XMO2

Panametrics smart
oxygen analyzer
Applications

Features

An oxygen transmitter for use in:• Measurement ranges from 0.01 percent to 100 percent
O2 in gases• Inerting/blanketing liquid storage tanks• Reactor feed gases• Centrifuge gases• Catalyst regeneration• Solvent recovery• Landfill gas• Sewage wastewater digester gas• Oxygen purity• Explosion-proof and flameproof enclosure withweatherproof protection allows sensor to be remotely
mounted at the measurement point• Push-button, single or dual gas calibration• Compact, rugged sensor design with no moving parts
provides long term reliability and trouble-free operation• Dual-bridge measurement circuit compensates forvariations in background gas composition• Unique dual-chamber, temperature-controlled cell design
provides resistance to contamination and flow fluctuation• Computer-enhanced accuracy of 1 percent of span andlinearity of better than 0.5 percent of span

Smart oxygen transmitter

Choice of enclosures and ranges

The XMO2 thermoparamagnetic oxygen transmitter is themost stable oxygen analyzer available on the market today.
It represents the state of the art in oxygen measurement.
With the XMO2 transmitter, reliable process oxygen
measurement can be as easy as temperature or pressure
measurement.

The XMO2 requires 24 VDC power and provides a 4 to 20 mA
output signal with fully programmable zero and spansettings. The output is proportional to oxygen concentrationand internally compensated for background gas and/oratmospheric pressure variations. The weatherproof andexplosion-proof options are available in a wide variety ofmeasurement ranges.

Top performance and ease of use
The XMO2 combines computer-enhanced, automatic oxygen
signal compensation, fast-response software, real-timeerror detection and automated calibration with a proventhermoparamagnetic oxygen sensor to achieve unequaled
performance and ease of use.
The compact, weatherproof, explosion-proof and flameproof
XMO2 is specifically designed to be field installed at theprocess measurement point, thus minimizing sampleconditioning requirements while ensuring the best sample
and the fastest possible response. With no moving parts, it
is insensitive to mounting position or vibration, and it has
excellent long-term reliability. The XMO2’s dual-chamber
oxygen cell design makes it resistant to contamination andflow variation.

Automatic background gas compensation
An onboard microprocessor gives the XMO2 the computing
power to provide advanced online signal conditioning anddigital communications via an RS232 interface and menudriven software. Integrated signal-processing algorithms
provide improved linearity and accuracy, and automaticcompensation for background gas variations and/or
atmospheric pressure effects. A fast-response software
routine provides typical response time of less than 15seconds. When recalibration does become necessary, it canbe accomplished quickly and easily through software, withno potentiometers to adjust.

XMO2 accessories
Panametrics provides a complete line of accessories for use
with the XMO2. This includes sample systems custom-designed
for specific applications, a 24 VDC power supply and a four-wirecolor-coded cable in lengths up to 4000 ft (1200 m). The XMO2
can also be interfaced with other Panametrics displays andanalyzers, such as the TMO2D, XDP and moisture.IQ analyzers.
The TMO2D and XDP displays provide microprocessor-based
oxygen signal compensation for maximum accuracy, softwareenhanced response and automatic calibration of the XMO2transmitter.
Inducedgas flow

Uppermeasurement
chamberUpperflow-throughchamber

Sample inlet

Wind generating (cooled) thermistor

Windreceiving(warmed)
thermistor

Magneticfield

Sample outlet

Flow schematic of the XMO2 thermoparamagnetic oxygen measuringcell. Oxygens paramagnetic property causes an oxygen-containing
gas sample to move within the magnetic field. The gas movement
creates a “magnetic wind” that is sensed by the thermistor pairs. Oxygen
concentration and background gas compensation are determined by thetransmitters microprocessor.

Dimensions

6 in (155 mm)

5.7 in (145 mm)

3/4 in NPTF

9.5 in (242 mm)*10.4 in (266 mm)**

2.7 in(70 mm)

XMO2transmitter
8.6 in(220 mm)

0.59 in(15 mm)4 in (105 mm)*
5 in (129 mm)**

0.39 in (10 mm)
diameter

Optional flame arrestor
for explosion proof units only

1/4 in NPTF

1 in(29.5 mm)
3.2 in(83 mm)
4.4 in(113.3 mm)*Weatherproof**Explosion proof

Specifications
Accuracy

Transmitter temperature• ±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

• Standard: Controlled to 113°F (45°C)• Optional: Controlled to 140°F (60°C)
Pressure effect• ±0.2% of reading per mm Hg(without atmospheric pressure compensation)

Repeatability±0.2% of span

• Option available for atmospheric pressure compensation

Measurement resolution
0.01 mA• Nominal: 1.0 SCFH (500 cc/min)

Required sample flow rate

• Range: 0.1–2.0 SCFH (50–1000 cc/min)

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)

Sample flow rate effectLess than 1% of span for flow range of 0.1 to 2.0 SCFH (50 to1000 cc/min) for weatherproof XMO2 with background gascompensation

Digital interfaces

Response time, 90% step change• 0% to 2%• EN50104: 45 seconds• 0% to 10%

Warm-up time
30 minutes• 0% to 1%• Standard: 70 seconds• 0% to 5%• Fast: 15 seconds• 0% to 21%• 0% to 25%• 0% to 50%*

• 0% to 100%*• 90% to 100%*• 80% to 100%**Pressure compensation required

The XMO2 output may be used as an input to the Panametrics moisture.IQ analyzer
for simultaneous measurement and display of both moisture and oxygen content.

