XTP601 Series

Oxygen Analyzer for Safe or Hazardous Areas
A robust, linear and stable oxygen analyzer for measurements in gases such as hydrogen, nitrogen, biogas, 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

  • Compact and rugged design with an EExd enclosure with Modbus RTU over RS485 protocol and 2 off 4–20 mA outputs
  • ATEX, IECEx, cCSAus TC, TR & Ex Hazardous Area certified
  • 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
  • Increased protection against contamination due to cell design
  • Low cost of ownership due to minimal maintenance and no consumeable parts
  • Ranges available: 0–0.5% up to 0–50% & 20, 80 or 90–100%

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 Effect
(calibrated at 300 ml/min)
< 1% of span for flows: 100 to 600 ml/min
Sample Pressure0 to 3 barg inlet with atmospheric vent
Sample Temperature0 to +55°C max (+45°C for standard cell)
Sample Cell TemperatureStandard +50°C (Optional +55°C and +60°C)
Background GasUnit can be calibrated in a user-defined background gas to increase the accuracy
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 (isolated)
Output RangesPrimary range is set to the calibrated range of the instrument
The second is user selectable
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
Operating Conditions
Ambient TemperatureDependent on o-ring selection:
Silicon: –40°C to +55°C
Viton®: –15°C to +55°C
Ekraz: –10°C to +55°C
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 Connection1/4” NPT, 1/4” tube or 6mm tube
Ingress ProtectionIP66, NEMA 4X
Hazardous Area Classification
Ex tb IIIC T137°C Db IP66
IECExEx d IIB +H2 T3 Gb
Ex tb IIIC T137°C Db IP66
CCSAUSClass I, Division 1, Groups B,C,D, T3C
Ex tb IIIC T137°C Db IP66
TC TR1 Ex d IIB + H2 T3 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”.

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