Contact Us Dew Point and Temperature Meter Series DMT340 for Demanding Low Humidity Conditions Condensation-resistant DMT340 is designed for industrial low-humidity applications such as industrial drying, compressed air systems, semiconductor industry, dry rooms, baking ovens, and metal heat treatment to provide accurate and reliable measurement. There are several models for different types of needs: DMT341 for wall-mounting DMT342 with small size flanged probe for use with sampling cell DMT344 for pressurized processes DMT347 with small pressure-tight probe DMT348 for pressurized pipelines DMT340 is compatible with the Vaisala DRYCAP® Handheld Dew Point Meter DM70. Features Vaisala DRYCAP® sensor provides accurate, reliable measurement with excellent long-term stability and fast response time Condensation-resistant Unique auto-calibration feature Graphical display and keypad for convenient operation Optional alarm relays and mains power supply module Integrated data logging with over four years of measurement history LAN communication option Traceable calibration (certificate included) + Show more Key Benefits Choose the probe suitable for your needs Five different probe types designed to meet various requirements. Easy maintenance The Vaisala DRYCAP® sensor is immune to particulate contamination, water condensation, oil vapor, and most chemicals. Stable measurement The auto-calibration feature allows the transmitter to perform calibration and adjustment by itself while the measured process is running. Downloads Datasheet: DMT340 Series Dew Point and Temperature Transmitters (1.82 MB) Manual: GUIDE DE L’UTILISATEUR (5.24 MB) Manual: DMT340 User's Guide In English (5.14 MB) Manual: 操作手册 (4.78 MB) Order Form: DMT340 Order Form Global (68.13 KB) Application Note: The Many Faces of Water Vapor (219.46 KB) Application Note: Improving Wafer Circuit Pattern Quality in Semi-Conductor Manufacturing (408.53 KB) Application Note: Measuring Humidity and Dew Point in Environments with Chemical Contaminants (577.15 KB) Brochure: Outages Happen 24/7 – So Should Monitoring (1.92 MB) Brochure: Improving Wafer Circuit Pattern Quality in Semi-Conductor Manufacturing (408.53 KB) Brochure: Choose the Right Dew Point Instrument for Optimized Compressed Air Quality (208.49 KB) Brochure: Improved Lithium-ion Battery Manufacturing with Smart Measurement (1.58 MB) All downloads Customer Stories Success Story Optimized drying process helps Isolava cut energy consumption and improve end-product quality Isolava, founded in 1963 and part of Knauf group since 1990, manufactures gypsum plaster blocks for the construction industry. The most energy... Read more Success Story Vaisala DRYCAP® Sensor for Measuring Dew Point The DRYCAP story began in the mid-1990s following an unresolved measurement challenge. Traditional humidity instruments were not accurate enough... Read more Success Story Maintaining Optimal Atmospheres in Sintering Furnaces SSI Technologies, Inc. is a leading manufacturer of stainless steel powder metal products in the US. The company specializes in high temperature... Read more Success Story Accurate Monitoring of Plastic Drying Process In plastic production plants, dew point measurement is essential for monitoring the drying process. Tessy Plastics Corporation’s state-of-the... Read more Success Story +20% Increase in production capacity with zero increase in energy consumption - dairy manufacturer Valio updated dryer controls Dairy manufacturer Valio updated dryer controls Valio, solely owned by the Finnish dairy farmers, is the largest dairy company in Finland. The... Read more Success Story Air Handling Equipment Inc. Uses Vaisala Dew Point Instruments to Offer Accurate Monitoring Services of Commercial Air Dryers “I was won over during a performance comparison test of dew point instruments using the chilled mirror process. Vaisala was the only one that... Read more Success Story Running on (Good Quality) Compressed Air Compressed air of good quality is indispensable for the reliability and safety of railway operations. Contamination increases operating and... Read more Services Standard Calibration Accredited Calibration Custom Calibration Repair Service Calibration Care Agreement Need support? Need to calibrate? Sign up for news Contact us
Success Story Optimized drying process helps Isolava cut energy consumption and improve end-product quality Isolava, founded in 1963 and part of Knauf group since 1990, manufactures gypsum plaster blocks for the construction industry. The most energy... Read more
Success Story Vaisala DRYCAP® Sensor for Measuring Dew Point The DRYCAP story began in the mid-1990s following an unresolved measurement challenge. Traditional humidity instruments were not accurate enough... Read more
Success Story Maintaining Optimal Atmospheres in Sintering Furnaces SSI Technologies, Inc. is a leading manufacturer of stainless steel powder metal products in the US. The company specializes in high temperature... Read more
Success Story Accurate Monitoring of Plastic Drying Process In plastic production plants, dew point measurement is essential for monitoring the drying process. Tessy Plastics Corporation’s state-of-the... Read more
Success Story +20% Increase in production capacity with zero increase in energy consumption - dairy manufacturer Valio updated dryer controls Dairy manufacturer Valio updated dryer controls Valio, solely owned by the Finnish dairy farmers, is the largest dairy company in Finland. The... Read more
Success Story Air Handling Equipment Inc. Uses Vaisala Dew Point Instruments to Offer Accurate Monitoring Services of Commercial Air Dryers “I was won over during a performance comparison test of dew point instruments using the chilled mirror process. Vaisala was the only one that... Read more
Success Story Running on (Good Quality) Compressed Air Compressed air of good quality is indispensable for the reliability and safety of railway operations. Contamination increases operating and... Read more
