Morris Products 57262 Assembly instructions

CONTENTS PAGE
SAFETY INFORMATION……………………...
SYMBOL EXPLANATION …………………….
SAFETY PRECAUTIONS……………………..
MAINTENANCE………………………………..
GENERAL DESCRIPTION……………………
PANEL DESCRIPTION………………………..
FORWARD LAYOUT…………………………..
OPERATING INSTRUCTIONS……………….
SPECIFICATIO
NS……………………………..
AUTO POWER OFF…………………………..
REPLACING THE BATTERY…………………
ACCESSORIES………………………………..
1
2
2
4
4
5
8
9
14
18
18
19
SAFETY INFORMATION
The digital clamp meter has been designed
according to IEC1010 −1 and IEC1010 −2 −032
concerning safety requirements for electrical
measuring instruments and hand-held current
clamps with double insulation overvoltage category
1000V CAT II 600V CAT III and pollution 2.
This meter complies with the requirements of the
following European Community Directives:
89 / 336 / EEC (Electromagnetic Compatibility) and
73 / 23 / EEC (Low Voltage) as amended by 93 /
68 / EEC (CE Marking).
However, electrical noise or intense electromag-
netic fields in the vicinity of the equipment may
disturb the measurement circuit.
Measuring instruments will also respond to
unwanted signals that may be present within the
measurement circuit.
Users should exercise care and take appropriate
precautions to avoid misleading readings.
−1 −

SYMBOL EXPLANATION
Important safety information, refer to the
operating manual.
Dangerous voltage may be present.
Earth ground.
Double insulation (Protection class 1000V
CAT II 600V CAT III).
SAFETY PRECAUTIONS
Follow all safety and operating instructions to
ensure maximum personal safety during the
operation and to ensure the meter is used safely
and is kept in good operating condition.
●
●
●
Read the operating instructions thoroughly
and completely before operating your meter.
Pay attention to WARNINGS, which will
inform you of potentially dangerous proce-
dures. The instructions in these warnings
must be followed.
Always inspect your meter and test leads for
−2 −
●
●
●
●
●
any sign of damage or abnormality before
every use. If any abnormal conditions exist
(i.e. broken test leads, cracked cases,
display not reading, etc.), do not attempt to
take any measurements.
Do not expose the instrument to direct
sunlight, extreme temperature or moisture.
Never ground yourself when taking electrical
measurements. Keep your body isolated
from ground by using dry clothing, rubber
shoes,
rubber mat or any approved
insulating material.
Always be
careful when working with
voltages above 60V dc or 30V ac rms. Keep
fingers behind the probe barriers while
measuring.
To avoid damages to the instrument, do not
exceed the maximum limits of the input
values shown in the technical specification
tables.
Never use the meter to measure voltages
that might exceed the maximum allowable
input value of any function.
−3 −

MAINTENANCE
●
●
●
●
●
Never touch exposed wiring, connections or
any
live circuit when attempting to take
measurements.
Before opening the case, always disconnect
test leads from all energized circuits.
Never use the meter unless the back cover
is in place and securely fastened.
Do not use abrasive
s or solvents on the
meter. Clean using a damp cloth and mild
detergent only.
Only
Qualified and trained service
technicians should perform calibration and
repair of the meter.
GENERAL DESCRIPTION
The meter is a battery operated autorange
professional clamp meter with 3999 counts. For
measuring DC and AC voltage, DC and AC current,
Resistance, Frequency, Frequency for the clamp,
Diode, and Continuity Test.
The meter has AC measurement with RMS or
TRUE RMS.
−4 −
In addition, there is a radius lamp near the clamp,
It is lit along with measuring current.
PANEL DESCRIPTION
1.
2.
3.
Transformer jaws
Pick up DC or AC current flowing through
the conductor.
Rotary switch
Rotary switch is used to select functions.
HOLD button
When this button is pushed, the display will
keep the last reading and “ ”symbol will
appear on the LCD. Pushing it again
returns the meter to normal mode.
4.
MAX/MIN button
Press the button to enter the MAX/MIN
Recording Hold mode. The maximum,
minimum values are then reset to the
present input. The readings are stored in
memory. “ MAX ”or “ MIN ”annunciator
turns on to indicate what value is being
displayed. Hold this button for more than 3
seconds to return to the normal operating
mode.
−5 −

