LINSHANG LS123 Bedienungsanleitung
Shenzhen Linshang Technology Co., Ltd
2022-06-30 Page 1 of 5
LS123
UV Power Meter
User Manual V7.0
Please read this manual carefully before using and reserve it for reference.
Shenzhen Linshang Technology Co., Ltd
2022-06-30 Page 2 of 5
I. Product introduction
UV power meter is an UV power measuring instrument, which is used for measuring the UV radiation
luminance. Its unit is micro Watt per square centimeter (uW/m2). The instrument is also used for the UV
rejection measurement.
II. Parameters
1. Irradiance measuring range: 0 ~ 40000 uW /cm2
2. Accuracy: ± 10%
3. UV rejection rate: -999 ~ 100%
4. Spectral range: 260-400nm; λp = 365 nm
5. Detector Diameter: ¢ 10mm
6. Dimensions: 125mm * 69mm * 24.5mm (L * W * H)
7. Weight: around 140 grams (including battery)
8. Operating temperature: -20 ° C ~ + 70 ° C
9. Power supply: 4 pieces of AAA alkaline batteries
III. Operation of Buttons
1． Power On / Off
Short press “ ” button to switch on / off the instrument.
Auto power off in 30 minutes without any operation
2． “HOLD” button
Under measurement conditions, short press “HOLD” button to hold the data on LCD, and the LCD
displays “HOLD” symbol. Press the “HOLD” button again to cancel the state of holding and enter into
measuring mode.
3． “0%” button
Under measurement conditions, press “0%” button to set the UV rejection value to 0%.
Measurement for UV rejection rate
After the relative positions of UV lamp and instrument are confirmed and when there is no test material
between the UV lamp and instrument, measure the irradiance of UV lamp and press “0%” button to set
the UV rejection value to 0%, and then put the test material between the UV lamp and instrument (the
Shenzhen Linshang Technology Co., Ltd
2022-06-30 Page 3 of 5
positions of instrument and the lamp shall not be changed)，the UV rejection value of the material will
display on the LCD.
IV. Operating Instructions
1. Measuring the irradiance of UV light sources (the sun, UV lamp, etc.)
To measure the irradiance of light sources, turn on the instrument and put the detector against the light
source. Then the UV irradiance of the light source can be measured.
2. Measuring the UV rejection rate of solar films or insulated glass, etc.
To measure the UV rejection rate of solar films and insulated glass, etc, two steps shall be carried out:
Step1 Step2
Figure1: Measuring the UV rejection rate of solar film
Step 1: Measuring the irradiance of the UV light source
Sunlight and UV lamp can be selected as the UV light sources. First measure the irradiance of the light
source, W. Under this condition, press “0%” button and set the UV rejection rate as 0%.
Shenzhen Linshang Technology Co., Ltd
2022-06-30 Page 4 of 5
Step 2: Measuring the irradiance through the solar film or insulated glass
Maintain the distance between the UV light source and the instrument, and put the solar film or insulating
glass between the instrument and the UV light source. Irradiance of the UV light source through solar film
or insulated glass is W, and the UV rejection value of the material will display on the LCD. In Figure 1,
the UV injection rate is 81.1%.
UV transmittance =
∗ 100% = 2383/12636*100% = 18.9%
UV rejection rate
＝
100% - UV transmittance = 81.1%
V. Note
1. After the “0%” button is pressed, the light source and instrument should not be moved in the
subsequent measurements to ensure the accuracy of UV rejection rate.
2. Please turn off the meter by pressing the power button when the instrument is not being used.
3. When the battery icon is displayed as empty and blinks, please replace the battery.
4. Avoid contact with corrosive agents and keep from high temperature and humidity environment.
5. Spectral response curve of meter.
VI. Packing list
No. Description Quantity Unit
1 UV Power Meter 1 pcs
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2 AAA battery 4 pcs
3 User Manual 1 pcs
4 Certificate / Warranty card 1 pcs
VII. Service
1． The meter has one-year warranty. If the meter works abnormally, please send the whole meter to the
company for maintenance.
2． Provide users with spare parts and lifelong maintenance services.
3． Provide the users with the meter inspection service for free.
4． Free technical support for long term.
Manufacturer: Shenzhen Linshang Technology Co.,Ltd.
Website: www.linshangtech.com
Service hotline: 086-755-86263411
Email: sales21@linshangtech.com
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