current position:home page>Products>Analysis Instrument>PST>

Oxygen Analyzer for Gas Purity Measurements - Michell XZR400

Updated:2025-03-13

Brand: PST/Michell
Model: XZR400
Description: The XZR400 zirconium oxide gas purity analyzer from Michell Instruments is designed to measure oxygen as an impurity in inert gases such as nitrogen, carbon dioxide, helium and argon.
Data download

Feedback
WeChat

QQ

Online Service

Product Details

Oxygen Analyzer for Gas Purity Measurements - Michell XZR400 Description：

User's Manual Datasheet

Fast Responding With Metallic Sealed Reference Sensor

Features

Fast response time

Simple and easy operation

Low maintenance and cost of ownership

No need for reference air

Barometric pressure compensation

Multiple Outputs available from 4-20 mA, RS485 Modbus RTU and RS232

Rack, wall-mount, bench-mount, and transportable versions available

Optional built-in Easidew Transmitter with rack-mount version

The XZR400 zirconium oxide gas purity analyzer from Michell Instruments is designed to measure oxygen as an impurity in inert gases such as nitrogen, carbon dioxide, helium and argon.

A range of trace oxygen analyzers utilizing Michell's Metallic Sealed Reference Sensor (MSRS) technology. Designed to measure O2 as an impurity in pure inert gases such as N2, CO2, He, Ar and even Kr. The XZR400 can also be used for cylinder filling and other applications where a precise measurement of oxygen is required. There are three different chassis to choose from and various options including pumps, flow alarms and digital communications to match customer needs. The rack mount unit can be supplied with an Easidew or SF82 moisture transmitter fitted inside the case.

Specifications

Sensor Type
Measurement Principle	Zirconium Oxide Sensor with Metallic Sealed Reference and S Type thermocouple
Performance
Gas	Clean, dry, oil free with particles less than 3μm
Measurement Range	0.1 ppm up to 25% O2 Extended ranges available up to 0 to 100% O2
Lowest detectable limit (LDL)	0.1ppm(v) O2
Accuracy (Intrinsic Error)	Less than 2% of reading
Response Time	<11 seconds
Repeatability	±0.1% of reading
Stability	1% per month
Linearity	Better than ±1%
Drift	<1% of reading per week
Sample Flow Rate	1 to 3 Nl/h with built-in fast loop
Maximum Sample Pressure	2 barg(29 psig)
Maximum Sample Temperature	+100°C (+212°F)
Atmospheric Pressure Compensation	Built-in as standard
Optional sensor
Moisture sensor	Easidew sensor can be fitted as an option. Please, see a separate datasheet for full specifications.
Measurement range	-100 °C to + 20 °C
Sample Flow rate	60 to 300 Nl/hour
Outputs
Analog Output	0, 1 or 2 off 0/4-20 mA Linear with Galvanic Isolation output
Digital Communications Output	Modbus RTU over RS485 protocol (Standard on XZR400A1) RS232 output (optional)
Output Load	Over 1000 Ω
Self-diagnostics	Via HMI
Output Ranges	0.0 ppm to 1ppm up to 0 to 25% O2 Extended ranges available up to 0 to 100% O2
Alarms	2 threshold alarms, freely configurable 1 general fault alarm including flow alarm 1 flowalarm (optional)
Display Resolution	0.01 ppm between 0.1 ppm and 10 ppm 0.1 ppm between 10 ppm and 10,000 ppm 0.01% between 1 to 10% 0.1% between 10 to 25%
Power Supply	90 to 264 V AC, 47/63Hz
Power Consumption	50 VA
Operating Conditions
Ambient Temperature Range	0 to +55°C (+32 to +131°F)
Sensor Temperature	Optimized @ +634°C
Operating Humidity	5 to 90% RH without condensation