HT instruments HT307 - Manual (Page 3)

HT307
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
For your own safety and to avoid damaging the instrument follow the procedures
described in this instruction manual and read carefully all notes preceded by this symbol
.
Do not use the meter in presence of explosive gas (material), combustible gas (material),
steam or dust.
The followings symbols are used:
Caution: refer to the instruction manual. An incorrect use may damage the
luxmeter or its components.
1.1. PRELIMINARY
• Before turning on the instrument make sure that the battery is correctly installed.
Replace the battery as soon as the low battery indication (“ ”) is displayed.
• Don’t touch the photodiode sensor during measurements to prevent any damage due
to contamination or static electricity.
1.2. DURING USE
Always keep to the instructions contained in this manual.
CAUTION
An improper use may damage the instrument and/or its components or
injure the operator.
• If the reading value or the sign indication remains unchanged during the
measurement, check if the DATA HOLD function is active.
1.3. AFTER USE
• After using the instrument turn it off.
• If you expect not to use the instrument for a long period remove the battery to avoid
leakages of battery liquids which may damage its inner components.