Nova Analytical Systems, Inc. - Item # 255 Series, Process Gas Analyzer for PPM Moisture
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Item # 255 Series Process Gas Analyzer for PPM Moisture


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255-N4-PPM-H2O

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The Nova 255 Series analyzer consists of two major components housed in a wall-mounted, NEMA 4 powder-coated steel cabinet (standard enclosure). These components are the main controller, which can be easily seen through the clear window of the cabinet, and the electrolytic sensor.
The Model 255 is designed for the measurement of PPM moisture of clean process gases. The detection system includes an electrolytic cell which is very accurate and stable under most working conditions. The cell also features excellent resistance to corrosion from aggressive gases such as Chlorine, SO2 and HCl.
The available ranges of measurement for this analyzer are anywhere between 0-10 PPM to 0-5000 PPM moisture or the dew point equivalent.


 Applications  Specifications  Features  Options  

Method of Detection

Electrolytic cell

Resolution

±0.1 PPM on ranges <20 PPM; ±1 PPM on ranges >20 PPM

Accuracy & Repeatability

<1% of reading or 0.2 PPM, whichever is greater

Linearity

<1% of reading or 0.2 PPM, which ever is greater

Drift

Less than 0.2 PPM per 1 week

Response Time (T-90)

First time dry-down is in excess of 1 hour. After dry-down, response is less than 8 seconds to T90

Ambient Temperature Range

0 to 45°C (32 to 113°F)
Cold weather package -5 to -20°C (23° to -4°F)

Power

115 VAC, 60 Hz
220 VAC, 50 Hz

Unique Applications

  • Special rhodium detector cell for O2 or H2 background gas
  • RS-232 or RS-485 output
  • Dual 4-20mA outputs
  • Readout in Dew Point or lb/mm·scft
  • Sample preparation systems
  • Cabinet purge system
  • Low flow alarms
  • Built in sample pump
  • Cold weather package for operation to -5 °F (-20 °C)
  • Cabinet coolers can be fitted to most models
Built in sample pump
Cabinet coolers can be fitted to most models
Cabinet purge system
Cold weather package for operation to -5 °F (-20 °C)
Dual 4-20 mA outputs
Low flow alarms
Readout in Dew Point or lb/mm·scft
RS-232 or RS-485 output
Sample preparation systems
Special rhodium detector cell for O2 or H2 background gas

Size & Weight

Dimensions and weight will vary depending on enclosure Style and options required

Output Options

Dual 4-20 mA
RS-485/RS-232 for PC and DCS connection

Alarms

High and/or low PPM alarm
Low flow alarm

Mounting Options

Panel mounted
Rack mounted
Wall mounted

Models and Enclosure Options

NEMA 4 (IP56)
NEMA 4X

Options

Built in sample pump
Cabinet coolers can be fitted to most models
Cabinet purge system
Cold weather package for operation to -5 °F (-20 °C)
Dual 4-20 mA outputs
Low flow alarms
Readout in Dew Point or lb/mm·scft
RS-232 or RS-485 output
Sample preparation systems
Special rhodium detector cell for O2 or H2 background gas

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 DOWNLOADS 

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