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U327_UFAUVALDG16_B_e_170808
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Inspection
Checking the LEDs, (see under 7 Functional Description, Self diagnosis)
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Maintenance
Only use cleaning agents which dry without leaving any residue and which are compatible with the hous-
ing materials.
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Calibration
The UFA and UVA transducers have an excellent long-term stability. However, it makes sense to have the
instruments calibrated at certain intervals. The period between two calibrations depends on the individual
operational conditions and the tolerable measurement error. Therefore, as a precaution, shorter calibra-
tion cycles should be chosen at the beginning. As an indication and under 'normal' operating condi-
tions a calibration cycle of approx. 3-5 years applies.
Transducers must be returned to the manufacturer for calibration. Please refer to Section 17!
