The Vaisala DMP1 Dew Point and Temperature Probe provides fast, dependable low-humidity measurement for dry rooms and moisture-sensitive manufacturing areas.
The Vaisala DMP1 Dew Point and Temperature Probe is designed for fast, reliable monitoring throughout extremely dry manufacturing areas. Multiple probes can be installed at critical locations to identify local variations instead of relying on a single room measurement.
Its fast response and low dew point capability make the DMP1 particularly suitable for lithium-ion battery production, semiconductor manufacturing, cleanrooms and other moisture-sensitive processes.
| 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 |
| Temperature accuracy | ±0.2 °C at room temperature |
| Digital output | Modbus RTU over RS-485 |
| Sensor | Vaisala DRYCAP® 180M |
| Probe-body protection | IP66 |
| Property | Specification |
|---|---|
| Dew point measurement range | −70 to +80 °C Td/f |
| Dew point accuracy | Up to ±2 °C Td/f, depending on measurement conditions |
| Dry-to-wet response, 63% [90%] | 5 seconds [15 seconds] |
| Wet-to-dry response, 63% [90%] | 45 seconds [8 minutes] |
| Temperature sensor | Pt100 RTD Class F0.1 IEC 60751 |
| Operating temperature | −40 to +80 °C |
| Operating voltage | 15–30 V DC |
The DMP1 can communicate directly with an automation or monitoring system through Modbus RTU. When a permanent display, analogue output, relay or Ethernet connection is required, it can be paired with a compatible Vaisala Indigo transmitter.
Connect the DMP1 to the Vaisala Indigo80 handheld indicator for portable measurement display, data logging, diagnostics, probe configuration and field calibration. Indigo80 accepts up to two compatible Vaisala measurement devices, allowing a DMP1 to be checked alongside another probe or supporting measurement.
Product distinction: DMP1 is an industrial dry-room probe that can also be used portably with Indigo80. DMP80 is a separate portable dew point probe designed specifically for handheld spot measurements.
The DMP1 also works with Vaisala Insight PC software for configuration, diagnostics, measurement-data viewing and calibration support.
Confirm the required dew point range, room size, airflow pattern, critical production locations, acceptable response time and the number of measurement points. Probe positions should represent the occupied process area and avoid direct supply-air discharge, doors, wall surfaces and stagnant corners unless those locations are intentionally being monitored.
Also decide whether each point needs direct Modbus communication, a local Indigo display, connection to the facility monitoring system or occasional portable checking with Indigo80.
Choose the DMP probe according to the installation environment, process temperature, pressure and required dew point range.
| Model | Best suited to | Dew point range | Temperature or pressure limit | Installation |
|---|---|---|---|---|
| DMP1 | Dry rooms, battery production and semiconductor manufacturing | −70 to +80 °C Td/f | Probe operating temperature −40 to +80 °C | Compact fixed probe for distributed room monitoring |
| DMP5 | Hot industrial dryers, ovens and process ducts | −40 to +100 °C Td/f | Process temperature up to +180 °C | Long direct-insertion probe with adjustable mounting depth |
| DMP6 | Very-high-temperature dryers, ovens and industrial processes | −25 to +100 °C Td/f | Direct process measurement from +100 to +350 °C | Direct-insertion probe with a dedicated passive cooling set |
| DMP7 | Tight spaces, compact equipment, dry gas and compressed air | −70 to +80 °C Td/f | Process pressure up to 10 bar | Short 41 mm sensing head with pressure-tight fitting |
| DMP8 | 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.
This official Vaisala application video explains why fast-response dew point measurement is important for controlling battery-manufacturing dry rooms.
Seacom Process Instruments supplies and supports the Vaisala DMP1 Dew Point and Temperature Probe in Malaysia for battery manufacturing, semiconductor production, cleanrooms and other ultra-low-humidity applications.
Our team can assist with dry-room measurement-point planning, probe quantities and locations, Indigo transmitter selection, portable Indigo80 arrangements, system integration, commissioning and calibration planning.
Contact Seacom with your room layout, required dew point range, airflow arrangement, critical process locations, number of monitoring points and required system outputs so we can recommend a suitable DMP1 configuration.
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The Vaisala Indigo500 Series provides flagship industrial measurement integration: choose Indigo510 for a simplified single-probe system or Indigo520 for full dual-probe capability.
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
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.
The Vaisala DRYCAP® Dew Point Probe DMP6 measures humidity directly inside very hot industrial processes using a robust probe and passive cooling set.
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP8 provides reliable low-humidity measurement in pressurised pipelines with adjustable installation depth.
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP7 is designed for accurate low-humidity measurement where installation space is limited.
The Vaisala Indigo80 is a robust handheld indicator and data logger for industrial spot checks, process diagnostics, field calibration and measurement data analysis.
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.
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The Vaisala DMT340 Series provided configurable dew-point and temperature measurement for industrial low-humidity applications. The series is discontinued and replaced by Vaisala Indigo500 transmitters with DMP7 or DMP8 smart probes.
The Vaisala DMT152 provides accurate dew-point measurement down to −80 °C Td/f for ultra-dry industrial and OEM applications. This model is discontinued and has been replaced by the Vaisala DMT153.
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP7 is designed for accurate low-humidity measurement where installation space is limited.
The Vaisala DPT146 combines dew-point and process-pressure measurement in one compact transmitter for compressed-air systems. This model is discontinued and should not be selected for new projects.
The Vaisala DMT345 and DMT346 provided direct dew-point measurement in hot industrial drying processes. Both models are discontinued and replaced by Vaisala DMP5 or DMP6 smart probes with an Indigo transmitter.
The Vaisala DMT143 and DMT143L provide compact, dependable dew-point measurement for small industrial dryers, compressed-air systems, glove boxes and OEM equipment.
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
The Vaisala DRYCAP® Dew Point and Temperature Probe DMP8 provides reliable low-humidity measurement in pressurised pipelines with adjustable installation depth.
The Vaisala DPT145 provides online dew-point, pressure and temperature measurement for SF6-insulated electrical equipment. The model is being discontinued and should not be specified for new projects.
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 DMT153 provides traceable low-dew-point measurement for ultra-dry industrial processes. It is the current replacement for the DMT152, with modern analog, Modbus and Vaisala Indigo connectivity.
The Vaisala DRYCAP® Dew Point Probe DMP6 measures humidity directly inside very hot industrial processes using a robust probe and passive cooling set.
The Vaisala DMP1 Dew Point and Temperature Probe provides fast, dependable low-humidity measurement for dry rooms and moisture-sensitive manufacturing areas.
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