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{"id":5575374533,"title":"Vaisala HMT331 Humidity and Temperature Transmitter for Wall Mounting","handle":"hmt331-humidity-and-temperature-transmitter-for-wall-mounting","description":"\u003cp\u003eThe HMT331 is the top-of-the-line wall-mounted transmitter for demanding HVAC and condition monitoring applications. The Vaisala HUMICAP® Humidity and Temperature Transmitter HMT330 series incorporates Vaisala’s 40 years of experience in industrial humidity measurement.\u003c\/p\u003e\n\u003cp\u003eThe instrument offers a wide variety of different psychrometric units, including dew point, enthalpy, wet bulb temperature, absolute humidity, and mixing ratio.\u003c\/p\u003e\n\u003cp\u003eThe transmitter has a keypad and a large graphical display for convenient monitoring of the reading and transmitter setting changes. For example both output signal type (voltage or current) and scaling can easily be changed by the user.\u003c\/p\u003e\n\u003cp\u003eAnalog outputs are preset at the factory to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChannel 1: 4…20 mA = 0...100% RH\u003c\/li\u003e\n\u003cli\u003eChannel 2: 4...20 mA = -40...+60°C (-40...+140°F) T\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCalibration certificate (ISO9001 compliant, traceable to NIST)\u003c\/li\u003e\n\u003cli\u003eM20x1.5 cable gland and NPT1\/2\" conduit fitting included to facilitate wiring\u003c\/li\u003e\n\u003cli\u003eUser's Guide in English\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e***Also available with a Short Cable***\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003cstrong\u003eMeasurement parameter(s)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003eRelative humidity\u003cbr\u003eTemperature\u003cbr\u003eAbsolute humidity\u003cbr\u003eDew point temperature\u003cbr\u003eEnthalpy\u003cbr\u003eMixing ratio\u003cbr\u003eWater vapor pressure\u003cbr\u003eWet bulb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 ... 100 % RH\u003cbr\u003e-40 ... +60 °C (-40 ... +140 °F) T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0 % RH (0 ... 90 % RH)\u003cbr\u003e±1.7 % RH (90 ... 100 % RH)\u003cbr\u003e±0.2 °C (±0.36 °F) T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 ... +60 °C (-40 ... +140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 ... 35 VDC, 24 VAC ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003e4 ... 20 mA (default setting)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 20 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 1 V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 5 V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 10 V\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDigital outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS-232\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing classification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP65 (NEMA 4)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Vaisala Brochure Humidity \u0026amp; Temperature Transmitter Series\" href=\"http:\/\/www.vaisala.com\/Vaisala%20Documents\/Brochures%20and%20Datasheets\/HMT330-Datasheet-B210951EN-I.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/files\/Download_Data_Sheet_button_large.png?13661545862375832803\"\u003e\u003c\/a\u003e               \u003ca title=\"Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT330 via Acorn Scientific\" href=\"https:\/\/www.youtube.com\/watch?v=3FvV5a2GfdY\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/files\/Watch_Video_Button_large.png?8559538604264496309\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2016-05-06T13:32:00+12:00","created_at":"2016-05-06T13:50:45+12:00","vendor":"Vaisala","type":"Data Logging \/ Measurement","tags":["brand_Vaisala","category_Temp \u0026 Humidity","Type_Devices"],"price":0,"price_min":0,"price_max":0,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":17599143237,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HMT331","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Vaisala HMT331 Humidity and Temperature Transmitter for Wall Mounting","public_title":null,"options":["Default Title"],"price":0,"weight":0,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"deny","barcode":""}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/products\/HMT3301.jpg?v=1462499447"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/products\/HMT3301.jpg?v=1462499447","options":["Title"],"content":"\u003cp\u003eThe HMT331 is the top-of-the-line wall-mounted transmitter for demanding HVAC and condition monitoring applications. The Vaisala HUMICAP® Humidity and Temperature Transmitter HMT330 series incorporates Vaisala’s 40 years of experience in industrial humidity measurement.\u003c\/p\u003e\n\u003cp\u003eThe instrument offers a wide variety of different psychrometric units, including dew point, enthalpy, wet bulb temperature, absolute humidity, and mixing ratio.\u003c\/p\u003e\n\u003cp\u003eThe transmitter has a keypad and a large graphical display for convenient monitoring of the reading and transmitter setting changes. For example both output signal type (voltage or current) and scaling can easily be changed by the user.\u003c\/p\u003e\n\u003cp\u003eAnalog outputs are preset at the factory to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChannel 1: 4…20 mA = 0...100% RH\u003c\/li\u003e\n\u003cli\u003eChannel 2: 4...20 mA = -40...+60°C (-40...+140°F) T\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCalibration certificate (ISO9001 compliant, traceable to NIST)\u003c\/li\u003e\n\u003cli\u003eM20x1.5 cable gland and NPT1\/2\" conduit fitting included to facilitate wiring\u003c\/li\u003e\n\u003cli\u003eUser's Guide in English\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e***Also available with a Short Cable***\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003cstrong\u003eMeasurement parameter(s)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003eRelative humidity\u003cbr\u003eTemperature\u003cbr\u003eAbsolute humidity\u003cbr\u003eDew point temperature\u003cbr\u003eEnthalpy\u003cbr\u003eMixing ratio\u003cbr\u003eWater vapor pressure\u003cbr\u003eWet bulb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 ... 100 % RH\u003cbr\u003e-40 ... +60 °C (-40 ... +140 °F) T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0 % RH (0 ... 90 % RH)\u003cbr\u003e±1.7 % RH (90 ... 100 % RH)\u003cbr\u003e±0.2 °C (±0.36 °F) T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 ... +60 °C (-40 ... +140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 ... 35 VDC, 24 VAC ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003e4 ... 20 mA (default setting)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 20 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 1 V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 5 V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0 ... 10 V\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDigital outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS-232\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing classification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP65 (NEMA 4)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Vaisala Brochure Humidity \u0026amp; Temperature Transmitter Series\" href=\"http:\/\/www.vaisala.com\/Vaisala%20Documents\/Brochures%20and%20Datasheets\/HMT330-Datasheet-B210951EN-I.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/files\/Download_Data_Sheet_button_large.png?13661545862375832803\"\u003e\u003c\/a\u003e               \u003ca title=\"Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT330 via Acorn Scientific\" href=\"https:\/\/www.youtube.com\/watch?v=3FvV5a2GfdY\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/files\/Watch_Video_Button_large.png?8559538604264496309\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e"}

