Description
Dew point thermometer for compressed air PCE-DPM 3
Sintered cap for protection against moisture and dust / Data can be read out via any computer / Data memory for approximately 50,000 measurement data / Battery rechargeable via micro-USB / Easy to operate
The mobile dew point thermometer for compressed air is a testing device used to monitor the quality of compressed air in stationary and mobile compressed air generators. This thermometer measures the temperature, relative humidity, and calculates the current dew point up to an ambient pressure of 20 bar. The sintered cap protects the thermometer’s sensors from dirt, moisture, and high flow speeds, thereby increasing its service life. The thermometer’s data memory allows the recording of measurement parameters in a pressure line.
The recorded data is permanently stored in the internal memory and can be directly accessed on the thermometer. Additionally, the thermometer can be connected to a computer via the micro USB interface, as it is recognized as a mass data storage device. The measurement data is saved in CSV format, allowing for easy evaluation using any spreadsheet program.
In various industrial processes such as automotive, chemical, packaging, sealing, pneumatics, equipment maintenance, painting, cleaning, and medical applications, compressed air is essential. Therefore, the quality of the compressed air is crucial for these processes. Deviations in pressure dew point, which result from increased pressure on gas, can cause serious damage to machines, production lines, and final products. Excessive condensate arising from deviations in dew point can lead to mold and bacteria formation, reduced shelf life, and poor vacuum packaging in food production. Similarly, excessive water drops in sprays and paints used in the painting industry can significantly decrease material quality. Similar effects can occur in cosmetics and pharmaceutical production.
The necessity and frequency of measuring dew point levels in compressed air depend on the specific process, such as drying, food production, packaging, and instrument air supply. Continuous monitoring with reliable and calibrated equipment is essential to ensure accurate results. Measuring sensors assist producers in complying with ISO standards for compressed air quality classes, which include particle presence, oil content, and pressure dew point. Properly working systems with correct pressure and temperature regulation, clean working areas, ventilation and filtering, and maintenance within permissible limits are necessary for flawless production and performance.
Gas mixtures can contain water vapor, and as these mixtures cool, their capacity to absorb gaseous water decreases. The dew point or dew point temperature is the temperature at which saturation with water vapor is reached. When the gas mixture is cooled below this temperature, water vapor becomes liquid water, forming mist in the gas or condensing on cold water-repellent surfaces. The dew point is not only dependent on moisture content and temperature, but also on pressure. As gas is compressed, its saturated vapor pressure increases, and the associated pressure dew point rises. Lower pressure dew point values indicate lower water vapor content in compressed gas.
The pressure dew point can be used as a controlled variable in processes where water formation in gas or compressed air-filled lines and containers is undesired. It can serve as a reference value for relative humidity at specific temperatures and pressure, or be directly compared to process and ambient temperatures. If the measured pressure dew point is too high, the process may be interrupted or adjusted to prevent damage to equipment, product spoilage, or failure. In moisture-sensitive compressed air systems or processes, moisture is often removed from the compressed air using specialized equipment, and measuring the pressure dew point can help verify the effectiveness of these drying processes and equipment.
- Data storage with CSV data export
- Dew point, H2O, temperature, humidity measurement
- For inline measurement of pressure pipes
- Battery operation for mobile use
- With G1 / 2″ connection thread
- Sensors protected with sintered filters
