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Process Moisture Analyzer - Michell Promet I.S

Updated:2023-10-13

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  • Brand: PST/Michell
  • Model: Promet I.S
  • Description: 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, petro
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Product Details

Process Moisture Analyzer - Michell Promet I.S Description:

Product Manual Datasheet

Multi-Channel Moisture Measurement in Process Gases

Features

Simple, cost-efficient operation and low maintenance

Immune to chemical attack from H2S, mercaptans and other sulphides

Protected against glycol or other liquid contaminants

Accurate direct dew-point measurement at process pressure up to 45 MPa (450 barg/6526.7 psig)

Moisture range from ambient to ppb level with exhaustive list of hygrometric units, including key parameters of natural gas

Three 4...20 mA configurable outputs and digital Modbus RTU-based communication

Assured calibration integrity traceable to NPL (UK) and NIST (USA)

User programmable or real-time active pressure compensation for moisture content calculation

Multi-channel with up to 4 independent measurement channels

Customer configurable ES70 sample systems

Optional, highly reliable and cost-effective 2-wire, loop-powered O2 transmitter

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 Michell’s proven Ceramic Metal-Oxide Moisture Sensor with ES70 sample conditioning systems to provide a reliable and easy to operate, multi-channel on-line instrument for both flammable and non-flammable gases. Optional Oxygen Electrochemical sensors offer additional capability for percentage and ppmV O2 measurements.

Single or multichannel configurations are available. The Control Unit in the multi-channel format can also include moisture in liquid analysis or oxygen measurement function by combining with the Liquidew I.S. Moisture in Liquid Analyzer or the Minox-i O2 transmitter

Specifications

Sensors
Sensor Technology Michell Ceramic Metal-Oxide Moisture Sensor
Sensor Version Easidew PRO I.S.
Measurement Range -100...+20°C (-148...+68 °F) dew point
Calibration Range -100...+20°C (-148...+68 °F) dew point
Calibration Traceable to British (NPL) and American (NIST) National Humidity Standards
Accuracy Dew point: ±1 °C (1.8 °F) between -60 and +20 °C (-76 and +68 °F) dp
Moisture content: ±10 % of reading
Dew point: ±2 °C (3.6 °F) between -60.1 and -100 °C (-76.18 and -148 °F) dp
Resolution 0.1 °C (0.18 °F) between +20 and -100 °C (+68 and -148 °F) dp
Analysis Pressure Up to 45 MPa (450 barg/6526.7 psig)
Operating Temperature -40...+60 °C (-40...+140 °F)
Sample Flow Rate 1...5 l/min
Optional Pressure Sensor 0...138 barg (0...2001 psig) (other ranges available)
Accuracy: ±0.25 % FS
Certification
Hazardous Area Certification ATEX/UKCA: II 1 G Ex ia IIC T4 Ga (-20°C = Ta = +70°C)
IECEx: Ex ia IIC T4 Ga (-20 °C...+70 °C)
TR CU: 0Ex ia IIC T4 Ga (-20 °C...+70 °C)
cQPSus: IS, Class I, Division 1, Groups A, B, C & D, T4
Class I, Zone 0, AEx ia IIC T4 Ga, Ex ia IIC T4 Ga
Tamb +70°C
Pattern Approval GOST-R, GOST-K
Control Unit
Display 2.8” color touch screen LCD, displaying moisture content / dew point or O2 and analysis pressure
Analog Output Three 4...20 mA (max load 500 Ω)
user-definable outputs
Digital Output RS485 Modbus RTU
Display Mode Moisture content (ppmV)
Moisture content in natural gas (ppmV, lb/MMSCF, mg/m3)
Dew point (°C or °F)
Temperature (°C or °F)
Pressure (psig, barg)
% or ppmV O2
Pressure Compensation Fixed value (user programmed) or dynamic input from optional pressure sensor
Display Resolution 0.1°Cdp, 0.1°Fdp, 0.1 - 0.001 ppmV ideal gas (adjustable), 0.01 ppmV natural gas, 0.01 mg/m3,
0.01 lb/MMSCF, 1 psig, 0.1 barg
0.01 %/0.5 ppmV O2
Alarms Four alarm relays. Control action and setpoint are user programmable
Two Form C contacts rated 30 V DC, 5 A. Non-inductive load
Two Form A contacts rated 30 V DC, 5 A. Non-inductive load
I.S. Barriers Galvanic isolation type, integrated to Control Unit
Power Supply 85...265 V AC, 50/60Hz or 18...28 V DC, 30 V A max power consumption
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 375 mm (5.2 x 19.01 x 14.76”) (h x w x d) (100 mm/4” min. clearance depth for cables and vents)
Operating Environment Indoor, safe area, 0...+50 °C (32...+122 °F), <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
Galvanised steel internal mounting plate
Open panel version available for indoor installation
Dimensions 800 x 600 x 300mm (31.5 x 23.62 x 11.81”) (h x w x d)
Enclosure Mounting Stainless steel wall mounting brackets
Enclosure Ingress Protection IP66
Enclosure Temperature Control Heater/thermostat options for fixed set-point +20 °C (+68 °F) or
adjustable set-point range 0 to control 50 °C (32 to control 122 °F)
Heater Power Supply 110/120 or 220/240/255 V AC, 47/63 Hz
Power consumption 100 W max
Operating Environment Shaded position, on or off shore, -20...+50 °C (-4...+122 °F) (-40...+60 °C/-40...+140 °F max. transient)
Enclosure cooling option recommended for climatic ambient > +45 °C (113 °F)

Suitable Applications

Natural gas production and processing

Pipeline drying

Offshore export pipeline natural gas

Transmission pipeline monitoring

Fiscal metering of gas

Gas storage facilities

Hydrogen production, storage and transportation including natural gas injection

LNG production processing and receiving terminals

Gas generation industries

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