WDG VRM (Rack Mount)0 pages

WDG-VRM

THERMOX

®

PROCESS INSTRUMENTS

oxygen analyzer

Oxygen analyzer that can be used alone or as an integrated part of a CEM
(Continuous Emission Monitoring) system.

SENSOR
Principle of Operation: Zirconium oxide for net oxygen measurement
Output Range: Oxygen: From 0-1 to 0-100%
Accuracy:
Oxygen: ±0.75% of measured value or ±0.05%, whichever is greater
Drift: < 0.1% of cell output per month
(< 0.005% O2 per month with 2% O2 applied)

Response: Less than 5 seconds @ 2 scfh from 2% O2 to 20% O2
Analog Output: Three isolated linear current outputs for O2.
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: Five independent, NO alarms
Set relays to energize or de-energize on alarm
Contact Rating: 0.5A, 30V, 10VA max. non-inductive load, AC or DC
Display: 4.2” Color 1/4W VGA with Graphical User Interface. Password
protected.
Digital Outputs: 2 or 4 wire MODBUS RTU, TCP/IP Ethernet with
embedded Web Server (RJ45 connection), USB Port for Data collection
or software update.
Keypad: 18 key, Membrane

Diagnostics: Low Sample Flow, Cell & Detector age tracking, Cell resistance, Calibration required, Analog current
verification
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.
Environment:
Ambient Temp.: -25°C to 50°C
Relative Humidity: 10% to 90%, non-condensing
Enclosure: 19” Rack mount, 4U
Power Requirements: 115 VAC, ±10%, 47-63 Hz, 740 VA
max.; 230 VAC, ±10%, 47-63 Hz, 1950 VA max.
Calibration Gas Requirements:
Use calibration gases @ 10 psig,
O2 Span Gas: Air or from 1.0% to 100% O2, balance N2
O2, Zero Gases: From 0.1 to 10% O2, balance N2
Sample Gas Requirements:
Flow Rate: 2-20 scfh
Gas must be non-corrosive, non-condensing, free from oil,
and less than 3 micron particulates

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