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Chandler Engineering includes dew point testers, moisture analyzers, natural gas chromatographs, liquid densitometers, and gas gravitometers.
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Model 2920 On-line BTU Analyzer Chromatograph Download printable brochure.
The Need
For years, the natural gas industry has needed a highly reliable, field-ready, on-line BTU Analyzer. The analyzer needs to be easy to install, easy to operate, and easy to maintain with true, bi-directional communications for remote control and troubleshooting. All these features need to be available at a low cost.
Today, Chandler -- one of the most trusted names in oil and gas equipment for over 50 years -- has met the need.
The Solution
The Model 2920 BTU Analyzer System is a stand-alone gas chromatograph designed to measure the heating value of up to six natural gas streams. Built to withstand harsh environmental conditions, it delivers the repeatability and accuracy of a laboratory gas chromatograph.
Manufactured by Chandler Engineering, the 2920 is an extremely reliable GC which also happens to be very simple to start up and operate even when one has minimal familiarity with chromatographs.
The 2920 provides measurements of per cent composition, BTU value, Wobbe Index, compressibility, and relative density (specific gravity).
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Specifications
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Performance
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Range:
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0-2000 BTU/scf
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Repeatability:
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±0.05% or ±0.5 BTU/1000 BTU
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Environmental
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Operating Temp:
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-10° to 110°F (-25-45°C)
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Enclosure:
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NEMA 4
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Sample:
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Analyzes liquid-free natural gas that contains nitrogen, methane, carbon dioxide, ethane, propane, I-butane, N-butane, I-pentane, neopentane, N-pentane, C6 and heavier components.
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Max Inlet Pressure:
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50 psig (450 kPa)
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Min Inlet Pressure:
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7 - 10 psig (48 - 69 kPa). Lower pressures are possible if lag time is not excessive.
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Connection:
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1/8” stainless steel tube Speed Loop: Each inlet is equipped with a speed loop. Can be disabled to minimize emissions.
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Conditioning:
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Sample probe, regulator and coalescing filter recommended for each stream.
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Power Requirements:
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115 or 230 VAC ± 10%, 50/60 Hz 250 VA startup, 40 VA operating
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Gas Requirements
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Carrier Gas:
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Zero-grade helium (99.995% pure)
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Pressure:
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150 psig (1135 kPa)
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Connection:
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1/8” SS tube
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Usage:
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Full-size bottle @ 2200 psig (15 Mpa) Will last approximately 3 months.
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Analog Output Signals
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Chromatogram:
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0-10 VDC, 1000 Ohm impedance.
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Oven temperature:
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0-10 VDC, 1000 Ohm impedence.
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4-20 mA outputs:
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Model 298 transmitter option provides four 4-20 mA outputs per stream. Connects to
auxiliary port.
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Alarms:
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8 programmable hardware Hi/Lo
alarms (optional)
120 software alarms
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Printer Interface
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Parallel Port:
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Centronics interface to dot-matrix, laserjet or inkjet printer.
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Main Port:
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RS-232C, 300-9600 baud, non/even/odd parity, 7 or 8 word length, 1 or 2 stop bits, modem compatible, DTE.
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Aux Port:
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RS-232C, 300-9600 baud, non/even/odd parity, 7 or 8 word length, 1 stop bit, local 3-wire communication, DTE. Hayes®-compatible modem, leased line modems, cellular modems, and radio modems can be used with the main port. Both ports can be used with Modbus® ASCII communications to a variety of RTU and flow computers. Consult the factory for further details.
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