Technical Specifi Cations - Michell Instruments Promet I.S. User Manual

APPENDIX A
Appendix A Technical Specifi cations
Sensors
Sensor Technology
Sensor Version
Measurement Range
Calibration Range
Calibration
Accuracy
Resolution
Analysis Pressure
Operating Temperature
Sample Flow Rate
Optional Pressure Sensor
Control Unit
Display
Analog Output
Digital Output
Display Mode
Pressure Compensation
Display Resolution
Alarms
I.S. Barriers
Power Supply
Operating Environment
Interconnection Cable
Enclosure
46
Michell Ceramic Moisture Sensor
Easidew PRO I.S.
-100 to +20°Cdp (-148 to +68°Fdp)
-100 to +20°Cdp (-148 to +68°Fdp)
Traceable to British (NPL) and American (NIST) National Humidity
Standards
Dew point: ±1°C between –60 and +20°Cdp (-76 and +68°Fdp)
Moisture content: ±10% of reading
Dew point: ±2°C between –60.1 and -100°Cdp (-76.18 and -148°Fdp)
0.1°C between +20 and -100°Cdp (+68 and-148°Fdp)
Up to 45 MPa (450 barg / 5801 psig)
-40 to +60°C (-40 to +140°F)
1 to 5 Nl/min (2.1 to 10.6 scfh)
0–138 barg (other ranges available) Accuracy: ±0.25% FS
Two line 6-digits LED, displaying moisture content / dew point (user
toggle) and analysis pressure
Two 4-20 mA (max load 500 Ω)
User confi gured for parameter, unit and range
RS485 Modbus RTU
Moisture content (ppm
Moisture content in natural gas (ppm
Dew point (°C or °F)
Pressure (psig, barg)
Fixed value (user programmed) or dynamic input from optional
pressure sensor
0.1°Cdp, 0.1°Fdp, 0.1-0.001 ppm
natural gas, 0.01 mg/m³, 0.01 lb/MMscf, 1 psig, 0.1 barg
Four alarm relays
Control action and set-point are user-programmable
Two Form C contacts rated 10 A, 240 V AC or 8 A, 24 V DC Non-
inductive load
Two Form A contacts rated 5 A, 240 V AC or 4 A 24 V DC Non-
inductive load
Galvanic isolation type, integrated to Control Unit
85 to 265 V AC, 47/63 Hz or 10 to 72 V DC
10 W max power consumption
Indoor, safe area, 0 to +50°C (+32 to +122°F) < 90% RH
General instrument type, twisted pair, screened, single pair (two pairs
with pressure sensor)
19" sub rack unit
Dimensions 132 x 483 x 375mm (5 x 19 x 14.75") (h x w x d)
(100mm (4") minimum rear clearance depth for cables and vents)
Promet I.S. User's Manual
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, lb/MMscf, mg/m³)
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ideal gas (adjustable), 0.01 ppm
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97221 Issue 5, March 2017
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