount or floor mount
    Enclosure NEMA 4X
    Weight Approximately 40kg (88 lbs.).
    Electrical classification Class I, Division 1, Groups B, C, D
    Power 120 +/- 10% VAC 50/60 Hz Standard
    240 +/- 10% VAC 50/60 Hz Available
    Power Consumption Start up: 150 watts
    Steady State: 60 - 80 watts nominal
    Oven Airless Heat Sink
    GC Valves Six-port and ten-port diaphragm chromatograph valves. Liquid injection rotary valves
    Thermal Conductivity Detector (TCD)
    Single or Dual TCD Capabilities (2-min application)
    Stream Valves Double Block and Bleed
    Repeatability

    C6+ 4-minute Controlled Temperature
    ±0.25 BTU / 1,000 SCF (±0.025%) at ambient
    ±0.4 BTU / 1,000 SCF (±0.04%) over temp range of -18º to 54ºC (0º to
    130ºF)

    C6+ 2-minute Controlled Temperature
    ±0.5 BTU / 1,000 SCF (±0.05%) at ambient
    ±1 BTU / 1,000 SCF (±0.1%) over temp range of -18º to 54ºC (0º to 130ºF)

    Carrier Gas UHP Helium (99.999%) or UHP Hydrogen (99.999%)
    Actuation Gas  Helium, Nitrogen, Instrument Air
    (GC Valves/Stream Valves Regulated to 65 psig)
    Detector Thermal Conductivity Detector: Single or Dual TCD capabilities
    Single TCD (4-minute C6+)
    Dual TCD (2-minute C6+ Fast BTU Option)
    Peak Gating Auto-Slope detection
    Streams Up to 4 Custody streams (plus auto-calibration stream)
    Input/Output 2 analog outputs
    4 dry contact relay outputs
    4 digital inputs
    4 solenoid outputs
    Communications SIM 2251 Modbus mapping
    User Modbus mapping
    1 RS-232 serial communication ports (Modbus capable)
    2 RS-485 serial communication ports (Modbus capable)
    1 Ethernet communication port RJ-45 (Modbus capable)
    Measurement Calculations Latest GPA 2145, GPA 2172, AGA 8, and ISO 6976 calculations
  • Downloads
  • Certification
  • User Interface
    • I.C.E. (Integrated Configuration Environment) is a Windows® based program that accompanies all Analyzers for full configurability.
    • Field friendly interface via front display panel
    • Easily configurable alarm processor and calculation processor
    • 3 Mb event triggered archive storage
    • Alarm/Event log
    • Customizable serial RS-232 & RS-485 mapping
    • Numerous modes of communication including 4-20mA outputs, alarm outputs, solenoid drivers, serial Modbus and Modbus TCP

Contact us to learn more about this product

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