Vaisala HMT331 Humidity and Temperature Transmitter for Wall Mounting

Product Description

The HMT331 is the top-of-the-line wall-mounted transmitter for demanding HVAC and condition monitoring applications. The Vaisala HUMICAP® Humidity and Temperature Transmitter HMT330 series incorporates Vaisala’s 40 years of experience in industrial humidity measurement.

The instrument offers a wide variety of different psychrometric units, including dew point, enthalpy, wet bulb temperature, absolute humidity, and mixing ratio.

The transmitter has a keypad and a large graphical display for convenient monitoring of the reading and transmitter setting changes. For example both output signal type (voltage or current) and scaling can easily be changed by the user.

Analog outputs are preset at the factory to:

  • Channel 1: 4…20 mA = 0...100% RH
  • Channel 2: 4...20 mA = -40...+60°C (-40...+140°F) T

The package includes:

  • Calibration certificate (ISO9001 compliant, traceable to NIST)
  • M20x1.5 cable gland and NPT1/2" conduit fitting included to facilitate wiring
  • User's Guide in English

***Also available with a Short Cable***

 Measurement parameter(s) Relative humidity
Temperature
Absolute humidity
Dew point temperature
Enthalpy
Mixing ratio
Water vapor pressure
Wet bulb
Measurement range 0 ... 100 % RH
-40 ... +60 °C (-40 ... +140 °F) T
Measurement accuracy ±1.0 % RH (0 ... 90 % RH)
±1.7 % RH (90 ... 100 % RH)
±0.2 °C (±0.36 °F) T
Operating temperature -40 ... +60 °C (-40 ... +140 °F)
Operating voltage 10 ... 35 VDC, 24 VAC ±20%
Analog outputs 4 ... 20 mA (default setting)
0 ... 20 mA
0 ... 1 V
0 ... 5 V
0 ... 10 V
Digital outputs RS-232
Housing classification IP65 (NEMA 4)

 

 

               

 

This product is available upon request. Contact us for more information.