multicomp pro MP730988 User Manual

MP730988
Digital Multimeter User Manual
I. Overview
MP730988 is a 9999-count true RMS digital multimeter with high resolution, auto
range and new intelligent ADC chip. Designed according to CAT II 1000V/CAT Ill
600V, the meter comes with overvoltage and overcurrent alarms, and a false
detection protector for 6KV electric shock and high voltages.
II. Features
• Unique appearance, ergonomic design, compact structure.
• 9999-count display, true RMS measurement, and fast ADC (3 times/s).
• Full-featured false detection protection for up to 1 000V surge, and overvoltage/
overcurrent alarm.
• Extended measuring range, especially for capacitance (compared with similar
products), the ,s;9.999mF response time is within 6s.
• Optimized NCV function: EFHi mode to distinguish neutral and live wires, EFLo
mode for low electric fields, and audio/visual alarm.
• Recoverable and anti-burning protector is built into the current input terminal.
• Measurement of flame sensor of heating device can be performed at uA position.
• Current (AC/DC) mode memory function.
• Low power consumption (general: about 2mA; sleep state: < 30µA ) to effectively
extend the battery life to 500 hours.
III. Accessories
Open the package box and take out the meter. Please double check whether the
following items are missing or damaged.
1. User manual----------- 1 pc
2. Test lead
3. Temperature prob
If any of the above is missing or damaged, please contact your supplier immediately.
& Read the "Safety Instruction" carefully before use.
IV. Safety Instruction
1. Safety Standards
1) The meter is designed according to BS EN61010-1 :201 0+A1 :2019; BS EN
61010-2-030:2010 ; BS EN 61010-2-033:2012 and BS EN 61326-1:2013;
EN 61326-2-2:2013.
2) The meter conforms to CAT II, CAT 11 1 000V, double insulation, CAT II 1 000V/
CAT Ill 600V overvoltage standard, and pollution degree 2.
2. Safety Information
1) Do not use the meter if the rear casing and battery cover is not fitted
properly, or it may pose a shock hazard.
2) Check and make sure the insulation of the meter and test leads is in good
condition without any damage before use. If the insulation of the meter casing is
found to be significantly damaged, or if the meter is considered to be malfunctioning,
please do not continue to use the meter.
3) Keep fingers behind the finger guards of the test leads when using the meter.
4) Do not apply more than 1000V between any terminal and earth ground to prevent
electric shock and damage to the meter.
5) Use caution when working with voltages above AC 30Vrms or DC 60V. Such
voltages pose a shock hazard.
6) The measured signal is not allowed to exceed the specified limit to prevent
electric shock and damage to the meter.
7) Place the function dial in the correct position before measurement.
8) Never turn the function dial during measurement to avoid damage to the meter.
9) Do not change the internal circuit of the meter to avoid damage to the meter or user.
10) Damaged fuses must be replaced with fast-acting ones of same
specifications.
11) When"�" is displayed, please replace the batteries in time to
ensure measurement accuracy.
12) Do not use or store the meter in high temperature, high humidity,
flammable, explosive, or strong magnetic field environments.
13) Clean the meter casing with a damp cloth and mild detergent. Do not
use abrasives or solvents.
14) Use of test probe
For CAT Ill /CAT IV test, please ensure probe cover is installed in place to avoid
electric shock.
=IIIIC(
For CAT II test, remove the probe cover to test recessed sockets such as wall
socket, and do not lose the probe cover.
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V. Electrical Symbols
-
£. ,...,
Caution
...
-½
Grounding
.&.
[gJ Double insulated
CE
Conform to EU directive
, (@ .
Conform to UL STD 61010-1, 61010-2-030, 61010-2-033,
, _ ,
certified by CSA STD C22.2 No. 61010-1, 61010-2-030, 61010-2-033
Measurement category Ill is applicable to test and measure circuits
CATHI
connected to the distribution part of the building's low-voltage MAINS
installation.
Measurement category II is applicable to test and measure circuits
connected directly to utilization points (socket outlets and similar points)
CATII
of the low-voltaqe MAINS installation.
United Kingdom conformity assessment.
UKCA
VI. General Specifications
1. The maximum voltage between input terminal and earth ground is 1000Vrms.
2. 1 DA terminal is equipped with 10A 1 000V quick-acting fuse, Cl>6.35x32mm
3. 9999-count display, show "OL" when overrange, update 3 times per second.
4. Range: Auto
5. Backlight: manually turn on and auto turn off after 30 seconds.
6. Polarity: Display symbol "-" for negative polarity input.
7. Data hold: "l:J" display on top right of LCD.
8. Low battery indication: "� " display on bottom left of LCD.
9. Battery: AAA battery 1.5Vx3
° ° °
10. Working temperature: 0 C- 40 C (32 F- 104
Storage temperature: -10 ° ° °
C- 50 C (14 F- 122
°
° C - 30 ° C ,s;75%, 30 C - 40
Relative humidity: 0
Working altitude: 0 - 2000m
Instruction for use: Indoor use
11. Dimension: 187*88*56mm
12. Weight: about 400g (including batteries)
13. EMC: For RF-field at 1V/m, overall accuracy= specified accuracy + 5% of the
range. There is no specified indicator for RF-field at >1V/m.
VII. External Structure (Figure 1)
1. LCD Display
2. Function buttons
3. Dial switch
4. mA /1 DA input terminal
5. uA input terminal
6. COM input terminal
7. Other terminals
a. Hook
9. Probe holder
10. Bracket
1 pair
1 pc
CE:
Alternating current
Direct Current
Warning
°
F)
°
F)
°
C ,s;50%
Figure 1
VIII. Function buttons
• SELECT Button: Press this button to switch between DCV, continuity/resistance
/diode/capacitance, frequency/duty cycle, °Cff and AC/DC current.
