ET5
ELECTRICAL TESTER
Instruction
Manual
GENERAL SAFETY INFORMATION: Always read before proceeding.
Warning
These instructions contain both information and warnings that are necessary for the
safe operation and maintenance of this product. It is recommended that you read the
instructions carefully and ensure that the contents are fully understood. Failure to
understand and to comply with the warnings and instructions can result in serious
injury, damage or even death.
In order to avoid the danger of electrical shock, it is important that proper safety
measures are taken when working with voltages exceeding 30V AC rms, 42V AC
peak or 60V DC.
This product must only be used by a competent person capable of interpreting the
results under the conditions and for the purposes for which it has been constructed.
Particular attention should be paid to the Warnings, Precautions and Technical
Specifi cations. Always check the unit is in good working order before use and that
there are no signs of damage to it. Do not use if damaged.
Where applicable other safety measures such as use of protective gloves, goggles
etc. should be employed.
Please keep these instructions for future reference. Updated instructions and
product information are available at: www.martindale-electric.co.uk
REMEMBER: SAFETY IS NO ACCIDENT
MEANING OF SYMBOLS:
Equipment complies with relevant EU Directives
End of life disposal of this equipment should be
in accordance with relevant EU Directives
Caution - risk of electric shock
Caution - risk of danger & refer to instructions
Equipment protected by double or reinforced insulation (Class II)
Alternating current (AC)
Direct current (DC)
Earth (ground)
Application around and removal from HAZARDOUS LIVE
conductors is permitted.
Thank you for buying one of our products. For safety and full
understanding of its benefi ts please read this manual before use.
Technical support is available from 01923 441717 and support@
martindale-electric.co.uk.
CONTENTS
1 Introduction 1
1.1 Inspection 1
1.2 Description 1
1.3 Accessories 1
1.4 Battery Installation 1
2 Product Specifi c Safety Information 2
2.1 Precautions 2
3 Operation 4
3.1 General 4
3.2 Low Battery Indication 5
3.3 High Voltage / Continuity LED 5
3.4 Description of Press Buttons 5
3.5 Description of LCD Symbols 5
3.6 Auto Power Off 6
3.7 Auto/Manual Ranging 6
3.8 Display Hold 7
3.9 Backlight / LED Torch 7
3.10 Simultaneous Measurement of Voltage and Current 7
3.11 Use of TL17 Test Leads 7
3.12 AC Voltage Measurement 8
3.13 DC Voltage Measurement 8
3.14 AC Current Measurement 9
3.15 DC Current Measurement (200A range) 9
3.16 DC Current Measurement (500μA range) 10
3.17 Resistance Measurement 10
3.18 Capacitance Measurement 10
3.19 Frequency & Duty Cycle Measurement 11
3.20 Temperature Measurement 11
3.21 Temperature Offset Adjustment 12
3.22 Continuity Testing 12
3.23 Diode Testing 13
3.24 Use as a Non-contact Voltage Detector 13
4 Maintenance 15
4.1 Battery Replacement 15
4.2 Test Lead Replacement 15
4.3 Calibration 15
4.4 Cleaning 15
4.5 Repair & Service 16
4.6 Storage Conditions 16
5 Warranty 17
Specifi cations
1. INTRODUCTION
1.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the unit
and any accessories for damage. If there is any damage then consult
your distributor immediately.
2. PRODUCT SPECIFIC SAFETY INFORMATION
Measurement Category III (CAT III) is applicable to test and
measuring equipment connected to the distribution part of the
building’s low-voltage MAINS installation.
1.2 Description
The ET5 is an electrical tester with the following functions:
AC & DC current to 200A
AC & DC voltage to 600V
Resistance to 50M:
Capacitance to 5mF
Frequency to 1 MHz.
Temperature (K type thermocouple), -35°C to 500°C
Duty Cycle
Continuity with audible indication
Diode testing
Further functions are:
Non-contact voltage indicator
Simultaneous measurement
Auto power off
Display hold
Display backlight
Auto ranging
1.3 Accessories (included)
TL17 test leads
9V battery
K type thermocouple
Instructions
1.4 Battery Installation
Refer to Section 4.1 (Battery Replacement) for the battery installation
instructions for the ET5.
2.1 Precautions
This product has been designed with your safety in mind, but please
pay attention to the following warnings and cautions before use.
Warnings
Before use check the unit for cracks or any other damage. Make
sure the unit is free from dust, grease and moisture. Do not use if
damaged.
Do not use if the battery cover is not fi tted.
Always test this unit on an appropriate proving device or known
voltage source before and after using it to determine if a hazardous
voltage exists in a circuit to be tested.
When positioning the fork around a hazardous live conductor always
keep your fi ngers behind the fork fi nger guard.
Measuring a voltage that exceeds the specifi ed limits of the unit may
damage the unit and expose the operator to a shock hazard. Always
check the unit’s specifi ed limits before use.
Before use check the test leads and any accessories for any
damage. Make sure they are free from dust, grease and moisture.
The test leads have contrasting outer and inner insulation, to
allow damage to the test leads to be easily identifi ed. Do not use if
2
damaged.
1
When using test leads, always keep your fi ngers behind the fi nger
guards on the test lead probes.
