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DMT143 catalogue
Miniature Dew Point Transmitters DMT143
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Vaisala DMT153 Dew Point Transmitter for Ultra-Dry Applications
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.
- Calibrated dew-point range from −80 to −20 °C Td/f
- Dew-point accuracy up to ±2 °C Td/f
- Operating pressure from vacuum to 50 bar absolute
- Analog outputs or RS-485 with Modbus RTU
- Compatible with Vaisala Indigo transmitters and Indigo80
- DRYCAP® sensor with automatic calibration and sensor purge
Reliable Measurement for Ultra-Dry Industrial Processes
The Vaisala DRYCAP® DMT153 is designed for applications where a small increase in moisture can affect product quality, process stability or production yield. It measures dew point down to −80 °C Td/f and provides continuous data for process control, alarms, quality records and troubleshooting.
Its compact stainless-steel body fits OEM equipment and process installations. The transmitter can be installed directly into a suitable gas line or used with a Vaisala sampling cell when isolation, controlled sample flow or easier maintenance access is required.
Typical DMT153 Applications
| Application | What the DMT153 monitors | Why it matters |
|---|---|---|
| Battery manufacturing | Dry rooms, dry booths, glove boxes and process equipment | Helps detect moisture excursions that can affect sensitive electrode materials and cell quality |
| Semiconductor production | Process tools, specialty-gas lines and ultra-dry enclosures | Provides continuous moisture indication for tightly controlled manufacturing processes |
| Pure-gas systems | Air, nitrogen, argon, helium and oxygen | Supports moisture-quality verification during production, distribution and use |
| Compressed air | Critical low-dew-point dryer outlets and distribution lines | Confirms dryer performance and identifies moisture breakthrough |
| OEM equipment | Compact dryers, test chambers, isolators and research systems | Combines a small installation footprint with analog or digital integration |
Measurement Performance
| Specification | DMT153 performance |
|---|---|
| Calibrated dew/frost-point range | −80 to −20 °C Td/f |
| Non-calibrated output range | −100 to +20 °C Td/f |
| Accuracy from −80 to −40 °C Td/f | ±2 °C Td/f |
| Accuracy from −40 to −20 °C Td/f | ±3 °C Td/f |
| Typical dry-to-wet response | 2 seconds to 63%; 5 seconds to 90% |
| Typical wet-to-dry response | 30 seconds to 63%; 7.5 minutes to 90% |
| Measurement cycle | 1 second |
| Digital resolution | 0.01 °C Td/f |
| Calibration | SI-traceable calibration certificate included |
Available Measurement Outputs
- Dew point or frost point temperature in °C or °F
- Dew point over water in °C or °F
- Water concentration in ppmv or ppbv
- Water mass fraction in ppmw
Analog, Modbus or Indigo Integration
| Integration method | Available functions | Important selection point |
|---|---|---|
| Standalone analog mode | One scalable current channel and one scalable voltage channel | Choose 4–20 mA or 0–20 mA, plus 0–5 V or 0–10 V |
| Standalone digital mode | RS-485 communication using Modbus RTU | Analog and digital modes cannot operate simultaneously on a standalone DMT153 |
| Vaisala Indigo transmitter | Local display, additional outputs, logging and extended system connectivity depending on transmitter | Select the Indigo model according to output, display and network requirements |
| Vaisala Indigo80 | Portable display, configuration, diagnostics, data logging and field calibration | DMT153 is not compatible with the older MI70 handheld platform |
| Vaisala Insight software | Configuration, diagnostics, temporary monitoring and calibration adjustment | Use the correct service cable and a supported Windows computer |
Output-mode note: a standalone DMT153 operates in either analog mode or Modbus RTU mode. If the application requires simultaneous analog outputs and digital access, use a compatible Vaisala Indigo transmitter and confirm the complete system configuration before ordering.