Each time you press it, the corresponding measuring range will be switched
alternately.
• RANGE Button: When the dial switch is in position of V, mV, resistance, mA or A,
short press this button to switch to manual range and long press to enter AUTO
mode.
• REL Button: When the dial switch is in position of V, mV, capacitance, µ A, mA
or A, short press this button to enter relative value measurement mode.
• lll:lEEIButton: Press this button to perform/cancel data hold; press this button
for �2s to turn on/off the backlight.
• SELi{For UT60BT only): Long press this button to enter wireless mode,
shows on bottom left of LCD, long press again to exit this mode.
IX. Operating Instructions
1. AC/DC Voltage Measurement (Figure 2)
1) Turn the function dial to the AC/DC voltage position.
2) Insert the red test lead into the "VO" terminal, black test lead into the "COM"
terminal, and make the probes in contact with both ends of the measured voltage
(parallel connection to the load.
3) Read the test result from LCD.
& Warning
• Do not input a voltage over 1 000V, or it may damage the meter and hurt the user.
• If the range of the measured voltage is unknown, select the maximum range and
then accordingly reduce (if the LCD displays "OL", it indicates that the voltage is
over range).
• The input impedance of the meter is 1 OM 0. This load effect may cause measurement
errors in high-impedance circuits. If the impedance of the circuit is ,s; 10kO, the
error can be ignored (,s;o.1 %).
• Be cautious to avoid electric shock when measuring high voltages.
• Before each use, verify meter operation by measuring a known voltage.
2. Continuity Test (Figure 2)
1) Turn the function dial to the continuity test
position.
2) Insert the red test lead into the "VO" terminal,
black test lead into the "COM" terminal, and
make the probes in contact with the two test
points.
3) When measured resistance>420O, the circuit
is broken, LCD shows "OL" and the buzzer
makes no sound.
When measured resistance is at 300 - 4200,
the circuit conductance value is relatively large,
the buzzer makes no sound along with a red LED indication. When measured
resistance :S:30O, the circuit is in good conduction status and the buzzer beeps
continuously along with a green LED indication.
& warning
• Switch off the power supply of the circuit and discharge all capacitors before test.
3. Resistance Measurement (Figure 2)
1) Turn the function dial to the resistance measurement position.
2) Insert the red test lead into the "VO" terminal, black test lead into the "COM"
terminal, and make the probes in contact with both ends of the measured resistance
(parallel connection to the resistance).
3) Read the test result from LCD.
&warning
• Before measuring resistance, Switch off the power supply of the circuit and
discharge all capacitors before measuring resistance.
• If the resistance is not less than 0.50 when the test leads are shorted, please
check if the test leads are loose or abnormal.
• If the measured resistor is open or the resistance exceeds the maximum range,
the LCD will display "OL".
• When measuring low resistance, the test leads will produce 0.10-0.20 measurement
error. To obtain the final accurate value, the resistance of shorted test leads should
be subtracted from the measured resistance value.
• When measuring high resistance, it is normal to take a few seconds to stabilize
the reading.
• Do not input voltages over 60 VDC or 30 VAC .
4. Diode Test (Figure 2)
1) Turn the function dial to the diode test position.
2) Insert the red test lead into the "VO+I-" terminal, black test lead into the "COM"
terminal, and make the probes in contact with the two endpoints of the PN junction.
3) If the diode is open or its polarity is reversed, the LCD will display "OL". For silicon
PN junction, the normal value is generally about 500mV-800mV (0.5V-0.8 V).
&warning:
• Switch off the power supply of the circuit and discharge all capacitors before
testing the PN junction.
• The test voltage is about 4.0V/1.5mA.
5. Capacitance Measurement (Figure 2)
1) Turn the function dial to the capacitance measurement position.
2) Insert the red test lead into the "VO" terminal, black test lead into the "COM"
3) When there is no input, the meter displays a fixed value (intrinsic capacitance).
For small capacitance measurement, this fixed value must be subtracted from
the measured value to ensure measurement accuracy. So, please use the relative
value measurement (REL) mode to automatically subtract the fixed value.
& warning
• If the measured capacitor is shorted or the capacitance exceeds the maximum
range, the LCD will display "OL".
• When measuring high capacitance, it is normal to take a few seconds to stabilize
the reading.
• Before measuring, discharge all capacitors (especially high-voltage capacitors)
to avoid damage to the meter and user.
6. Frequency Measurement (Figure 2)
1) Turn the function dial to the "Hz/%" position.
2) Insert the red test lead into the "VOHz" terminal, black test lead into the "COM"
terminal, and connect the test leads to both ends of the signal source in parallel
(measuring range: 10Hz-2MHz).
3) Read the test result from LCD.
& Warning
• The output signal of the measurement should be < 30V, otherwise the
measurement accuracy will be affected.
7. Duty Cycle Measurement (Figure 2)
1) Turn the function dial to Hz/% position, short press SELECT to enter duty cycle
measurement interface.
2) Insert the red test lead into the "VOHz" terminal, black test lead into the "COM"
terminal, and connect the test leads to both ends of the signal source in parallel
(measuring range is S10Hz).
3) Read the test result from LCD.
&Warning
• The output signal of the measurement should be >1Vp-p, otherwise the
measurement accuracy will be affected.
i
Figure 2