5.
6.
7.
8.
LCD display
“ V
Ω
Hz” jack
This is the positive input terminal for volt,
resistance, frequency, diode and Continuity
test. Connection is made to it using the red
test lead.
“COM” jack
This is the negative (ground) input terminal
for all measurements except current.
Connection is made to it using the black
test lead.
ZERO button
Push the button to get relative measure-
ment mode, “REL” annunciate display on
LCD. But store the displayed reading as a
reference value.
−6 −
In the Relative mode, the value shown on
the LCD is always the difference between
the stored reference value and the present
reading. If the new reading is the same as
the reference value, the display will be zero.
9.
10.
11.
FUNC. button
In
Ω
range, press this button to select
Ω
or or function. Different symbols of
function will appear on the LCD.
button
Press the button to turn the backlight on.
After about 8 seconds, the backlight is
auto
-off. To turn the backlight on again, just
press it
once more.
When measuring current, press the button
&
the radius lamp near the clamp is also lit.
Rigger
Press the lever to open the transformer.
When the lever is released, the jaws will
close again.
−7 −

FORWARD LAYOUT
−8 −
OPERATING INSTRUCTIONS
DC VOLTAGE MEASUREMENT
1.
Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
2. Set rotary switch at desired V position.
Connect the test lead tips in parallel with the
c
ircuit to be measured. Be careful not to
touch any electrical conductors.
3.
4.
The polarity of the red lead connection will
be indicated along with the voltage value.
Read the measure result from the display.
AC VOLTAGE MEASUREMENT
1. Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
2. Set rotary switch at desired V~ position.
Connect the test lead tips in parallel with the
circuit to be measured. Be careful not to
touch any electrical conductors.
3. Read the measure result from the display.
−9 −

DC CURRENT MEASUREMENT
1.
2.
3.
4.
Set the rotary switch at A position.
Press ZERO button to enter the zero mode.
Press the trigger to open transformer jaw
and to clamp one conductor only, making
sure that the jaw is firmly closed around the
conductor.
Read the measure result from the display.
NOTE:
1. Make certain that all test leads are discon-
nected from the meter terminals.
2. Open and close the clamp jaw several times
to demagnetize the clamp jaw before taking
any DC current measurement.
3. Avoid using the backlight when reading the
measure result from the display.
AC CURRENT MEASUREMENT
1.
2.
3.
4.
Set the rotary switch at desiredA~ position.
Press ZERO button to enter the zero mode.
Press the trigger to open transformer jaw
and to clamp one conductor only, making
sure that the jaw is firmly closed around the
conductor.
Read the measure result from the display.
−10 −
NOTE:
1. Make certain that all test leads are discon-
nected from the meter terminals.
2. Open and close the clamp jaw several times
to demagnetize the clamp jaw before taking
any DC current measurement.
RESISTANCE MEASUREMENT
1.
Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
2.
3.
4.
Set rotary switch at desired
Ω
position.
Push FUNC. button to select Ω.
Connect the test lead tips in parallel with the
resistance in the circuit being measured.
5. Read the measure result from the display.
NOTE:
1.
If the resistance being measured exceeds
the maximum value of the range or the input
is not connected, an overrange indication
“OL” will be display.
2. When checking in-circuit resistance, be sure
−11 −

the circuit under test has all power removed
and that all capacitors have been discharged
fully.
CONTINUITY TESTING
1.
2.
3.
4.
Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
Set rotary switch at desired
Ω
position.
Push FUNC. button to select .
Connect the test lead tips in parallel with the
resistance in the circuit being measured. If
continuity exists (i.e., resistance less than
40
Ω
) built – in buzzer will sound.
DIODE TESTING
1.
2.
3.
4.
Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
Set rotary switch at desired
Ω
position.
Push FUNC. button to select . The red
lead should be connected to the anode and
the black lead to the cathode of the diode.
The typical voltage drop should be about
0.6V for silicon diode or 0.3V for germanium
diode. If the diode is reverse biased or there
is an open circuit the reading displayed will
be “OL”.
−12 −
FREQUENCY MEASUREMENT
1.
2.
3.
Insert the black and red test leads into the
COM and V
Ω
Hz input terminals respectively.
Set the rotary switch to Hz position.
Connect the test leads across the source or
load under measurement. The polarity of the
red lead connection is positive “+”.
4.
Read the measure result from the display.
NOTE:
1.
2.
The signal amplitude must also be greater
than the sensitivity level.
Determine that the amplitude level of the
signal to be measured is not greater than the
input voltage limit (250V DC/AC rms.).
MEASURING FREQUENCY FOR CLAMP
1.
2.
3.
Set the rotary switch to position.
Press the trigger to open transformer jaw
and to clamp one conductor only, making
sure that the jaw is firmly closed around the
conductor.
Read the measure result of frequency of AC
current flowing through the transformer jaw
from the display.
−13 −

