The probe LPPHOT03 measures illuminance (lux), defined as the ratio between the luminous flux (lumen) passing through a surface and the surface area (m²). The spectral response curve of a photometric probe is similar to the human eye curve, known as standard photopic curve V(λ). The difference in spectral response between LPPHOT03 and the standard photopic curve V(λ) is calculated by means of the error f'1.
Calibration is carried out by comparison with a reference luxmeter, calibrated by a Primary Metrological Laboratory. The Calibration Procedure complies with the CEI publication No.69 “Methods of characterizing illuminance meters and luminance meters: Performance characteristics and specifications, 1987”.
The photometric measurement probe is designed for outdoor readings. CIE photopic filter.
Output, according to the chosen configuration, in mV or 4…20 mA or 0…10 Vdc normalized output or RS485 MODBUS-RTU output.
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LPPHOT03 = mV / klux
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LPPHOT03BL = mV / klux output + base with levelling device
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LPPHOT03BLAC = output 4…20 mA + base with levelling device
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LPPHOT03BLAV = output 0…10 V + base with levelling device
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LPPHOT03BLS = RS485 MODBUS-RTU output + base with levelling device
Working temperature -20…+60 °C. M12 male 4-pole (models with analog output) or 8-pole (model with RS485 MODBUS-RTU output) connector.
On request CPM12AA4… (except LPPHOT03BLS) or CPM12-8D (only LPPHOT03BLS) cable with M12 female connector.
