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Dew Point: The Sensors, Their Function, and What We Offer

When it comes to industrial applications, dew point sensors are beginning to play a more critical role. In applications such as compressed air systems, air pressure pipelines, and drying processes, dew point sensors are being used. Why?

Well, to begin, we should assess what a dew point sensor actually does and how it works.

What is a dew point sensor?

A dew point sensor is a piece of technology that takes the temperature at which any air sample will become saturated with water vapor. This measurement is related to the humidity of an air sample — the more humid the air is, the higher the dew point.

How does a dew point sensor work?

A dew point sensor will be installed directly into a pipe, and, when used correctly and working optimally, dew point sensors can help avoid malfunctions, improve operational efficiency, and improve end-product quality.

Our Dew Point Sensors

At JLC International, we sell a range of dew point transmitters which include the following. Please keep in mind that the dew point sensors offered by JLC International have applications with different engineering units, dependent upon the setup of this instrumentation:

  • Shaw SDT
    • Various Dewpoint ranges over -100 to +20 °C (-148 to +68 °F)
    • Accuracy of ± 2.0 °C (± 3.6 °F) dew point temperature
    • Output of 4 – 20 mA, 2-wire loop powered, 24 Vdc
    • Weight of 0.385 lbs
    • Weather-proof rating NEMA 4X (IP66 )
    • This dew point sensor is factory calibrated and traceable to international standards.
    • The performance of this technology is not affected by flow rate or pressure.
  • Shaw SDT-Ex
    • Various Dewpoint ranges over -100 to +20 °C (-148 to +68 °F)
    • Accuracy of ± 2 °C (± 3.6 °F) dew point temperature
    • Output of 4 – 20 mA, 3-wire technology, 24 Vdc
    • Intrinsically Safe to ATEX standards
    • Weight of 0.55 lbs (250 g)
    • Weather-proof rating NEMA 4X (IP66 )
    • This dew point sensor is factory calibrated and traceable to international standards.
    • The performance of this technology is not affected by flow rate or pressure.
  • Mini EE354
    • Designed for refrigeration dryers
    • Dewpoint range -20 to +50 °C (-4 to +122 °F)
    • Accuracy of ±1 °C (± 1.8 °F)
    • Output of 4 – 20 mA, 3-wire technology
    • ModBus RTU Digital interface
    • Weather-proof rating NEMA 4X (IP65)
  • OEM EE355
    • Dewpoint range -60 to +60 °C (-76 to 140 °F)
    • Accuracy of ≤ ±2 °C (± 3.6 °F)
    • Output of 4 – 20 mA, 3 wire technology
    • ModBus RTU Digital interface
    • Weather-proof rating NEMA 4X (IP65)
  • Compact EE371
    • Dewpoint range -60 to +60 °C (-76 to 140 °F)
    • Accuracy of ≤ 2 °C (3.6 °F) / 5 ppm + 9% of reading
    • 2 scaleable analogue outputs: Td, Tf or X(v)
    • 2 potential free relays
    • Auto-calibration
    • LC Display (optional)

For more information on our dewpoint sensors or other products, like our industrial flow meters, don’t hesitate to contact us. We’ll be happy to answer any questions you have or assist you in placing an order.