NOTE:
Frequency range: 40Hz to 400Hz ( > 20A ).
SPECIFICATIONS
Accuracy:
±% of reading ±number of least significant digits at
18℃to 28℃, with relative humidity up to 75%.
All specifications assume less than 1 year since
calibration. Temperature coefficient:
0.1×specified accuracy/ ℃。
GENERAL
Maximum voltage: 1000V CAT II 600V CAT III
Altitude: 2000m
Display: LCD 3999 counts
Updates 2-3/sec
Ranging method: Auto range mode
Polarity indication: “−” display for negative
polarity
Overrange indication: LCD will display “OL”
Low battery: “ ” will appears on LCD
Jaw capability:
Power:
Size:
40mm,Max conductor size
Battery1.5V×3Size AAA
225mm×86mm×32mm
−14 −
Weight: Approx. 330g
Operating: 5
℃
to 35
℃
Storage temperature: −10
℃
to 50
℃
DC VOLTAGE
Range Resolution
Accuracy
4V
1mV
±（0.8%of rdg +5 digits）
40V
10mV
400V 0.1V
600V 1V ±（1.0%of rdg +2 digits）
1000V
1V
Input Impedance: 10MΩ
Overload Protection: 1000V DC or 700V AC RMS
AC VOLTAGE
Range Resolution Accuracy
4V 1mV
40V
10mV
400V
0.1V
±
（
1.2%of rdg +5 digits
）
600V 1V
700V
1V
Input Impedance: 10MΩ
Frequency range: 40Hz to 400Hz
Overload Protection: 1000V DC or 700V AC RMS
−15 −

DC CURRENT
Range Resolution Accuracy
400A
0.1A
±（3.0%of rdg +5 digits）
600A
1A
1000A 1A ±（3.0%of rdg +5 digits）
Overload Protection:
120% ranges for 60 seconds max
AC CURRENT
Range
Resolution
Accuracy
400A
0.1A
±（2.5%of rdg +5 digits）
600A 1A
1000A 1A ±（3.0%of rdg +5 digits）
Frequency range: 50Hz to 60Hz
Overload Protection:
120% ranges for 60 seconds max
RESISTANCE
Range
Resolution
Accuracy
400Ω0.1Ω
±（1.0%of rdg +5 digits）
4k
Ω
1
Ω
40k
Ω
10
Ω
400k
Ω
0.1k
Ω
4MΩ1kΩ
40MΩ10kΩ±
（
2.0%of rdg +5 digits
）
−16 −
Overload Protection:
250V dc or rms, ac for all ranges
FREQUENCY
Range Resolution Accuracy
40Hz
1Hz
±（0.1%of rdg +1digit）
400Hz
1Hz
4kHz 10Hz
40kHz 100Hz
100kHz
100Hz
Measurement range:
1V to 10V rms, 40Hz to 100kHz
FREQUENCY MEASUREMENT FOR CLAMP
Range Resolution Accuracy
40Hz 0.01Hz ±（0.1% of rdg +1digit）
400Hz
0.1Hz
AUDIBLE CONTINUITY AND DIODE
Range Description
If continuity exists (about less than
40
Ω
), built-in buzzer will sound.
Show the approx. forward voltage of
the diode.
−17 −

AUTO POWER OFF
To extend the battery life, Auto Power Off function
is provided. If no key operations of range changing
occurs in about 30 minutes, the meter will be
turned off automatically. To turn it on, push the
FUNC. Button only.
REPLACING THE BATTERY
WARNING
To avoid electrical shock or personal
injury, remove the test leads and any
input signals before replacing the
battery. Replace only with same type
of battery.
When the electrical tester displays the “ ” mark,
the backlight will not be very lit, the battery must
be replaced to maintain proper operation. Use the
following procedure to replacing the battery:
1.
2.
The Rotary Switch is used to select OFF.
Disconnect test leads from any live source
−18 −
3.
4.
5.
and remove the test leads from the input
terminals.
Remove screws on the battery cover and
open the cover.
Remove the exhausted battery and replace
with three new 1.5V size AAA batteries.
Place battery cover and secure by a screw.
CAUTION
Using this appliance in an environment
with a strong radiated radio-frequency
electromagnetic field (approximately
3V/m) may influence its measuring
accuracy.
ACCESSORIES
•Operator’s instruction manual
•Set of test leads
•Battery 1.5V×3Size AAA
−19 −

OPERATOR’S 57262
INSTRUCTION MANUAL
ACA/DCA CLAMP METER