Liquidew EExd

 Moisture in Liquids Analyzer
Liquidew EExd is a purpose designed, flameproof certified solution to on-line continuous moisture measurement for petrochemical liquid applications. Liquidew EExd is wholly installed in the hazardous area, so simplifying site installation and retrofits. Moisture content is determined in part per million by weight (ppmW) through Henry's Law from the measured water dew-point temperature and liquid temperature.

The instrument uses an extensive list of saturation concentration data pre-programmed for a variety of petrochemical liquids, with provision for easy entry of 'custom' characteristics data by the user. Best practice in sample handling and conditioning is achieved by the Premium Sampling Systems to complete the comprehensive factory built analyzer package, ready for installation next to the sample point on the process plant.




Caractéristiques produits

  • EExd flameproof certified - ATEX and CSA
  • 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
Liquidew EExd

Spécifications techniques

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-Good-High (<0.1 to >0.3 l/min)
Sensor Technology
Moisture Sensor Technology Michell Ceramic Moisture Sensor
Calibration Range -100°C dp to +20°C dp
Measurement Range -120°C dp to +30°C dp (0.001 ppmw to saturation)
Accuracy Dew point: ±1°C between -59.9 & +20°C dp
Moisture content: ±10 % of reading
Dew point: ±2°C between -60 & -100°C dp
Moisture content: ±20 % of reading
Analysis temperature: Accuracy ±0.2°C
Resolution 0.1°C between +20°C dp and -80°C dp
1°C between -80°C dp and -100°C dp
Temperature coeffi cient Algorithm compensation
Operating Pressure Max. 50 barg
Sample Flow Up to 1 litre per minute (0.1-0.2) 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 1/4" NPT (female)
Weight 22.5 Kg
Operating Supply Voltage 90 to 260 V AC, 50/60 Hz, 180 W Main Unit
Operating environment -20°C to +60°C up to 95 % RH, Indoor or Outdoor, shaded location
Remote Interface
Optional for indoor safe area installation
Host Capacity Up to 31 Michell EExd Process Area InstallationInstrumentation Range analyzers in any combination of models via Modbus
Display Backlit color 15 cm LCD
Function View and modify analyser operating settings. Record parameters to file and view virtual chart recorder Analyser diagnostics
Ports LAN, USB2, Modbus Re-transmission
Data Download CSV (comma separated variable) format for easy import to ExcelTM
Remote Access OPC (OLE for Process Control) over a LAN Embedded web page/unique IP address for PC access. Remote data reading via modbus RTU
Power Supply 100-280V, 50/60Hz
Plant control integration ActiveX components to be used by software programmers for integration of Modbus protocol into a general plant software system.
Hazardous Area Certification
ATEX Certification: II 2 G
Code: EEx d IIB + H2 T4 (135°C) IP66 Tamb
-40 to +60°C
cCSAus approved: Div 1, Class 1, Group B,C,D

Applications

Natural Gas & Petrochemicals

Produits associés

Condumax II Condumax II
Condumax II is a fully self-contained hydrocarbon dew-point analyzer that uses the proven "Dark...
Promet EExd Promet EExd
For the last thirty years, Michell Instruments has provided on-line moisture measurement...
Promet I.S. Promet I.S.
Promet Process Moisture Analyzers are heavy duty, industrial hygrometer systems for measurement...
Liquidew I.S. Liquidew I.S.
On-line measurement of moisture content in liquids is accurate, fast and reliable with the Liquidew I.S.