LS125 UV Light Meter +UVCWP-X1 Probe

Suitable for the testing of high-power germicidal lamp in water treatment industry

Spectral response: 230nm-280nm, λp = 254nm
Waterproof, the probe can be submerged to the depth of 1 meter
Large power range , the maximum measurement power up to 200000μW/cm²

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The LS125 UV light meter is a smart host that can support 12 different types of probes. Its main function is data display. The UVCWP-X1 probe is one of the 12 probes equipped with the LS125 host. The probe's spectral response range is 230nm-280nm, the peak wavelength is 254nm. This UV radiometer is waterproof to 1 meter deep. It is a probe specially developed for water treatment high-power germicidal lamps.


Water treatment is divided into wastewater treatment, urban water supply treatment, drinking water treatment, purified water treatment, and agricultural wastewater treatment. There are two methods of water treatment. The first is to put sterilization lamps into the water to sterilize. The second method is to sterilize the lamp in a sleeve. Because the water flow rate is too fast, the germicidal lamp time is sometimes less than 1 second, so a high-power germicidal lamp or a longer ultraviolet lamp is required to sterilize. LS125 + UVCWP-X1 waterproof light meter is a professional instrument for detecting water treatment germicidal lamps.

If you want to know about other types of probes supported by the LS125 UV light meter host, please click "LS125 Multi-Probe UV light meter Host" for details.


Parameters UVCWP-X1 Probe
Spectral response 230nm-280nm, λp = 254nm
Power measuring range 0 - 200000μW / cm²
Resolution 0.1μW / cm²
Energy measuring range 0-9999999μJ/cm²
Record time 0-99999s
Measuring accuracy(H is the standard value) H<50μW/cm²:±5μW/cm²
Sampling speed 6 times/second
Unit μW / cm² (default), mW / cm², W / m²
Test Hole Diameter Φ=10mm
Probe size Diameter 50mm × thickness 20mm
Waterproof depth 1m
Packing box dimension 24 * 6 * 5 cm (L * W * H)



The probe is waterproof and the waterproof depth can reach 1 meter

Excellent digital probe technology

Adopting advanced digital probe technology, all data collection and processing are completed inside the probe. Data transmission through digital signals with stronger anti-interference ability can ensure more stable test data

Large power range , the maximum measurement power can reach 200000μW/cm²

Large-scale measurement, the maximum power can be measured to 200,000 μW / cm²

Data Statistics

The probe can intelligently statistics the real-time value, maximum value, minimum value and average value of the power, record the measurement time.All these values can be displayed in the screen at the same time

Units are available

Three measurement units can be switched, namely μW/cm², mW / cm², W / m². Data conversion between different units does not require manual calculation

Qualifications and Standards

The UV light meter LS125 host + UVCWP-X1 probe conform to the following standard:

JJG 879-2015 Verification Regulation of Ultraviolet Radiometers

Certificates for LS125 UV radiometer host +UVCWP-X1 probe
Certificates for LS125 UV radiometer host +UVCWP-X1 probe


UV light meter operation

UV radiometer waterproof probe demonstration


  1. 1. The difference between UVC-X0, UVCWP-X1 and UVCLED-X0 UV probes for LS125 UV light meter host

    UVC-X0 and UVCWP-X1 probes are suitable for detecting 254nm low-pressure mercury germicidal lamps, while UVCLED-X0 is suitable for UVC LED light source; the UVCWP-X1 probe is a waterproof probe with 1m waterproof depth.

  2. 2. Whether a traceable calibration certificate is included?

    UVC-X0 and UVCWP-X1 are mainly used to detect 254nm low-pressure mercury germicidal lamps, which can be ensured to pass the inspection of the Metrology Institute and obtain a calibration certificate (approved by CNAS and ilac-MRA). The cost of the calibration certificate is about US$200 ; but the UVCLED-X0 probe is professionally used to detect UVC LED light sources. There is no unified inspection standard for LED light sources, each light source and UV energy meter manufacturer has their own calibration standards. We can provide the factory calibration reports for UVCLED-X0 probe, but no calibration certificates can be provided.

  3. 3. What's the working temperature of the UV probes?

    The 9 probes of the LS125 UV light meter are not heat-resistant. The probe can be used for a long time at 80℃ or lower. If the temperature is higher than 80℃, it is recommended to use UV energy meter for UVA light source detection.