UV Products J-221 Longwave Analog UV Meter
The J-221 meter measures longwave (365 nm) UV-A radiation
The J-221 Meter complies with MIL STD 45662-A and can be found in MIL-I-6868D. Each meter features two scales for low and high-intensity readings. For remote readings, a four foot (1.2m) cord connects the sensor to the meter. Two scales measure a wide range of intensity. An infrared filter assures accurate readings when measuring light sources producing infrared radiation. The 5X attenuation screen can be used for very high-intensity lamp measurements.
Calibration is certified to meet UVP's published standards and is traceable to NIST*. UVP recommends calibration every six months.