Dew Point Sensor WADS 201-204 – Compressed Air Dew Point Meter

WADS 201-204 Dew Point Sensor - WiseAir India

The Wiseair Dew Point Sensor provides reliable and long-term stable dew point monitoring in industrial applications, with a range of -110 … +60 °C Td. It makes it an ideal choice for dew point measurements in high tech requirements and conditions.

The new generation of the dew point sensors offering compressed air users a plug & play solution to monitor their compressed air quality. All transmitter models are available with Analog 4… 20 mA output signals, in addition to that the models are available with a Modbus/RTU digital interface. By offering different output signals users can profit from great flexibility and seamless integration into their process.

Additionally, the dew point sensors are offered with an integrated pressure sensor, combining a pressure and dew point sensor into a single instrument. The main body is made from high class aluminium alloy with a soft finish. Top cover made from aluminium at the same quality as the main body.

How Does a Dew Point Sensor Help Monitor Compressed Air Quality?

A dew point sensor helps plant engineers monitor the moisture condition of compressed air continuously rather than relying only on periodic checks. The WADS 201-204 series measures pressure dew point across its available measurement ranges and can provide the reading through 4–20 mA or Modbus/RTU communication, depending on the selected model.

This makes it suitable for monitoring air after refrigerated or desiccant dryers, where a change in dew point can indicate a deterioration in dryer performance. Continuous compressed air dew point monitoring also gives maintenance teams an early indication of moisture-related problems before condensation reaches downstream equipment or affects product quality.

Features :

For high tech applications with a measurement range of -60°Ctd to +60°Ctd & -80°Ctd to +20°Ctd
Quick Response Time
Dual Sensor System for high precision over the whole range.
Compact size makes them ideal for dryer installations.
Accuracy ± 2°C IP65 rated
Strong contamination resistance
Signal Output: Modbus RTU interface and 4-20mA current / pulse output.
Modbus output signal are Pressure Dew Point (PDP), Relative Humidity, Temperature and Optional Integrated pressure transducer
4-20mA output signal are Pressure Dew Point (PDP)
CE marked in accordance with applicable EU Directives.
Declaration of Conformity available upon request.

What Measurement Range and Accuracy Does the WADS 201-204 Offer?

The WADS 201-204 series covers different dew point measurement ranges for industrial compressed-air applications, including options from -60°Ctd to +60°Ctd and -80°Ctd to +20°Ctd. The sensors are specified with an accuracy of ±2°C, providing plant engineers with a practical measurement range for monitoring dryer performance and moisture conditions.

Different ranges can be selected based on the required application, while the model selector helps match the appropriate sensor technology and casing to the selected measuring range.

Dew point Sensor – Model Selector Methods
SPECIFICATIONS

Dew point Sensor – Model Selector Methods

Model Selector (WADS 200)

Use this selector to generate the correct ordering code based on required measuring range

1) Measuring Range (Variant)

Select the required dew point measuring range.

2) Casing Preference

For some ranges, Stainless Steel casing will be required.

Sensor Technology

Auto-selected based on measuring range.

Matched Model

Matched automatically from your selection.

Model Details

Technology • Casing • Connector

Select Measuring Range (Variant)

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Where Can the WADS 201-204 Be Used for Dew Point Monitoring?

The WADS 201-204 can be used at different points where moisture control is important, particularly in compressed-air systems and dryer installations. Applications include monitoring air after refrigerated or desiccant dryers, checking dew point during spray-painting and PET bottle production, and monitoring moisture in pneumatic conveying systems.

The sensors can also be used for nitrogen or oxygen generators, thermal processing furnaces and compressed breathing-air systems where maintaining the required moisture condition is important for reliable operation and product quality.

APPLICATIONS

Dew point measurement in compressed air systems
Dew point measurement during the spray-painting process
Dew point measurement in PET bottle production
Dew point measurement after refrigerant dryer
Dew point measurement / Dryer control of desiccant dryers
Dew point monitoring in the pneumatic conveying of powder
Dew point monitoring of thermal processing furnaces
Dew point measurement for nitrogen or oxygen generators
Moisture and oil measurement during wire drawing and cable production
Humidity and quality measurement when generating compressed breathing air

The WADS 201-204 dew point sensor is suitable for continuous moisture monitoring in compressed-air systems where air quality and dryer performance are important. In Food & Beverage Plants, dew point monitoring can help maintain the required compressed-air quality for suitable production and utility applications, while providing early indication of moisture entering downstream equipment or processes.

