TEMPERATURE / HUMIDITY /DEW POINT METER Users Manual
■. Introduction Thank you for purchasing the temperature/humidity/dew point meter from us. Please take a few minutes to browse through this user manual before you begin to operate the meter to ensure that you are fully familiarized with how best to operate the meter as accurately and safely as possible. The meter is a temperature and humidity measuring instrument. It is normally used to measure the humidity and temperature in offices, storerooms, buildings and greenhouses. 1.
acides or other aggressive substances. 1.1.2 Maintaining the product Do not measure at a high temperature places. When not using the instrument for a long time, please remove the battery and avoid storing in high temperature and high humidity.
■. Features 1. Display: 4 digits LCD Display 2. Parameters: ℃, ℉, %RH(relative humidity), td(dew point temperature) 3. Resolution: 4. Range: 0.1℃, 0.1℉, 0.1%RH -10 ～ +50℃, +14 ～ +122℉, 0 ～ +100%RH 5. Accuracy: ±1.0℃, ±1.8℉, ±3%RH（5～95%RH） 6. Sample rate: 1 time /sec 7. auto power off: about 20 minutes 8. Operating environment: -10 ～ +50℃, +14 ～ +122℉ 9. Storage environment: -20 ～ +60℃, -4 ～ +140℉ 10. Dimension and Weight: 121(L)x60(W)x30(H)mm, about 180g 11. Accessories: DC1.
■. Names of parts Instrument Familiarization 1. Sensor cover 2. Sensor 3. LCD display 4.
The meaning of the symbols represented by the following： 1. Indicating it is now in the data-holding state 2. Indication to back light 3. Display zone 4. Display zone 5. Average / Maximum / minimize 6. Humidity units 7. Temperature units 8. Indication to low voltage of the batteries ■.
current value of temperature and humidity. The default humidity / temperature unit is % RH / ℃. 2. Press Unit key to change the humidity / temperature unit. The adjustable parameters are %RH(relative humidity), HOLD td(Dew-point temperature), ℃, ℉; press the Mode and Light key to change MAX/MIN and HOLD mode. 3. Switching the back light on HOLD When the meter is power on, press Light key >2sec. the back light will be turned on, and the icon will display on the LCD. Press the key once >2sec.
■. Function keys 1. ON/OFF key Press the key to turn the power ON and press the key once more >2sec. to turn the power OFF. 2. Mode key Press the key can select the state of MAX、MIN. LCD will display the max/min values since the instrument was last switched on or last reset. 3. Unit key Press the key can change the parameter unit. Adjustable units: %RH/℃,td/℃,%RH/℉,td/℉. HOLD 4. Light key Press the key, a icon will display on the LCD and the readout held in.
once >2sec. the light will be turned off, and the icon will disappeared. 5. Auto power off setting When the meter is powered on, it is under auto power off mode. The meter will power itself off after 20 minutes if no key operation. Cancelled auto power off function: press Hold key when power on until the LCD display AP OFF, then press the Hold key again to confirm the setting. ■. Maintenance 1.
2. BATTERY REPLACEMENT Use the following procedure: When the battery voltage drop below proper operation range the symbol will appear on the LCD display and the battery need to be replaced. Press the battery cover and towards arrowhead direction to open the battery cover. Replace the battery with three new 1.5V batteries (AAA). WLS2102 Replace the battery cover.