Operating and Mechanical Specifications
| Specification | Available configuration |
|---|---|
| Operating temperature | −40 to +70 °C |
| Operating pressure | 0 to 50 bar absolute |
| Measurement gases | Air, nitrogen, argon, helium, oxygen and vacuum applications, subject to compatibility review |
| Protection rating | IP66 |
| Body material | AISI 316L stainless steel |
| Process connections | ISO G1/2, NPT 1/2 or UNF 3/4-16 |
| Electrical connector | M12 five-pin A-coded male |
| Dimensions | 30 × 33 × 136.5 mm |
| Weight | Approximately 190 g |
| Nominal supply | 24 VDC; permitted range depends on output mode and operating conditions |
DRYCAP® Stability in Demanding Conditions
The DMT153 uses the Vaisala DRYCAP® 180U sensor. Automatic calibration reduces possible dry-end drift, while sensor purge heats the sensor to remove certain contaminants that could affect long-term performance. The sensor also tolerates temporary condensation and recovers when the measurement conditions become dry again.
The transmitter is supplied with factory calibration and a traceable certificate. A 24-month calibration reminder is enabled by default, although the appropriate interval should be based on the application, quality requirements and measurement conditions.
Replacing a Vaisala DMT152
The DMT153 is the current successor to the discontinued DMT152. It retains the established DRYCAP® 180U sensor, measurement range and core performance while adding Modbus RTU, Vaisala Indigo compatibility, Insight software support and an industrial M12 connector.
| Migration point | DMT152 | DMT153 |
|---|---|---|
| Product status | Being discontinued | Current replacement |
| Calibrated range | −80 to −20 °C Td/f | −80 to −20 °C Td/f |
| Sensor | DRYCAP® 180U | DRYCAP® 180U |
| Digital protocol | RS-485 | Modbus RTU over RS-485 |
| Portable indicator | MI70 platform | Indigo80 |
| Software | Legacy configuration tools | Vaisala Insight PC software |
| Electrical connection | Two M8 four-pin connectors | One M12 five-pin connector |
| Process threads | Included a 5/8-18 UNF option | G1/2, NPT 1/2 or UNF 3/4-16 |
DMT152 replacement check: DMT153 is the functional successor, but it is not a drop-in electrical replacement. Review the connector, wiring, output mode, process thread, handheld indicator and receiving-system configuration before changing an installed DMT152.
Compare DMT143, DMT132 and DMT153
| Selection point | DMT143 / DMT143L | DMT132 | DMT153 |
|---|---|---|---|
| Current status | Current | Current | Current; successor to DMT152 |
| Best application | Small dryers, glove boxes, compressed air and general OEM integration | Refrigerant dryers and economical dryer-performance monitoring | Very-low-dew-point OEM and industrial applications |
| Calibrated dew-point range | Configuration-dependent; family coverage extends from −70 to +60 °C Td/f | −30 to +50 °C Td/f | −80 to −20 °C Td/f |
| Typical accuracy | Up to ±2 °C Td/f | Up to ±1 °C in the refrigerant-dryer range | ±2 °C from −80 to −40 °C Td/f; ±3 °C from −40 to −20 °C Td/f |
| Sensor technology | DRYCAP® | HUMICAP® | DRYCAP® |
| Pressure capability | Up to 20 bar standard; selected DMT143 configurations up to 50 bar | Up to 20 bar | Up to 50 bar absolute |
| Primary output options | Analog output and RS-485 Modbus RTU | Two-wire 4–20 mA; service RS-485 | Analog output or RS-485 with Modbus RTU |
| Portable and transmitter compatibility | Indigo80 handheld indicator | HM70 or DM70 handheld for spot-checking | Indigo transmitters and Indigo80 handheld indicator |
| Best choice when | You need a small, versatile transmitter for dry industrial gas | You need cost-effective verification of a refrigerant dryer | You need traceable measurement down to −80 °C Td/f with modern connectivity |
Choose by operating range: DMT132 is intended mainly for refrigerant dryers, DMT143/DMT143L provide compact and flexible OEM dew-point measurement, and DMT153 is the current choice for demanding ultra-dry applications down to −80 °C Td/f.
Vaisala DMT153 Supplier and Technical Support in Malaysia
Seacom Process Instruments supplies and supports the Vaisala DMT153 Dew Point Transmitter in Malaysia for battery manufacturing, semiconductor production, pure-gas systems, critical compressed air, glove boxes, dry chambers and OEM equipment.
Our team can assist with measurement-point selection, process connections, sampling cells, analog or Modbus configuration, Indigo transmitter integration, Indigo80 portable use, installation review and calibration planning.
