HT instruments HT300 User Manual

ENGLISH

User manual

©Copyright HT ITALIA 2010 Release EN 2.00 - 14/06/2010

HT300

Index:

1. SAFETY PRECAUTIONS AND PROCEDURES ...................................................................... 2

1.1. Preliminary ............................................................................................................2

1.2. During use.............................................................................................................2

1.3. After use................................................................................................................2

2. GENERAL DESCRIPTION ....................................................................................................... 3

3. PREPARATION FOR USE ....................................................................................................... 3

3.1. Initial......................................................................................................................3

3.2. Power supply.........................................................................................................3

3.3. Calibration .............................................................................................................3

3.4. Storage..................................................................................................................3

4. OPERATING INSTRUCTIONS................................................................................................. 4

4.1. Instrument description...........................................................................................4

4.2. Function key description........................................................................................4

4.2.1. °C/°F key...................................................................................................................... 4

4.2.2. TYPE key..................................................................................................................... 4

4.2.3. MAX MIN key............................................................................................................... 4

4.2.4. HOLD key..................................................................................................................... 5

4.2.5. REL key........................................................................................................................ 5

4.2.6. Offset adjustment of external probe............................................................................. 5

4.2.7. Disabling auto power OFF ........................................................................................... 5

4.3. Temperature measurement...................................................................................6

5. MAINTENANCE........................................................................................................................6

5.1. General information...............................................................................................6

5.2. Battery replacement ..............................................................................................6

5.3. Cleaning ................................................................................................................6

5.4. End of life ..............................................................................................................6

6. TECHNICAL SPECIFICATIONS............................................................................................... 7

6.1. Characteristics.......................................................................................................7

6.1.1. General data ................................................................................................................ 7

6.2. Environmental conditions ......................................................................................7

6.2.1. Climatic conditions....................................................................................................... 7

6.3. Accessories...........................................................................................................7

7. SERVICE .................................................................................................................................. 8

7.1. Warranty conditions...............................................................................................8

7.2. Service ..................................................................................................................8

EN - 1

HT300

1. SAFETY PRECAUTIONS AND PROCEDURES

This apparatus conforms to EMC standards relating to electronic measuring instruments.
For your own safety and that of the apparatus, you must follow the procedures described

in this instruction manual and specially read all the notes preceded by the symbol
carefully.

Strictly keep to the following instructions before and during measurements:

• Do not effect measurements in environments with explosive gas, fuels or dust.

• Do not effect any measurement in case of unusual conditions of the instrument such as

deformation, breakage, leakage of substances, absence of display reading etc.

The following symbols are used on the instrument and in this manual:

Caution: refer to the instructions reported on this manual; improper use may
damage the apparatus or its components.

Ground reference

1.1. PRELIMINARY

• Use the meter only as specified in this manual; otherwise, the protection provided by
the meter may be impaired.

• Only the accessories supplied with the instrument guarantee compliance with the
safety standards. They must be in good conditions and must be replaced, if necessary,
with identical models.

• Do not effect measurements beyond the limits specified in this manual.

• Check that batteries have been placed correctly.

1.2. DURING USE

Carefully read the following recommendations and instructions:

CAUTION

No compliance with the Warnings and/or Instructions may damage the
apparatus and/or its components or injure the operator.

• Use the meter and the probes only within the ranges specified in this manual and in the
probes’ ones.

• Do not perform any measurement on materials under voltage. This could damage the
instrument.

• If during a measurement the read value or sign never changes, please verify if the
HOLD function is active.

1.3. AFTER USE

• When the measurements are completed switch OFF the instrument.

• Remove batteries when the apparatus remains unused for long periods.

EN - 2