Envent Model 131S

Process Gas Chromatograph

Ranges from ppm levels to 100%

Designed to provide accurate and reliable measurements for a variety of the applications commonly found in the Oil and Gas industry. The Model 131S design offers many features while still offering a level of simplicity, serviceability,  affordability and reasonable delivery times that many end-users desire.

Envent’s capability to provide customized sample conditioning systems, integration services and the necessary analytical accessories makes the Model 131S an excellent choice for many analytical process measurement requirements. 

  • Features
    • Ranges from ppm to 100%
    • Superior Repeatability
    • Windows®-based interface
    • Data Logging
    • Chart/Chromatogram Archives
    • Serial Communications: RS-232, RS-485
    • Dual 4-20 mA outputs
    • Configurable Modbus
    • 10-port or 6-port chromatographic valve
    • Excellent sensitivity at low ppm ranges
    • Thermistor TCD  for ppm to % level components
    • Heat Sink Iso-Thermal oven; No Instrument air required
    • Multiple Stream capabilities; up to 10 streams possible
    • GPA 2145-16 and AGA 8 - ISO 6976 2016E
    • Low carrier consumption
  • Applications

    Typical applications include:

    • Gas Processing: Plant Inlet, Sales/Outlet, Sour Gas Pipeline Blending
    • NGL Fractionation: De-ethanizer, De-propanizer and De-butanizer tops and bottoms
    • Ethanol and Methanol in NGL
    • C5+ Stabilized Condensate
    • C6+
    • C9+ 
    • Waste and Fuel Gas Analysis
    • Biogas and Landfill
    • LNGs and LPGs
    • Power Generation/ Gas Turbine Control
    • Custom Applications
  • Specifications
    Ambient Temperature -20°C to 60°C (-4°F to 140°F).
    Dimensions 32″ H x 14″ W x 8″ D (no sample system), (81.3cm H x 35.6cm W x 20.3cm D).
    Mounting Wall mount or Floor mount
    Weight Approximately 40kg (88 lbs.).
    Electrical classification Certified for Class I, Division 1, Groups B, C, D
    Power 120 VAC 50/60 Hz Standard,
    240 VAC 50/60 Hz Available
    Power Consumption Start up: 175 watts.
    Steady State: 100 watts nominal
    Oven Airless Heat Sink Iso-Thermal, maximum 150°C (302°F).
    Valves Six-port and ten-port diaphragm chromatograph valves. Liquid injection rotary valves
    Performance/Repeatability

    C6+ 4 minute Controlled Temperature: 

    ±0.25 Btu per 1,000 Btu/SCF (±0.025%) at ambient; 

    ±0.4 Btu per 1,000 Btu (±0.04%) over temperature range; of -5°F to 140°F (-20°C to 60°C) 

    20°C to 60°C (-4° to 140°F) +/- 0.4 Btu per 1,000 Btu/SCF 

    C6+ 2 minute Controlled Temperature: +/- 0.5 Btu, per 1,000 Btu/SCF  

    -20° to 60°C (-4° to 140°F) +/- 1 Btu per 1,000 Btu/SCF 

    Carrier Gas

    Application-dependent. Typically UHP Helium (99.995%),
    Typically 414 – 690kPa (60 – 100psig).

    Hydrogen or Nitrogen available upon request

    Detector Thermal conductivity detector (TCD).
    Gating Options Fixed-time, auto-detection.
    Streams Up to 10 streams (includes calibration streams).
    Communications *Two analog outputs.
    *Four dry contact relay outputs.
    Four digital inputs.
    Eight digital outputs.
    Two RS-232 serial communication ports.
    Four RS-485 serial communication ports.
    One Ethernet communications port.
    *Eight additional analog outputs and four additional dry contact relays with Analog Expander Board (optional).
    GC Software Windows® software for GC configuration, archive retrieval, and Modbus mapping.
    Custody Transfer Approved for Custody Transfer Applications by Measurement Canada.
    Note Product specifications subject to change without notice to improve reliability, function, design, or otherwise.
  • Downloads
  • Certification
  • Software
    • 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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