The testo 645 humidity and temperature measuring instrument automatically indicates the measurement parameters of relative humidity, absolute humidity, dew point, degree of humidity, enthalpy, and temperature, at the touch of a button.

The testo 645 humidity measuring instrument automatically displays the parameters relative humidity, absolute humidity, dew point, degree of humidity, enthalpy, and temperature. Convenient data analysis on your PC with location name.

Features:

High-precision humidity measurement up to ± 1% RH
Internal reading memory (3,000 readings)
Convenient data evaluation via optional PC software
Possibility of attaching a really wide range of optional probes thanks to a large accessory portfolio

More products TESTO

TESTO 805 - MINI INFRARED THERMOMETER

• Infrared thermometer for non-contact surface temperature measurements
• TopSafe protective case (optional) protects from water and dirt in accordance with IP 65
• Scan mode for long-term measurement
• Pocket size measuring instrument: compact for easy handling

TESTO 610 - POCKET-SIZED AIR HUMIDITY MEASURING INSTRUMENT

• Long term stable Testo humidity sensor
• +/-2.5% RH accuracy
• Dewpoint calculation and wet bulb included
• Protective cap for safe storage

TESTO 460 - TACHOMETER

• Optical rpm measurements
• LED measuring spot marking
• Easy to read display / backlit for use in all lighting conditions
• Comprehensive accessories: reflective markers / protective cap / belt bag

TESTO 330I LX - ADVANCED FLUE GAS ANALYZER KIT

• Operation independent of measuring location and display of readings via smartphone or tablet and the testo 330i App
• Paperless documentation and report creation on site with the testo 330i App
• Reliable attachment of the flue gas probe with the testoFix probe holder
• Robust, completely enclosed plastic housing for use in harsh environments

TESTO 868 INFRARED THERMAL CAMERA

• Very good image quality: IR resolution of 160 x 120 pixels, via integrated testo SuperResolution Technology 320 x 240 pixels
• Smart and networked: the free testo Thermography App enables you to write and send reports on site, as well as saving them online, and lots more.

TESTO 440 - INDOOR COMFORT COMBOKIT WITH BLUETOOTH

• Accurate measurement results, thanks to air density compensation via integrated absolute pressure measurement
• Measuring range: 0 to 10,000 ppm, 14 to 122 °F, and 5 to 95% RH
• The Bluetooth handle makes it more convenient to carry out your measurements and guarantees less cable clutter in your case - it transmits readings to the testo 440, from up to 65 feet away
• Practical button on the handle - for storing individual readings
• Versatile - the universal handle can be connected to all probe heads, so you can take care of more applications, and use less equipment

TESTO 176H2 - FOUR-CHANNEL HUMIDITY AND TEMPERATURE DATA LOGGER

• Parallel temperature and humidity measurement
• External temperature and humidity probes for quick, accurate measurements
• Rugged metal housing to protect the logger against impact, dirt, and moisture
• Large data memory capable of storing 2,000,000 measurements

TESTO 175T2 - TEMPERATURE DATA LOGGER

• Dual NTC thermistor (1 internal, 1 external) provides reliable ambient and product temperature monitoring
• Large easy to read backlit display
• Capable of storing up to 1,000,000 temperature readings
• Rugged and waterproof according to IP65

TESTO 545 - LIGHT METER

• Precise light intensity readings in lux
• Large memory of up to 3,000 readings
• Selective / time-based averaging
• Measuring site management with optional software: up to 99 measuring sites available

TESTO 845 WITH INTEGRATED HUMIDITY MODULE - INFRARED TEMPERATURE MEASURING INSTRUMENT WITH INTEGRATED HUMIDITY MODULE

• Switchable optics for far-field (75:1) and close-focus (1 mm, distance 70 mm) measurements
• Humidity module for determining surface moisture
• Instrument memory for 90 measurement protocols
• Visual and acoustic alarm if limit values exceeded