Catalog > Test and Measurement > Test and Measurement Instruments > Special Function Testers > Miscellaneous Testers Catalog > Test and Measurement > Test and Measurement Instruments > Major Tech Instruments Major Tech Digital Thermo-Hygrometer Digital Thermo-Hygrometer MAJ MT665 DIGITAL HYGROMETER Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The MT665 is designed for ruggedness and reliability and offers unique features not previously available on the market. The MT665 is a RH meter and has an Infrared Thermometer with a spot to distance ratio of 8:1, plus a laser pointer. The RH probe can be disconnected so that the meter can be a standalone thermometer. The large clear backlit LCD displays the humidity and IR temperature simultaneously, the RH can be switched off and the ambient temperature and IR temperature can be displayed simultaneously. The ambient temperature range is from -20°C to 60°C. Other features include Max Hold which displays the maximum reading and Data Hold. This meter is ideal in other industries such as computer rooms, hospitals, tobacco industry, factories and offices and general use. Features 30% to 95% HumidityK-Type ThermometerTemperature from -50°C to 500°CSeparate RH probe for easy access in hard to reach placesSelectable 0.1°C or 1°CLarge LCD dual display with function indication and backlightSimultaneously displays RH and temperatureAuto Power OffMax record modeData Hold functionSelectable °C or °F Specifications General SpecificationsDisplay : Dual LCD display for temperature and humidity with backlightIR Measurement Ranges : -50.0°C to 500°C / -58.0°F to 932°FHumidity Ranges : 0% to 100% RHSample Rate : 2.5 times per secondOver Range Indication : LCD will show "OL"Polarity : Automatic (no indication for positive polarity); Minus (-) sign for negative polarity.IR Spectral Response : 6 - 14umPower Off : Automatic shut off after 10 minutes, approxOperating Temperature : 0°C to 50°COperating % RH : Max 80% RHPower Supply : 9V BatteryDimensions : 150 x 75 x 40mmWeight : 200gInfrared Thermometer SpecificationsRange-50.0°C ~ 200.0°C (0.1°C Resolution) : ± 3.5% RH Accuracy200°C ~ 500°C (1°C Resolution) : ± (2% of reading or ± 2°C)Emissivity Settings : 0.95 fixedDistance Factor : D:S = Approx. 8.1 (D=distance, S=spot)Relative Humidity/ Air Temperature SpecificationsRange5.0% RH ~ 95.0% RH (0.1% RH Resolution) : ± 3.5% RH Accuracy-20.0°C ~ 60.0°C (0.1°C Resolution) : ± 2°C Accuracy Downloads Datasheet - MAJ MT665 PDF File 988.81 KB