Humidity/temperature measuring instrument - testo 645
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Humidity/temperature measuring instrument - testo 645 - 1

measuring instrument testo 645 - Highly precise Highly accurate humidity measurement up to ±1 %RH Connection of 2 plug-in probes Measurement of temperature, relative humidity and pressure Internal measurement store (3000 measurement values) PC software for the analysis, archiving and documentation of the measurement values (option) Button for Hold, min./max. values, mean value calculation Convenient data analysis The highly accurate thermal hygrometer testo 645 has two probe inputs for the connection of an extensive range of - Channel 1: temperature Type K/J/S, NTC - Channel 2: combi probe humidity/temperature or The measuring instrument automatically displays the measurement parameters temperature, relative humidity, dewpoint, pressure dewpoint, absolute humidity, degree of humidity and enthalpy, and additionally presents the current values, the last measured values, min., max. and mean values at the press of a button. Measurement data can be stored by measurement site in the testo 645, and analyzed on a PC, or documented using the Testo fast printer (option). The TopSafe (option) is available for tough applications. The measuring instrument probes and accessories can be stored safely and tidily in the transport case (option).

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Humidity/temperature measuring instrument - testo 645 - 2

Technical data testo 645, humidity/temperature measuring instrument, with battery and calibration protocol General technical data Accuracy of temperature: ± 1 digit at +22°C NI 10000 sensor: meas, range: ...+180°C Typical battery lives: 9V block (Al-Mn) 20-45h. The hour times are reduced by a factor of 5 If a 9V rech. battery is Calculated humidity parameters: td, g/m3, g/kg, J/g (pressure Mains connection and battery recharging in Instrument The highly accurate thermal hygrometer testo 645 has two probe inputs for the connection of an extensive range of - Channel 1: temperature Type K/J/S,...

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Humidity/temperature measuring instrument - testo 645 - 3

Technical data / Accessories Sensor type Meas, range Accuracy ±1 digit Resolution

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Additional accessories and spare parts Part no. Calibration Certificates

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Probe type Probe shaft/probe shaft tip 1 ) According to norm EN 60751, the accuracy of Classes 1 / 2 refers to -40 to +1000/+1200 °C,

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Probe type Probe shaft/probe shaft tip Humidity probes 2) According to standard EN 60751, the accuracy of Class A and B refer to -200 to +600 °C.

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Humidity/temperature measuring instrument - testo 645 - 7

Probe type Probe shaft/probe shaft tip Probes Process humidity Probes Material and equilibrium moisture

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