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Rosemount™ 700XA Process Gas Chromatograph
The Rosemount™ 700XA process gas chromatograph provides extended analysis for extreme conditions.
The 700XA offers increased analytical capacity, reliability, and maintainability, combined with a wide range of analysis options in a field-mount gas chromatograph. With a redesigned, single-cast enclosure, the 700XA offers an efficient use of oven space to accommodate both micropacked and capillary columns, as many as four 10-port valves, a rotary valve for liquid injections, up to two thermal conductivity detectors, and an optional micro flame ionization detector (?FID). With a significant reduction in internal cabling used within, the 700XA allows maximum access to valves and internal components, making maintenance quick and easy.
Rosemount™ 700XA Process Gas Chromatograph


Communication Protocol
Ethernet: Two ports – one RJ-45 and one four-wire – with 10/100 mbps
Serial: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
Analog inputs: Two standard isolated inputs filtered with transient protection, 4–20 mA (user scalable and assignable)
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Analog outputs: Six self-powered isolated outputs (4–20 mA)
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
CSA: For USA: Class I, Zone 1, AEx d IIC, Enclosure Type 4 • Class I, Division 1, Groups B, C, and D, IP66
For CANADA: Class I, Zone 1, Ex d IIC, Enclosure Type 4 • Class I, Division 1, Groups B, C, and D, IP66
Ex d IIC Gb T6 (Ta = -20 °C to 60 °C)
Wall-mount: 711 mm H x 445 mm W x 498 mm D (28 H x 17.5“ W x 19.6“ D)
Pipe-mount: 711 mm H x 445 mm W x 671 mm D(28“ H x 17.5“ W x 26.4“ D)
Floor-mount: 1532 mm H x 445 mm W x 612 mm D (60.3“ H x 17.5“ W x 24.1“ D)"
Floor-standing (standard), wall- or pipe-mount (optional)
50 kg (110 lbs.)


  • Fully compatible with modern Ethernet networks and DCS communication
  • Diaphragm-based chromatograph valves available in 6-port and 10-port versions
  • Thermal conductivity detector (TCD) sensitive down to very low parts-per-million levels
  • Flame ionization detector (FID) sensitive to parts-per-billion levels
  • Storage of up to 2,500 chromatographs, including sample calibration and validation streams
  • Archives up to 64 item averages and up to 35 days of standard runs and calculation
  • Standard 24 VDC power
  • Integrated controller electronics
  • Designed for field-mounting without the need for expensive shelters and without sacrificing analytical power
  • High repeatability - + 0.0125 of heating value (+0.125 BTU/1000 BTU) for controlled-environment C6+ analysis and +0.025 of heating value (+0.25 BTU/1000 BTU) for uncontrolled environment (-20° to 60° C/ -4° to 140° F) C6+ analysis
  • Wide dynamic range from percent to trace-level components