When this unit is used in combination with test leads, the
measurement category of the combination is the lower
measurement category of either this unit or the test leads used.
Likewise if test lead accessories such as crocodile clips are also
used, the measurement category will be the lowest measurement
category in that combination.
If the insulated end caps are not fi tted to the TL17 test leads, the
measurement category becomes CAT II 1000V, and the test leads
must not be used on CAT III or CAT IV installations to avoid the risk
of shorting high energy circuits and arc fl ash.
Test leads and any test lead accessories must be properly seated
and fi rmly connected before use.
To avoid electrical shock, and damage to the instrument, do not
use this instrument with its associated temperature probe when the
voltage at the measurement surface exceeds 30V DC/AC rms.
Cautions
Avoid severe mechanical shock or vibration and extreme
temperature.
To avoid burns or damage to equipment, do not take temperature
measurements inside microwave ovens.
3. OPERATION
3.1 General
If the magnitude of a parameter to be measured is uncertain, but
known to be within the maximum safe limits of the electrical tester,
manually set the range to maximum. E.g. If measuring AC voltage
and the voltage magnitude is unknown, set the range to 600V, then
if required select the correct range for a satisfactory reading.
If the electrical tester displays OL or -OL then the measurement
limits of the range have been exceeded.
Remove the batteries when not in use for an extended period, to
avoid corrosion from leaking batteries.
1
LED torch
2
NCV sensor
3
High voltage/ continuity LED
3
4
3.2 Low Battery Indication
A
The battery capacity is shown by the
If the
symbol is fl ashing followed by a LO.Bt display, the battery
symbols on the LCD.
needs replacing as measurement accuracy can no longer be
guaranteed (See section 4.1 Battery Replacement).
3.3 High Voltage / Continuity LED
The LED will fl ash red when the voltage being measured is t 30V
DC/AC rms, or the presence of a live voltage is detected when the
NCV function is selected. The buzzer will also sound.
The LED will illuminate green when the resistance being measured
is < 30: when the continuity function is selected.
3.4 Description of Press Buttons
Selects manual ranging
Turns on/off the backlight and LED torch
SEL/
Selects alternate or additional functions
Zeroes the DC 200A range
HOLD Selects display hold
3.5 Description of LCD Symbols
DC Indicates DC measurement
Manual ranging is selected
H
Display hold is activated
Continuity function is selected
Diode testing function is selected
Indicates battery level
%, °F, Hz Units of measurement being displayed (Upper display)
μA, A
°C, mV, V, Units of measurement being displayed (Lower display)
μF, mF, :,
k:, M:, Hz
3.6 Auto Power Off
If the electrical tester is inactive for a period of 30 minutes it will
automatically power off.
If any button is pressed after the electrical tester has automatically
powered off, it will turn back on.
To disable the auto power off function hold the
button at the
same time as turning the rotary switch from OFF to any position.
The APO symbol will no longer be displayed on the LCD.
Upper display
Lower display
APO Auto power off is activated
Flashes to indicate the presence of >30V AC/ DC
AC Indicates AC measurement
To exit manual ranging, hold down the button for 2 seconds. The
symbol will no longer be displayed.
3.8 Display Hold
To hold a displayed value, press the HOLD button. The LCD will
H
display
.
To exit display hold, press the HOLD button again.
3.9 Backlight/LED Torch
To switch on the backlight and LED torch press the
button. Press
again to turn the backlight and LED torch off.
3.7 Auto/Manual Ranging
The DC voltage, resistance and capacitance functions have auto
ranging capability and will default to auto ranging when selected.
To select manual ranging, press the
button. The symbol will
be displayed to signify manual ranging is selected.
To manually select a range when in manual mode press the
button until the required range is selected.
5
6
CAT III 1000V CAT IV 600V
CAT II 1000V ONLY,
DO NOT USE on CAT III
or CAT IV installations
One test lead may be attached to the side
of the electrical tester for ease of use when
making measurements.
Automatic turn off is after approx. 1 minute.
The LED torch is positioned in the tip of the left hand fork.
3.10 Simultaneous Measurement of Voltage and Current
The upper and lower displays of the LCD allow measurements of
different parameters to be made simultaneously.
Hz
A
V
When the rotary switch is set to the
position either AC voltage
and AC current or AC voltage and the frequency of the AC current
3.12 AC Voltage Measurement
COM
Connect the black test lead to the
+
lead to the
Set the rotary switch to the
terminal.
Hz
A
V
terminal and the red test
position.
The AC voltage function is manual ranging only, and defaults to the
500V range when this function is selected.
can be measured simultaneously.
A
When the rotary switch is set to the
position DC voltage and DC
current can be measured simultaneously.
3.11 Use of TL17 Test Leads
Where access to test points may require extended probe tips, the
insulated probe tip covers may be removed by gently pulling them
forward until they unclip from the probe body.
7
Taking all necessary safety precautions connect the test leads to
the circuit being measured and read the measured voltage from the
lower display.
3.13 DC Voltage Measurement
COM
Connect the black test lead to the
+
lead to the
terminal.
Set the rotary switch to the
8
A
terminal and the red test
position.
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