Measure the intensity of UV light to track equipment performance and ensure safety. These meters are often used in sterilization systems, curing applications—such as coatings and adhesives—and for monitoring blue-light UV radiation from welding equipment. All have a data hold function, allowing you to keep measurements on the screen so you have time to write them down. To preserve battery life, they shut off automatically. These meters are CE marked as meeting European safety standards.

Always wear UV-protective glasses and clothing when collecting measurements. These meters are not for use with lasers.

Meters for UV-A and UV-C wavelengths measure with two sensors, one for long-wave light and one for short-wave light. An included SD card stores timestamped readings in Excel format for transfer to a PC. Save and retrieve the high and low measurements you’ve taken using the minimum/maximum memory feature. The built-in tilt stand props these meters up, so you don’t have to hold them.

Plug an optional thermocouple probe into meters for UV-A and UV-C wavelengths to measure surface temperature. These probes are often used in curing applications to make sure material has reached the required temperature.

Confirm that each product is as shiny as the last. These meters measure the gloss of paint and coatings as well as metal, ceramic, and granite surfaces. All come with a USB cord to transfer data to PCs.

Meters with a 60° field of view can evaluate the gloss of most standard, semi-gloss surfaces.

Meters with a 20°, 60°, and 85° field of view can evaluate low-gloss/matte and high-gloss surfaces in addition to semi-gloss surfaces—their gloss measuring range is 10 times as broad as meters with only a 60° field of view. They’re compatible with a free app that lets you use your Android device to start and stop recording and send data using Bluetooth.

These meters come with a calibration block, and you should calibrate them before each reading. Lay the block on a flat surface and press the calibration button on your meter. Position the meter on top of the block, and your meter will calibrate.

Continuously monitor light quality, intensity, and density in light-sensitive environments, such as photo labs and pharmaceutical manufacturing facilities. While light meters spot-measure intensity in a specific area, these monitors give you detailed readings for an extended period. They combine a light sensor, transmitter, and digital display unit. Configurable alarm outputs notify you when light levels are outside of a set range. These monitors are IP rated for protection against dust and splashing water.

A 5 ft. cable lets you keep your display visible while you check light levels in dim or hard-to-reach areas. You can mount the digital display to your wall for easy viewing with the included fasteners. If you want to mount the transmitter to a wall or onto DIN rail, connect it to the included adapter rail.

For setup, connect the light meter to the transmitter, and the transmitter to the display. Everything needs to be wired together with 4-20 mA wire (not included). You need to wire the transmitter to a 90 to 260 ACV power supply. Wiring instructions are included.

Find the best spot for new solar panels or check the performance of existing ones. These tools measure solar power in different ways, helping you comply with IEC 62446-1, a standard for testing, documenting, and maintaining solar panels connected to the grid. The data hold function freezes a measurement on the screen, so you have time to write it down. CE marked, all meet European safety standards.

Solar light meters measure sunlight, providing a general sense of the strength and intensity of solar power in a certain area. They are small enough to fit in your pocket, making it easy to take them from site to site.

Solar irradiance meters measure electromagnetic radiation, giving you a more precise sense of how much power a solar panel will generate than solar light meters. These meters also have two options for checking how heat affects your solar panel: a built-in temperature sensor and, for higher accuracy, a temperature probe. The integrated angle indicator and compass help you find the perfect tilt and orientation for your panels. Connect these meters to your smartphone via Bluetooth to easily store and share test results.

Solar irradiance meter kits include tools to measure current and voltage, so you can check if your panels are generating the expected power. To test current, position your panel’s wiring within the jaws of the clamp meter. Or, if your wiring is hard to reach or clamp around, attach the flexible AC probe to the clamp meter and loop it around your wiring. Neither method will interrupt your circuit, making frequent measurements possible. To measure voltage, wire the clamp meter’s test leads to your solar panel or power station.

Evaluate how dyes, pharmaceuticals, food products, and raw materials respond to light to determine their purity and quality. Also known as spectrophotometers, these are often used to measure how a sample’s concentration changes when exposed to light. They measure absorbance and transmittance to check how much light is absorbed or passes through a sample. They also take reflectance measurements to help you test paint and coatings by checking how much light bounces off them. To use these meters, point the light toward your sample.

Fields of view represent how the human eye sees color. The 2° field of view mimics viewing color up close. The 10° field of view mimics viewing color as you’d see it from a few feet away.

Aperture sizes control the amount of light you expose your sample to. Use the 11 mm aperture to measure textured samples and average color over a larger area. The 6 mm aperture is best for general purpose measurements. The 3 mm × 1 mm aperture measures small samples.

Diffuse illumination distribution means these meters scatter light around your sample for even coverage. This gives you accurate readings on rough and uneven surfaces. The 8° illumination angle reduces light reflections when measuring glossy materials.

Color spaces give numbered color values for standard colors in different industries. These meters support standard color spaces for printing, textiles, digital displays, food and pharmaceuticals, and lighting design.

Color distance formulas measure how different two colors are from each other. ΔE76 is used for comparison in general purpose, non-critical applications. ΔECMC is often used to measure textiles, ceramics, and uneven or glossy surfaces. ΔE94 is often used to measure paints and coatings for vehicles. ΔE2000 is the most accurate and precise measurement formula. It is the standard adopted by ISO. You’ll see it used in applications where color measurements are more critical, such as laboratories or pharmaceutical manufacturing facilities.