METPOINT® DPM
Sensor technology for precise pressure dew point measurement
Moisture in compressed air applications is a significant problem and can often lead to system damage and contamination of end products. The METPOINT DPM pressure dew point sensor is the ideal instrument for monitoring residual moisture. With the advanced sensor technology of the METPOINT DPM, you record the moisture level and pressure dew point precisely and reliably at the key points in the compressed air system. This data forms the basis for energy- and cost-efficient decisions while improving product quality.
Measuring range
−60 to +30 °Ctd
Operating pressure
up to 50 bar [g]
Output signal
4 to 20 mA, RS485
Medium temperature
−30 to +70 °C
Efficiency and safety in sensitive areas
In sensitive areas where the highest standards of hygiene are required and the compressed air comes into direct or indirect contact with products, precise monitoring of air quality is essential. The stationary METPOINT DPM pressure dew point transmitter reliably measures the critical parameters temperature, relative humidity and dew point (down to -60 °Ctd) in compressed air and technical gases.
The sensor also provides valuable information on the functionality of components and forms the basis for the optimum sizing of your systems. The METPOINT DPM is therefore not only a guarantee of safety in your process chain but also a key to increasing the efficiency of your production.
How pressure dew point measurement works
The METPOINT DPM dew point meter precisely records the critical parameters temperature, relative humidity and dew point in compressed air and other gases. Pressure dew point measurement is continuous, ensuring ongoing monitoring.
The recorded data can optionally be visualised via the METPOINT BDL compact or METPOINT BDL portable and, if required, stored automatically in the data logger. If a preset limit value is exceeded, an alarm relay can be activated so that the user is notified immediately when the process parameters enter the critical range.
Benefits of METPOINT® DPM dew point measurement
Safe
- continuous online measurement: determines the dew point of your compressed air from relative humidity and temperature
- robust stainless steel housing for use in harsh process environments
- precise: high measuring accuracy thanks to polymer sensor
Practical
- Plug & Play
- mobile and stationary monitoring
- optional: supply as a complete set with measuring chamber, sensor and data logger
- Calibration service from the manufacturer
The components of the optional METPOINT® DPM complete set:
We recommend supply as a Plug & Play complete set, consisting of:
1. DPM SD23 sensor
2. MK-Basic-PN16 measuring chamber with quick-release coupling
3. METPOINT BDL compact data logger
Optionally available: METPOINT BDL portable data logger, SD11 or SD21 sensor.
Technical data METPOINT® DPM
| Measuring range | −60 … +30 °Ctd |
|---|---|
| Max. permissible operating pressure (gauge) | 50 bar [g] |
| Max. measurement deviation | ± 4 K for −60 … −50 °Ctd ± 3 K for −50 … −30 °Ctd ± 2 K for −30 … −10 °Ctd ± 1 K for −10 … +30 °Ctd |
| Response time t95 | < 10 s (from dry to humid) < 40 s (from humid to dry) |
| Output signal | 4 … 20 mA, analogue, 4-wire (0 … 10 V, analogue, 4-wire as special version) RS485, digital output, 4-wire |
| Process medium temperature | −30 °C … +70 °C |
| Ambient temperature during operation | −25 °C … +60 °C |
| Storage and transport temperature | −40 °C … +85 °C |
| Ambient humidity | 0 … 95 %, non-condensing |
Technical data measuring chamber
| MK Basic PN16 | MK Basic PN50 | |
|---|---|---|
| Material | Aluminium | Aluminium |
| Max. permissible operating pressure | 16 bar [g] | 50 bar [g] |
| Max. permissible temperature range | 10 … 80 °C | 10 … 80 °C |
* Further technical data can be found in the product information in the download section below…
Frequently asked questions
Why do I need the METPOINT DPM?
Moisture in compressed air can cause system damage and contaminate end products. The METPOINT DPM monitors residual moisture and records the pressure dew point at the key points in the compressed air system.
What does the sensor measure?
It measures temperature, relative humidity and dew point in compressed air and technical gases. The measuring range extends from −60 to +30 °Ctd.
How accurate is the METPOINT DPM?
A polymer sensor ensures high measuring accuracy. The maximum deviation ranges from ±1 K in the range −10 to +30 °Ctd to ±4 K in the range −60 to −50 °Ctd.
How quickly does the sensor respond?
The response time t95 is under 10 seconds from dry to humid and under 40 seconds from humid to dry.
What pressures is it suitable for?
The sensor is approved up to 50 bar [g]. The measuring chamber is available as MK Basic PN16 up to 16 bar [g] and as MK Basic PN50 up to 50 bar [g].
Which output signals are available?
4 to 20 mA analogue and RS485 digital, each 4-wire. 0 to 10 V is available as a special version.
How are the measured values displayed and stored?
Optionally via the METPOINT BDL compact or the METPOINT BDL portable. If a limit value is exceeded, an alarm relay can be triggered.
What does the complete set include?
The Plug-&-Play complete set consists of the DPM SD23 sensor, the MK-Basic-PN16 measuring chamber with quick-release coupling and the METPOINT BDL compact data logger. The BDL portable and the SD11 or SD21 sensors are available as options.
Is there a calibration service?
Yes, the manufacturer offers a calibration service.
Who can help me choose the right measurement technology?
We can. We advise you on which sensors and data loggers suit your application. Call us or write to us.
The right measurement technology for your application?
Let us advise you to find the best measurement technology for your needs and application.
