Humidity and Temperature Meter Series HMT330
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HMT330 Series Humidity and Temperature Transmitters For Demanding Humidity Measurement Features • Full 0 ... 100 %RH measurement, temperature range up to +180 °C (+356 °F) depending on model • Pressure tolerance up to 100 bar depending on model • 4th generation Vaisala HUMICAP® sensor for superior accuracy and stability • Corrosion-resistant IP65/IP66 housing • Excellent performance in harsh conditions; good chemical tolerance • Traceable calibration for measurement and analog outputs (certificates included) • 10-year warranty when annually calibrated at the Vaisala Service Center Vaisala HMT330 Series HUMICAP® Humidity and Temperature Transmitters are designed for demanding industrial applications where stable measurements and extensive customization are essential. With multiple options to choose from, the instrument can be tailored to meet the specific needs of each individual application and is pre-configured for each delivery. Proven Vaisala HUMICAP Performance The HMT330 series incorporates Vaisala's 40 years of experience in industrial humidity measurement. The updated fourth-generation HUMICAP® sensor provides accurate and stable measurement even in environments with high humidity or chemical contaminants. Wide Range of Installation Options The wide variety of measurement probes, several installation accessories, and universal mains and DC power options make the instruments easy to install in various locations and kinds of environment; walls, poles, pipelines, and ducts, for example. The input/output cable can be fed through the back of the transmitter, which is a useful feature, especially for cleanroom installations. The HMT330 series includes six models: • HMT331 for wall-mounted applications • HMT333 for ducts and tight spaces • HMT334 for high-pressure and vacuum applications • HMT335 for high-temperature applications • HMT337 for high-humidity applications • HMT338 for pressurized pipelines With multiple options to choose from, including local display, the HMT330 series can be tailored to meet the specific needs of each individual application and is preconfigured for each delivery. Also the HUMICAP® sensor itself can be selected according to specific measurement application needs. • RS-232/485/422 LAN • Modbus protocol support (RTU/ TCP) • Optional graphical display and keypad for convenient operation • Multilingual user interface • Compatible with Vaisala viewLin

Graphical Display of Measurement Data and Trends for Convenient Operation The HMT330 series features an optional numerical and graphical display with a multilingual menu and keypad. It allows users to easily monitor operational data, measurement trends, and access measurement history of up to 4 years. The display shows measurement trends and over four years of realtime measurement history. The display alarm allows any measured parameter to be tracked, with freely configurable low and high limits. Versatile Outputs and Data Collection The HMT330 can support up to three analog outputs; an...

Measurement Performance Relative Humidity Measurement range 0 ... 100 %RH Factory calibration uncertainty 3) ±0.6 %RH (0 ... 40 %RH) Humidity sensor types HUMICAP® 180 HUMICAP® 180C HUMICAP® 180R HUMICAP® 180RC HUMICAP® 180VC Response time (90 %) with HUMICAP® 180 or 180C sensor at +20 °C (+68 °F) in still air with grid filter 8 s with grid + steel netting filter 20 s with sintered filter 40 s Response time (90 %) with HUMICAP® 180R, 180RC, or 180VC sensor at +20 °C (+68 °F) in 0.1 m/s air flow with grid filter 17 s with grid + steel netting filter 50 s with sintered filter 60 s Accuracy...

Mounting Options Inputs and Outputs Operating Voltage Menu Languages English, Chinese, Finnish, French, German, Japanese, Russian, Spanish, Swedish Mounting with Wall Mounting Kit (not Mounting with DIN Rail Installation Kit mandatory for wall installations) Pole Installation with Installation Kit for Mounting Rain Shield with Installation Pole or Pipeline Kit

Typical Applications • Cleanrooms • Pharmaceutical processes • Indoor swimming pools • Data centers • Archives Vaisala HUMICAP® Humidity and Temperature Transmitter HMT331 is a high-quality wall-mounted transmitter for demanding HVAC and condition-monitoring applications. Temperature measurement range -40 ... +60 °C (-40 ... +140 °F) HMT331 with short cable probe Dimensions in mm (inches)Accessories USB service port cable with PC 219916 software Connection cable for HM70 211339 Wall-mounting plate (plastic) 214829 Pole installation kit with rain shield 215109 DIN rail installation set...

• Cleanrooms • Industrial HVAC systems • Environmental chambers • Processes with moderate temperature and humidity Vaisala HUMICAP® Humidity and Temperature Transmitter HMT333 is a versatile instrument for applications where a small remote probe is needed, for example in demanding HVAC applications. Its small thermal mass enables rapid response to temperature changes. Flexible Installation To install the probe in ducts, channels, and through walls, an installation kit is available with a stainless steel flange, lead-through piece, and steel support bar. HMT333 has two probe cable options -...

Typical Applications • Test chambers • High-pressure and vacuum processes Vaisala HUMICAP® Humidity and Temperature Transmitter HMT334 is designed for humidity measurement in pressurized spaces or vacuum chambers. Every probe is tested for gas and vacuum-tight installation. Technical Data Temperature measurement range -70 ... +180 °C (-94 ... +356 °F) USB service port cable with PC 219916 software Connection cable for HM70 211339 Wall-mounting plate (plastic) 214829 Pole installation kit with rain shield 215109 PPS plastic grid filter with stainless DRW010281SP steel net PPS plastic grid...