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Model 131S BTU Gas Chromatograph
Brand: Envent EngineeringThe 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 GC that allows for ease of serviceability.
Compliant with EPA Renewable Fuel Standards and ASTM D7164-21
Features- Standard: 4-minute C6+ repeatability ±0.25 BTU / 1,000 SCF
- Optional: 2-minute Fast BTU C6+ repeatability ±0.5 BTU / 1,000 SCF
- Optional: 5-minute BTU C9+ repeatability ± 0.5 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
Brand
Environmental Temperature
- -20° to 60° C (-4° to 140° F) Quoted per application
Dimensions
- Standard 48” H x 24” W x 9” D (122 cm H x 61 cm W x 23 cm D)
Mounting
- Wall mount
- Floor mount
Enclosure
- NEMA 4X
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: 100 watts (does not include sample system electronics)
- Steady State: 60 - 80 watts nominal
Oven
- Airless Heat Sink
GC Valves
- Six-port and ten-port diaphragm chromatograph valves (application dependent)
Stream Valves
- Double Block and Bleed
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
Input/Output
- Two (2) analog outputs
- Four (4) dry contact relay outputs
- Four (4) digital inputs
- Four (4) solenoid outputs
Communications
- SIM 2251 Modbus mapping
- User Modbus mapping
- One (1) RS-232 serial communication ports (Modbus capable)
- Two (2) RS-485 serial communication ports (Modbus capable)
- One (1) Ethernet communication port RJ-45 (Modbus capable)
Measurement Calculations
- Latest GPA 2145, GPA 2172, AGA 8, and ISO 6976 calculations
- Compliant with EPA Renewable Fuel Standards & ASTM D7164-21
