MASTECH MS8360C Digital Multimeter User Manual

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DIGITAL MUTIMETER
USER MANUAL
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CONTENTS
1. GENERAL INSTRUCTIONS...............e.—e—eanaaanaananana 1
1.1 Precaution safety measures...............e.er.eseeneno. 1
1.1.1 Preliminary... eee 1
1.1.2 During USEe ...................e.eeeeereererenene eones 2
1.1.3 Symbols ...................... eee eeneeeereneee enero EE RR REEG 4
1.1.4 Instructions................e eerie ranean 4
1.2 Protection mechanisms... 5
2. DESCRIPTION -............— ene enannannnanananaaano naaa 5
2.1 Instrument Familiarization .................................. 5
2.2LCDDISPlaY .....coooeeeeeeee eee cnrs 7
2.3 Keypad eee ere r rar rn aan anna 9
2.4 Terminals o.oo eee eee R RER 9
2.5 ACCceSSONE SER RAR RR nanas 10
3. FUNCTION DESCRIPTION rn 10
3.1 General FUNCIONS coven e 10
3.1.1 DATA HOLD MOORE 10
3.1.2 Battery SAVET esse DEA 10
3.1.3 Non-Contact AC
Voltage detection EHE 10
3.2 Measurement Functions ………….……..….…….…..….….….……. 11
3.2.1 AC and DC
Voltage measurement .…..…......….....…......….….….….…ersenre 11
3.2.2 Resistance measurement …….…................…..…..…… 12
3.2.3 Diode Test..…..….............…...…...…........srsessere ra encre use 13
MAS TECHoe
CONTENTS
3.2.4 Continuity Check .…..................scscscscsess 14
3.2.5 Capacitance measurement ..…….….........…......…. 15
3.2.6 Transistor measurement .……........…..…...…..….….….…………. 16
3.2.7 Frequency measurement …….….….....…...….…...…....…. 16
3.2.8 Temperature measurement... 17
3.2.9 Current measurement are 17
4. TECHNICAL SPECIFICATIONS.......…..…......….….….. 19
4.1 General specifications neneee ee e 19
4.2 Measurement specifications.....................———.. 20
4.2.1 DC Voltage ...............e....e..eseriecercineneener een ee 20
4.2.2 AC Voltage ......................rencencereereenereeree eee. 20
4.2.3 Frequency .........................e2e0e0ieiereree AAA 21
4.2.4 Resistance .....................evcervrercevececerccenee eee. 21
4.2.5 Diode ....................esrescereccenceneereereene reee 21
4.2.6 Audible continuity....................._....——. e... 22
4.2.7 Transistor .................e.e.e.reserevrrereneenenenereeee ee 22
4.2.8 Temperature....................eereverieriecerrrer en, 22
4.2.9 Capacitance .............e..e-eeesiecerreriecerrereoseneene—_. 23
4.2.10 DC Current -...............-e.=er00000rareeenenon ea eee 23
4.2.11 AC Current ..............e.e.esesviviciierene0 a e IZ: 23
5. MAINTENANCE ...........eeeaenmumaneanananaanananeananem. 24
5.1 General Maintenance... 24
5.2 Battery replacement......................... reee... 25
MAS TECH,
1. GENERAL INSTRUCTIONS
This instrument complies with IEC 61010-1, CAT. II1 600V
overvoltage standards. See Specifications.
To get the best service from this instrument, read carefully
this user's manual and respect the detailed safety
precautions.
International symbols used on the Meter and in this manual
are explained in chapter 1.1.3
1.1 Precautions Safety Measures
1.1.1 Preliminary
* Measurement category IV meters are designed to protect
against transients from the primary supply level
(overhead or underground utility service).
* Measurement category lll is for measurements performed
in the building installation.
NOTE: 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 the fixed installation.
* Measurement category || 15 for measurements
performed on circuits directly connected to the low
voltage installation.
NOTE: Examples are measurements on household
appliances, portable tools and similar equipment.
* Measurement category | is for measurements
performed on circuits not directly connected to MAINS.
NOTE: Examples are measurements on circuits not
derived from MAINS, and specially protected (internal)
MAS TECH,
MAINS derived circuits. In the latter case, transient
stresses are variable; for that reason, requires that the
transient withstand capability of the equipment is made
known to the user.
* When using this Multimeter, the user must observe all
normal safety rules concerning:
— protection against the dangers of electric current.
— protection of the Multimeter against misuse.
* For your own safety, only use the test probes supplied
with the instrument. Before use, check that they are
in good condition.
