Products » Dew Point

Dew point meters and measurement tools for compressed air and gases

Choosing the correct dew point meter and dew point measurement equipment for your application is essential. To help you getting the most out of your compressed air or industrial gas systems feel free to contact us by using our contact form or just give us a call.

DP 500 - Portable dew point meter with integrated data logger

is the ideal portable service instrument for dew point measurement for all types of dryers down to -80°Ctd dew point.

DP 510 - Portable dew point meter with third-party sensor

disposes of all functions of DP 500 and has a additional freely assignable sensor input.

DS 400 Set - Stationary dew point measurement in compressed air systems

Ideal for the monitoring of refrigeration or adsorption dryers.

FA 500 - Dew point sensor with integrated display and alarm relay

Ideal instrument for dew point measuring for all kinds of dryers.

FA 510/515 - the new generation of dew point sensors

for residual moisture measurement after desiccant dryers/ membrane dryers from -80 to 20°Ctd. New: with Modbus-RTU interface.

Dew point measurement DS 52-set for desiccant dryers

with the digital process meter DS 52 and the dew point sensor FA 510 with a measuring range from -80 to 20°Ctd.

The dew point sensors FA510/515 for the typical use in refrigeration dryers

From -20 to 50°Ctd. New: with Modbus-RTU interface.

Dew point measurement DS 52-set for refrigeration dryers

with the digital process meter DS 52 and the dew point sensor FA 510 with a measuring range from -20 to 50°Ctd.

Dew point sensor FA 410 for monitoring of membrane and adsorption dryers

from -80 to 20°Ctd. Extremely long-term stable. Analogue output 4...20 mA.

Dew point measurement DS 52-set for adsorption dryers.

The measuring range of -80...20°Ctd makes the DS 52-set with alarm the ideal dew point monitor with analogue output 4...20 mA.

Dew point transmitter FA 415 for the monitoring of refrigeration dryers

from -20 to 50°Ctd. Extremely long-term stable. Analogue output 4...20 mA.

Dew point measurement with DS 52-set for refrigeration dryers

The measuring range of -20...50°Ctd makes the dew ponit set DS 52 with alarm the ideal dew point monitor with analogue output 4...20 mA.

Dew point sensor FA 400 with integrated display and alarm relay

is the ideal instrument for dew point measuring for all kinds of dryers.

FA 300-2 Ex - Dew point sensor with the ATEX approval for Zone 1.

FA 300-2 measures the dew point resp. the pressure dew point in explosive areas of Zone 1. Protection class: FA 300-2 Ex: I 2G Ex ia II C T4.

DP 400 mobile - Mobile Dew Point Measurement with Pressure Sensor

Mobile dew point measurement system to measure dew point and other pressure dependent values.

Accessories for dew point measurement

Standard measuring chamber

for compressed air up to 16 bar

High-pressure measuring chamber

for compressed air up to 350 bar

Measuring chamber for granulate dryers

up to 250 mbar

Measuring chamber for atmospheric dew point

Control and calibration set for dew point sensors

is screwed onto the dew point sensor and therefore enables an easy and low-priced possibility for on-site control and calibration down to -20°Ctd.

Measuring chamber stainless steel 1.4305, for dew point measurement

in gases / air up to 100 bar

Why choosing dew point meters from CS Instruments?

Dew point measurement and monitoring in compressed air systems is essential. Drying of granulate in plastics technology, the generation and usage of various technical gases (N2, O2, Ar, H2) and a lot more applications require professional dew point measurement equipment for perfect operation. Proven and reliable dew point meters from CS Instruments are helping customers worldwide to ensure the required product quality in compressed air and gas systems.

As experience manufacturer of dew point sensors CS Instruments offer a wide and field proven product portfolio for dew point sensors. Our delivery program includes especially designed stationary and mobile solutions for dew point monitoring of refrigeration, adsorption or membrane dryers. Ideal accessories like measuring chambers, dry containers or diffusion tight hose ensure that CS dew point systems are the perfect solution for a trouble-free dew point measurement.

Standard interfaces are 4…20mA, Modbus RTU or M-Bus. Furthermore, all dew point sensors can be combined easily with our data loggers. Dew point sensors form CS Instruments enables a reliable and long-term stable monitoring of the dew point in industrial applications from -80 to +20 °C dew point. We recommend the indirect installation with measuring chamber. This enables easy mounting and dismounting of the probe without interruption of the line, a quick response time and optimum sensor protection.

Dew point meters from CS Instruments offer:

  • Measurement of very low dew points down to -80 °Ctd
  • Extreme long-term stability due to internal automatic calibration
  • IP 65 housing that grants a reliable protection in extreme industrial conditions
  • Very fast response times
  • Installation in the dryer by means of G 1/2" thread, optional UNF 5/8” or NPT ½”
  • High accuracy of ± 2 °Ctd
  • On-site calibration and testing with CS control and calibration set

Why dew point measurement is essential?

Air always contains water in form of vapor. Since air contrary to water can be compressed the water drops out during the compression procedure in form of condensate. The maximum humidity of the air depends on the temperature and the volume. It does not depend on any quantity. The ambient air can be imagined like a wet sponge. In relaxed condition, it is able to absorb a certain quantity of water. It the sponge is squeezed water drops out. Some water will remain in the sponge even in case of a strong compression. This process is similar to the compressed air applications.

What exactly is meant by dew point? 

At each temperature, air or other gases can hold a maximum quantity of water. The warmer the air is the more water can be absorbed. Dew point is the temperature to which air or gas must be cooled for the water vapor in it to condense into dew or frost.

What means pressure dew point?

Pressure dew point is the temperature to which the compressed air can be cooled down without any condensation. The pressure dew point depends on the final compression pressure. In case of a declining pressure also the pressure dew point drops. For compressed air only the pressure dew point is significant. The atmospheric dew point is misleading and should not be used. 

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CS INSTRUMENTS GmbH & Co. KG
Zindelsteiner Straße 15
D-78052 VS-Tannheim
P: +49 7705 978 99 0
F: +49 7705 978 99 20
E: info@cs-instruments.com