Vaisala

Authorised Vaisala Distributor in Malaysia

Seacom is an authorised Vaisala distributor in Malaysia for industrial measurement instruments and continuous monitoring systems. We supply humidity and temperature sensors, dew point meters and transmitters, CO₂ instruments, pressure instruments, moisture-in-oil probes, biogas instruments, weather and wind sensors and continuous monitoring systems related products.

Choosing an instrument starts with understanding the application. Apart from the measuring range, we need to consider the operating conditions, installation and connection to your existing system. Our team can help you check these details and select a suitable model.

If you are replacing an existing instrument, send us a clear photo of the model label and the complete order code. For a new installation, share your application or project specification so we can review the requirements with you.

Our Vaisala Range and Local Support

We support customers across Malaysia in pharmaceutical manufacturing, semiconductor production, battery manufacturing, data centres, HVAC and general industry. Some enquiries involve a single replacement probe; others involve instruments and monitoring points for a complete facility. In either case, the selection should match the actual site requirements.

  • settings_input_component Industrial transmitters and probes Measure humidity, temperature, dew point, CO₂ and pressure at the required point, with suitable outputs to the control or monitoring system.
  • work Portable measurement instruments Carry out checks at different locations during commissioning, maintenance and troubleshooting.
  • storage Continuous Monitoring Systems Record conditions, manage alarms and review historical data using Vaisala viewLinc.
  • domain Controlled-environment monitoring Monitor cleanrooms, laboratories, warehouses, refrigerators and freezers according to the conditions required.
  • ac_unit HVAC and building measurement Provide humidity, temperature, CO₂ and differential-pressure readings for room and air-handling control.
  • invert_colors Moisture-in-oil measurement Measure dissolved moisture and temperature in compatible lubrication, hydraulic and transformer oils.
  • nature Biogas and biomethane measurement Measure methane, CO₂ and humidity in suitable raw-biogas and upgrading applications.
  • wb_sunny Weather and wind measurement Measure outdoor conditions with weather transmitters and ultrasonic wind sensors suited to the installation.

Vaisala Products and Instrument Families

The categories below cover our main Vaisala instruments. Click the heading to view the products, or send us your requirements if you need help comparing the models.

Vaisala humidity sensor and transmitter Malaysia
Humidity and temperature

Humidity Sensors and Transmitters

For room, duct, cleanroom and process measurement, select Vaisala humidity and temperature transmitters or humidity probes according to the conditions at the sensing point. Check the temperature range, expected humidity, mounting arrangement and signal required by the receiving system.

Product families: HMP, HMD, HMW and XMP instruments, Origo10 transmitters and compatible Vaisala Indigo instruments.

View humidity instruments →
Vaisala dew point meter and transmitter Malaysia
Dew point

Dew Point Meters and Transmitters

For compressed air, dryers, dry rooms and process gases, the required dew point is an important starting point. We also need to check the line pressure and sampling arrangement. Use a fixed transmitter for continuous measurement or a portable meter for checks at several points.

Product families: DMP probes and DMT transmitters, with the model selected for the measuring range and installation conditions.

View dew point instruments →
Vaisala viewLinc Continuous Monitoring System Malaysia
Continuous monitoring

Vaisala viewLinc Continuous Monitoring System

Vaisala viewLinc brings readings, alarms and historical records into one monitoring system. For GxP applications, involve QA when defining the records, access permissions and qualification requirements. These should be agreed as part of the system scope.

System components: viewLinc software, RFL100 loggers, AP10 access points, VDL200 PoE loggers and CAB100 cabinets, selected according to the monitoring points and connections required.

Explore viewLinc CMS →
Vaisala Indigo80 portable humidity dew point and carbon dioxide meter
Portable measurement

Vaisala Portable Measurement Instruments

A portable instrument is useful for commissioning, maintenance checks and investigating unusual readings. The probe and accessories are as important as the handheld unit, particularly when measuring compressed air or taking readings at difficult locations.

