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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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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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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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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4. OPERATING INSTRUCTIONS
4.1. INSTRUMENT DESCRIPTION
CAPTION:
1
2
3
4
5
6
7
8
9
1. Protective cap
2. Fixed lead L2
3. Mobile lead L1
4. Torch light
5. Leds and Display
6. Electrode for phase detection, phase rotation,
continuity function
7. “Torch” button
8. “Lamp test” button (HT9) / ON/Reset button (HT6,
HT8)
9. Banana connector
Fig. : 1: Instrument description
1
2
3
4
5
6
7
CAPTION:
1. Voltage indication leds
2. Buzzer hole for acoustic signal
3. Indication led Lamp test
4. Indication led Phase sequence
5. Indication led Phase detection / Dangerous voltage
6. Indication led Continuity test
7. Indication led 12V and positive or negative polarity
8. LCD display with voltage, polarity and flat battery
indication
8
Fig. 2: Led and display description
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4.2. AUTO POWER ON MODE / SWITCHING ON
The instruments switch on in the following cases:
if continuity is detected;
if an AC or DC voltage higher than 10V is detected;
if a live phase is connected to lead L2;
of the Torch button is pressed;
if the ON/Reset button is pressed (on models HT6 and HT8);
if the Lamp test button is pressed (on model HT9)
4.3. AUTO POWER OFF MODE
The following conditions are possible:
the instruments automatically switch off if no signal is detected in contact with leads
for 5 seconds;
the torch light turns off after 10 seconds after the torch button has been released;
the lamp test is stopped and the instrument switches off after 5 seconds when the
Lamp test button is released.
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5. INSTRUMENT FUNCTIONS
5.1. VOLTAGE MEASUREMENT AND POLARITY INDICATION
The maximum input AC and DC voltage is 690V. Do not measure
voltages exceeding the limits given in this manual. Exceeding these
limits could result in electrical shocks to the user and damage to the
instrument.
The Dangerous voltage led (see Fig. 2 – no. 5) lights up and the buzzer
sounds, in case of voltage between terminals >50V AC or >50V DC,
even in case of low battery charge or when no batteries are installed
(without batteries the buzzer does not sound).
After a lamp test it is necessary to wait 5 seconds before being able to
perform a voltage measurement.
Fig. : 3: Voltage measurement
WARNING
1. Connect the measuring leads L1 and L2 to
the object to be tested. Measurement is only
carried out by contact between the leads
and the metal parts of the conductors.
2. The instrument automatically switches on and
the measured voltage value is indicated when
the leds turn on and, for models HT8 and
HT9, also on the LCD display (see Fig. 2 –
nos. 1 and 8).
3. While measuring, the instrument could also
show leds or on. This is no indication
of malfunction.
Polarity is indicated as follows (see Fig. 2 – no.
7):
AC: leds + and – 12V are on;
+DC: led +12V is on (lead L2 connected to
positive pole);
-DC: led -12V is on (lead L2 connected to
negative pole).
In case of measurements in environments with
poor light, press the Torch button (see Fig. : 1 –
no. 7) to activate the white LED pointer.
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5.2. PHASE DETECTION FUNCTION WITH 1 TERMINAL
WARNING
The maximum input AC and DC voltage is 690V. Do not measure
voltages exceeding the limits given in this manual. Exceeding these
limits could result in electrical shocks to the user and damage to the
instrument.
The quality of the indication cannot be reliable if you work under
unfavourable conditions such as, for example, on wooden ladders, in
rooms with insulated floors, etc.
Correct indication is only guaranteed for AC voltage in a range between
100V and 690V and with a frequency between 50Hz and 60Hz
1. Touch the contact “Electrode” with a finger (see
Fig. : 1– no. 6).
2. Connect the fixed lead L2 to the point of the
object to be tested where the presence of AC
voltage needs to be verified. The test is only
carried out by contact between the lead and
the metal part of the conductor.
3. The instrument switches on automatically and
the Phase detection/Dangerous voltage LED
turns on (see Fig. 2 – no. 5) and the buzzer
sounds continuously to indicate that an AC
voltage higher than 100V has been detected.
In case of measurements in environments with poor
light, press the Torch button (see Fig. : 1 – no. 7) to
activate the white LED pointer.
Fig. : 4: Phase detection
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5.3. PHASE SEQUENCE
WARNING
The maximum input AC and DC voltage is 690V. Do not measure
voltages exceeding the limits given in this manual. Exceeding these
limits could result in electrical shocks to the user and damage to the
instrument.
Correct indication is only guaranteed for AC voltage in a range between
100V and 690V and with a frequency between 50Hz and 60Hz on threephase 4-wire electrical systems.
The quality of the indication cannot be reliable if you work under
unfavourable conditions such as, for example, on wooden ladders, in
rooms with insulated floors, etc.
