PCE-DPM THERMOHYGROMETER 3

What is the PCE-DPM Thermohygrometer 3 and why choose it?

The PCE-DPM Thermohygrometer 3 is a mobile pressure dew point meter designed to monitor the quality of compressed air in both mobile and stationary compressed air generators. It measures temperature, relative humidity, H2O content and calculates the current dew point at pressures up to 20 bar (absolute). A sintered cap protects the sensor from dirt, moisture and high flow velocities, helping to extend the sensor service life. With internal memory and CSV data export via micro USB, it allows reliable, traceable documentation of compressed air conditions.

Main features

• Measurement of pressure dew point, H2O, temperature and relative humidity
• Designed for measurements in pressurised air lines up to 20 bar (absolute)
• Sintered protective cap for the sensor, resistant to dirt, moisture and high flow speeds
• Internal memory for approximately 50,000 values with configurable logging intervals
• Data export in CSV format via micro USB interface (recognized as external storage)
• Rechargeable accumulator for mobile use (3.7 V DC, 3000 mAh)
• G 1/2" connection thread for easy installation in pressure lines
• 2.3" LCD display for direct on-site reading of measured values
• Supplied with USB power cable, micro USB cable, transport case and user manual

Technical specifications

Temperature

• Measuring range: -10 ... 60 °C
• Resolution: 0.01 °C
• Accuracy at 20 °C: -10 ... 50 °C: ±0.3 °C

Relative humidity

• Measuring range: 0 ... 100 %
• Resolution: 0.01 %
• Accuracy at 20 °C:
• <5 %: ±(0.025 % + 17.5 % of value)
• >5 %: ±(1 % + 5 % of value)
• >15 %: ±(2 % + 3 % of value)

Dew point*

• Measuring range: -50 ... 30 °C
• Resolution: 0.01 °C
• Accuracy: -40 ... 20 °C: ±2 °C
• Accuracy: -50 ... -40 °C: ±2.5 °C

*Dew point accuracy applies at an ambient temperature between 16 ... 25 °C.

H2O

• Measuring range: 40 ... 20,000 ppm
• Resolution: 1 ppm
• Accuracy at 20 °C: ±(7.3 ppm + 8.3 %)

Operating conditions

• Ambient temperature: -10 ... 60 °C
• Pressure: 0 ... 20 bar (absolute)
• Response time at 0.2 m/s, 1 bar, 0 ... 40 °C: 20 s [120 s]
• Response time at 20 °C, 63 % RH [90 %], -40 ... 0 °C: 10 s [20 s]

Data logging

• Memory capacity: approx. 50,000 values
• Standard logging rate: 10 seconds
• Selectable logging intervals: 1, 5, 10, 20 minutes
• Selectable logging duration: 1, 5, 12, 24, 48 hours
• File format: CSV

Mechanical design

• Cable length: approx. 1.5 m
• Connection thread: G 1/2"
• Thread length: 1.2 cm
• Probe length: 5.2 cm
• Probe diameter: 1.2 cm

Display and power supply

• Display: 2.3" LCD
• Accumulator: 3.7 V DC, 3000 mAh
• Mains adapter input: 100 ... 240 VAC, 0.25 A
• Mains adapter output: 5 V DC, 1 A
• Interface: micro USB
• Weight: approx. 610 g

Scope of delivery

• 1 x PCE-DPM 3 dew point meter
• 1 x USB power cable
• 1 x micro USB cable
• 1 x transport case
• 1 x user manual

Accessories

• CAL-PCE-DPT calibration certificate

Applications and use cases

• Monitoring the quality of compressed air in mobile compressed air generators
• Checking dew point and humidity in stationary compressed air systems
• Measurement in pressure pipelines using the integrated G 1/2" connection thread
• Recording and documenting long-term trends of dew point, humidity, temperature and H2O content using the internal data logger
• Subsequent evaluation of measurement data in spreadsheet software thanks to CSV export via micro USB

FAQ

What parameters does the PCE-DPM Thermohygrometer 3 measure?

It measures temperature, relative humidity, dew point and H2O content in ppm.

Can the device be used in pressurised systems?

Yes, it is designed for measurements in pressure lines with pressures from 0 ... 20 bar (absolute) and features a G 1/2" connection thread.

Does the instrument have data logging capability?

Yes, it has an internal memory for approximately 50,000 values with selectable logging intervals and recording times. Data is saved in CSV format.

How are the stored data read out?

The device connects to a PC via the micro USB interface and is recognised as an external memory or drive. The stored CSV files can then be opened with spreadsheet software.

What protects the sensor in harsh conditions?

The sensor is protected by a sintered cap, which shields it from dirt, moisture and high flow velocities.

What type of display does the device have?

It is equipped with a 2.3" LCD display for visualisation of the measured values.

Is the instrument suitable for mobile use?

Yes, it is powered by a 3.7 V DC, 3000 mAh accumulator and is supplied with a transport case, making it suitable for mobile applications.

What accessory is available for calibration?

The available accessory is the CAL-PCE-DPT calibration certificate.

Transport information (Section 14)

Consultar ficha técnica del fabricante.

Personal protective measures (Section 8)

Consultar ficha técnica del fabricante.

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