The Vaisala HMDW80 Series provides cost-effective humidity and temperature measurement for routine HVAC and building-automation applications.
The Vaisala INTERCAP® HMDW80 Series provides dependable humidity and temperature measurement for standard HVAC and building-automation applications. It is the cost-effective choice for projects where ±3% RH accuracy is suitable and straightforward installation with low maintenance is required.
The family includes HMW80 transmitters for indoor wall mounting, HMD80 transmitters for ventilation ducts and HMS80 transmitters for outdoor measurement. Temperature-only versions, protected wall models for humid locations, optional displays and several electrical-output configurations are available.
| Model family | Installation | Typical application |
|---|---|---|
| HMW80 | Indoor wall mounting | Offices, commercial spaces, plant rooms and general occupied areas |
| HMD80 | Ventilation-duct mounting | Supply air, return air, air-handling units and ventilation ducts |
| HMS80 | Outdoor mounting with radiation protection | Outdoor reference humidity and temperature for HVAC control |
Use the model number to identify the mounting style, measured parameters, electrical output, display and enclosure protection. Models ending in D include a local display, while temperature-only models begin with T.
| Model | Measurement and mounting | Output | Display | Protection / special feature |
|---|---|---|---|---|
| Indoor wall-mounted models | ||||
| HMW82 | Humidity and temperature, wall mounted | 2 × 4–20 mA | No | IP30 |
| HMW82P100 | Humidity and temperature, wall mounted | 2 × 4–20 mA | No | IP30; additional Pt100 sensor |
| HMW83 | Humidity and temperature, wall mounted | 2 × 0–10 V | No | IP30 |
| TMW82 | Temperature only, wall mounted | 1 × 4–20 mA | No | IP30 |
| TMW83 | Temperature only, wall mounted | 1 × 0–10 V | No | IP30 |
| IP65 wall-mounted models for humid or demanding areas | ||||
| HMW87 | Humidity and temperature, wall mounted | Modbus RTU | No | IP65; calculated humidity parameters |
| HMW87D | Humidity and temperature, wall mounted | Modbus RTU | Yes | IP65; calculated humidity parameters |
| HMW88 | Humidity and temperature, wall mounted | 2 × 4–20 mA | No | IP65; calculated humidity parameters |
| HMW88D | Humidity and temperature, wall mounted | 2 × 4–20 mA | Yes | IP65; calculated humidity parameters |
| HMW89 | Humidity and temperature, wall mounted | 2 × 0–10 V | No | IP65; calculated humidity parameters |
| HMW89D | Humidity and temperature, wall mounted | 2 × 0–10 V | Yes | IP65; calculated humidity parameters |
| TMW88 | Temperature only, wall mounted | 1 × 4–20 mA | No | IP65 |
| Ventilation-duct models | ||||
| HMD82 | Humidity and temperature, duct mounted | 2 × 4–20 mA | No | IP65; calculated humidity parameters |
| HMD82D | Humidity and temperature, duct mounted | 2 × 4–20 mA | Yes | IP65; calculated humidity parameters |
| HMD83 | Humidity and temperature, duct mounted | 2 × 0–10 V | No | IP65; calculated humidity parameters |
| HMD83D | Humidity and temperature, duct mounted | 2 × 0–10 V | Yes | IP65; calculated humidity parameters |
| TMD82 | Temperature only, duct mounted | 1 × 4–20 mA | No | IP65 |
| TMD83 | Temperature only, duct mounted | 1 × 0–10 V | No | IP65 |
| Outdoor models | ||||
| HMS82 | Humidity and temperature, outdoor | 2 × 4–20 mA | No | IP65; radiation shield and calculated parameters |
| HMS82C | Humidity and temperature, outdoor | 2 × 4–20 mA | No | IP65; HMS82 with ½-inch NPT conduit fitting |
| HMS83 | Humidity and temperature, outdoor | 2 × 0–10 V | No | IP65; radiation shield and calculated parameters |
| HMS83C | Humidity and temperature, outdoor | 2 × 0–10 V | No | IP65; HMS83 with ½-inch NPT conduit fitting |
| TMS82 | Temperature only, outdoor | 1 × 4–20 mA | No | IP65; radiation shield |
Model-number guide: choose an 82 model for 4–20 mA, an 83 or 89 model for 0–10 V, or HMW87 for Modbus RTU. Select a D version when a local display is required and a C outdoor version when a ½-inch NPT conduit fitting is needed.
The HMDW80 Series measures across the full 0–100% RH range using a field-replaceable Vaisala INTERCAP® sensor. Selected models measure temperature and can provide calculated parameters such as dew point, wet-bulb temperature or enthalpy.
Available configurations include current-output and voltage-output models. The correct transmitter should be selected according to the installation location, required measurement parameters, building-management-system input, display requirement and environmental protection.
Calibration note: the HMDW80 Series is not supplied with a calibration certificate. For projects requiring an included traceable calibration certificate, consider the HMDW110 Series or HMW90 Series.
