The dielectric polymer sensor provides stable and accurate dew point measurements and is not affected by most
gas compositions. A built-in sample pump draws in samples that are of insufficient pressure from the
process. The sample flow is shown on a small rotameter with valve. The analyzer then reads the dew point
continuously.
Depending on the application, the following models may be relevant:
• 257N4: applications at atmospheric pressure
• 257CAA-B - compressed air applications 5 to 125 psig
• 257CAA-C - compressed air applications 5 up to 3000 psig
Specifications
Method of Detection |
N/A Dielectric polymer sensor that changes capacitance with moisture variation |
Ranges Available |
N/A -40°F to +104°F (-40°C to +40°C) Dew Point |
Resolution |
N/A ±1°F (1°C) Dew Point |
Accuracy & Repeatability |
N/A ±1°F (±1°C) Dew Point |
Drift |
N/A Less than 1% of full scale per month |
Response Time (T-90) |
N/A Less than 60 seconds after initial purge down |
Ambient Temperature Range |
N/A -18 to 49 ºC0 to 120 ºF |
Linearity |
N/A Better than 1°F (1°C) Dew Point |
Size & Weight |
N/A Approx. 51 x 41 x 26 cm @ 10 kg (20" H x 16" W x 10" D @ 20lbs) |
Power |
N/A 115 VAC, 60 Hz 220 VAC, 50 Hz also available |
Output Options |
N/A 4-20mA output, isolated or non-isolated |
Alarms |
N/A High or low dew point alarm with relay contact |
Hazardous Area Rating Options |
N/A General Purpose, Non-Hazardous |
Applications
N/A
|
Features
N/A
|
Options
N/A
|
Calibration
N/A
|
Unique Applications
N/A
|
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