multicomp pro MP700110 User manual

200k
750V
1000V
1000
100
10
HOLD
TEST
DIGITAL EARTH RESISTANCE TESTER
MP700110

2
Electronic Digital Earth Resistance Tester is direct
replacement of the conventional hand generator type tester.
It is designed for measurement of the resistance of earthing
used in the electrical equipment as well as for measurement
of ground resistivity. It can be used for measurements of the
other low regular and liquid resistances. It can also be used
for measurement of voltage AC, voltage DC and resistance.
This instrument finds wide application for testing earthing
installation in power based industries, telecommunication
networks and electrical traction systems etc.
I. SAFETY INFORMATION
Read the following safety information carefully before
attempting to operate or service the meter.
To avoid damages to the instrument do not apply the
signals which exceed the maximum limits shown in the
technical specifications tables.
Do not use the meter or test leads if they look damaged.
Use extreme caution when working around bare
conductors or bus bars.
Accidental contact with the conductor could result in
electric shock.
Use the meter only as specified in this manual;
otherwise, the protection provided by the meter may be
impaired.
Read the operating instructions before use and follow all
safety Information.

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Caution when working with voltages above 60V DC or
30V AC RMS. Such voltages pose a shock hazard.
Before taking resistance measurements or testing
acoustic continuity, disconnect circuit from main power
supply and all loads from the circuit.

Safety symbols:
Caution refer to this manual before using the meter.
Dangerous voltages.
Meter is protected throughout by double insulation or
reinforced insulation.
When servicing, use only specified replacement parts.
CE Complies with EN-61010-1
II
．
FEATURES
Earth resistance range: 20Ω, 200Ω, 2000Ω
Display: Large LCD with dual display
Multimeter function Range: 200kΩ, 750VAC, 1000VDC.
Sampling Rate: 2.5 times per second.
Zero Adjustment: Automatic adjustment.
Over Range Indicator: Number 1 of highest digit is
displayed.
Low Battery Indication: The is displayed when the
battery Voltage drop below the operating voltage.

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Auto Power Off:
To conserve battery life, the meter will automatically turn off
after approx. 15 minutes of non-use. To turn the meter back
on, turn the rotary switch to OFF, then to the desired function.
Operating Temperature: 0ºC to 40ºC (32ºF to 104ºF)
and Humidity below 80% RH
Storage Temperature: -10ºC to 60ºC (14ºF to 140ºF)
and Humidity below 70% RH
Power source: 6x1.5V Size “AA” battery or Equivalent
(DC9V)
Dimensions: 200(L) x 92(W) x 50(H) mm
Weight: Approx 700g include battery
Accessories: 4 sets Test kits, 4pcs iron rods, 6pcs battery,
Carrying case, manual.
IV. Electrical Specifications
Accuracies are specified in the way:
±(…% of reading +…digits) at 23ºC±5ºC,below 80% RH.
Earth resistance
Range
Resolution
Accuracy
20Ω
0.01Ω
+(2%+10d)
200Ω
0.1Ω
+(2%+3d)
2000Ω
1Ω
+(2%+3d)
Earth voltage
Range
Resolution
Accuracy
200V
0.1V
+(3%+3d)

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OHMS
Range Resolution Accuracy
Overload
Protection
200kΩ
0.1kΩ
+(1%+2d)
250Vrms
DC Voltage
Range
Resolution
Accuracy
Input
Impedance
Overload
Protection
1000V
1V
+(0.8%+3d)
10MΩ
1000Vrms
AC Voltage (40Hz~400Hz)
Range
Resolution
Accuracy
Input
Impedance
Overload
Protection
750V
1V
+(1.2%+10d)
10MΩ
750Vrms
V. PARTS & CONTROLS
①Digital Display
②Data Hold Button
③ADJ (ZERO) Turncap
④Backlight Button
⑤Test Button
⑥Rotary Function switch
⑦V Ω C Jack
⑧P Jack
⑨COM E jack
⑩Pothook
⑪12, Battery Cover