1.1.2 During use
* If the meter is used near noise generating equipment,
be aware that display may become unstable or indicate
large errors.
* Do not use the meter or test leads if they look damaged.
* Use the meter only as specified in this manual;
otherwise, the protection provided by the meter may
be impaired.
* Use extreme caution when working around bare
conductors or bus bars.
* Do not operate the meter around explosive gas, vapor,
or dust.
* Verify a Meter's operation by measuring a known
voltage. Do not use the Meter if it operates abnormally.
Protection may be impaired. When in doubt, have the
Meter serviced.
* Uses the proper terminals, function, and range for
your measurements.
* When the range of the value to be measured is
unknown, check that the range initially set on the
multimeter is the highest possible or, wherever
possible, choose the autoranging mode.
MAS TECH,
*To avoid damages to the instrument, do not exceed
the maximum limits of the input values shown in the
technical specification tables.
*When the multimeter is linked to measurement circuits,
do not touch unused terminals.
*Caution when working with voltages above 60Vdc or
30Vac rms. Such voltages pose a shock hazard.
*When using the probes, keep your fingers behind the
finger guards.
*When making connections, connect the common test
lead before connecting the live test lead; when
disconnecting, disconnect the live test lead before
disconnecting the common test lead.
*Before changing functions, disconnect the test leads
from the circuit under test.
*For all dc functions, including manual or auto-ranging,
to avoid the risk of shock due to possible improper
reading, verify the presence of any ac voltages by first
using the ac function. Then select a dc voltage range
equal to or greater than the ac range.
*Disconnect circuits power and discharge all
high-voltage capacitors before testing resistance,
continuity, diodes, or capacitance.
*Never perform resistance or continuity measurements
on live circuits.
*Before measuring current, check the meter's fuse
and turn off power to the circuit before connecting the
meter to the circuit.
*In TV repair work, or when carrying out measurements
on power switching circuits, remember that high
amplitude voltage pulses at the test points can damage
the multimeter. Use of a TV filter will attenuate any
such pulses.
03
MASTECHo
*Use the 9V NEDA battery, properly installed in the
Meter's battery case, to power the Meter.
*Replace the battery as soon as the battery indicator
(E43) appears. With a low battery, the Meter might
produce false readings that can lead to electric shock
and personal injury.
*Do not measure voltages above 600V in Category lll
installations.
*Do not operate the Meter with the case
(or part of the case) removed.
1.1.3 Symbols:
Symbols used in this manual and on the instrument:
Caution: refer to the instruction manual.
A Incorrect use may result in damage to the
device or its components.
~ AC (Alternating Current)
DC (Direct Current)
= Earth ground
E] Double insulated
=> Fuse
CE Conforms to European Union directives
1.1.4 Instructions
* Remove test leads from the Meter before opening the Meter
case or battery cover.
* When servicing the Meter, use only specified replacement
parts.
* Before opening up the instrument, always disconnect from
all sources of electric current and make sure you are not
charged with static electricity, which may destroy internal
components.
04
MAS TECH,
* Any adjustment, maintenance or repair work carried out
on the meter while it is live should be carried out only by
appropriately qualified personnel, after having taken into
account the instructions in this present manual.
* A “qualified person” is someone who is familiar with the
installation, construction and operation of the equipment
and the hazards involved. He is trained and authorized to
energize and de-energize circuits and equipment in
accordance with established practices.
* When the instrument is opened up, remember that some
internal capacitors can retain a dangerous potential even
after the instrument is switched off.
*If any faults or abnormalities are observed, take the
instrument out of service and ensure that it cannot be used
until it has been checked out.
*If the meter is not going to be used for a long time, take out
the battery and do not store the meter in high temperature
or high humidity environment.
1.2 Protection mechanisms
* Fused by the fuse (FF400mA/1000V) during capacitance,
temperature,mA and hFE measurements.
* APTC resistor protects against permanent over voltages
of up to 250V during resistance, continuity
and diode test measurements.
2. DESCRIPTION
2.1 Instrument Familiarization
MAS TECH,
FRONT PANEL
DIGITAL MULTIMETER 2
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every 15 min.
1.Voltage alert area 3.LCD display 5.Rotary switch
2.Voltage alert light 4.Keypad 6.Terminals
MAS TECH,
2.2 LCD Display
See Table 1 indicated for information about the LCD
display.
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Figure 1.Display
Table 1. Display Symbols
Symbol Meaning
The battery is low.
Á Warning: To avoid false readings,
which could lead to possible electric
== shock or personal injury, replace the
battery as soon as the battery indicator
appears.
