UV light meter | UV light intensity measurement

As a professional UV light meter manufacturer, we have developed several UV radiometers for a variety of applicable industries during the last 12 years since the foundation of Linshang. Boasting a leading research and development team and a mature, stable quality management system, Linshang has the confidence that every UV light meter can meet the user's needs.

According to the ultraviolet wavelength (UV-A, UV-B, UV-C, UV-V) and the type of UV lamp (high pressure mercury lamp, LED light source, etc. ), our UV light meters can be divided into a variety of models. For more questions about the UV meter selection, please read "UV Light Meter Selection and FAQ"or browse the FAQ at the bottom of this page.

LS127C Integrated UV Light Meter

1. Integrated UV light meter for 254nm germicidal lamp

2. Use mobile APP to realize unattended monitoring

3. Free 1-meter test hook, in line with national testing standards

4. Intelligent statistical power real-time value, max value, min value, average value, measurement duration

Browse:874

LS126C UV Light Meter (2nd)

1.Specially for short-wave sterilization ultraviolet light
2.Used for measuring 254nm UV
3.Measuring range: 0 - 20000 μW / cm²
4.Spectral response: 230nm-280nm, λp = 254nm

Browse:11067

LS126A UV Light Meter (2nd)

1.Specially for UV LED
2. 7.2mm ultra-small size
3. With a high-speed sampling speed of 2000 times per second
4. Have statistical function, directly display real-time value, maximum value, minimum value, average value and measurement duration.

Browse:3658

LS125 Multi-probe UV Light Meter Host (2nd)

1. Support 9 kinds of probes according to different light source and application.
2. Probe connection: push pull (Snap-in style)，Aviation socket.
3. Have statistical function, directly display real-time value, maximum value, minimum value, average value, measurement duration and energy value.

Browse:6497

LS125 UV Light Meter+UVC-X0 Probe

1.Suitable for the intensity and energy measurement for UV sterilization lamp
2.Spectral response: 230nm-280nm, λp = 254nm
3.Power measuring range: 0 - 200000 μW / cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:4713

LS125 UV Light Meter+UVCWP-X1 Probe

1.Test intensity and energy of UV germicidal lamp for water treatment
2.Spectral response: 230nm-280nm, λp = 254nm
3.Waterproof depth: 1m
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:2635

LS125 UV Light Meter+UVC-X2 Probe

1.Suitable for 222nm UV germicidal lamps

2.Spectral response range: 210-250nm

3.Power measuring range: 0 - 200,000 μW/cm²

4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:81

LS125 UV Light Meter+UVCLED-X0 Probe

1.Suitable for the intensity and energy measurement for sterilization UVC LED
2.Spectral response: 230nm-315nm
3.Power measuring range: 0 - 200000 μW / cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:4091

LS125 UV Light Meter+UVB-X0 Probe

1.Suitable for UVB that peak wavelength at 297nm, 308nm, 313nm etc.
2.Spectral response: 280-315nm
3.Power measuring range: 0 - 200000 μW / cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:2149

LS125 UV Light Meter+UVA-X0 Probe

1.Suitable for high-pressure mercury lamps with 365nm peak wavelength
2.Spectral response: 315nm-400nm, λp = 365nm
3.Power measuring range: 0 - 2000 mW/cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:2702

LS125 UV Light Meter+UVA-X1 Probe

1.Suitable for testing UVA in aging experiment or sunlight.
2.Spectral response: 315nm-400nm, λp = 365nm
3.Power measuring range: 0 - 200000 μW / cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:2225

LS125 UV Light Meter+UVA-X2 Probe

1.Suitable for 340nm UVA aging lamps

2.Spectral response range: 315nm-365nm

3.Power measuring range: 0 - 200,000 μW/cm²

4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:99

LS125 UV Light Meter+UVA LED-X0 Probe

1.Suitable for the intensity and energy measurement of UV LED curing machine
2.Spectral response: 340nm-420nm, calibrated with 395nm UV LED
3.Power measuring range: 0 - 20000 mW/ cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:3098

