transducer for illuminance and irradiance | HD 2021T...

general information:

The transducers of the series HD 2021T… allow the conversion of photometric and radiometric quantities, such as illuminance (Lux) and irradiance (W/m²) in the spectral regions UVA, UVB, UVC and in the 400 to 1,050 nm band, into a 0 to 10 V DC voltage signal. The 0 to 10 V output voltage (0 to 1 V, 0 to 5 V, 4 to 20 mA available upon request for orders of a minimum of 5 units) is factory calibrated according to the full scale range specified at the time of order.

The transducers of the series HD2021T... are suitable for the installation indoors and outdoors (ingress protection: IP66). In case of measurements of extremely intense light sources, the transducer sensitivity can be reduced upon request. The HD 2021T… series use filters and photodiodes especially developed to adjust spectral response to a specific region of interest.

application areas:

control of illuminance (HD 2021T…) in offices, manufacturing plants and
production areas, commercial sites, theatres, museums, sports facilities,
roadway lighting, tunnels and nursery-gardening systems
control of solar radiation in the 400 nm to 1,050 nm spectral band (HD 2021T1)
control of the irradiance emitted by tanning lamps in the UVA (HD 2021T2)
and UVB (HD 2021T3) spectral regions, as well as control of the efficiency of
filters in devices using high pressure lamps
control of the efficiency of lamps used in sewage treatment plants, where
UVC (HD 2021T4) band irradiance has to be monitored constantly