Item # Promet I.S., Promet I.S. Process Moisture Analyzers on Michell Instruments, Inc. Michell Instruments, Inc. - Item # Promet I.S., Promet I.S. Process Moisture Analyzers
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Promet I.S. Process Moisture Analyzers
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Promet I.S. Process Moisture Analyzers are heavy duty, industrial hygrometer systems for measurement of high pressure, process gases and vaporized liquids on natural gas platforms and terminals, petrochemical plants and industrial gas manufacturing facilities. Promet I.S. combines the latest Michell moisture sensing technologies with sample conditioning system design engineering capabilities to provide a reliable and easy to operate, multi-channel on-line instrument for both flammable and non-flammable gases.

Promet I.S. Process Moisture Analyzers

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Promet I.S. Process Moisture Analyzers-2

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Sensor · Control Unit · Premium Sampling Systems

Sensor

Sensor Technology

Michell Ceramic Moisture Sensor

Sensor Version

Easidew PRO I.S.

Measurement Range

-100 to +20ºCdp
-148 to +68 ºF

Calibration Range

-100 to +20ºCdp
-148 to +68 ºF

Calibration

Traceable to British (NPL) and American (NIST) National Humidity Standards

Accuracy

Dew point: ±1ºC between -60 and +20ºCdp (±1.8ºF between -76 and +68ºFdp)
Moisture content: ±10 % of reading
Dew point: ±2ºC between -60.1 and -100ºCdp (±3.6ºF between -76.1 and -148ºFdp)

Resolution

0.1ºC between +20 and -100ºCdp (0.18ºF between +68 and -148ºFdp)

Analysis pressure

Up to 45 MPa
Up to 6526.7 psig

Operating Temperature

-40 to +60 ºC
-40 to 140 ºF

Sample Flow Rate

1 to 5 L/min
2.12 to 10.59 scfh

I.S. Certification

ATEX certified by EECS for use in hazardous areas to Ex II 1G EEx ia IIC T4
CSA certified IS Class I, Division 1, Groups A, B, C & D, T4
IECEx: Ex ia IIC T4
FM: IS/I/1/ABCD/T4 Ta=+60ºC - Ex90385; Entity; IP66

Optional Pressure Sensor1

0-69 barg
0-138 barg
0-1000.76 psig
0-2001.52 psig

Pressure Sensor Accuracy

±0.25% FS
1 Other Ranges Available


Control Unit

Display

Two line 6-digits LED, displaying moisture content / dew point (user toggle) and analysis pressure

Analog Outputs

Two 4-20 mA (max. load 500 Ω) User configured for parameter, unit and range

Digital Outputs

RS485 Modbus RTU

Display Mode

Moisture content (ppmv)
Moisture content in natural gas (ppmv, LBMMSCF, mg/m³)
Dew point (ºC or ºF)
Temperature (ºC or ºF)
Pressure (psig, barg)

Pressure Compensation

Fixed value (user programmed) or dynamic input from optional pressure sensor

Display Resolution

0.1ºCdp, 0.1ºFdp, 0.1-0.001 ppmv ideal gas (adjustable), 0.01 ppmv natural gas, 0.01 mg/m³, 0.01 LBMMSCF, 1 psig, 0.1 barg

Alarms

Four alarm relays. Control action and setpoint are user programmable
Two Form C contacts rated 10 A, 240 VAC or 8 A, 24 VDC. Non-inductive load
Two Form A contacts rated 5 A, 240 VAC or 4 A, 24 VDC. Non-inductive load

I.S. Barriers

Galvanic isolation type, integrated to Control Unit

Power Supply

10 to 72 VDC, 10 W max. power consumption
85 to 265 VAC, 50/60 Hz

Interconnection Cable

General instrument type, twisted pair, screened, single pair (two pairs with pressure sensor)

Enclosure

19" sub rack unit
Dimensions 132 x 483 x 256 mm (h x w x d) (5.2 x 19.02 x 10.08 in)
(100 mm (3.94 in) minimum clearance depth for cables and vents)

Operating Environment

Indoor, safe area, 0 to +50ºC (+32 to +122ºF), < 90% RH

Premium Sampling Systems

Enclosure

304 stainless steel (EN1.4301) enclosure; Option for complete enclosure in 316 stainless steel (EN1.4401); All fixtures stainless steel; Galvanized steel internal mounting plate; Open panel version available for indoor installation
Dimensions 800 x 600 x 300 mm (h x w x d) (31.5 x 23.62 x 11.81 in)

Enclosure Mounting

Stainless steel wall mounting brackets

Enclosure Ingress Protection

IP66

Enclosure Temperature Control

Heater/thermostat options for fixed set-point +20ºC (+68ºF) or adjustable set-point range 0 to control 50ºC (+32 to +122ºF)

Heater Power Supply

110/120 or 220/240/255 VAC, 50/60 Hz Power consumption 100 W max.

Operating Environment

Shaded position, on or off shore, -20 to +50ºC /-4 to +122ºF (-40 to +60ºC / -40 to 140ºF +max. transient)
Enclosure cooling option recommended for climatic ambient > +45ºC (113ºF)

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