The Liquidew EExd offers complete trace moisture measurement, applying a robust sensor technology to provide direct, accurate, on-line measurements for moisture dissolved in process liquids. Purpose designed explosion-proof analyzer provides single-or dual-channel measurements, convenient display interface and easy installation for new projects and retrofits to existing plants.


Product Features


  • EExd flameproof certified - IECEx, ATEX, CCSAUS and TC TR Ex
  • Complete hazardous area installation
  • Single or dual-channel measurements
  • 0.001 ppmW to saturation range capacity
  • Pre-programmed and user-entered saturation concentration values
  • Remote global access options


Technical Specification

Main Unit
Measurement Parameters
Channel Configuration Single and dual channel
Moisture Content ppmw
Temperature °C and °F
Water Dew Point °C and °F
Sample Flow Rate Status indication: LOW-OK-HIGH (<0.1 to >0.3 Nl/min)
Sensor Technology
Moisture Sensor Technology Michell Ceramic Moisture Sensor
Calibration Range -100°Cdp to +20°Cdp (-148 to +68°F dew point)
Measurement Range -120°Cdp to +30°Cdp (0.001 ppmW to saturation) (-184 to +86°Fdp)
Accuracy Dew Point: ±1°C (±1.8°F) between –59.9 & +20°Cdp (–75.8 & +68°Fdp)
±2°C (±3.6°F) between –60 & –100°Cdp (–76 & –148°Fdp)
Moisture content: ±10% of reading
±20% of reading
Analysis Temperature: ±0.2°C (±0.36°F)
Resolution 0.1°C between +20°Cdp and -80°Cdp
1°C between -80°Cdp and -100°Cdp
Temperature coefficient Algorithm compensation (-20 to +50°C)
Operating Pressure Max. 80 barg (1160 psig)
Sample Flow Up to 1 l/min (0.1 to 0.2) recommended
HMI
Keypad/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 temperature 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
Enclosure
Type Flameproof EExd
Construction Cast copper-free aluminium (IP66/NEMA 4)
Finish Chromate primer, polyester P9010 powder coated (black) — meets BS3900
General
Sample Connections 1/8” NPT (ATEX / IECEx) or 1/4” NPT (CSA) (female)
Weight 21kg (46.3lbs)
Operating Supply Voltage 90 to 260 V AC, 47/63 Hz, 180 W — main unit
Operating environment Indoor/outdoor: –20 to +60°C (–4 to +140°F); max 95% RH
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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