= Indicates negative readings.
Indicator for ac voltage or current.
AC voltage and current are displayed as
AC the average of the absolute value of the
input, calibrated to indicate the
equivalent rms value of a sine wave.
Indicator for dc voltage or current.
The Meter is in the Diode Test mode
Y [15
07
MAS TECH,
Table 1. Display Symbols (continued)
01) The Meter is in the Continuity Check mode.
H The Meter is in the Data Hold mode.
°C/°F °C: |Celsius scale. The unit of temperature.
°F: |Fahrenheit scale.
V: | Volts. The unit of voltage.
У, ту mV: | Millivolt. 1x10° or 0.001 volts.
A: |Amperes (amps). The unit of current.
A,mA,HA | mA: | Milllamp. 1x10% or 0.001 amperes.
A: — | Microamp. 1x10* or 0.000001 amperes
Q Ohm. The unit of resistance.
QKQMQ| kQ: |Kilohm. 1x10’ or 1000 ohms.
MO: | Megohm. 1x10 or 1,000,000 ohms.
KHz |KHz:|Kilohertz. 1x10° or 1000 hertz.
F: |Farad.The unit of capacitance.
HF,nF | F: |Microfarad.1x10*or 0.000001 farads.
nF: | Nanofarad. 1x10"or 0.000000001 farads.
MAS TECH,
2.3 Keypad
See Table 2 indicated for information about the keypad
tions.
operations Table 2. Keypad
Key | Function Operation performed
© [Any switch position [turn the meter on or off
Press HOLD to enter and
exit the Data Hold mode.
HOLD | Any switch position
Press % to turn the
backlight on. After about
5 seconds, the backlight
is auto-off.
=O= | Any switch position
2.4 Terminals
See Table 3 indicated for information about the terminals.
Table 3. Terminals
Terminal Description
Return terminal for all measurements.
COM | (Receiving the black test lead or the "com” plug
of the special multi function socket)
Input for voltage, resistance, diode and continuity
measurements. (Receiving the red test lead)
Input for capacitance, Temperature, hFE and
TEMP mA | mA current measurements. (Receiving the red
JE hFE | test lead or the” +” plug of the special
multi-function socket)
Input for 200MA to 10A current measurements.
(Receiving the red test lead)
»+V OQ Hz
10A
MAS TECH,
2.5 Accessories
Delivered with the multimeter:
* User's manual One piece
* Test leads One piece
* "K" type bead Thermocouple [One piece
* Special Multi-function socket | One piece
3. FUNCTION DESCRIPTION
3.1 General Functions
3.1.1 DATA HOLD mode
Data Hold mode makes the meter stop updating the
display. Data Hold function can be cancelled by
changing the measurement mode, or push HOLD
key again.
To enter and exit the Data Hold mode:
1. Press HOLD key. Fixes the display on the current
value, D] is displayed.
2. A second short press returns the meter to normal
mode.
3.1.2 Battery Saver
Turn on the meter. And then The Meter will be turned
off automatic after approx. 15 minutes.
3.1.3 Non Contact AC Voltage detection
Hold the Meter so that the Meter's top is vertically and
horizontally centered and contacting the conductor ,
when the live voltage > 110V(RMS),the sensing
indicator will be on.
MAS TECH,
Note:
1: Even without LED indication, the voltage may still
exist. Do not rely on non-contact voltage detector
to determine the presence of voltage wire,
Detection operation may be subject to socket
design, insulation thickness and different type
and other factors
2: When the meter input terminals presence voltage,
due to the influence of presenced voltage, voltage
sensing indicator may also be bright.
3: Keep the meter away from electrical noise sources
during the tests, i.e., florescent lights, dimmable
lights, motors, etc.. These sources can trigger
NON-Contact AC Voltage Detection Function and
invalidate the test.
3.2 Measurement Functions
3.2.1 AC and DC Voltage measurement
To avoid electrical shock and/or damage to the
A instrument, do not attempt to take any voltage
measurement that might exceeds 600V DC or
600V AC rms.
To avoid electrical shock and/or damage to the
instrument, do not apply more than 600V DC or
600V AC rms between the common terminal and
the earth ground.
Voltage is the difference in electrical potential between two
points.
The polarity of ac (alternating current) voltage varies over
time; the polarity of dc (direct current) voltage is constant.
MAS TECH,
The Meter's DC voltage ranges are 200.0mV, 2.000V, 20.00V,
200.0V and 600V; AC voltage ranges are 2.000V, 20.00V,
200.0V and 600V.