LS125 UV Light Meter+UVA LED-X1 Probe

1.1mm test hole is more suitable to measure UV LED point light source
2.Spectral response: 340nm-420nm, calibrated with 395nm UV LED
3.Power measuring range: 0 - 20000mW/ cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:1920

LS125 UV Light Meter+UVA LED-X3 Probe

1.Suitable for the intensity and energy measurement of UVA or UVV light sources
2.Spectral response: 340nm-420nm, calibrated with 395nm UV LED
3.Power measuring range: 0 - 200000 μW / cm²
4.Advanced digital probe technology, it has high precision and good anti - jamming ability

Browse:2531

How to choose a suitable UV light meter?

Different wavelength ultraviolet light sources have different functions. For example, UVC wavelength ultraviolet light is generally used in the sterilization industry and UVA wavelength ultraviolet light is used in the curing industry. When choosing an UV light meter, please firstly confirm the ultraviolet light source you need to measure -type or band. This information can be obtained from the specifications of the light source being tested, or you can directly query the UV light source manufacturer.

I. Choose UV meter according to the type of UV light source

UV Light Source	Suggested UV Meter
253.7nm UVC germicidal lamp	LS126C UV light meter (UV meter APP+PC software)
	LS125 host+UVC-X0 probe
	LS125 host+UVCWP-X0 (waterproof)
	LS129-UVC (online UV light monitor)
UVC LED (260nm, 275nm, etc.)	LS125 host+UVCLED-X0 probe
UV plant growth light or reptile lamp	LS125 host+UVB-X0 probe
365nm high pressure mercury lamp	LS125 host+UVA-X0 probe
365nm high pressure mercury lamp	LS129-UVA (online UV light monitor)
UV LED (365nm, 385nm, 395nm, 405nm, etc.)	LS125 host+UVALED-X0 probe (area light source)
	LS129-UVALED (online UV light monitor)
	LS126A UV light meter (ultra-small probe)
	LS125 host+UVALED-X1 probe point light source)
UV Halogen, gallium, iron, xenon lamps, etc.	LS125 host+UVA-X0 / UVA-X1 probe
UV light source in aging box	LS125 host+UVA-X1 / UVB-X0 probe
UV light from the sun	LS125 host+UVA-X1/ UVB-X0 probe
Welding arc	LS125 host+UVA-X1/ UVB-X0 / UVC-X0 probe
Non-destructive inspection UV lamp	LS125 host+UVA-X0 probe
UV LED Nail Lamp	LS125 host+UVALED-X3 probe

II. Choose UV light meter according to the UV wavelength

Suggested UV Meter	UV Spectral Response	UV Meter Application
LS126C UVC light meter	230-280nm	Medical 254nm UVC germicidal low-pressure mercury lamp
LS125 host+UVC-X0 probe	230-280nm	High-power 254nm germicidal mercury lamp
LS125 host+UVCWP-X1 probe	230-280nm	High-power 254nm UVC germicidal mercury lamp, 1 meter waterproof
LS125 host+UVCLED-X0 probe	240-320nm	260-285nm LED sterilization lamp
LS125 host+UVB-X0 probe	280-315nm	297nm, 308nm, 313nm UVB light source
LS125 host+UVA-X0	315-400nm	High pressure mercury lamps
LS125 host+UVA-X1	260-400nm	UVA light source
LS125 host+UVALED-X0	340-420nm	UV LED area light source
LS125 host+UVALED-X1	340-420nm	UV LED point light source
LS125 host+UVALED-X3 probe	340-420nm	Low-power UVA LED light sources
LS126A UVA light meter	340-420nm	UV LED area light source; small probe or narrow space
LS129-UVA online light meter	315-400nm	High pressure mercury lamps, online
LS129-UVALED online light meter	340-420nm	UV LED area light source, online
LS129-UVC online light meter	230-280nm	254nm UVC germicidal mercury lamp, online