Portable options: Indigo80 with compatible humidity, dew point or CO₂ probes. For an existing meter, provide the instrument and probe model numbers so compatibility can be checked.

View portable instruments →
Vaisala carbon dioxide sensor and transmitter Malaysia
Gas measurement

CO₂, Hydrogen Peroxide and Biogas Measurement

Ventilation systems, incubators, bio-decontamination equipment and biogas processes require different gas measurements. Confirm the gas, concentration range and operating conditions before selecting the probe.

Product families: GMP CO₂ probes, HPP hydrogen peroxide probes and MGP biogas probes. The parameters measured depend on the selected model.

View Vaisala gas instruments →
Vaisala pressure transmitter and barometer Malaysia
Pressure

Barometric and Differential Pressure Instruments

Barometric pressure and differential pressure serve different applications. For cleanroom pressure monitoring, check the pressure relationship and range between the two spaces. For atmospheric pressure, select a suitable barometer.

Product families: PTB barometers and PDT differential-pressure transmitters for suitable weather, laboratory, cleanroom and HVAC applications.

View pressure instruments →
Vaisala moisture in oil probe and transmitter Malaysia
Moisture in oil

Moisture-in-Oil Probes and Instruments

Moisture-in-oil measurement helps track the condition of compatible oils during operation. Instrument selection depends on the oil type, temperature, pressure and available connection. These details should be checked before deciding on the probe.

Product families: MMP moisture-in-oil probes and suitable portable configurations. Confirm compatibility with the oil and the measurement required.

View moisture-in-oil instruments →
Vaisala weather transmitter and WMT700 wind sensor Malaysia
Weather and wind

Weather Transmitters and Ultrasonic Wind Sensors

For outdoor installations, consider both the weather parameters and the conditions at the mounting point. Exposure, mounting position and the connection to your system should be reviewed together with the instrument selection.

Product families: WXT530 Series weather transmitters and WMT700 ultrasonic wind sensors.

View weather instruments →

Vaisala Applications in Malaysia

The same measurement parameter can serve different purposes from one site to another. These application guides explain where the instruments are used and what to check during selection.

local_hospital

Pharmaceutical — GxP Environmental and Process Monitoring

Measure environmental and process conditions in cleanrooms, production areas, storage and equipment. Define what each transmitter will measure, then review the records and alarms required from viewLinc CMS. The GxP scope should be agreed with the engineering and QA teams.

memory

Semiconductor — Critical Moisture and Process Measurement

Critical moisture measurement may be required in dry gases, drying processes and production equipment, alongside cleanroom humidity, temperature and pressure. Select low-dew-point instruments according to the process limits, pressure and installation arrangement.

battery_charging_full

Battery Manufacturing — Dry Rooms and Drying Processes

Dry rooms and drying processes need measurements that cover the specified moisture limits. Select suitable dew point instruments, and review the monitoring locations together with temperature and pressure requirements.

dns

Data Centres — Air and Cooling Measurement

Measure air conditions in server rooms, aisles and ventilation systems using suitable humidity and temperature instruments. Vaisala options also include differential-pressure measurement and TMI110 for cooling-water temperature. Select each instrument for its part of the air or cooling system.

ac_unit

HVAC — Room, Duct and Building Measurement

Room and duct instruments provide the readings used by the building control system. Choose HVAC humidity instruments, temperature sensors, CO₂ transmitters and pressure instruments according to the location, required accuracy and BMS interface.

settings_input_component

Compressed Air — Dew Point and Dryer Monitoring

Dew point measurement helps the maintenance team check air dryness and dryer performance. Consider the dryer type, working pressure and required dew point when selecting the instrument. Our portable dew point measurement guide covers checks at different points in the system.

invert_colors

Oil Moisture — Maintenance and Process Measurement

Use suitable moisture-in-oil instruments to follow dissolved moisture and temperature in compatible lubrication, hydraulic or transformer oils. Review the readings against the equipment conditions and maintenance requirements.

nature

Biogas and Biomethane Measurement

Raw-biogas measurement and methane-slip measurement in upgrading offgas require different probe capabilities. Confirm the gas composition, concentration range and process conditions before selecting the instrument.

wb_sunny

Weather and Wind Monitoring

For exposed sites, the mounting position and installation conditions affect the measurement. Select suitable weather and wind instruments for the parameters required, and review how the readings will reach the monitoring system.

