Indigo200 Series Transmitters for Vaisala smart probes for Vaisala Smart Probes Indigo200 Series Transmitters for Vaisala smart probes for Vaisala Smart Probes
Indigo200 Series Transmitters for Vaisala smart probes for Vaisala Smart Probes

Vaisala Indigo200 Series Transmitters

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

Vaisala Indigo200 Standard Transmitter Platform

The Vaisala Indigo200 Series is the standard and most accessible transmitter platform for one Vaisala Indigo-compatible smart probe. It adds local measurement display, automation outputs, configurable relays, convenient wiring and mechanical support to the intelligence already built into the connected probe.

Choose Indigo201 for analog-output applications or Indigo202 for Modbus RTU communication. Both models support two configurable relays and interchangeable probes for humidity, temperature, dew point, carbon dioxide, moisture in oil and vaporized hydrogen peroxide.

Why Choose Indigo200?

  • Standard Indigo Platform: A practical choice for routine single-probe industrial measurement and control.
  • Plug-and-Play Probe Connection: Connect one compatible smart probe directly or by cable.
  • Local Visualisation: Colour display provides numerical, graphical and device-status views.
  • Output Choice: Indigo201 provides three analog channels; Indigo202 provides RS-485 Modbus RTU.
  • Two Relays: Configurable relays support alarms and simple control functions.
  • Service-Friendly: Detachable probes can be calibrated or exchanged without replacing the host transmitter.
  • Industrial Enclosure: Smooth IP65 housing is suitable for many demanding indoor environments.

Selecting the Correct Indigo Transmitter

TransmitterPositionConnected ProbesMain OutputsBest Fit
Indigo200 Standard One Indigo201: 3 analog + 2 relays; Indigo202: Modbus RTU + 2 relays Normal industrial measurement and control
Indigo300 Intermediate One 3 analog outputs Rugged metal installation with analog signals
Indigo510 Simplified flagship One 2 isolated analog outputs, Ethernet and Modbus TCP Premium single-probe integration
Indigo520 Full flagship Two simultaneously 4 isolated analog outputs, 2 relays, Ethernet and Modbus TCP Advanced dual-probe systems

Selection note: Choose Indigo200 when standard analog or Modbus RTU connectivity is sufficient. Select Indigo300 for a rugged IP66 metal housing and three analog outputs. Move to Indigo510 or Indigo520 when Ethernet, a web interface, galvanically isolated outputs or flagship system capabilities are required.

Indigo201 and Indigo202 Comparison

FeatureIndigo201Indigo202
Primary Application Analog-output systems Digital automation systems
Analog Outputs Three configurable current or voltage channels —
Digital Output — RS-485 Modbus RTU
Relays Two configurable relays Two configurable relays
Display Colour display; non-display version available Colour display
Connected Probes One One

General Specifications

FeatureSpecification
Probe Capacity One Indigo-compatible smart probe
Enclosure IP65
Power Input Nominal 24 V AC/DC according to model specification
Operating Temperature -40 °C to +60 °C without display; -20 °C to +60 °C with display
Probe Installation Direct connection or remote connection using a compatible cable
Configuration Local user interface and supported Vaisala service tools

Compatible Measurement Probes

Probe compatibility can depend on transmitter generation, connection method and firmware. Confirm the complete transmitter, probe and cable configuration before ordering.

Typical Applications

  • Industrial drying and compressed-air systems
  • Incubators, cold storage and controlled environments
  • Industrial HVAC and environmental chambers
  • CO₂ monitoring and safety applications
  • Hydraulic and lubrication-oil monitoring
  • Vaporized-hydrogen-peroxide bio-decontamination

Vaisala Indigo200 Supplier in Malaysia

Seacom Process Instruments supplies and supports Vaisala Indigo201 and Indigo202 transmitters in Malaysia. Contact our team to select the correct probe, output model, display, relay configuration, probe cable and installation accessories.

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Specific References

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Vaisala HMP155 Meteorological Humidity and Temperature Probe

The Vaisala HMP155 provides stable humidity and temperature measurement for automatic weather stations, road-weather systems, airports, research sites and demanding outdoor monitoring.

  • Relative-humidity measurement from 0 to 100 %RH
  • Operating range from −80 to +60 °C
  • HMP155A with two analogue voltage outputs
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  • HMP155E with RS-485 digital output
  • Optional warmed probe, chemical purge and additional temperature sensor
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Vaisala HMP3 General-Purpose Humidity and Temperature Probe

The Vaisala HMP3 is a high-accuracy, field-maintainable probe for industrial HVAC, air-handling units, cleanrooms, paint booths and environmental chambers.