III. Choose UV intensity meter according to the measurement range and test hole diameter

Suggested UV meter	Power Measuring Range	Energy/Dosage Measuring Range	Measuring Aperture
LS126C UVC light meter	0-20000 μW/cm²	0-9999999μJ/cm²	10mm
LS125 host+UVC-X0 probe	0-200000 μW/cm²
LS125 host+UVCWP-X1 probe
LS125+UVCLED-X0 probe
LS125 host+UVB-X0 probe
LS125 host+UVALED-X3 probe
LS125 host+UVA-X1 probe
LS125 host+UVA-X0 probe	0-2000 mW/cm²	0-9999999mJ/ cm²
LS125 host+UVALED-X0 probe	0-20000 mW/cm²
LS125 host+UVALED-X1 probe			1mm
LS126A UVA light meter		0-9999999mJ/cm²	3mm
LS129-UVA online light meter	0-2000 mW/cm²	0-4×10⁹mJ/ cm²	10mm
LS129-UVALED online light meter	0-20000 mW/cm²	0-4×10⁹mJ/ cm²
LS129-UVC online light meter	0-200000 μW/cm²	0-4×10⁹μJ/ cm²

IV. FAQ for UV light meters

1. Why there is no traceable calibration certificate for UV LED light meters?

There are no testing standards for LED light source, so we can't provide any traceable reports for the probes or UV intensity meters special for LED light souce (UVCLED-X0 probe, UVALED-X0 probe, UVALED-X1 probe, UVALED-X3 probe, LS126A, LS129-UVA). The data of these probes or UV meters are calibrated based on the manufacturer's standards of Linshang.

We provide factory calibration report for all the UV light intensity meters.

2. Is there a traceable calibration certificate included？

The calibration certificate is not a standard configuration. You need to pay additional calibration costs and wait patiently for the inspection duration of the device.

All the UV light meters, except the probes or UV meters special for LED light source, conform the relevant regulations and standards in China. The UV light intensity meter can pass the inspection of authoritative measurement agency (which has been approved by CNAS and ilac-MRA) and obtain a calibration certificate.

3. What's the value of UV germicidal lamp used in hospitals to be qualified?

The "Chinese Technical Disinfection Technical Specifications" stipulates that the UV light meter is to be placed at a distance of 1 m vertically under a 253.7 nm germicidal lamp.

The UV light intensity of the new ordinary 30W straight tube must be no less than 100 μW/ cm².

The UV light intensity of the 30W straight tube in use must be no less than 70 μW/ cm².

The UV germicidal lamps with different wattages have various standards, while 30W straight tube is the most commonly used.

The UV light intensity of the germicidal lamp is also related to the ballast. If the ballast of poor quality is used, the qualified UV-C lamp may also be be judged as failing, we recommend that users choose ballasts with good quality, such as Philips.

4. Can these UV meters measure UV wavelength?

Sorry, Linshang UV meters can just measure UV light intensity or UV dose (also UV dosage or energy). Only spectrometers can measure the UV wavelength.

5. Two ways to figure out whether it is a 253.7nm germicidal lamp (low-pressure mercury lamp)

Option 1:The spectral response range of LS126C or other UV-C probes is 230-280nm, the measured peak wavelength is 253.7nm, while the UV light meters' response at other wavelengths is very weak. The low-pressure mercury lamp currently known only has a peak wavelength at 253.7nm. Therefore, if the test data is very low, then the germicidal lamp peak wavelength may not be 253.7nm or it's unqualified.

Option 2: A spectrometer is needed to measure the spectrum or wavelength of the germicidal lamp.(Unfortuantely this equipment is not provided by Linshang.）

6. UV light meter calibration period and cost

UV meters are generally recommended to be calibrated once a year, however, if they are not used frequently and the UV meters are kept in a dry and clean environment, you can also choose to send them back to the factory for calibration every two years or longer.

The first calibration is free, but the freight cost and VAT/taxes by customs is borne by the client. The cost of subsequent calibration for UV light meter is US$32.

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