Functional

PhysicalAnalog output
4 to 20 mA, isolated, 800 Ω maximum load,
field programmable

Wetted sensor materials• Standard: 316 stainless steel, glass and Viton® O-rings

Digital output
RS232, three-wire• Optional: 316 Stainless steel, glass and Chemraz® O-Rings

Power24 VDC ±4 VDC, 1.2 A maximum• Optional: Hastelloy® C276 and Chemraz® O-rings
Dimensions• Weatherproof unit (h x diameter):9.53 x 5.71 in. (242 x 145 mm)

Cable• Standard: 10 ft (3 m), four-wire• Explosion-proof/weatherproof unit (h x diameter):
10.47 x 5.71 in. (266 x 145 mm• Optional: Lengths up to 4000 ft (1200 m) available forcurrent output

Weight9.5 lb (4.3 kg)

Ambient temperature range(Sample conditions):

European compliance
Complies with the 2014/30/EU EMC Directive and the 2014/68/
EU PED Directive for DN<25• –4 to 104°F (–20 to 40°C), standard cell operating
temperature of 113°F (45°C)• 23 to 131°F (–5 to 55°C), optional cell operating
temperature of 140°F (60°C)
Maximum pressure
20 psig (1.38 barg)

Environmental, transmitter• Weatherproof: Type 4X/IP66• Explosion-proof: Class I, Division 1, Groups A,B,C&D, FM/CSA• Flameproof:
ATEX : Ex II 2 GD Ex d IIc TC IP66
IECEX : Ex d IIc T6 IP 66 Class 1 Zone 1

ATEX compliance with EN50104 requires response-time calibration toEN50104 and constant control of sample-system pressure or pressurecompensation of XMO2.

Ordering information
XMO2 Transmitter
AModel:XMO2BCDEF

XMO2 Thermoparamagnetic Oxygen Transmitter, 4 to 20 mA output
Package:1
Weatherproof enclosure
2Explosion proof enclosure
3
Weatherproof with external cal switch
4Explosion proof with external cal switch
5
Weatherproof with external dual calibration switches
6Explosion proof with external dual calibration switches, design certified to ATEX only
7
Stainless steel explosion proof enclosure; design certified to ATEX only
8
Stainless steel explosion proof enclosure with external calibration button; design certified to ATEX onlyA
Stainless steel explosion proof enclosure with external zero/span selector switch and calibration button; design certified to ATEX only
X
Without enclosure
Y
Without enclosure, with wiring for single external cal gas
Z
Without enclosure with wiring for external dual calibration switches		

Note: Options X, Y, and Z are spare parts, which require a 24 VDC power supply. Specify serial number of existing transmitter.				
CE Compliance:		HStandard		C
CE compliants			Note 1: For C=C and B=1, 3, or 6, one cable gland PN 419-215 is included for X4(10) power/output cable; Second cable gland for use with 704668-12 RS232 cable must be ordered as a separate item.			Note 2: For C=C and B=2, 4, or 7, one cable gland PN 419-217 is included for Z4(10) power/output cable; Second cable gland for use with 7041262-12 RS232 cable must be ordered as a separate item.			Compensation/communication:			3
Background gas compensation only; IDM/Panaview user program			4
Atmospheric pressure and background gas compensation; IDM/Panaview user program				Wetted Material				1Wetted materials of 316 Stainless Steel and Viton O-Rings				2Wetted materials of Hastelloy C276 with Chemraz O-Rings				3Wetted materials of 316 stainless steel with Chemraz O-rings					Special					0					SNoneConsult factory						Note 1: Pressure compensation (XMO2 Option D= 4) required for 30% O2 or greater. Atmospheric pressurecompensation is recommended for transmitters used in ambient air monitoring applications.						Note 2: For a transmitter operating at 20.9% oxygen the typical changes in atmospheric pressure of±10 mmHg can result in changes of ±0.4% oxygen. Refer to the pressure effect specification.

XMO21H3

10(example part number)

XMO2 calibration
ABCDEFCalibration:XCAL
XMO2 calibration
Range of oxygen output:
10 to 1% oxygen
20 to 2% oxygen
30 to 5% oxygen
40 to 10% oxygen
50 to 21% oxygen
60 to 25% oxygen
70 to 50% oxygen
80 to 100% oxygen
A90 to 100% oxygenB
80 to 100% oxygen
SSpecial range				Compensation signal::		1Background gas compensation only; standard N2/CO2		2Atmospheric pressure compensation only; standard range 700 to 800 mmHg		3Background gas compensation only; special gas		4
Atmospheric pressure compensation only; special range		5Standard background gas N2/CO2 and atmospheric pressure compensation; 700 to 800 mmHg, zero based ranges only		7Calibrate at 0, 2, 10 and 21% O2 with N2 and 14% CO2 / 86% N2 background gases		SSpecial			Response:			1
Standard response (70 seconds)			2Response to meet EN50104 (45 seconds)			3
Fast response (15 seconds)				Temperature control setpoint				145°C temperature set point				260°C temperature set point

XCAL

5

1

11		 (example part number)

Panametrics, a Baker Hughes business, provides solutions in the toughest
applications and environments for moisture, oxygen, liquid and gas flow
measurement.
Experts in flare management, Panametrics technology also reduces flareemissions and optimizes performance.
With a reach that extends across the globe, Panametrics’ criticalmeasurement solutions and flare emissions management are enablingcustomers to drive efficiency and achieve carbon reduction targets acrosscritical industries including: Oil & Gas; Energy; Healthcare; Water andWastewater; Chemical Processing; Food & Beverage and many others.
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