The Vaisala DMP7 is a compact industrial probe for measuring low dew points in locations where a conventional probe is difficult to install. Its short sensing head can be mounted directly in a process or connected remotely to an Indigo transmitter, making it particularly useful inside compact equipment, dry-air systems and restricted pipework.
Vaisala DRYCAP® sensor technology provides stable measurement in demanding low-humidity conditions. The sensor tolerates condensation, oil, dust and most chemicals, while automatic sensor purge helps maintain performance between calibration intervals.
DMP7 at a Glance
Measured parameters
Dew point or frost point, temperature and calculated humidity parameters
Dew point range
−70 to +80 °C Td/f
Continuous-use dew point range
−70 to +45 °C Td/f
Dew point accuracy
Up to ±2 °C Td/f
Temperature range
0 to +80 °C
Process pressure
0 to 10 bar with the pressure-tight fitting
Probe length
41 mm
Digital output
Modbus RTU over RS-485
Sensor
Vaisala DRYCAP® 180M
Why Choose the DMP7?
Fits restricted installations: the short probe is suited to compact machinery, narrow ducts and other locations with little insertion space.
Measures very dry conditions: the wide dew point range supports dry-room, compressed-air and industrial drying applications.
Installs directly in pressurised processes: the pressure-tight fitting supports in-line measurement up to 10 bar without a separate sampling system.
Recovers from demanding conditions: DRYCAP technology withstands condensation and common industrial contaminants.
Offers flexible integration: use the probe directly through Modbus RTU or add an Indigo transmitter for a display, analogue outputs, relays and expanded system connectivity.
Typical Applications
Semiconductor and battery-manufacturing equipment
Dry rooms and glove boxes
Compressed-air and dry-gas systems
Industrial dryers and drying cabinets
Blanket gases used in metal heat treatment
Compact process equipment with restricted installation space
Fixed or Portable Measurement
For straightforward digital integration, the DMP7 can operate as a standalone Modbus RTU device. Where a permanent local display, analogue signal, relay control or Ethernet connection is required, pair it with a compatible Vaisala Indigo transmitter.
The DMP7 can also connect to the Vaisala Indigo80 handheld indicator, turning the installed-probe technology into a portable measurement and diagnostic setup. Indigo80 can display live readings, log measurement data and support field checking or adjustment of compatible probes. Up to two compatible Vaisala measurement devices can be connected at the same time, which is useful when comparing locations or using a second probe for a supporting measurement.
Product distinction: DMP7 is an Indigo-compatible industrial probe that can be used with Indigo80. DMP80 is a separate portable dew point probe designed specifically for handheld measurement with Indigo80.
The DMP7 also works with Vaisala Insight PC software for configuration, diagnostics, data viewing and field calibration.
Selection note: choose the DMP7 when physical clearance is the main constraint. For higher-pressure pipelines or installations that need adjustable probe depth and easy removal, consider the DMP8.
Installation and Ordering Considerations
Before selecting the probe and accessories, confirm the expected dew point, process temperature, operating pressure, available installation space, process connection and required output. Also decide whether the application needs direct Modbus communication, a permanent Indigo transmitter or portable operation with Indigo80.
Correct probe placement is important. The measurement point should represent the actual process condition and avoid stagnant pockets, leaks, ambient-air ingress and locations where condensate can collect.
Vaisala DMP Series Comparison
Choose the DMP probe according to the installation environment, process temperature, pressure and required dew point range.
Pressurised compressed-air and industrial-gas pipelines
−70 to +80 °C Td/f
Process pressure up to 40 bar absolute
Adjustable insertion depth with optional ball-valve installation
Quick selection: choose DMP1 for distributed dry-room monitoring, DMP5 for processes up to +180 °C, DMP6 for very hot processes up to +350 °C, DMP7 when installation space is limited, and DMP8 for pressurised pipelines up to 40 bar.
All five probes support Modbus RTU, compatible Vaisala Indigo transmitters, the Indigo80 handheld indicator and Vaisala Insight software. The final selection should also consider process gas, flow velocity, mounting access, required outputs and calibration arrangements.
DMP7 Videos
Technical Resources
Vaisala DMP7 Supplier and Technical Support in Malaysia
Seacom Process Instruments supplies and supports the Vaisala DMP7 Dew Point and Temperature Probe in Malaysia for semiconductor manufacturing, dry rooms, compressed-air systems, industrial drying and other low-humidity applications.
Our team can assist with probe selection, installation fittings, measurement-point review, Indigo transmitter pairing, portable Indigo80 arrangements, system integration, commissioning and calibration planning.
Contact Seacom with your dew-point range, process temperature and pressure, available mounting space, process connection and required output, and whether the measurement will be fixed or portable, so we can recommend a suitable DMP7 arrangement.
Vaisala Indigo510 and Indigo520 Flagship Transmitters
The Vaisala Indigo500 Series provides flagship industrial measurement integration: choose Indigo510 for a simplified single-probe system or Indigo520 for full dual-probe capability.
Indigo510: one probe and two isolated analog outputs
Indigo520: two probes, four isolated outputs and two relays
Ethernet web interface and Modbus TCP communication
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
Indigo201 with three analog outputs and two relays
Indigo202 with Modbus RTU and two relays
Colour display with numerical and graphical views
IP65 enclosure for industrial measurement applications
The Vaisala Dewpoint, Pressure and Temperature Multiparameter Transmitter DPT145 for SF6 Gas is a unique innovation that enables online measurement of dew point, pressure, and temperature. It also calculates four other values, including SF6 density. The DPT145 is especially well suited for integration into OEM systems.
