| WDG-V |
| Principle of Operation (O2) |
Zirconium oxide for net oxygen measurement and dual hot-wire catalytic detectors for both combustibles and methane.
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| Output Range (O2) |
Oxygen: From 0-1 to 0-100%
Combustibles: 0-1000 PPM with Overrange 0-2,000 PPM to 0-10,000 PPM, 0-2 to 0-5%
Hydrocarbon: 0-5% |
| Accuracy (O2) |
±0.75% of measured value or ±0.05%, whichever is greater
Combustibles: ±2% of full scale output range
Hydrocarbon: ±5% of full scale output range |
| Response |
Oxygen: 90% of a step change < 11 seconds with Flame Arrestors
Combustibles & Hydrocarbon: 90% of a step change < 20 seconds with Flame Arrestors
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Aspirator Air Requirements
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3 SCFH Typical at 3 to 6 psig, Instrument air or Nitrogen |
| Analog Output |
Three 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 |
Set relays to energize or de-energize on alarm |
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Contact Rating
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0.5A, 30V, 10VA max. non-inductive load, AC or DC
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Digital Communication
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2 wire MODBUS RTU, 57.6 KBaud
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Configuration
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MODBUS RTU, AMETEK configuration software, or AMEVision HMI |
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Diagnostics
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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. |
| Sample Pressure |
±6 in. water gauge |
| Max. Sample Dewpoint |
392°F (200°C) |
| Max. Flue Gas Temp. / Probe Type / Lengths |
1300°F (704°C) / 316 SS / 36” - 108”(91 cm - 274 cm)
1875°F (1024°C) / 310 SS / 36” - 108”(91 cm - 274 cm)
3000°F (1648°C) / Hexoloy® / 24” - 72” (60 cm - 182 cm) |
| Environment |
Ambient Temp.: -25°C to 65°C
Relative Humidity: 5% to 95%, non-condensing |
| Enclosure |
Hinged IP65 (NEMA 4X), weather resistant, stainless steel, explosion-proof, purged, and floor mount versions available.
UL Class I, Div II, Gp B, C, D or ATEX Zone 2, T3 with Purge |
| 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 @ 10 psig, 1.5 SCFH (0.7 L/min.)
O2 Span Gas: Air or from 1.0% to 100% O2, balance N2
O2, Comb. & CH4 Zero Gases: From 0.1 to 10% O2, balance N2
Comb. Span Gas: 60 to 80% (PPM ranges) or 40% to 60% (% ranges) of the selected comb. recorder output range in certified equal mixtures of CO + H2, 3-4% O2, balance N2
Hydrocarbon Span Gas: 2% CH4, 8% to 10% O2, balance N2
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