HT 53, User Manual, Page: 26 / 88

HT53 - HT53/05
EN - 7
5 OPERATING INSTRUCTIONS
5.1 Illuminance
measurement
CAUTION

Maximum input voltage is 10
Vrms

Do not attempt to apply any
voltage that exceeds the limits
indicates in this manual to
avoid electrical shock hazard
or damage the instrument
1. Connect the probe to the multifunction
instrument or multimeter (see relative
user manuals)
2. Remove the protection cap of the probe
3. Switch on the probe from “OFF” position
to one of “20Lux”, “2kLux” or “20kLux”
positions. The red LED “Power” light up
4. Read the measurement result on the
multifunction instrument or multimeter
(see relative user manuals)