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XMO2 Thermoparamagnetic O2 Transmitter

XMO2 Thermoparamagnetic O2 Transmitter

 

The XMO2 transmitter provides computer-enhanced, drift-free oxygen measurement in a compact, rugged, online transmitter. It can be used wherever accurate and reliable long-term oxygen measurement is critical to process and product quality. This includes inerting/blanketing liquid storage tanks, reactor feed gases, flare gas, catalyst regeneration, oxygen purity and many other applications.

Features

  • Measures oxygen from 0.01 to 100 percent in gases.
  • No moving parts; maintenance-free
  • Corrosion-resistant design
  • Automatic background-gas compensation
  • Use as stand-alone transmitter or in conjuction with TMO2D or XDP display packages

Applications

An oxygen transmitter for use in:

• Inerting/blanketing liquid storage tanks

• Reactor feed gases

• Centrifuge gases

• Catalyst regeneration

• Solvent recovery

• Landfill gas

• Sewage wastewater digester gas

• Oxygen purity

Specifications

The XMO2 is specifically designed to overcome the limitations of conventional oxygen analyzers. It does not require analyzer shack installation in a general-purpose area, but can be field-mounted at the process measuring point. This minimizes sample conditioning requirements and ensures the best sample and the fastest possible response. Unlike other paramagnetic oxygen sensors, the XMO2 has no moving parts, making it insensitive to mounting position or vibration and providing excellent long-term reliability. The unique, dual-chamber oxygen cell design insures insensitivity to contamination and flow variations and provides a zero and span stability that makes recalibration typically only a biannual requirement.

An on-board microprocessor enables the XMO2 to provide advanced online signal detection and conditioning, real-time error detection and automatic compensation of the oxygen reading for background gas and/or pressure variations. This results in a linearity of better than 0.5 percent of span, a long-term accuracy of 1 percent of span and a stability of 0.8 percent of span per month. A proprietary fast-response software routine enhances the standard response of the thermoparamagnetic oxygen sensor, providing typical times of less than five seconds for a 63 percent response.

The user-friendly XMO2 can be programmed in the field or remotely with application-specific data via an RS232 interface and three-level, menu-driven software. When recalibration becomes necessary, it can be accomplished quickly and easily through software, with no pots to adjust. A complete line of performance-enhancing accessories make the XMO2 even easier to use. These accessories include custom-designed sampling systems and different styles of digital display packages.

The XMO2 transmitter requires 24-VDC power and provides an isolated 4- to 20-mA output signal for oxygen concentration that is programmable for zero and span. It is available in either weatherproof (NEMA 4X, IP65) or explosion-proof (NEMA 7) enclosures and in ranges from 0 to 1 percent to 0 to 100 percent, making it suitable for a wide variety of installations and applications.

Accuracy
  • ±1% of span • ±2% of span for 0 to 1% range
  • ±0.2% O2 for 90 to 100% and 80 to 100% ranges
Linearity ±0.5% of span
Repeatability ±0.2% of span
Measurement Resolution 0.01 mA
Zero Stability ±1% of span per month (±2% for 0 to 1% range)
Span Stability ±0.4% of span per month (±0.8% for 0 to 1% range)
Measurement Ranges (Typical)
  • 0% to 1%
  • 0% to 25%
  • 0% to 2%
  • 0% to 50%*
  • 0% to 5%
  • 0% to 100%*
  • 0% to 10%
  • 90% to 100%*
  • 0% to 21%
  • 80% to 100%* *Pressure compensation required
Transmitter Temperature
  • Standard: Controlled to 113°F (45°C)
  • Optional: Controlled to 140°F (60°C)
Transmitter Dimensions XM02_1
Pressure Effect
  • ±0.2% of reading per mm Hg (without pressure compensation)
  •  Option available for pressure compensation
Required Sample Flow Rate 0.1–2.0 SCFH (50–1,000 cc/min), 1.0 SCFH (500 cc/min) nominal
Sample Flow Rate Effect Less than 1% of span for flow range of 0.1 to 2.0 SCFH (50 to 1000 cc/min) for weatherproof XMO2 with background gas compensation
Response Time, 90% Step Change
  • Fast 15 seconds
  • EN50104 45 seconds
  • Standard 70 seconds
Warm-Up Time 30 minutes

Functional

Analog Output 4 to 20 mA, isolated, 800 Ω maximum, field programmable
Digital Output RS232, three-wire
Measurement Resolution 24 VDC ±4 VDC, 1.2 A maximum
Cable
  • Standard: 10 ft (3 m), four-wire
  • Lengths up to 4000 ft (1200 m) available for current output
Ambient Temperature Range (Sample Conditions): • –4°F to 104°F (–20°C to 40°C), standard cell operating temperature of 113°F (45°C) • 23°F to 131°F (–5°C to 55°C), optional cell operating temperature of 140°F (60°C)
Maximum Pressure 20 psig, 1.4 bar(g)

Physical

Wetted Sensor Materials

Standard: 316 stainless steel, glass and Viton® O-rings

Optional: Hastelloy® C276 and Chemraz® O-rings

Dimensions
  • Weatherproof unit (h x dia): 9.53 in x 5.71 in (242 mm x 145 mm)
  • Explosion-proof/weatherproof unit (h x dia): 10.47 in x 5.71 in (266 mm x 145 mm)
Weight 9.5 lb (4.3 kg)
Environmental, Transmitter
  • Weatherproof: Type 4X/IP66
  • Explosion-proof: Class I, Division 1, Groups A,B,C&D, FM/CSA
  • Flameproof: II 2 GD EEx d IIC T6 ISSeP02ATEX022;Ex d II C T6 IP66 Class I, Zone 1 ATEX compliance with EN50104 requires response-time calibration to EN50104 and constant control of samplesystem pressure or pressure compensation of XMO2.
Environmental, Rack Mount Rack-mount configuration is suitable for ordinary locations only. Not suitable for use in hazardous (classified) locations.
European Compliance Complies with EMC Directive 2004/108/EC and PED 97/23/EC for DN<25 (CE approval pending for rack mount)
Lloyd’s Registry Approval Please refer to the XMO2-LR data sheet for details.

 

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Descriptions 中文 Dutch English Français Deutsch Italiano 日本語 Português Russian Español Turkey
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