These Vaisala HVAC transmitter families serve different measurement and control requirements. Choose according to accuracy, mounting location, communication method, calibration documentation and whether carbon-dioxide measurement is required.
| Selection point | Vaisala HMX80 Series | Vaisala HMX110 Series | Vaisala HMW90 Series | Vaisala XMW85 Series |
|---|---|---|---|---|
| Product position | Cost-effective routine HVAC | Balanced high-accuracy HVAC | Premium indoor wall measurement | Smart indoor Modbus and air-quality measurement |
| Measured parameters | Humidity and temperature; temperature-only models available | Humidity and temperature; temperature-only models available | Humidity and temperature; temperature-only models available | Humidity and temperature, with optional CO₂ measurement |
| Humidity accuracy | Up to ±3% RH | Up to ±2% RH | Up to ±1.7% RH | Up to ±3% RH |
| Installation options | Indoor wall, duct, humid-area wall and outdoor | Indoor wall, duct and outdoor | Indoor wall only | Indoor wall only |
| Output and communication | Current or voltage output, depending on model | 4–20 mA or Modbus RTU, depending on model | Current, voltage or Modbus RTU, depending on model | Modbus RTU on all models |
| Local display | Available on selected models | No display on standard models | Available on selected models | Available on selected models |
| Calibration certificate | Not supplied | Traceable certificate included | Traceable certificate included | Confirm according to selected model and project requirement |
| Main reason to choose | Simple, economical measurement across multiple mounting styles | Better accuracy and documentation for demanding HVAC locations | Highest humidity accuracy for an indoor wall transmitter | Modbus integration or combined CO₂, humidity and temperature measurement |
Quick selection: choose the 80 Series for routine HVAC where cost and mounting flexibility are the priorities. Choose the 110 Series when better accuracy and a traceable certificate are required for wall, duct or outdoor measurement. Choose HMW90 for premium indoor wall measurement. Choose XMW85 for indoor Modbus systems, especially when CO₂ must be measured together with humidity and temperature.
Before ordering, confirm whether the measurement point is on a wall, inside a duct, in a humid area or outdoors. Also provide the required humidity and temperature accuracy, electrical output, controller input, display preference, power supply and calculated measurement parameter.
If the project requires Modbus communication, an included calibration certificate or CO₂ measurement, compare the HMDW80 configuration with the 110 Series, HMW90 and XMW85 before finalising the model.
Seacom Process Instruments supplies and supports the Vaisala HMD80, HMW80 and HMS80 HVAC transmitters in Malaysia for commercial buildings, industrial facilities, ventilation systems and building-automation projects.
Our team can assist with mounting style, output signal, display option, calculated parameter, outdoor installation, controller compatibility and model comparison across the Vaisala 80, 110, HMW90 and XMW85 Series.
Contact Seacom with your measurement location, required accuracy, building-management-system interface and project documentation requirements so we can recommend a suitable Vaisala HVAC transmitter.
The Vaisala HMX110 Series provides accurate humidity and temperature measurement for demanding indoor, duct and outdoor HVAC applications.
The Vaisala HMW90 Series provides high-accuracy humidity and temperature measurement for demanding indoor HVAC and controlled-environment applications.
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.
The Vaisala HMX110 Series provides accurate humidity and temperature measurement for demanding indoor, duct and outdoor HVAC applications.
The Vaisala Indigo520 Supervisor manages up to 100 compatible compact humidity and temperature probes through one host unit. It provides local visibility for the maintenance team and Modbus TCP communication for data centre BMS integration.
Expected availability: early 2027. Enquire with Seacom for configuration and delivery confirmation.
The Vaisala HMT370EX provides intrinsically safe humidity and temperature measurement with HMP-series probes. The new DMP370 configuration combines the HMT370EX transmitter with a DMP37X DRYCAP® probe for low-dew-point measurement in hazardous locations.
DMP370 availability: Vaisala plans first deliveries for Q1 2027. Contact Seacom for configuration and project lead time.
The Vaisala HMP60 is a compact, durable and cost-effective humidity and temperature probe for equipment integration, data loggers, incubators, glove boxes, greenhouses and environmental monitoring systems.
It provides 0–100% RH and −40 °C to +60 °C measurement ranges, low power consumption, interchangeable Vaisala INTERCAP sensor and optional Modbus RTU communication.
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.
The Vaisala HMP5 provides high-accuracy humidity and temperature measurement in ovens, dryers, kilns and other processes operating at temperatures up to +180 °C.
The Vaisala HMP9 combines a miniature 5 mm probe head with fast-response, high-accuracy humidity and temperature measurement for tight spaces and rapidly changing environments.
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 HMD60 Series provides high-accuracy humidity and temperature measurement for demanding HVAC ducts and light-industrial applications.
The Vaisala HMM105 provides reliable humidity measurement for integration into environmental chambers, incubators and OEM equipment.
The Vaisala HMP110 is a high-accuracy humidity and temperature probe designed for demanding equipment integration, environmental chambers, data loggers, incubators and controlled-environment applications.
It provides ±1.5% RH accuracy, a 0–100% RH range, −40 °C to +80 °C temperature measurement, a chemically resistant HUMICAP 180R sensor and analog or Modbus RTU output options.
The Vaisala HMP4 provides high-accuracy humidity and temperature measurement in compressed air, breathing air, industrial gases, vacuum systems and other processes operating at pressures up to 100 bar.
The Vaisala MGP261 measures methane, carbon dioxide and humidity directly in raw biogas. Its in-situ design avoids a separate sampling system and helps operators monitor gas quality while protecting downstream equipment.
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.
The Vaisala HMT140 Wi-Fi Data Logger has been discontinued and is no longer recommended for new monitoring systems.
