IOThrifty Blog

A comprehensive guide to understanding the foundations of dew point measurement in compressed air systems. This guide covers ISO 8573-1 industry standards for compressed air systems, the formula behind dew point measurement, and best practices for implementing a reliable dew point monitoring system for your compressed air system.

At IOThrifty, we work with customers from diverse industries—food processing, pharmaceuticals, HVAC, and more—who rely on accurate dew point measurements. Whether you’re monitoring moisture content in compressed air lines or ensuring environmental stability on a manufacturing floor, reliable dew point meters, dew point transmitters, and dew point sensors are essential to maintaining optimal process conditions.

A common question customers ask is whether a humidity or dew point sensor requires periodic recalibration. The answer depends on the specific accuracy requirements of the process in which the sensor is used. Most sensors will drift over time from their original specified accuracy, so periodic verification and adjustment may be required to restore them to their original accuracy specifications.

Discover the features and setup process of the HDR200, a high-performance dew point and relative humidity transmitter for demanding industrial environments. This video covers how to configure the HDR200 for dew point or humidity measurement, its ability to operate in temperatures up to 200°C and pressures up to 750 PSI, and how to connect it with devices like the N1540 panel meter. Ideal for compressed air systems, dryers, and environmental chambers, the HDR200 offers 4-20mA output, dual display, and flexible probe mounting options.

This blog includes the formulas to convert back and forth between relative humidity to dew point temperature.  It also includes an Excel spreadsheet to perform the calculation.

This article discusses instrumentation to measure dew point and humidity in an industrial environment.  The two most common types of instruments, capacitance based sensors and chilled mirror hygrometers are covered in detail.  The benefits and disadvantages of each type of instrument is discussed well as applications for which they are best suited.