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Button Function Operation
Hold Function
The hold function freezes the reading in the display. Press
the HOLD key momentarily to activate or to exit the hold
function
Backlight
Press the key for to turn on the display backlight function.
The backlight will automatically turn off after 15 seconds.
3
4
AA
+
+
AA
+
AA
AA
+
+
AA
+
AA
200k
750V
1000V
1000
100
10
9
HOL D
TEST

7
VI. Measurement of effective resistance of earth
electrodes
BEFORE PROCEEDING MEASUREMENT, READ SAFETY
NOTES ON PAGE 1.
1. During operation if the symbol appears on the
display, replace the batteries.
2. Short the tips of the leads and press the “TEST”
button. Adjust the 0 Ω “ADJ” turncap control to set the
reading of zero.
3. Rotate to function switch to “EARTH WOLTAGE”
position and press to test. Earth voltage will displayed
on the LCD. When earth voltage is more than 10V, it
may result in errors in earth resistance measurement.
Accurate earth resistance measurement may not be
made.
4. Precision earth resistance measurement method :
(1) Connect green, yellow and red test leads to
instrument terminals E, P and C with auxiliary
earth spikes P1, C1 stuck into the earth “IN A
STRAIGHT LINE “. (Fig.1)
(2) Rotate the function switch to suitable range
then press the pushbutton to test and take the
reading.

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5. Simplified earth resistance measurement method :
(1) This method is recommended where an earth
resistance higher than 10 is measured or
where it is not possible to drive auxiliary earth
spikes. An approximate value of earth
resistance can be obtained by the two wire
system where is shown in Fig. 2.
(2) Rotate the function switch to “EARTH
VOLTAGE” position and press to test. Make
certain that earth voltage is less than 10V.
(3) First rotate the function switch to “200 ”
position and press to test, read earth
resistance. If the display shows “1”(MSD),
switch to “2000 ” position and read earth
resistance.
(4) The reading obtained (Rx) is an approximate
earth resistance value. There is no need for
external shorting as P and C terminals are
shorted by using the test leads specified for the
Simplified measurement.

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(5) Rx = Re – re
Rx = True Earth Resistance
Re = Indicated Value re = Earth Resistance
of Earth Electrode
(6) Since measuring current is as low as 2 mA, the
earth leakage breaker (ELCB) does not trip
even if the earth side of the commercial power
supply with an ELCB is used.
* Follow the proper connection such as Fig1.
VII. DC/AC VOLTAGE MEASUREMENTS
1, Set the function switch to the highest 1000V DC ( ) or
750VAV (~) position.
2, Insert the black test lead banana plug into the negative
COM jack.
3, Insert the red test lead banana plug into the positive V jack.
4,Touch the black test probe tip to the negative side of the
circuit.
5,Touch the red test probe tip to the positive side of the
circuit.

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6,Read the voltage in the display.
DC/AC VOLTAGE MEASUREMENTS: If the polarity is
reversed, the display will show (-) minus before the value
VIII. 200k
 RESISTANCE MEASUREMENTS
1, Set the function switch to the highest 200k

position.
2, Insert the black test lead banana plug into the negative
COM jack
3, Insert the red test lead banana plug into the positive

jack.
4, Touch the test probe tips across the circuit or part under
test. It is best to disconnect one side of the part under test so
the rest of the circuit will not interfere with the resistance
reading.
5, Read the resistance in the display
X. Battery Replacement
1,When the low battery symbol appears
on the LCD, the six 1.5V ‘AA’ batteries must
be replaced.
2, Turn the meter off and remove the test
leads.
3, Unclip the tilt stand from the rear of the
meter.
4, Remove the four Phillips head screws
holding the battery cover.
5, Remove the battery compartment cover.
6, Replace the batteries observing polarity.
7, Affix the rear cover and secure the screws.
8, Reattach the tilt stand.

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INFORMATION ON WASTE DISPOSAL FOR
CONSUMERS OF ELECTRICAL & ELECTRONIC
EQUIPMENT.
When this product has reached the end of its life it must be
treated as Waste Electrical & Electronics Equipment
(WEEE). Any WEEE marked products must not be mixed
with general household waste, but kept separate for the
treatment, recovery and recycling of the materials used.
Contact your local authority for details of recycling schemes
in your area.
Made in China
LS12 2QQ