HT instruments HT322 - Manual (Page 5)

HT321 - HT322
EN - 4
2. GENERAL DESCRIPTION
This meter performs the herewith measurements:
 DC
Voltage
 AC sine voltage
 Resistance
 Continuity
test
 Diode
test
 Temperature with type K probe (only HT322)
All selectable by means of a 6-position rotary selector (including OFF position). Also are
available the HOLD key to hold the displayed value, the R key for manual selection of
measure ranges, the MAX key for measure of maximum value and SEL key for selection
between diode test and continuity test and temperature measures in °C or °F (only
HT322).
The selected quantity is displayed with indication of measuring unit and active functions.
The instrument disposes of an Auto Power Off function consisting in an automatic
switching off 15 minutes after last selector rotation.
3. PREPARATION FOR USE
3.1. INITIAL
This instrument was checked both mechanically and electrically prior to shipment. All
possible cares and precautions were taken to let you receive the instrument in perfect
conditions. Notwithstanding we suggest you to check it rapidly (eventual damages may
have occurred during transport – if so please contact the local distributor from whom you
bought the item).
Make sure that all standard accessories mentioned in § 6.3.1 are included. Should you
have to return back the instrument for any reason please follow the instructions mentioned
in § 7.
3.2. SUPPLY
VOLTAGE
The instrument is supplied by 2x1.5V batteries type IEC AAA LR03. When batteries are
low, a low battery indication is displayed. To replace/insert batteries please refer to § 5.2.
3.3. CALIBRATION
The instrument complies with the technical specifications contained in this manual and
such compliance is guaranteed for 1 year. Annual recalibration is recommended.
3.4. STORAGE
After a period of storage in extreme environmental conditions exceeding the limits
mentioned in § 6.2.1 let the instrument resume normal measuring conditions before using
it.