Michell Instruments XZR500ST, User Manual

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XZR500 User’s Manual
6 97137 Issue 8, April 2017
INTRODUCTION
1.3 Speci fi cations
1.3.1 General
• Microcontroller: Motorola 68HC12
• Inlet converter: analog, 16 bits resolution, 0.0015% linearity error,
with fi lter and embedded calibrator
• Outlet converter: analog, 12 bits resolution, ±1 bit linearity error
• Display resolution: 0.1% O
2
(or 0.01 % on request and during
calibration)
• The 3-button keypad and digital interface allow:
Reading
Continuous display of the oxygen concentration to one decimal place (option
of second dp). Other parameters available through the HMI are Furnace
Temperature, Thermocouple Junction Temperature, MSRS Voltage and
Ambient Pressure (in mbars), if the optional pressure sensor is ordered.
Con fi guration
Con fi guring of the test gas value, activation direction of the alarms (high
or low) and hysteresis level, the fail safe value (output value sent by the
electronics in case of general failure), language (English, French or Italian),
the output analog signal, the associated scale and the factory settings. (For
other parameters see speci
fi c Appendix.)
• Output signal: 0-20 mA or 4-20 mA (user-selectable) galvanic isolation
(500 V), linear and programmable, output range can be selected between
0.01% and 25% O
2
• Output impedance: > 1 k Ω
• Alarms: contacts are normally closed, dry and potential-free, the cutting
power is max. 10 W (up to 100 V or up to 0.5 A):
1. General failure alarm warning of furnace under temperature (20°C
below the instruction), thermocouple separation, problems with
RAM backup after a re-set or adjustment error
2. Threshold alarms, with programmable activation direction and
hysteresis
• Consumption: 110 VA
• Ingress and impact protection:
Electronic enclosure: IP52 and IK05
Probe: IP53 and IK05
• Storage temperature: between -10 and +70°C