Product Description

Promet EExd Process Moisture Analyzers are hazardous-area rated industrial hygrometer systems for measurement of water vapor content in low and high pressure process gases on natural gas platforms and terminals as well as in petrochemical plants and industrial manufacturing facilities. The Promet EExd is installed directly in the hazardous area, simplifying site installation and retrofits. Promet EExd combines the latest Michell moisture sensing technologies with sample conditioning systems designed to provide a reliable and easy-to-operate, multi-channel, on-line instrument for moisture measurement in flammable gases.

Product Features

  • EExd flameproof certified – IECEx, ATEX, CCSAUS and TC TR Ex
  • Complete hazardous area installation
  • Single or dual-channel measurements
  • Moisture content, dew point and pressure
  • Calibration traceable to NPL (UK) and NIST (US)
  • Range -120 to +30°C dew point (-184 to +86°F)
    0.001 to 30,000 ppmv
  • Remote global access options
  • Sour gas compatible
  • Field calibration maintenance

Technical Specification

Channel Configurations Single and two channel
Moisture Parameters Dew point °C and °F
Moisture Content Automatic pressure compensated conversions: ppmV for natural gas and ideal gas lb/MMscf and mg/m3 for natural gas
Dew point at a pressure input by the user for natural gas and ideal gas
Calculations for natural gas moisture content based on either IS0 18453 or IGT#8 to customer order preference
Analysis Pressure barg, MPa and psig
Sensor Technology Michell Ceramic Moisture Sensor
Measurement Range -120°Cdp to +30°Cdp (-184 to +86°Fdp)
1 ppbv to 30,000 ppmv
0 to 250 barg (0 to 3625 psig)
Calibration Range -100°C to +20°Cdp (-148°Fdp to +68°Fdp)
10 ppbv to 23,000 ppmv
Accuracy Dew point: ±1°C between -59.9 & +20°Cdp (±1.8°F between -75.8 & 68°Fdp)
Moisture content: ±10% of reading
Dew point: ±2°C between -60 & -100°Cdp (±3.6°F between -76 & -148°Fdp)
Moisture content: ±20% of reading
Analysis Pressure: ±0.25% FS
Measured Resolution 0.1°C (0.18°F): -80 to +20°Cdp (-112 to +68°F)
1°C (1.8°F): -100 to -80°Cdp (-148 to -112°F)
Displayed Resolution Dew point: 0.1°C (0.18°F)
Moisture content: autoscale, 5 digits
MPa and barg: 0.1 / psig: 1.0
Resolution 0.1°C between +20°Cdp and -80°Cdp (0.18°F between +68 and -112°Fdp)
1°C between -80°Cdp & -100°Cdp (1.8°F between -112 & -148°Fdp)
Temperature Coefficient Algorithm compensation (-20 to +50°C)
HMI: Keyboard Interface Capacitive touch-screen through glass
Display Vacuum fluorescent
Datalogging A rolling maximum of 150 data logs is available
Each log records time, date, moisture and pressure values for each channel
5 minutes minimum and 60 minutes maximum logging intervals can be set by the user
Communications and Output Two non-isolated 4-20 mA per measurement channel.
500 Ω maximum load. Range and parameter settable by user
Modbus RTU @ 9600 baud-rate
Alarms: two volt free contacts per channel; one process value and one instrument status. Also available via Modbus communications
Main Unit Enclosure Internal temperature control for condensation protection and stable analysis conditions
Type Explosion proof NEC / Flameproof EExd
Construction Cast copper-free aluminum
Finish Chromate primer, Polyester P9010 powder coated (black). Meets BS3900
Operating Pressure Max. 138 barg (2000 psig)
Sample Connections 1/8” NPT (ATEX / IECEx) or 1/4” NPT (CSA)(female)
Sample Flow Rate 0.5 to 5 l/min (1 to 10.5 scfh)
Sample Flow Alarm Optional
Power Supply 90 to 260 V AC, 50/60 Hz, 180 W Main Unit
Operating environment Indoor/Outdoor -20 to +60°C (-4 to +140°F)
Max 95%RH. Shaded location
Certification
Hazardous Area Certification ATEX: II 2G Ex d IIB + H2 Gb
IECEx: Ex d IIB + H2 Gb
Tamb -40°C to +45°C T4
Tamb -40°C to +60°C T3
cSAus: Class I, Division 1, Group B, C, & D T4
*TC TR: 1Ex d IIB+H2 T4, T3 Gb
Pattern Approval GOST-R, GOST-K

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Office # 06, Rose-1 Plaza

I-8 Markaz, Islamabad

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9 am – 5 pm

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info@tetracon.com.pk