XZR400 Series User’s Manual
Michell Instruments
67
APPENDIX A
Appendix A
Technical Specifi cations
Sensor Type
Measurement Principle
Zirconium Oxide Sensor with Metallic Sealed Reference
and S Type thermocoupe
Performance
Gas
Clean, dry, oil free with particles less than 3
μ
m
Measurement Range
0.1 ppm up to 25% O
2
Extended ranges available up to 0 to 100% O
2
Lowest detectable limit
(LDL)
0.1ppm(v) O
2
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
fi
tted as an option. Please, see a separate
datasheet for full speci
fi
cations.
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 1,000
Ω
Self-Diagnostics
Via HMI
Output Ranges
0.0 ppm to 1ppm up to 0 to 25% O
2
Extended ranges available up to 0 to 100% O
2
Alarms
2 threshold alarms, freely con
fi
gurable
1 general fault alarm including
fl
ow alarm
1
fl
ow alarm (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, 47/63 Hz
Power Consumption
50 VA
Operating Conditions
Ambient Temperature
Range
0 to +55°C (+32 to +131°F)
