WDG-IV UOP/RP Analyzer


The WDG UOP/RP was designed in conjunction with UOP Continuous Catalyst Regeneration process requirements for meeting the purpose of low level oxygen measurement during the regeneration cycle in which coke deposits are removed from the catalyst by oxidation. The WDG UOP/RP Analyzer has a specially treated Zirconium Oxide cell which is used to survive the destructive effects of halogen-oxidation. The sensor uses a nitrogen-operated aspirator to
draw a sample of gas from the catalyst regenerator. A portion of this gas passes over the zirconia sensor. Because the aspirator gas contains no oxygen, the sample can simply be returned to the process.  

Current control option for the WDG-IV UOP/RP is:

  • 2000 Series Microprocessor Control provides 4 line local display, analog outputs, alarms, expanded system diagnostics, auto calibration option and RS485 communication.
    • High reliability
    • Hastelloy probe tube
    • 316 SS Wetted parts
    • All Wetted parts heated
    • Dual isolation valves
  • Specifications +

    WDG-IV UOP RP Combustion Analyzer
    Principle of Operation (O2) Close-coupled nitrogen-aspirated oxygen analyzer using zirconium oxide for net oxygen measurement.


    Output Range (O2) Oxygen: From 0-1 to 0-100%
    Accuracy (O2) ±0.75% of measured value or ±0.05%, whichever is greater
    Response Oxygen: 90% of a step change < 30 seconds
    Aspirator Air Requirements 10-20 SCFH (4.72 to 9.4 L/min) Typical at 15 to 100 psig
    Analog Output Two isolated linear current outputs for O2, combustibles and hydrocarbon. Each output can be 4-20 mA, 0-20 mA, 20-4 mA or 20-0 mA and is fully scalable. NAMUR Configurable. Hold or track during calibration. Max. load 1200 Ω
    Alarms Two independent oxygen alarms each high or low selectable
    Set relays to energize or de-energize on alarm
    Contact Rating 0.5A, 30V, 10VA max. non-inductive load, AC or DC
    Digital Communication RS-485, 2-way addressable
    Configuration MODBUS RTU, AMETEK configuration software, or AMEVision HMI
    Diagnostics Watchdog timer and service alarms. Twenty-entry event log.
    Calibration Calibrate or verify calibration. Stored calibration and verification data. Selectable calibration gas run time and process recovery time. Timed automatic calibration with optional Remote Calibration Unit.
    Sample Pressure Max. 60 psig
    Max. Sample Dewpoint 392°F (200°C)
    Environment Ambient Temp.: -10°C to 60°C
    Relative Humidity: 0% to 80%, non-condensing
    Enclosure Weatherproof, purged, stainless steel - wall or panel mount NEMA 4X. Bolted explosion-proof optional.
    Power Requirements 115 VAC, ±10%, 47-63 Hz, 740 VA max.; 230 VAC, ±10%, 47-63 Hz, 740 VA max.
    Calibration Gas Requirements Use calibration gases @ 45 psig

    O2 Span Gas: Air
    O2 Zero Gas: 1% O2

  • Documents +

  • Certifications +

    UL Listed for NEC Class I, Division 2 with the Division 2 option.