In Pharmaceutical Plants, the WADS 201-204 can support continuous monitoring of compressed-air moisture in suitable utility and production systems. Monitoring pressure dew point helps maintenance teams identify changes in dryer performance early and reduce the risk of moisture-related issues affecting equipment reliability and product quality.

SPECIFICATIONS

Features	WADS 201	WADS 202	WADS 203	WADS 204
Technology	Compact Design	Polymer	Auto Drift Conection	Quartz

**DRYER TYPES – UPTO 40 bar (600psi)**
Desiccant Dryer	Above -40°C	Above -50°C	Above -60°C	Below -20°C
Membrane Dryer	Available	Available	Available	Available
Refrigerant Dryer	Available	Available	–	–

**MEASURING RANGE**
Dew Point Range	-60°C to +60°C	-60°C to +60°C	-80°C to +20°C	-110°C to +0°C
Operating Pressure Range	0 to 40 bar	0 to 40 bar (or) 0 to 16 bar	0 to 40 bar (or) 0 to 16 bar	0 to 40 bar (or) 0 to 16 bar
Gas Temperature Range	-40°C to +100°C	-40°C to +100°C	-40°C to +100°C	-40°C to +100°C
Accuracy	Dew Point : ±2°C Temperature : ±0.5°C	Dew Point : ±2°C Temperature : ±0.5°C	Dew Point : ±2°C Temperature : ±0.5°C Pressure : ±0.3%	Dew Point : ±2°C Temperature : ±0.5°C Pressure : ±0.3%
Minimum Gas Flow Rate	>1L / min	>1L / min	>1L / min	>1L / min

**OUTPUT SIGNAL**
Pressure Dew Point (PDP)	Available	Available	Available	Available
Gas Temperature	Available	Available	Available	Available
Relative Humidity	Available	Available	Available	Available
Pressure Transducer	–	Optional	Optional	Optional
Analog Output (4…20mA)	PDP Only	PDP Only	PDP Only	PDP Only
Digital Output (Modbus/RTU)	PDP, Temp, RH, Pressure	PDP, Temp, RH, Pressure	PDP, Temp, RH, Pressure	PDP, Temp, RH, Pressure

**OTHERS**
Pin Connection	5 Pin M8	5 Pin M12	5 Pin M12	5 Pin M12

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Brochure Flyer User Guide

Reduces operating and energy costs.
Improves downstream filter life and performance.
Increase the lifespan of your compressed air system and its components.
Reduces maintenance and makes the compressed air system more reliable and efficient.
Ensures stable quality of your products through less problems in operation of the system.
Enables fast responses to failures in compressed air drying through permanent monitoring of pressure dew point. Reduces risk of bacteria, fungus, and yeast built up.
Alerts you to changes in dryer performance before moisture appears in your plant.

Enquire About WADS – 201/ 202/ 203/ 204

Related Case Studies & Blogs

Case Study: Why Dew Point Measurement is Important

Learn why monitoring dew point in compressed air systems is critical for product quality, energy savings, and equipment protection.

Case Study: Reducing Costs in Your Compressed Air System

Discover how smart monitoring of dew point and flow helped reduce operational costs significantly in industrial compressed air systems.

How Compressed Air Monitoring Pays for Itself

A real-world case study showing the ROI of implementing compressed air monitoring with dew point sensors in manufacturing facilities.

Frequently Asked Questions

What is dew point in compressed air systems?

Dew point is the temperature at which moisture in compressed air begins to condense into liquid water. Monitoring dew point ensures air quality meets ISO 8573 standards and prevents corrosion and contamination.

Why is dew point monitoring important for compressed air?

Excess moisture in compressed air causes pipe corrosion, product contamination, pneumatic tool damage, and increased energy costs. Dew point sensors help maintain optimal dryer performance.

What dew point range do the WADS 201-204 sensors measure?

The WADS 201-204 series covers a wide dew point measurement range suitable for monitoring refrigerated and desiccant air dryers in industrial compressed air systems.

Dew Point Sensor WADS 201 / 202 / 203 / 204

Dew Point Sensor WADS 201-204 – Compressed Air Dew Point Meter

WADS 201/202/203/204