Uvp UVX Radiometer User Manual download pdf (Page 13)

UVX Radiometer 13

Change the range switch to the 20 uW/cm

position. The display should now indicate 0.10

uW/cm2 and the voltmeter should read .0100 volts Again, if the voltmeter indication did not

decrease by a factor of 10, then the malfunction is in the range changing switch and the unit must

be returned to UVP for repair.

In the event the input amplifier, U1, the range changing switch, and integrated circuit, U4, are

found to be functioning correctly, then the malfunction is in the UVX sensor.

Note: For direct traceability to NIST standards, the sensor must be returned to UVP for repair and

recalibration. Refer to the section in the manual on Sensor Details.

Figure 2: Radiometer Functional Block Diagram

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Uvp UVX Radiometer User Manual Page 13