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Michell XTC501 Thermal Conductivity Analyzer

Updated:2025-03-13

Brand: PST/Michell
Model: XTC501
Description: A lightweight and compact binary gas analyzer for measuring gas mixtures – such as air in argon or carbon dioxide in air. Suitable for installation in safe areas the XTC501 has a tough, IP55-rated hou
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Product Details

Michell XTC501 Thermal Conductivity Analyzer Description：

User's Manual Datasheet

Hydrogen, Binary Gas and Gas Mixtures Measurement

Features

Compact, lightweight and easy to install

Intuitive user interface

Tough IP55 housing

Low cost of ownership due to minimal maintenance

Measurement ranges from 0 to 5% up to 0...100 % and 50/80/90...100 %

Accuracy of better than ±1 % full scale

2 x 4...20 mA outputs and Modbus RTU over RS485 as standard

A lightweight and compact binary gas analyzer for measuring gas mixtures – such as air in argon or carbon dioxide in air. Suitable for installation in safe areas the XTC501 has a tough, IP55-rated housing. Available with an optional display and 4-button interface, the analyzer is easy to install, configure and operate.

Because the thermal conductivity sensor has no consumable parts and will last the lifetime of the analyzer, XTC501 has a competitively low lifetime cost of ownership and is simple to maintain.

Specifications

Performance
Measurement Technology	Thermal Conductivity sensor
Measured Gases	Air, Ar, CH₄, CO₂, H₂, He, or N₂
Background Gas	Analyzer is calibrated in the background gas of the process.
Gas Requirements	Non-condensing sample with particles <3μm
Measurement Range	Selectable from 0...1 % up to 0...100 %, 50...100 % up to 99...100 % (see order code sheets)
Display Resolution	0.0001 0.1 % for XTC ranges > 10 %
Display Type	Backlit LCD (not on 501-GP2 model)
Intrinsic Error (Accuracy)	< ± % of range or ±0.05 % H₂ or He, whichever is greater < ±2 % of range (for all other gas mixtures and ranges)
Response Time (T90)	< 50 seconds for most gas combinations < 20 seconds H₂ or He
Repeatability	±0.2 % of range
Linearity	±1 % of range
Zero Stability	±0.5 % of range per month
Range Stability	±0.5 % of range per month
Sample Flow Rate	100...500 ml/min (0.2...1.27 scfh)
Sample Flow Effect (Calibrated at 300 ml/min)	< 1 % of range for flows within stated range
Sample Pressure	A fixed pressure of 0.75 to 1.5 Bar A (10 to 20 psi A) (unit must be calibrated at the same pressure as sample)
Maximum Safe Pressure	2 barg (29 psig)
Sample Temperature	A constant temperature of 5 to 45 °C (+41...+113 °F)
Sample Cell Temperature	+50 °C (+122 °F)
Electrical Specifications
Analog Inputs	1 off mA input for an external sensor (can be displayed on the screen) 1 off mA input to act as an active compensation for the process conditions
Analog Outputs	2 off 4...20 mA outputs (powered with 24V excitation voltage)
Output Ranges	Primary range is set to the calibrated range of the instrument. The second is user-selectable
Alarms	2 off single pole changeover relays for concentration (250 V, 5 A max)
Datalogging	Digital communications can be used to log the output from the analyzer on an external device
Digital Communications	Modbus RTU over RS485 Protocol
Power Supply	24 V DC; 1.0 A max
Operating Conditions
Ambient Temperature	+5...+50 °C (+41 °F...+122 °F)
Mechanical Specifications
Warm-Up Time	< 25 minutes (at 20 °C ambient)
Stabilization Time	5 minutes
Wetted Materials	316 stainless steel, borosilicate glass, platinum, (plus O-ring)
Dimensions (w x d x h)	260 x 180 x 128 mm
Weight	Approx. 3 kg
O-Ring Materials	Viton
Gas Connection	1/8” bulkhead standard
Ingress Protection	IP55