Solarmeter® Model 5.7 Sensitive UVA+B Meter

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  • Compact, Handheld, and Durable
  • Simple Single-Button Operation
  • NIST Traceable Accuracy
  • LCD Display
  • Made In USA


  • Monitoring Xeroderma Pigmentosum UV Exposure
  • Testing Window Film / Tint Transmission
  • Monitoring Low Level UV from Household Lamps
  • Testing Ground level UV From Stadium Lighting
  • Monitoring Artwork UV Exposure
  • Measuring Outdoor Shady Area UV
  • Choose Sensitive Model 5.7 For Indoor / Low Intensity Applications
  • Choose Standard Model 5.0 For Outdoor / High Intensity Applications
SKU: Solarmeter Model 5.7


Solarmeter® Specifications
Model 5.7
Irradiation Range 0-1999 µW/cm² Total UV
Response 280-400 nm (UVB thru UVA)
Resolution 1 µW/cm²
Conversion Rate 3.0 Readings/Sec
Display 3.5 Digit LCD
Digit Size 0.4 (in) / 10.2 (mm) high
Operational Temperature 32°F to 90°F / 0°C to 37.8°C
Operational Humidity 5% to 80% RH
Accuracy ±10% REF.NIST
Dimensions 4.2L x 2.4W x 0.9D / 106.7L x 61W x 22.9D (mm)
Weight 4.5 (oz.) / 128 (g) Including Battery
Power Source 9-Volt DC Battery
Lens Acrylic
Diffuser Teflon
Agency Approval CE Mark


Solarmeter Model 5.7 UVA+B Spectral Response Graph

The semiconductor UV sensor consists of a photodiode chip and a UV filter. The sensor is completely insensitive to visible light longer than 400 nm and infrared radiation, since its spectral response covers only the UV region from 260 to 400 nm. Applications of the sensor include solar UV detection, as the spectral response is well matched to the solar UV spectrum.

To operate your Solarmeter, aim the sensor window located on the top panel of the meter directly at a UV source. Press and hold the push-button switch on the face of the meter. For best results take note of the distance the reading was taken from the UV source in order to ensure repeatable results. Battery operation voltage is viable from 9V down to 6.5V. Below 6.5V, the numbers on the LCD display will begin to dim, indicating the need for battery replacement. Under typical service load, a standard 9V battery will last around 2 years.

Proper Usage of Solarmeter® Ultraviolet Radiometer for low level UV measurements.

  • When checking home, business, school, or car window UV transmission, take reading through window or film and compare to outdoor reading. Note: The sensitive Model 5.7 reading only goes up to 1999 uW/cm², wheras full sunlight can exceed 5000 uW/cm²… or 5.0 mW/cm² on a Model 5.0 meter.
  • For household lighting including compact fluorescents, take reading near lamps and again at several inches or feet distance, to see how far away the UV falls below 1 uW/cm².
  • For gym or stadium lighting take readings at floor level. If concerned about amount of UV, ask the owners to have UV-block shields installed under the lamps.
  • Do not subject the meter to extremes in temperature, humidity, shock or dust. Store meter away from humidity when not in use.
  • Use a dry, soft cloth to clean the intrument. Keep sensor free of oil, dirt, etc.

Additional information

Weight 0.5 lbs
Dimensions 7 × 3.5 × 2.5 in
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Scientific Papers