How to operate and use the handheld illuminance meter correctly?
① Turn on the power.
② Open the light detector cover and place the light detector horizontally in the measurement position.
③Select the appropriate measuring gear.
If only "1" is shown on the left end of the display, it means that the illuminance is too much and you need to press the range key (⑧ key) to adjust the measurement multiplier.
④ The illuminance meter starts working and shows the illuminance value on the display.
⑤ The data shown on the display changes constantly, when the display data is more stable, press the HOLD key to lock the data.
⑥ Read and record the observed value shown in the readout. The observed value is equal to the product of the number displayed in the readout and the range value.
For example: 500 is displayed on the screen, the lower right corner of the display status is "×2000", the illuminance measurement value is 1,000,000lx, i.e. (500 × 2000).
⑦ Press the lock switch again to cancel the reading value lock function.
⑧ Each observation, three consecutive readings and record.
⑨ After each measurement is completed, press the power switch button to cut off the power supply.
⑩Cover the lid of the light detector and put it back in the box.
The illuminance meter (or lux meter) is an instrument and meter that specializes in measuring luminosity and brightness. It is the measurement of light intensity (illuminance) It is the degree to which an object is illuminated, that is, the ratio of the luminous flux received by the surface of the object to the area illuminated. Illuminance meter is usually composed of selenium photocell or silicon photocell and microampere meter.