Portable Meter or Permanent Transmitter?

The choice depends on how often you need the reading and what you will do with it.

settings

Permanent Transmitter

A fixed transmitter remains at the measurement point and sends readings to a suitable control or monitoring system. Choose this arrangement when the process needs continuous measurement. Recording and alarms depend on the connected equipment and configuration.

work

Portable Meter

A portable meter is suitable for periodic checks, commissioning and troubleshooting at several locations. Select the probe and sampling accessories for the application, and allow the reading to stabilise before making a comparison.

Read the portable dew point meter guide →

Replacing an Existing Vaisala Instrument

When replacing an older Vaisala instrument, check more than the model series. The measuring range, output, power supply, process connection and probe dimensions all need to suit the existing installation.

For example, DMT153 can be considered when reviewing a DMT152 replacement. An older DMT340-series installation may require a suitable DMP probe with a compatible Indigo transmitter. The replacement arrangement depends on the complete model code and configuration.

Send us a clear photo of the instrument label and, if available, the existing specification or wiring details. This helps us check the suitable replacement and identify any installation changes before you order.

Information to Include with Your Enquiry

Send the information you have available. The following details help us select the instrument and prepare a more accurate quotation:

  • straighten What you need to measure, the operating range and required accuracy.
  • place The application, the medium being measured and the installation location.
  • whatshot The process temperature, pressure and any condensation or cleaning exposure.
  • power The available power supply and the signal or communication required by your system.
  • build The probe length, mounting connection and cable length required.
  • description Any calibration, alarm, monitoring, qualification or documentation requirements.
  • label The complete model and order code if you are replacing an existing instrument.
Vaisala products and projects in Malaysia

Discuss Your Vaisala Requirements with Seacom

Contact Seacom with your Vaisala model number, application details or project specification. We can review the instrument selection, check the required accessories and prepare a quotation.

For contractors and project teams, please include the quantities, required delivery date and relevant specification. Let us know if supporting documents are needed for submission so these can be reviewed with the quotation requirements.

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Vaisala HMT360 Intrinsically Safe Humidity and Temperature Transmitter – Discontinued

Vaisala HMT360 Intrinsically Safe Humidity and Temperature Transmitter – Discontinued

The Vaisala HMT360 Series was an intrinsically safe transmitter platform for humidity, temperature and moisture measurement in hazardous areas. It is discontinued and replaced by the Vaisala HMT370EX with an application-specific probe.

  • HMT361 wall mounting → HMP371
  • HMT363 ducts and confined spaces → HMP373
  • HMT364 high pressure and vacuum → HMP374
  • HMT365 high temperature → HMP375
  • HMT367 high humidity → HMP377
  • HMT368 pressurised pipelines → HMP378
Vaisala HMT330 Humidity and Temperature Transmitter Series – Discontinued

Vaisala HMT330 Humidity and Temperature Transmitter Series – Discontinued

The Vaisala HMT330 Series was a flagship industrial transmitter platform for humidity, temperature and calculated moisture parameters. It is discontinued and replaced by an Indigo500 transmitter with the HMP probe selected for the application.

