Weschler Instruments – Manufacturer & distributor of measurement & control equipment
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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Vaisala Humidity & Temperature Transmitters

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Vaisala Humidity & Temperature Transmitters

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  • Measure humidity, temperature, dew point, mixing ratio, absolute humidity and wet bulb temperature
  • Small sensor head for use in tight spaces
  • Small sensor mass for fast response
  • Graphical display shows trends & 1 year history
  • Analog & alarm relay outputs
  • Corrosion resistant NEMA 4 (IP65) housing
  • Single point field calibration
The HMT333 Transmitter is a full featured front end for industrial and commercial humidity measurements. The HMT333 sensor provides accurate reading with excellent long-term stability, over the entire temperature range. The sensor is immune to particle contamination and most chemicals. A chemical purge to clean the sensor (via heating) can be initiated manually or at set intervals.

Two analog outputs easily connect to meters, controllers, recorders and other equipment. The RS-232 interface simplifies setup and calibration. RS-485 & Ethernet options permit networking the HMT333 with other devices. Windows software is available to download and display the measurement data.

Datalogger option records up to 4 years of data.


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