Contact Seacom with your required dew-point range, gas type, process pressure and temperature, connection thread, output signal, equipment layout and calibration requirements so we can recommend a suitable DMT153 configuration.
You might also like
The Vaisala DMT132 is a compact and economical dew-point transmitter designed to verify refrigerant-dryer performance by measuring the actual outlet-air dew point.
- Dew-point measurement range from −30 to +50 °C Td/f
- Accuracy up to ±1 °C in the typical refrigerant-dryer range
- Two-wire, loop-powered 4–20 mA output
- Operating pressure up to 20 bar
- Resistant to condensation and compressor oil
- Optional warning LED and loop-powered display
The Vaisala DMT143 and DMT143L provide compact, dependable dew-point measurement for small industrial dryers, compressed-air systems, glove boxes and OEM equipment.
- Dew-point measurement range across the family from −70 to +60 °C Td/f
- Accuracy up to ±2 °C Td/f
- Vaisala DRYCAP® technology with automatic calibration
- Resistant to condensation, compressor oil and particulate contamination
- Analog output and RS-485 with Modbus RTU options
- Compatible with the Vaisala Indigo80 handheld indicator
15 other products in the same category:
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.
- Former models: DMT341, DMT342, DMT344, DMT347 and DMT348
- Designed for dry rooms, industrial dryers, compressed air and process gases
- Legacy display, data logging, analog, relay and communication options
- Use DMP7 for compact, wall-mounted or tight-space applications
- Use DMP8 for pressurised processes and pipelines
- Pair the selected probe with an Indigo500 transmitter
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
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
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 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
- Rugged IP66 and NEMA 4 metal enclosure
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.
- Dew-point measurement from −70 to +30 °C Td
- Absolute-pressure measurement from 1 to 12 bar
- Pressure-compensated dew point and ppm calculation
- Analog outputs and RS-485 with Modbus RTU
- Contact Seacom for existing-unit support and replacement assessment
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.
- Measures dew point, pressure and temperature
- Calculates SF6 density, normalised pressure and moisture in ppm
- RS-485 communication with Modbus RTU
- Contact Seacom for availability and replacement assessment
The Vaisala DRYCAP® Dew Point Probe DMP6 measures humidity directly inside very hot industrial processes using a robust probe and passive cooling set.
- Direct in-line measurement at process temperatures from +100 to +350 °C
- Dew point measurement range from −25 to +100 °C Td/f
- Passive cooling requires no power, cooling water or moving components
- Built-in Modbus RTU or integration with Vaisala Indigo transmitters
- Connect to Indigo80 for portable display, diagnostics, configuration and field calibration
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 DMT143 and DMT143L provide compact, dependable dew-point measurement for small industrial dryers, compressed-air systems, glove boxes and OEM equipment.
- Dew-point measurement range across the family from −70 to +60 °C Td/f
- Accuracy up to ±2 °C Td/f
- Vaisala DRYCAP® technology with automatic calibration
- Resistant to condensation, compressor oil and particulate contamination
- Analog output and RS-485 with Modbus RTU options
- Compatible with the Vaisala Indigo80 handheld indicator
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 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
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.
- Calibrated dew-point range from −80 to −20 °C Td/f
- Accuracy up to ±2 °C Td/f
- Operating pressure up to 50 bar
- Analog outputs and RS-485 communication
- DRYCAP® sensor resistant to condensation and contamination
- Use DMT153 for new projects
The Vaisala DMT132 is a compact and economical dew-point transmitter designed to verify refrigerant-dryer performance by measuring the actual outlet-air dew point.
- Dew-point measurement range from −30 to +50 °C Td/f
- Accuracy up to ±1 °C in the typical refrigerant-dryer range
- Two-wire, loop-powered 4–20 mA output
- Operating pressure up to 20 bar
- Resistant to condensation and compressor oil
- Optional warning LED and loop-powered display
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.
- DMT345: former solution for processes up to +180 °C
- DMT346: former solution for very hot processes up to +350 °C
- DMT345 replacement: DMP5 with a suitable Indigo transmitter
- DMT346 replacement: DMP6 with a suitable Indigo transmitter
- Direct in-process measurement without a conventional sampling system
- Contact Seacom for mechanical and electrical migration review