  • HMT331 wall mounting → HMP1 with Indigo500
  • HMT333 ducts and tight spaces → HMP3 or HMP9 with Indigo500
  • HMT334 high pressure and vacuum → HMP4 with Indigo500
  • HMT335 high temperature → HMP5 with Indigo500
  • HMT337 high humidity → HMP7 with Indigo500
  • HMT338 pressurised pipelines → HMP8 with Indigo500
Vaisala HMD80, HMW80 and HMS80 HVAC Humidity Transmitters

Vaisala HMD80, HMW80 and HMS80 HVAC Humidity Transmitters

The Vaisala HMDW80 Series provides cost-effective humidity and temperature measurement for routine HVAC and building-automation applications.

  • Humidity accuracy up to ±3% RH
  • Wall, duct and outdoor installation models
  • Current or voltage output configurations
  • Replaceable INTERCAP® humidity sensor
Vaisala HMW90 High-Accuracy Humidity and Temperature Transmitter

Vaisala HMW90 High-Accuracy Humidity and Temperature Transmitter

The Vaisala HMW90 Series provides high-accuracy humidity and temperature measurement for demanding indoor HVAC and controlled-environment applications.

  • Humidity accuracy up to ±1.7% RH
  • Analog or Modbus RTU output models
  • Optional display and configurable relay
  • Replaceable measurement module with calibration certificate
Vaisala DM70 Portable Dew Point Meter – Discontinued

Vaisala DM70 Portable Dew Point Meter – Discontinued

The Vaisala DM70 was a portable meter for dew-point spot checks, process measurements and data logging. It is discontinued and replaced for general dew-point work by the Vaisala Indigo80 handheld indicator with a DMP80A or DMP80B probe.

  • Legacy DMP74A, DMP74B and SF₆-specific DMP74C probe options
  • Direct or sampled measurement in pressurised processes
  • Portable numerical and graphical display with data logging
  • Current replacement: Indigo80 with DMP80A or DMP80B
  • DMP80A for moderate dew points down to −40 °C Td/f
  • DMP80B for dry applications down to −70 °C Td/f
Vaisala HM70 Portable Humidity and Temperature Meter – Discontinued

Vaisala HM70 Portable Humidity and Temperature Meter – Discontinued

The Vaisala HM70 was a handheld meter for humidity and temperature spot checks, field measurements, data logging and verification of installed Vaisala instruments. It is discontinued and replaced by the Vaisala Indigo80 handheld indicator with an HMP80 probe.

  • Legacy MI70 handheld indicator with HMP75, HMP76 or HMP77 probe
  • Relative-humidity measurement from 0 to 100 %RH
  • Probe-dependent temperature measurement from −70 to +180 °C
  • Numerical and graphical display with portable data recording
  • Current replacement: Indigo80 with HMP80N or HMP80L
  • HMP80N for general measurements; HMP80L for extended temperature reach
Vaisala DPT146 Dew Point and Pressure Transmitter – Discontinued

Vaisala DPT146 Dew Point and Pressure Transmitter – Discontinued

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
Vaisala HMT120 and HMT130 Transmitters – Are Being Replaced by Origo10

Vaisala HMT120 and HMT130 Transmitters – Are Being Replaced by Origo10

The Vaisala HMT120 and HMT130 provide accurate, stable humidity and temperature measurement for cleanrooms, laboratories, data centres and demanding HVAC applications.

Product transition: HMT120/HMT130 are expected to be phased out. For new projects, the Vaisala Origo10 is the recommended replacement platform.

  • Humidity accuracy up to ±1.5% RH
  • HMT120 loop-powered 4–20 mA output
  • HMT130 voltage outputs, RS-485 and relay
  • Interchangeable fixed or remote measurement probe
  • Origo10 recommended for new installations
Vaisala PTU300 Pressure, Humidity and Temperature Transmitter – Discontinued

Vaisala PTU300 Pressure, Humidity and Temperature Transmitter – Discontinued

The Vaisala PTU300 combined barometric pressure, relative humidity and temperature in one transmitter. The series is discontinued and has been replaced by a suitable Indigo520 barometric-pressure configuration with an application-specific HMP probe.