1. Touch the contact “Electrode” with a finger
(see Fig. : 1– no. 6).
2. Connect the measuring lead L1 onto
Phase L1 and the measuring lead L2 onto
Phase L2 of the three-phase system being
tested. The test is only carried out by
contact between the lead and the metal
part of the conductor.
3. The instrument turns on automatically and
the led
(clockwise rotation) turns on in
case of correct sequence.
The led (counterclockwise rotation)
turns on in case of incorrect sequence.
In case of measurements in environments with
poor light, press the Torch button (see Fig. : 1
– no. 7) to activate the white LED pointer.
Fig. : 5: Phase sequence function
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5.4. CONTINUITY TEST
WARNING
Before carrying out any continuity test, check that the resistance to be
measured is not live. Failure to respect this prescription may seriously harm
the operator.
1. Connect the measuring leads L1 and L2 to the object
to be tested (see Fig. 6).
2. The instrument switches on automatically together with
led RX (see Fig. 2 – no. 6) and the buzzer sounds
continuously in case the result of the continuity test is
positive.
3. The continuity test is active if the resistance to be
tested is lower than 500k.
In case of measurements in environments with poor light,
press the Torch button (see Fig. : 1 – no. 7) to activate the
white LED pointer.
Fig. 6: Continuity test
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5.5. LAMP TEST
WARNING
During the test, do not touch the socket of the lamp, as you may obtain
unreliable results.
During the test, do not touch the test lead, as a high test voltage is
present.
During the test with the test lead, do not touch any other object than the
lamp being tested.
After a lamp test it is necessary to wait 5 seconds before being able to
perform a voltage measurement
The instrument allows quickly detecting the presence of faults on discharge lamps filled
with low or high-pressure gas.
Measuring procedure:
Use the L2 lead (see Fig. : 1 – no. 2) to touch the glass or the supply socket of the
lamp.
Press and hold the “Test” button (see Fig. : 1 – no. 8) for the whole duration of the test.
After approx. 0.5 seconds, if the gas inside the lamp is efficient, the lamp starts
flashing.
Fluorescent tube test
If, during the test, fluorescent tubes light up but they do not work once installed, the coiled
filament or the supply may be defective.
The filaments and the supplies may be tested using the instrument's Continuity test
function (see § 5.4).
WARNING
Check the supplies and the capacitors only when they have been disconnected
from live circuits and when the capacitors are flat. These conditions must be
verified through voltage measurements.
Low-pressure sodium lamp test
Touch the glass or a supply pole of the tube with the lead and press the “Test” button. If
the tube lights up it means that the tube is intact. In some cases, only a part of the tube
lights up; to check the other part, repeat the test procedure touching the other supply pole.
High-pressure sodium lamp test
Touch the glass or a supply pole of the tube with the lead and press the “Test” button. If a
light blue line appears inside the tube, it means that the tube is intact.
Possible other results indicate a defective tube.
Neon tube test
Touch the glass or a supply pole of the tube with the lead and press the “Test” button. If
lighting is not visible, the tube must be replaced.
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Mercury-vapour lamp and halogen lamp test
Touch the glass of the tube or a supply pole with the lead and press the “Test” button. If
lighting is not steady, the tube is defective. If the tube only operates when it is not installed
and turns off and on or seems unsteady when it is installed, check that the tube is not
unusually overheated, as this may cause a repeated opening and closing of the tube
switch.
6. MAINTENANCE
6.1. GENERAL INFORMATION
1. While using and storing the instrument, carefully observe the recommendations listed
in this manual in order to prevent possible damage or danger during use.
2. Do not use the instrument in environments with high humidity levels or high
temperatures. Do not expose to direct sunlight.
3. In case the instrument is not to be used for a long time, remove the batteries to avoid
liquid leaks that could damage the instruments internal circuits.
6.2. BATTERY REPLACEMENT
Only expert and trained technicians should perform this operation. Before
carrying out this operation, make sure that the instrument has been
disconnected from all circuits.
1. Loosen the battery cover fastening screws and remove the cover.
2. Remove the flat batteries from the battery compartment.
3. Insert the new batteries of the same type. Pay attention to the correct polarity.
4. Position the battery cover back over the compartment and fasten it with the relevant
screws.
5. Do not scatter old batteries into the environment. Use the relevant containers for
disposal.
6.3. CLEANING THE INSTRUMENT
Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
6.4. END OF LIFE
WARNING
WARNING: the symbol on the instrument indicates that the appliance and its
accessories must be collected separately and correctly disposed of.