To measure ac or dc voltage:
1. Set rotary switch to the proper range.
2. Connect the black and red test leads to the COM and V
terminals respectively.
3. Connect the test leads to the circuit being measured
4. Read the displayed value. The polarity of red test lead
connection will be indicated when making a DCV
measurement.
Note:
Unstable display may occur especially at DC200mV and
AC2V ranges, even though you do not put test leads into
input terminals, in this case, if an erroneous reading is
suspected, short the V terminal and the COM terminal,
and make sure the zero display.
3.2.2 Resistance measurement
To avoid electrical shock and/or damage to the
A instrument, disconnect circuit power and
discharge all high-voltage capacitors before
measuring resistance.
Resistance is an opposition to current flow.
The unit of resistance is the ohm (Q).
The Meter's resistance ranges are 200.0Q, 2.000kQ,
20.00kQ, 200.0kQ, 2.000MQ, 20.00MQ and 200.0MQ.
To measure resistance:
1. Set the rotary switch to proper range.
2. Connect the black and red test leads to the COM and Q
terminals respectively.
3. Connect the test leads to the circuit being measured
and read the displayed value.
MAS TECH,
Some tips for measuring resistance:
* The measured value of a resistor in a circuit is often
different from the resistor's rated value. This is
because the Meter's test current flows through all
possible paths between the probe tips.
* In order to ensure the best accuracy in measurement
of low resistance, short the test leads before
measurement and memory the test probe resistance
in mind. This necessary to subtract for the resistance
of the test leads.
* On 20MQ and 200MQ ranges, the meter may take
a few seconds to stabilize reading. This is normal
for high resistance measuring.
* When the input is not connected, i.e. at open circuit,
the figure "1" will be displayed for the over range
condition.
3.2.3 Diode Test
A To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and
discharge all high-voltage capacitors before
testing diodes.
Use the diode test to check diodes, and other semi- conductor
devices. The diode test sends a current through the
semiconductor junction, and then measures the voltage drop
across the junction; a good silicon junction drops between
0.5V and 0.8V.
To test a diode out of a circuit:
1. Set the rotary switch to} range.
2. Connect the black and red test leads to the COM and ++
terminals respectively.
13
MAS TECH,
3. For forward-bias readings on any semiconductor component,
place the red test lead on the component's anode and place
the black test lead on the component's cathode.
4. The meter will show the approx. forward voltage of the diode.
If the test lead connection is reversed,only figure "1" displayed.
In a circuit, a good diode should still produce a forward bias
reading of 0.5V to 0.8V; however, the reverse-bias reading can
vary depending on the resistance of other pathways between
the probe tips.
3.2.4 Continuity Check
A To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and
discharge all high-voltage capacitors before
testing for Continuity.
Continuity is a complete path for current flow.
The beeper sounds if a circuit is complete. These
brief contacts cause the Meter to emit a short beep.
To test for continuity:
1. Set the rotary switch to 01) range.
2. Connect the black and red test leads to the COM
and Q terminals respectively.
3. Connect the test leads to the resistance in the
circuit being measured.
4. When the test lead to the circuit is below approx.
30Q), a continuous beeping will indicate it.
Note:
Continuity test is available to check open/short of the
circuit.
14
MAS TECH,
3.2.5 Capacitance measurement
A To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and
discharge all high-voltage capacitors before
measuring capacitance.
Use the dc voltage function to confirm
that the capacitor is discharged.
Capacitance is the ability of a component to store an electrical
charge.
The unit of capacitance is the farad (F). Most capacitors are in
the nanofarad to microfarad range.
The Meter's capacitance ranges are 20.00nF,200.0nF,2.000uF,
and 200.0pF.
To measure capacitance:
1. Set the rotary switch to proper range.
2. Connect the black and red test leads to the COM and dE
terminals respectively.
3. Connect the test leads to the capacitor being measured
and read the displayed value.
Some tips for measuring capacitance:
» The meter may take a few seconds to stabilize reading.
This is normal for high capacitance measuring.
* То improve the accuracy of measurements less than 20nF,
subtract the residual capacitance of the Meter and leads.
15
MAS TECH,
3.2.6 Transistor measurement
To avoid electrical shock and/or damage to the
A instrument, do not apply more than 250Vdc or
250Vac rms between the hFE terminal and the
COM terminal.
. Set the rotary switch to hFE range.
. Connect the“com”plug and“+”plug of the special
multi-function socket to the COM and hFE terminals.
. Determine whether the transistor to be tested is NPN or
PNP type and locate the Emitter, Base and Collector leads.
. Insert leads of the transistor into proper holes of the special
multi-function socket.
