Cermet II User’s Manual
Michell Instruments 27
APPENDIX A
Appendix A Technical Specifi cations
Monitor
Display
5 digit LED
7-segment digit, 14.2 mm(0.56”)
Display Color Red
Temperature and Alarm
Indicators
Red LED’s
Performance Specifi cations
Measurement Ranges -19999 to 99999
Accuracy
Dew point ±0.5°C (±1.0°F)
ppm
V
, lbs/MMSCF and g/m
3
±1% of reading
Pressure ±0.5% full-scale reading
Electrical Specifi cations
Dew-Point Input Channel Digital signal from Michell dew-point transmitter
Pressure Input Channel
(optional)
2-wire pressure transducer, 4-20 mA (loop-powered)
Output Scaled Range
Dew point: -100 to +20°C
Moisture content in gas: 0 to 9999 ppm
V
, 0 to 1000 lbs/MMSCF
and g/m
3
Non-standard available upon request
Re-transmittion Output
Signals
Standard: 4-20 mA
Optional: 0-20 mA (max load 500 Ω) or 0 - 10 V optional (min
load 5 K Ω)
User scaleable
Alarm Relays
Standard: Two relays SP1 and SP2, fully user programmable
Form C contacts rated 10 A, 240 V AC or 8 A, 24 V DC
Non-inductive load
Optional: Two extra relays, SP3 and SP4, fully user programmable
Form A contacts rated 5 A, 240 V AC or 5 A, 30 V DC
Non-inductive load
Power Connection 2m (6.56ft), 3 wire
Power Supply
Standard: 85 to 265 V AC, 50/60 Hz or 95 to 370 V DC
Optional: 18 to 36 V AC or 9 to 60 V DC
Power Consumption 10 W max
Transmitter Cable
Copper braid screened cable, 4 core 7/0.2 (0.22mm²), stranded,
tinned copper conductors, PVC, insulated, Melinex taped, black
PVC outer
Fitted with transmitter connector and terminations for monitor
Max length 1000m (3280ft)
Operating Specifi cations
Operating Mode Continous
Operating Temperature 0 to +50°C (+32 to +122°F)
Mechanical Specifi cations
Ingress Protection
Standard: IP54 / NEMA 12 (at front),
Optional: Extra protection cover IP66 / NEMA 4
Dimensions 96 x 48 x 142mm (3.8 x 1.9 x 5.6")
Mounting Panel mounting (1/8 DIN cut out 92 x 45mm (3.62 x 1.77”))
Weight 0.6kg (1.32lbs)
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