A robust, linear and stable oxygen analyzer for measurements in gases such as hydrogen, nitrogen or carbon dioxide. The sensor is housed in an IP66 rugged casing, making it suitable for a wide range of applications. When supplied with flame arrestors, the analyzer becomes explosion-proof and certified for use in hazardous areas.

Product Features

  • General purpose or ATEX, IECEx, CCSAUS, TC, TR & Ex hazardous area certified models
  • Ranges available: 0–0.5% up to 0–50% & 20, 80 or 90–100%
  • Touch-screen display allows calibration or adjustment without the need for a hot works permit
  • Intrinsic error (accuracy) is better than 1% full scale
  • Zero span stability better than 0.25% of span per month
  • Outputs include RS485 and two 4-20mA (following NAMUR NE 44 standard)
  • Low cost of ownership due to minimal maintenance and no consumable parts

Technical Specification

Measurement TechnologyThermo-paramagnetic oxygen sensor
GasProcess and non-condensing sample with particles <3µm
Measurement RangeSelectable from 0–0.5% up to 0-50% and 20, 80 or 90–100%
Display Resolution0.01% for suppressed zero ranges
Display TypeBacklit LCD
Accuracy Excluding Suppressed Zero Ranges<±1% of span or ±0.02% O2 whichever is greater
Accuracy For Suppressed Zero Ranges (80/90 - 100%)< 0.2% O2
Response Time (T90) with High Speed Response (HSR) Enabled< 15 seconds
Repeatability±0.2% of span or 0.01% O2 whichever is greater
Linearity±0.5% of span or 0.05% O2 whichever is greater
Zero Stability±0.25% of span per month
Span Stability±0.25% of span per month
Sample Flow Rate100 to 600 ml/min
Sample Flow EffectGP1 and GP3: 100 to 500 ml/min (0.2 to 1.06 scfh)
EX1, EX3 and GP2: 270 to 330 ml/min (0.2 to 1.06 scfh)
Sample Pressure0.75 to 5 BarA
Sample Temperature5 to +55°C max (+45°C for standard cell)
Sample Cell TemperatureStandard +50°C (Optional +55°C and +60°C) for ranges 0-0.5% up to 0-50% only
Background GasAnalyzer is calibrated in the background gas of the process. Standard gases are: N2, CO2, CH4, H2 & Biogas. Others available on request
Electrical Specifications
Analog Inputs2 off 4-20 mA inputs
One for an external sensor that can be displayed on the screen
One to act as an active compensation for the process conditions
Analog Outputs2 off 4-20 mA outputs (powered with 24V excitation voltage)
Output RangesPrimary range is set to the calibrated range of the instrument
The second is user selectable 0-100%
Alarms2 off single pole changeover (SPCO) relays for O2 concentration (250 V, 5 A max)
DataloggingThe user can use the digital communications to log the output from the analyzer
The unit will store 40 alarm points and the min/max O2 concentrations with date and time stamp
Digital CommunicationsMODBUS RTU over RS485 Protocol
Power Supply24 V DC; 1.5 A max
Cable entriesAnalyzer is supplied with 3 x M20 cable entries. Cable glands, conduit entries and blanking plugs are available as accessories
Operating Conditions
Ambient Temperature5 to +55°C
Atmopheric pressure750mbar to 1250mbar
Mechanical Specifications
Warm Up Time<25 minutes
Stabilization Time5 minutes
Dimensions234 x 234 x 172mm (w x d x h)
Wetted Materials316 & 430F stainless steel, boroscillicate glass, platinum, 3M 2216, plus O-ring
O-Ring MaterialsViton, Silicone or Ekraz
Gas ConnectionEX1, EX3 & GP2: 1/8” NPT (female)
GP1 and GP3: 1/4” NPT (female)
Ingress ProtectionIP66, NEMA 4X
Hazardous Area Classification
Ex tb IIIC T85°C Db IP66
IECExEx d IIB+H2 T6 Gb
Ex tb IIIC T85°C Db IP66
CCSAUSClass I, Division 1, Groups B,C,D, T6
Ex tb IIIC T85°C Db IP66
TC TR1 Ex d IIB+H2 T6 Gb
Temperature Ranges for ATEX and IECEx as per O-ring TypeSilicon: Ta = -40°C to +55°C
Viton®: Ta = -15°C to +55°C
Ekraz: Ta = -10°C to +55°C

The XTP601 process oxygen analyzer meets or exceeds all relevant clauses in BS EN 50104 : 2010
“Electrical apparatus for the detection and measurement of oxygen”.

Related Products