  • Humidity accuracy up to ±0.8% RH
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  • Field-replaceable filter and HUMICAP sensor option
  • Standalone Modbus RTU or Vaisala Indigo transmitter operation
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Vaisala HMP7 High-Humidity and Temperature Probe

The Vaisala HMP7 is designed for continuously humid, rapidly changing and near-condensing environments. Probe heating helps prevent condensation while maintaining reliable process measurement.

  • Humidity accuracy up to ±0.8% RH
  • Probe heating for condensation prevention
  • −70 to +180 °C probe-head measurement range
  • Standalone Modbus RTU or Vaisala Indigo transmitter operation
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Vaisala HMP8 Humidity and Temperature Probe for Pressurised Pipelines

The Vaisala HMP8 provides high-accuracy humidity and temperature measurement in compressed air, refrigerant dryers and pressurised industrial processes up to 40 bar.

  • Humidity accuracy up to ±0.8% RH
  • Operating pressure from vacuum to 40 bar
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Vaisala HMP9 Compact Humidity and Temperature Probe

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.

  • Humidity accuracy up to ±0.8% RH
  • Temperature accuracy up to ±0.1 °C
  • −40 to +120 °C probe-head measurement range
  • Standalone Modbus RTU or Vaisala Indigo transmitter operation
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Vaisala TMP1 High-Accuracy Temperature Probe

The Vaisala TMP1 is a robust temperature-only probe for demanding industrial processes, pharmaceutical applications and calibration laboratories.

  • Temperature measurement range from −70 to +180 °C
  • Accuracy up to ±0.1 °C at +23 °C with standard calibration
  • Pt100 RTD Class F0.1 sensor according to IEC 60751
  • Standalone Modbus RTU over RS-485
  • Compatible with Vaisala Indigo200, Indigo300, Indigo500 and Indigo80
  • Traceable two-point calibration certificate included
  • Ask Seacom about the suitable TMP1 configuration
Vaisala MMP8 Moisture in Oil and Temperature Probe

Vaisala MMP8 Moisture in Oil and Temperature Probe

The Vaisala MMP8 provides continuous online measurement of dissolved moisture and temperature in transformer oil, lubrication oil, hydraulic fluid and other liquid hydrocarbons.

  • Measures water activity from 0 to 1 aw, relative saturation, temperature and ppmw
  • Dry-end accuracy up to ±0.01 aw or ±1%RS
  • Temperature measurement from −40 to +180 °C
  • Available in standard 262 mm and long 448 mm probe versions
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Vaisala DMP5 Dew Point Probe for Processes up to 180 °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
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  • Built-in Modbus RTU or integration with Vaisala Indigo transmitters
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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
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Vaisala DMP8 Dew Point Probe for Pressurised Pipelines

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

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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
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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.

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  • Two two-wire 4–20 mA outputs
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DMP370 availability: Vaisala plans first deliveries for Q1 2027. Contact Seacom for configuration and project lead time.

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The Vaisala HMP3 is a high-accuracy, field-maintainable probe for industrial HVAC, air-handling units, cleanrooms, paint booths and environmental chambers.

  • Humidity accuracy up to ±0.8% RH
  • Temperature measurement from −40 to +120 °C
  • Field-replaceable filter and HUMICAP sensor option
  • Standalone Modbus RTU or Vaisala Indigo transmitter operation
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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
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  • Current or voltage output configurations
  • Replaceable INTERCAP® humidity sensor
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Vaisala GMW90 Series CO₂, Temperature and Humidity Transmitters

The Vaisala GMW90 Series provides stable wall-mounted carbon-dioxide and temperature measurement, with optional humidity, for demanding HVAC and building-automation applications.

  • Carbon-dioxide measurement from 0 to 5000 ppm
  • CO₂ accuracy up to ±(30 ppm + 2% of reading)
  • Temperature measurement from −5 to +55 °C
  • Optional HUMICAP® relative-humidity measurement from 0 to 95 %RH
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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
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Vaisala HMP8 Humidity and Temperature Probe for Pressurised Pipelines

The Vaisala HMP8 provides high-accuracy humidity and temperature measurement in compressed air, refrigerant dryers and pressurised industrial processes up to 40 bar.

  • Humidity accuracy up to ±0.8% RH
  • Operating pressure from vacuum to 40 bar
  • Adjustable insertion depth with two probe lengths
  • Optional ball valve for insertion and removal under process conditions
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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.

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
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Smart Humidity and Temperature Probe for wall mounting HMP1

Vaisala HMP1 Wall-Mounted Humidity and Temperature Probe

The Vaisala HMP1 is a high-accuracy, interchangeable humidity and temperature probe for indoor spaces. It connects directly to an Indigo200 or Indigo300 transmitter to create a compact wall-mounted measurement system.

  • Humidity accuracy up to ±1.0% RH
  • Temperature accuracy up to ±0.2 °C
  • 0–100% RH and −40 to +60 °C measurement ranges
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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 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
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