- First transmitter to offer online measurement of seven SF6 parameters in one unit - Measured parameters: dew point, pressure, temperature - Calculated parameters: SF6 density, normalized pressure, dew point in atmospheric pressure, ppm - Saves time and money across the board, from investment and installation to operation and servicing - More reliable assessment of the condition of SF6 insulation due to online measurement - Long calibration interval of years
Condensation-resistant Vaisala Dewpoint Transmitter DMT340 is designed for industrial low-humidity applications such as industrial drying, compressed air systems, semiconductor industry, dry rooms, baking ovens, and metal heat treatment to provide accurate and reliable measurement.
The Vaisala DRYCAP® Dewpoint Transmitter DMT152 is designed for measuring low dew point in OEM applications, even down to -80°C. The excellent long-term stability and reliability of its performance is based on the latest DRYCAP® polymer sensor technology. The DMT152 is an ideal choice for industrial applications where it is necessary to control very low humidity.
DMT152 is an ideal choice for the semiconductor industry, air and plastics dryers, glove boxes, dry chambers, pure gases, additive manufacturing, high voltage circuit breakers and other applications where it is critical to control humidity with high accuracy. DMT152 measures accurately and reliably also in the challenging combination of low humidity and hot air, which is typical in plastics drying.
The Vaisala DMP1 Dew Point and Temperature Probe provides fast, dependable low-humidity measurement for dry rooms and moisture-sensitive manufacturing areas.
Dew point measurement range from −70 to +80 °C Td/f
Fast response for detecting changes across large dry rooms
Modbus RTU communication or integration with Vaisala Indigo transmitters
Connect to Indigo80 for portable display, data logging, diagnostics and field calibration
Suitable for battery production, semiconductor manufacturing and controlled dry environments
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP8 provides reliable low-humidity measurement in pressurised pipelines with adjustable installation depth.
Dew point measurement range from −70 to +80 °C Td/f
Designed for pressurised processes from 0 to 40 bar absolute
Adjustable insertion depth with ISO R 1/2 or NPT 1/2 process connection
Optional ball-valve kit permits insertion and removal without shutting down the process
Use with Modbus RTU, an Indigo transmitter or the portable Indigo80 handheld indicator
Vaisala Dewpoint Transmitter DMT132 is an affordable dew point measurement instrument designed to verify the functionality of refrigerant dryers. The probe has excellent long-term stability and it is resistant to compressor oil. It is especially well suited for OEM dryer manufacturers.
Vaisala HUMICAP® Dewpoint Transmitter DMT132 is an affordable dew point measurement instrument designed to verify the functionality of refrigerant dryers. The probe has excellent long-term stability and it is resistant to compressor oil. It is especially well suited for OEM dryer manufacturers.
Vaisala Miniature size dew point transmitters DMT143 and DMT143L are ideal choices when you want to measure dew point accurately in small compressed air dryers, plastic dryers, additive manufacturing and other OEM applications. They are easy to integrate and can be used in Vaisala DM70 hand-held. The long version has replaced the DMT242.
The Vaisala Dewpoint and Pressure Transmitter DPT146 for Compressed Air makes monitoring compressed air simple and convenient. The Vaisala Dewpoint Transmitter for Compressed Air DPT146 measures both dew point and process pressure simultaneously, and is the ideal choice for anyone using or monitoring compressed air.
- The first transmitter that monitors both dew point and process pressure - A simple and convenient transmitter for monitoring of compressed air - Highly accurate humidity information thanks to online pressure-compensated dew point data - Proven sensor technology - Compatible with the Vaisala Hand-Held DM70 for easy spot checking, local - display and data logging - Pressure: 1…10 bar - Dew point: -60 ... +30 °C
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP5 measures humidity directly in hot industrial processes with a long stainless-steel probe and adjustable installation depth.
Direct in-line measurement at process temperatures up to +180 °C
Dew point measurement range from −40 to +100 °C Td/f
Long probe reaches through insulation and thick process walls
Built-in Modbus RTU or integration with Vaisala Indigo transmitters
Connect to Indigo80 for portable display, diagnostics, configuration and field calibration
Vaisala Indigo510 and Indigo520 Flagship Transmitters
The Vaisala Indigo500 Series provides flagship industrial measurement integration: choose Indigo510 for a simplified single-probe system or Indigo520 for full dual-probe capability.
Indigo510: one probe and two isolated analog outputs
Indigo520: two probes, four isolated outputs and two relays
Ethernet web interface and Modbus TCP communication
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
Indigo201 with three analog outputs and two relays
Indigo202 with Modbus RTU and two relays
Colour display with numerical and graphical views
IP65 enclosure for industrial measurement applications
The Vaisala Indigo300 is a rugged industrial transmitter for one Vaisala Indigo-compatible smart probe, providing local measurement display and up to three configurable analog outputs.
Its corrosion-resistant IP66 metal enclosure, flexible probe mounting and interchangeable probe design make Indigo300 suitable for humidity, temperature, dew point, CO2, moisture in oil and other demanding industrial measurements.
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP7 is designed for accurate low-humidity measurement where installation space is limited.
Short 41 mm probe for remote installation in tight spaces
Dew point measurement range from −70 to +80 °C Td/f
Pressure-tight installation for processes from 0 to 10 bar
Use with Modbus RTU, an Indigo transmitter or the portable Indigo80 handheld indicator
Suitable for dry rooms, compressed air, industrial drying and semiconductor equipment
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