XTC601 Binary Gas Analyzer

 Thermal Conductivity Technology in Safe or Hazardous Areas
A robust, linear and stable thermal conductivity analyzer for measurement of binary gas mixes such as air in hydrogen, nitrogen, argon, helium or carbon-dioxide. The sensor is housed in a rugged casing, making it suitable for a wide range of applications. The analyzer can be supplied explosion-proof and suitable for hazardous areas.

Product Features

  • Suitable for use in ATEX, IECEx, TC TR Ex & CCSAUS certified Hazardous Areas
  • Optional status LED’s following NAMUR standard
  • Compact and rugged design with an EExd enclosure and 4-20 mA output
  • Touch-screen display allows calibration or adjustment without the need for a hot works permit
  • Accuracy of better than ±2% full scale
  • IP66 rated enclosure
  • Low cost of ownership due to minimal maintenance
  • Typical ranges available: 0-5% up to 0-100% (others gas dependent)
  • Stability ±0.5% per month (of span)
XTC601 Binary Gas Analyzer

Technical Specifications

Measurement TechnologyThermal Conductivity sensor
Measured GasesAir, Ar, CH4, CO2, H2, He or N2
Gas RequirementsNon-condensing sample with particles <3μm
Measurement RangeSelectable from 0-5 up to 0-100%
50-100% up to 90-100%
Measurement Range (H2 & He)Selectable from 0-1% up to 0-100%
50-100% up to 99-100%*
Display Resolution0.1%
Display TypeBacklit LCD
Intrinsic Error (Accuracy) < ±2% of span**
Response Time (T90)Standard < 20 seconds**
Repeatability±0.2% of span
Linearity±1% span
Zero Stability±0.5% of span per month
Span Stability±0.5% of span per month
Sample Flow Rate100 to 500 ml/min (0.2 to 1.27 scfh)
Sample Flow Rate(Ex)270 to 330 ml/min (0.54 to 0.66 scfh))
Sample Flow Effect
(calibrated at 300 ml/min)
< 1% of span for flows:
100 to 500 ml/min
Sample PressureAnalyzers are callibrated at atmospheric pressure and must be operated with an atmospheric vent, unless otherwise stated
Maximum Safe Pressure4 barg (58 psig)
Sample Temperature5 to 45°C (+32 to +104°F) max
Sample Cell Temperature+50°C (+122°F)
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
Output RangesPrimary range is set to the calibrated range of the instrument
The second is user selectable
Alarms2 off single pole changeover (SPCO) relays (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 Temperature0 to 40°C (32 to 104°F)
Mechanical Specifications
Warm Up Time< 25 minutes
Stabilization Time5 minutes
Dimensions234 x 234 x 172mm (w x d x h)
Wetted Materials316 stainless steel, boroscillicate glass, platinum, (plus O-ring)
O-Ring MaterialsViton, Silicone or Ekraz
Gas Connection1/4” NPT FEMALE GP models, 1/8” NPT FEMALE Ex & GP2 models
Ingress ProtectionIP66, NEMA 4X
Hazardous Area Classification
Ex d IIB +H2 T6 Gb
Ex tb IIIC T85°C Db IP66
IECExEx d IIB +H2 T6 Gb
Ex tb IIIC T85°C Db IP66
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
CCSAUSClass I, Division 1, Groups B,C,D T6
TC TR Ex-Cert1Exd IIB+H2 T6 Gb
*Ranges 98-100% and 99-100% (for H2 and HE only) will require a flowing reference and selection of the 4-port model.
reference and selection of the 4-port model.
**The typical intrinsic error and response time will be as above. Certain gas combinations and/or ranges may have different specifications. Please consult Michell Instruments for specific cases. For example, CO2 / N2 would be < 50 seconds for T90.

Note: If the 4-port version is selected then a reference gas with a flow rate of 300ml/min is required

Related Products

XTC601 for Hydrogen Cooled Generators XTC601 for Hydrogen Cooled Generators
A robust, linear and stable thermal conductivity analyzer for measuring the binary gas mixes present during the operation and maintenance of hydrogen cooled electricity generators.
XTP601 XTP601
A robust, linear and stable oxygen analyzer for measurements in gases such as hydrogen, nitrogen or air for Safe or Hazardous Areas
Optidew Optidew
The Optidew 401 and Optidew 501 are chilled mirror hygrometers, designed as successors to the original Optidew instruments. The Optidew 401 is a bench top model, replacing the Optidew Vision. The Optidew 501 is wall mounted to replace the Optidew transmitter, but offer an option to have the same touch-screen interface as the Optidew 401 for easy local operation. There is also a transmitter version of the Optidew 501 without a display
S8000 RS High-Precision Chilled Mirror Hygrometer S8000 RS
Our flagship chilled mirror hygrometer, capable of measuring as low as -90°C dew point in a compact, lightweight package. The sensor head is optimised for fast response to low moisture levels and features the RRS system for high sensitivity and a dew-point accuracy of ±0.1°C