USER MANUAL Hygro-Thermometer Model RHT510 Additional User Manual Translations available at www.extech.
Introduction Thank you for selecting the Extech Model RHT510. This hand-held device measures Relative Humidity, Air temperature, Dew point temperature, Wet bulb temperature, and Type K temperature (using external probe). This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit our website (www.extech.com) to check for the latest version and translations of this User Manual, Product Updates, Product Registration, and Customer Support.
Meter Description 1. Air Temperature/Humidity Sensor 2. Type K Temperature Probe Input 3. LCD Display 4. ON-OFF button 5. ▲ button 6. Mode button 7. Backlight button 8. SET and ▼ button 9. Record button (MAX-MIN) 10. Display Hold button Note: Battery compartment and tripod mount on back of meter LCD Description 1. Type K Temperature Icon 2. Function Icons 3. MAX-MIN Record Icon 4. MAX Display Icon 5. MIN Display Icon 6. Display Hold Icon 7. Battery Status Indicator 8.
Operation Basic Use 1. Short press the power button to power the meter. If the LCD does not switch on, check the batteries located in the rear battery compartment. 2. Place the sensor in the testing environment. 3. View the measurement on the meter’s display. 4. To power OFF the meter, short press the button. Mode Selection Press the M button to select the mode of operation.
Auto Power OFF Control In order to conserve battery life, the meter will automatically shut off after approximately 10 minutes of inactivity. The APO icon appears in the display when APO is selected. To set APO ON or OFF as the default condition: 1. Long press SET button to enter APO mode. The bottom display will show ‘PoFF’. 2. Press the ▲ or ▼ button to turn the APO ON (YES) or APO OFF (NO). 3. Press the R button to save the selection. 4.
Specifications Electrical Specifications (23±5°C) Humidity/Air Temperature Unit Range Resolution Accuracy %RH 10 to 95 0.1 <70%: ±(4%RH) ≥70%: ±(4%rdg + 1.2%RH) Temp oC 0 to 50 0.1 ±1.2oC Temp oF 32 to 122 0.1 ±2.5oF Range Resolution Accuracy* -50.0 to 1300.0 0.1 ±(0.4%rdg + 0.5 oC) -50.1 to -100.0 0.1 ±(0.4%rdg + 1.0 oC) -58.0 to 2372.0 0.1 ±(0.4%rdg + 1.0 oF) -58.1 to -148.0 0.1 ±(0.4%rdg + 1.
General Specifications Display Backlit LCD 35 x 30mm (1.38 x 1.18”) Measurements Humidity/Temp; Dew Point; Wet Bulb; Type K Temp. Input Overload Display “----“ Tripod Mount On rear panel Power 1.5V AAA batteries (3) Power Consumption Approx. 5mA DC Automatic Power Off After approx.
