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, servicability,  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
    Environmental 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

    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.
  • 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

Gas Chromatographs

Model 131S Gas Chromatograph

Envent's Class I Division 1 GC is designed to provide accurate and reliable measurements for a variety of applications.

Model 132S Gas Chromatograph

Envent's Class I Division 2 GC is designed to provide accurate and reliable measurements for a variety of applications.