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7. TECHNICAL SPECIFICATIONS
7.1. TECHNICAL CHARACTERISTICS
Voltage measurement with LEDs
Voltage range: 12690V AC (16400Hz), DC (±)
Rated voltages: 12/24/50/120/230/400/690V AC (16400Hz),
DC:
Tolerance: in compliance with EN61243-3
ELV indications: >50VAC, >50VDC
Response time: < 1s at 100% of any rated voltage
Working time: after 30s of continuous measurement, the
instrument must make a pause of 240s before
starting a new measurement.
Consumption during measurement: approx. 50mA (battery 3V, measuring 690V AC)
(HT6, HT8)
Voltage measurement with LCD (HT8, HT9)
Accuracy indicated as [%reading + (number of digits)] at 23°C±5°C, <70%HR
AC/DC voltage
Range [V] Resolution [V] Precision
Input
impedance
Max voltage
10.0690.0
Max input current: <3.5mA (at 690V); Automatic AC/DC voltage detection;
Frequency range: 16 - 400Hz; “OL”: Over Range indication
0.1
(3rdg+5digits) 200K
690VAC/DC
Phase detection function (HT6, HT8, HT9)
Voltage range: 100690V
Frequency: 50 / 60Hz
Phase sequence (HT6, HT8, HT9)
Voltage range: 120400V Phase-Earth;
Frequency range: 50/60Hz;
Measuring mode: 2 terminals on non-isolated parts
Continuity test (HT6, HT8, HT9)
Detection range: 0500kΩ + 50%
Lamp test (HT9)
Voltage with new battery: approx. 3kV / 240kHz
Range intensity 200-280 kHz: approx. 100µV/m
Indications: “Test” LED on
Charging time before test: <0.5 sec
Flashing frequency: 2Hz
Test time: typically <2 sec
Working time: may operate in continuous mode
Consumption during test: approx. 500mA
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7.2. GENERAL CHARACTERISTICS
Power supply
Internal power supply: 2x1.5V AAA, IEC LR03
Mechanical characteristics
Size: 255(L) x 60(La) x 35(H)mm
Weight (battery included): approx. 170g
Mechanical protection: IP64
Considered standards
Instrument safety: IEC/EN61010-1 (HT8, HT9);
IEC/EN61010-2-030 (HT8, HT9);
IEC/EN61243-3:2010 (HT6, HT8, HT9)
Insulation: double insulation
Overvoltage category: CAT III 690V; CAT IV 600V
Max height: 2000m
Pollution level: 2
7.3. ENVIRONMENT
7.3.1. Environmental conditions for use
Calibration reference temperature: 23 ± 5°C
Operating temperature: -15 ÷ 55°C
Allowable relative humidity: <85%
Storage temperature: -20 ÷ 70°C
This instrument satisfies the requirements of Low Voltage Directive 2006/95/EEC
(LVD) and of EMC Directive 2004/108/EEC
7.4. ACCESSORIES
7.4.1. Accessories provided
Batteries (not inserted)
User manual
Protective cap for test leads, 2 pcs
Adapter for 4mm test lead tip, 2 pcs
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8. SERVICE
8.1. WARRANTY CONDITIONS
This instrument is warranted against any material or manufacturing defect, in compliance
with the general sales conditions. During the warranty period, defective parts may be
replaced. However, the manufacturer reserves the right to repair or replace the product.
Should the instrument be returned to the After-sales Service or to a Dealer, transport will
be at the Customers charge. However, shipment will be agreed in advance.
A report will always be enclosed to a shipment, stating the reasons for the products return.
Only use original packaging for shipment; any damage due to the use of non-original
packaging material will be charged to the Customer.
The manufacturer declines any responsibility for injury to people or damage to property.
The warranty shall not apply in the following cases:
Repair and/or replacement of accessories and batteries (not covered by warranty).
Repairs that may become necessary as a consequence of an incorrect use of the
instrument or due to its use together with non-compatible appliances.
Repairs that may become necessary as a consequence of improper packaging.
Repairs which may become necessary as a consequence of interventions performed
by unauthorized personnel.
Modifications to the instrument performed without the manufacturers explicit
authorization.
Use not provided for in the instruments specifications or in the instruction manual.
The content of this manual cannot be reproduced in any form without the manufacturers
authorization.
Our products are patented and our trademarks are registered. The manufacturer
reserves the right to make changes in the specifications and prices if this is due to
improvements in technology.
8.2. SERVICE
If the instrument does not operate properly, before contacting the After-sales Service,
please check the conditions of the battery and replace it, if necessary.
Should the instrument still operate improperly, check that the product is operated
according to the instructions given in this manual.
Should the instrument be returned to the After-sales Service or to a Dealer, transport will
be at the Customers charge. However, shipment will be agreed in advance.
A report will always be enclosed to a shipment, stating the reasons for the products return.
Only use original packaging for shipment; any damage due to the use of non-original
packaging material will be charged to the Customer..
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