THERMOX - Model WDG Insitu Probe - Flue Gas Oxygen Probe
From Zirconia Oxygen Analyzers
Completely field serviceable, the WDG Insitu is a direct-sensing oxygen (O2) probe suitable for applications where the flue gas temperature does not exceed 800oC (1472oF). With a range of different probe lengths offered, its unique inner/outer probe design enables the removal of cell, heater and thermocouple assembly through the probe head.
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Product Details
The removable inner probe assembly exposes the reference side of the zirconium oxide cell to ambient air, eliminating the need for instrument air at the probe mounting. The outer support stays mounted to the process.
Combining easy component access with reduced utility requirements, the WDG Insitu provides a cost-effective, reduced maintenance solution for fired boiler operations in the hydrocarbon processing, metals and mining and power and steam generation industries.
COMPLETELY FIELD-SERVICEABLE
The unique design means that once the inner probe assembly is removed, the outer probe support pipe allows straight-run access to the insitu filter for cleaning with compressed air.
REDUCED UTILITY REQUIREMENTS
There is no requirement for instrument air utilities where the probe is mounted, because the inner probe assembly design ensures the zirconium cell is exposed to ambient air on its reference side.
SERIES 2000 CONTROL UNIT
This microprocessor-based control unit maximizes integration with existing plant or process control systems. It provides a four-line local display, analog outputs, alarms, expanded system diagnostics and an autocalibration option.
The WDG Insitu probe is the direct-sensing flue gas analyzer with a unique design for complete field service capabilities – Find out more.
- Hot-wet oxygen analysis
- Range of probe lengths
- Easy maintenance
- Detachable probe design
Specifications:
- Principle of Operation: Zirconium Oxide
- Output Range: From 0-1% to 0-100% oxygen
- Accuracy: ±1% of measured value or ±0.05% oxygen, whichever is greater
- Response: 63% of a step change in
- Drift:
- Linearity: ±1% of output span
- Repeatability: ±1% of output span
- Max. Flue Gas Temp: 1250ºF (600ºC). Probe material highly corrosion resistant
- Alarm: Alarm can be set to oxygen, start of calibration, start of verify, or both
- Contact Rating: 1 A, 30 V max., noninductive load, AC or DC
- Diagnostics: Watchdog timer and service alarm (trouble alarm). System test for A/D, RAM, and EEPROM. Twenty-entry event log.
- Communications: RS-485, RS-232 (IQ links), HART© Option available
- Analog Output: Isolated linear current output. Select O2, cell temperature, thermocouple mV or cell mV. The output can be 4-20 mA, 0-20 mA, 20-4 mA or 20-0 mA and is fully scalable. Hold or track during calibration and select degree of damping. Maximum load 1100 ohms.
- Sample Pressure: ±10 in. water gauge
- Power Requirements: 115 VAC, ±10%, 47-63 Hz; 230 VAC, ±10%, 47-63 Hz, 150 VA max.
- Enclosure: UL Type 4X (NEMA 4X). Optional NEC Class 1, Div 2 version available (for subatmospheric pressure only)
- Calibration: Oxygen cell lifetime extender. Calibrate or verify calibration. Store last calibration gas run time and process recovery time. Timed automatic calibration with optional Remote Calibration Unit.
- Calibration Gas Requirements: Use calibration gases at 10 psig, 1 to 2 schf (0.70 kg/cm2, 0.47 to 0.94 L/min)
Features
There are two control options available for the WDG Insitu flue gas oxygen probe to maximize integration with existing plant or process control system:
- 2000 Series Microprocessor Control provides 4 line local display, analog outputs, alarms, expanded system diagnostics, auto calibration option.
- 1200/1210 Series Compact Control provides 2 line local display, one analog output, alarms, general system diagnostics, software supported manual calibration.
- Completely field serviceable.
Certifications
UL Listed for NEC Class I, Division 2 areas
System Compliance:
- EMC Directive 2004/108/EC
- Low Voltage Directive 73/23/EEC
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