HT instruments HT9 User Manual
ENGLISH
User manual
Copyright HT ITALIA 2014 Version EN 1.02 - 24/02/2014
HT6-HT8-HT9
Table of contents:
1. PRECAUTIONS AND SAFETY MEASURES ........................................................................... 2
1.1. Preliminary instructions .................................................................................................................... 2
1.2. During use ........................................................................................................................................ 3
1.3. After use ........................................................................................................................................... 3
1.4. Definition of measurement (overvoltage) category .......................................................................... 3
2. GENERAL DESCRIPTION ....................................................................................................... 4
3. PREPARATION FOR USE ....................................................................................................... 4
3.1. Initial checks ..................................................................................................................................... 4
3.2. Instrument power supply .................................................................................................................. 4
3.3. Calibration ........................................................................................................................................ 4
3.4. Storage ............................................................................................................................................. 4
4. OPERATING INSTRUCTIONS ................................................................................................. 5
4.1. Instrument description ...................................................................................................................... 5
4.2. Auto power on mode / Switching on ................................................................................................. 6
4.3. Auto power off mode ........................................................................................................................ 6
5. INSTRUMENT FUNCTIONS ..................................................................................................... 7
5.1. Voltage measurement and polarity indication .................................................................................. 7
5.2. Phase detection function with 1 terminal .......................................................................................... 8
5.3. Phase sequence ............................................................................................................................... 9
5.4. Continuity test ................................................................................................................................. 10
5.5. Lamp test ........................................................................................................................................ 11
6. MAINTENANCE ...................................................................................................................... 12
6.1. General information ........................................................................................................................ 12
6.2. Battery replacement ....................................................................................................................... 12
6.3. Cleaning the instrument ................................................................................................................. 12
6.4. End of life ....................................................................................................................................... 12
7. TECHNICAL SPECIFICATIONS ............................................................................................. 13
7.1. Technical characteristics ................................................................................................................ 13
7.2. General characteristics ................................................................................................................... 14
7.3. Environment ................................................................................................................................... 14
7.3.1. Environmental conditions for use ..................................................................................................... 14
7.4. Accessories .................................................................................................................................... 14
7.4.1. Accessories provided ....................................................................................................................... 14
8. SERVICE ................................................................................................................................ 15
8.1. Warranty conditions ........................................................................................................................ 15
8.2. Service ........................................................................................................................................... 15
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HT6-HT8-HT9
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to
electronic measuring instruments. For your safety and in order to prevent damaging the
instrument, please carefully follow the procedures described in this manual and read all
notes preceded by the symbol with the utmost attention.
Before and after carrying out the measurements, carefully observe the following
instructions:
Do not carry out any voltage or current measurement in humid environments.
Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in dusty environments.
Avoid any contact with the circuit being measured if no measurements are being
carried out.
Avoid any contact with exposed metal parts, with unused measuring probes, circuits,
etc.
Do not carry out any measurement in case you find anomalies in the instrument such
as deformation, breaks, substance leaks, etc.
Do not carry out any measurement in case of rain or bad weather.
Do not carry out any measurement with open battery compartment.
Pay special attention when measuring voltages higher than 20V, since a risk of
electrical shock exists .
In this manual, and/or on the instrument, the following symbols are used:
Warning: observe the instructions given in this manual; improper use could
damage the instrument or its components.
High voltage danger: electrical shock hazard.
Double-insulated meter.
1.1. PRELIMINARY INSTRUCTIONS
This instrument has been designed for use in environments of pollution degree 2.
It can be used for VOLTAGE measurements on installations with measurement
category CAT IV 600V – CAT III 690V. For a definition of measurement categories, see
§ 1.4.
We recommend following the normal safety rules devised by the procedures for
carrying out operations on live systems and using the prescribed PPE to protect the
user against dangerous currents and the instrument against incorrect use.
Do not test circuits exceeding the specified voltage limits.
Make sure the batteries are installed correctly.
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HT6-HT8-HT9
1.2. DURING USE
Please carefully read the following recommendations and instructions:
WARNING
Failure to comply with the caution notes and/or instructions may damage
the instrument and/or its components or be a source of danger for the
operator.
When the instrument is connected to the circuit being tested, do not touch any unused
terminal.
Avoid measuring continuity if external voltages are present.
1.3. AFTER USE
If the instrument is not to be used for a long time, remove the batteries.
1.4. DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY
Standard CEI 61010: Safety requirements for electrical equipment for measurement,
control and laboratory use, Part 1: General requirements, defines what measurement
category, commonly called overvoltage category, is. § 6.7.4: Measured circuits, circuits are
divided into the following measurement categories:
(OMISSIS)
Measurement category IV is for measurements performed at the source of the low-
voltage installation.
Examples are electricity meters and measurements on primary overcurrent protection devices
and ripple control units.
Measurement category III is for measurements performed on installations inside
buildings.
Examples are measurements on distribution boards, circuit breakers, wiring, including cables,
bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for
industrial use and some other equipment, for example, stationary motors with permanent
connection to fixed installation.
Measurement category II is for measurements performed on circuits directly
connected to the low-voltage installation.
Examples are measurements on household appliances, portable tools and similar equipment.
Measurement category I is for measurements performed on circuits not directly
connected to MAINS.
Examples are measurements on circuits not derived from MAINS, and specially protected
(internal) MAINS-derived circuits. In the latter case, transient stresses are variable; for that
reason, the standard requires that the transient withstand capability of the equipment is made
known to the user.
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HT6-HT8-HT9
2. GENERAL DESCRIPTION
This manual refers to the following products: HT6, HT8, HT9. The characteristics of the
models are listed in the following table:
Function HT6 HT8 HT9
Test lamps with internal gas
AC/DC voltage and polarity measurement
Phase sequence
Continuity test
Phase detection function with 1 terminal
Torch function
LCD display
Tab. 1: Characteristics of the models
The instrument can also be used to check reactors, starters, capacitors and resistors,
further to the following kinds of lamps:
Fluorescent lamps
Low-pressure sodium lamps
High-pressure sodium lamps
Neon tubes
Mercury-vapour lamps and halogen lamps
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical
point of view. All possible precautions have been taken so that the instrument is delivered
undamaged.
However, we recommend generally checking the instrument in order to detect possible
damage suffered during transport. In case anomalies are found, immediately contact the
forwarding agent.
We also recommend checking that the packaging contains all components indicated in §
7.4. In case of discrepancy, please contact the Dealer.
In case the instrument should be returned, please follow the instructions given in § 8.2.
3.2. INSTRUMENT POWER SUPPLY
The instrument is supplied with two 1.5V AA IEC LR03 alkaline batteries, included in the
package.
In order to prevent battery discharge, batteries have not been inserted in the instrument.
For battery installation and replacement, follow the instructions given in § 6.2.
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. The instruments
performance is guaranteed for 12 months.
3.4. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see
the environmental specifications contained in § 7.3.1 before use).
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