  • Legacy three-in-one pressure, humidity and temperature transmitter
  • PTU301, PTU303, PTU304, PTU305, PTU307 and PTU308 variants
  • Former applications include laboratories, meteorology and semiconductor measurement
  • Current replacement platform: Indigo520 with barometric-pressure measurement
  • Humidity probe selected according to mounting and process conditions
  • Existing wiring, outputs and process connections require migration review
Vaisala HM40 Portable Humidity and Temperature Meter

Vaisala HM40 Portable Humidity and Temperature Meter

The compact Vaisala HM40 Series provides reliable humidity and temperature spot checks for HVAC, construction, warehouses, laboratories, museums and industrial applications.

  • Humidity accuracy up to ±1.5% RH
  • HM41, HM42, HM45 and HM46 probe configurations
  • Numeric, statistical and graphical trend displays
  • Traceable calibration certificate included
Vaisala HMM105 Digital Humidity Module for Environmental Chambers

Vaisala HMM105 Digital Humidity Module for Environmental Chambers

The Vaisala HMM105 provides reliable humidity measurement for integration into environmental chambers, incubators and OEM equipment.

  • 0–100% RH measurement range
  • I2C output for relative humidity or dew point
  • Detachable 12 mm probe with 300 mm flexible cable
  • Probe withstands +180 °C continuously and +200 °C temporarily
Vaisala HMT140 Wi-Fi Data Logger – Discontinued, Replaced by RFL100

Vaisala HMT140 Wi-Fi Data Logger – Discontinued, Replaced by RFL100

The Vaisala HMT140 Wi-Fi Data Logger has been discontinued and is no longer recommended for new monitoring systems.

  • Primary replacement: Vaisala RFL100 with AP10 VaiNet Access Point
  • Existing HMT140 installations can continue to be supported
  • Migration should be checked against the existing sensor and input type
  • Contact Seacom for replacement selection and viewLinc compatibility
Vaisala DL4000 Universal Input Data Logger for viewLinc CMS

Vaisala DL4000 Universal Input Data Logger for viewLinc CMS

The Vaisala DL4000 records current or voltage signals from industrial transmitters and brings pressure, flow, level, pH, moisture, gas concentration and other process measurements into viewLinc.

  • Scheduled for future discontinuation; confirm availability before specifying
  • Closest current substitute: Vaisala VDL200 with ANP115 analog input probe
  • Available with 1, 2 or 4 analog input channels
  • Supports 0–20 mA, 0–5 V DC or 0–10 V DC models
  • 120,000-sample onboard memory and a 10-year battery
Temperature And RH Data Logger (CMS, FDA Approved) DL2000

Vaisala DL2000 Temperature and Humidity Data Logger

The Vaisala DL2000 combines precision temperature and relative-humidity monitoring with optional analog or door-contact inputs for viewLinc systems.

  • Scheduled for future discontinuation; confirm availability before specifying
  • Current replacement platform: Vaisala VDL200 with suitable smart probes
  • Internal temperature and relative-humidity measurement
  • Optional current, voltage or Boolean input configurations
  • Onboard memory and a typical 10-year battery life
Vaisala DMT143 and DMT143L Miniature Dew Point Transmitters

Vaisala DMT143 and DMT143L Miniature Dew Point Transmitters

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
Vaisala DMT152 Dew Point Transmitter – Discontinued

Vaisala DMT152 Dew Point Transmitter – Discontinued

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
Vaisala DMT132 Dew Point Transmitter for Refrigerant Dryers

Vaisala DMT132 Dew Point Transmitter for Refrigerant Dryers

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
Vaisala DMT345 and DMT346 High-Temperature Dew Point Transmitters – Discontinued

Vaisala DMT345 and DMT346 High-Temperature Dew Point Transmitters – Discontinued

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
Vaisala DMT340 Dew Point and Temperature Transmitter – Discontinued

Vaisala DMT340 Dew Point and Temperature Transmitter – Discontinued

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
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