Dew Point Meters for Compressed Air and Gases

A dew point meter measures the temperature at which the water vapor in compressed air becomes liquid and condenses (dew point temperature). The following happens:

1. Humidity Measurement: The sensor of the instrument detects the humidity in the air, together with the measured temperature of the air, the dew point or dew point temperature is then calculated.
2. Providing real-time data: Advanced models display the results digitally, allowing operators to monitor air quality continuously.

Do you want to calculate your dew point?

Use our SUTO iTEC Humidity Calculator for your application. It will also help you find the best dew point sensor for your application.

Dew point meters come in different designs to suit various applications:

• Polymer Sensors:
  • Ideal for standard applications in refrigeration or desiccant drying systems.
  • They measure dew points in the range -60°C to +50°C.
• QCM (Quartz Crystal Microbalance) Sensors:
  • Designed for ultra-low dew points (-100°C to -20°C).
  • Perfect for industries requiring high precision, such as electronics and pharmaceuticals.
• Integrated Pressure Measurement: In order to be able to output the pressure dew point according to ISO 8573-1, a conversion must be carried out. This requires a built-in pressure sensor.

SUTO iTEC’s S220: A Market-Leading Solution

SUTO iTEC sets itself apart with the S220 Dew Point Meter, which combines Polymer and QCM sensors into a single device. This innovation provides a wider measurement range of -100°C to +20°C, covering both standard and ultra-low dew point applications.

This makes the S220 an ideal choice for highly demanding industries where both accuracy and flexibility in compressed air systems are needed.

Optional integrated pressure measurement combines four sensors in one instrument.

SUTO iTEC’s dew point sensors for compressed air are highly versatile and capable of measuring various gases, including:

• Carbon Dioxide (CO₂): Used in food and beverage processing.
• Nitrogen (N₂): Common in manufacturing and packaging.
• Oxygen (O₂): Essential for pharmaceutical and medical applications.

Custom solutions are also available for monitoring humidity, temperature, and dew point in alternative gases, ensuring compatibility with unique industrial requirements.

Contact our experts to find the best solution for your application

Dew point sensors are essential wherever dry process air is critical. They help monitor humidity levels, store measurement data, and trigger alarms or actions when limits are exceeded. This protects the production and ensures consistent air quality.

Applications Where Dry Air Is a Must

• Paint shops: In modern paint systems, spray guns run on compressed air. If water mixes with the paint, it causes visible contamination. A single issue like this can ruin a full day of production.

• Food industry: Compressed air is used to inflate packaging like chip bags. Any moisture can carry bacteria or make crispy snacks soggy. That’s why dry air is vital.

• Pharmaceutical manufacturing: Moisture-free air ensures compliance with strict regulations and guarantees product purity.

• Electronics production: Humidity can damage sensitive components. Dew point monitoring keeps your products safe and reliable.

• Packaging lines: Clean, dry air helps prevent contamination and supports hygienic, high-quality packaging.

Dew point sensors are critical in any process where even one drop of water could damage equipment or compromise product quality.

Calibration is an essential aspect in ensuring your dew point sensor is accurate and reliable.

Regular calibration helps:

• Maintain accuracy: Ensures precise readings and consistent performance over time.
• Ensure compliance: Meets industry standards like ISO 8573-1 for moisture content monitoring.
• Prevent issues: Reduces the risk of equipment failure and contamination due to inaccurate measurements.

SUTO iTEC offers professional calibration services for all sensors in our own laboratories, including inspection and cleaning, to maintain long-term reliability and performance.

Learn more about our calibration service.

SUTO offers a wide range of useful accessories to complete the full range of dew point measurement and monitoring. Typically, measurement chambers are most commonly used in compressed air systems. When using a dew point meter or sensor, it’s important that the air or gas flow passes the surface of the sensor element.

This is critical for accurate measurement and fast response times. For installations where it is not possible to install the sensor tip directly in the air flow, SUTO offers various measuring chambers as accessories. Chambers with quick connectors for quick and easy installation under pressure, or bypass chambers for loss-free measurements, as well as high-pressure measuring chambers and many more.

Ask our service team for their expertise.