5. The meter will show the approx. hFE value at test condition
of base current 10NA and Vce 2.8V.
3.2.7 Frequency measurement
A Do not measure Frequency on high voltage
(>250V) to avoid electrical shock hazard and/or
damage to the instrument.
© № —
Frequency is the number of cycles a voltage or current signal
completes each second.
To measure frequency:
1. Set the rotary switch to 20kHz range.
2. Connect the black and red test leads to the COM and Hz
terminals respectively.
3. Connect the test leads to the circuit being measured.
4. Read the displayed value.
MAS TECH,
3.2.8 Temperature measurement
A To avoid electrical shock and/or damage to the
instrument, do not apply more than 250Vdc or
250Vac rms between the °C terminal and the
COM terminal.
To avoid electrical shock, do not use this
instrument when voltages at the measurement
surface exceed 60v dc or 24v rms. Ac.
To avoid damage or burns. Do not make
temperature measurements in microwave ovens.
To measure temperature:
1. Set the rotary switch to TEMP range and the LCD will show
the current environment temperature.
2. Connect the”com”plug and”+”plug of the special
multi-function socket to the COM and Temp terminals.
. Insert ‘K’ type thermocouples into the special multi-function
socket, Takings care to observe the correct polarity.
. Touch the object with the thermocouple probe for
measurement.
. Read the stable reading from LCD.
3.2.9 Current measurement
To avoid damage to the Meter or injury if the fuse
A blows, never attempt an in-circuit current
measurement where the open-circuit potential to
earth is greater than 250V.
To avoid damage to the meter, check the meter's
fuse before proceeding. Use the proper terminals,
function, and range for your measurement. Never
place the test leads in parallel with a circuit or
component when the leads are plugged into the
current terminals.
a => o
17
MAS TECH,
Current is the flow of electrons through a conductor.
The Meter's DC current ranges are 20.00mA, 200.0mA
and 10.00A; AC current ranges are 20.00mA, 200.0mA
and 10.00A.
To measurecurrent:
1. Turn off the power of the measured circuit.Discharge all the
high voltage capacitors.
2. Set the rotary switch to the proper range.
3. Connect the black test lead to the COM terminal and the
red test leads to the mA terminal for a maximum of 200mA.
For a maximum of 10A, move the red test lead to the 10A
terminal.
4. Break the circuit path to be tested.
Connect the black test lead to the more negative side of the
break; connect the red test lead to the more positive side of
the break. (Reversing the leads will give a negative reading,
but will not damage the Meter.)
5. Turn on the power of the measured circuit, and then read
the display. Be sure to note the measurement units at the
right side of the display (mA or A). When only the figure "1"
displayed, it indicates overrange situation and the higher
range has to be selected.
6. Turn off the power of the measured circuit and discharge
all the high voltage capacitors. Remove the test leads and
recover the measured circuit.
MAS TECH,
4. TECHNICAL SPECIFICATIONS
4.1 General Specifications
* Environment conditions:
600V CAT.III
Pollution degree: 2
Altitude < 2000m
Operating temperature:
0~40°C, 32°F~122°F(<80% RH, <10°C noncondensing)
Storage temperature:
-10~60 °C, 14°F~140°F(<70% RH, battery removed)
e Temperature Coefficient:
0.1x(specified accuracy) /°C(<18°C or >28°C)
MAX. Voltage between terminals and earth ground:
750V AC rms or 1000V DC.
* Fuse Protection: mA: fuse (FF400mA/1000V)
A: fuse (FF10A/600V)
* Sample Rate: 3 times/sec for digital data.
* Display: 3 1/2 digits LCD display. Automatic indication
of functions and symbols.
* Over Range indication: LCD will display "1".
* Low battery indication:
The "E#"is displayed when the battery is under the
proper operation range.
Polarity indication: " =" displayed automatically.
* Power source: 9V ==
* Battery type: NEDA 1604, 6F22, or 006P.
* Dimensions: 188(L) x 92(W) x 50(H) mm.
* Weight: 380g. Approx. (battery included).
MAS TECH,
4.2 Measurement specifications
Accuracy is specified for one year after calibration, at
operating temperatures of 18°C to 28°C, with relative
humidity at 0% to 75%.
Accuracy specifications take the form of:
+(% of Reading + Number of Least Significant Digits)
4.2.1 DC Voltage
Range |Resolution Accuracy
200mV |0.1mV
2V mV +(0.5% of rdg +1 digit)
20V 10mV
200V |100mV
1000V |1V +(0.8% of rdg +2 digits)
Input impedance: 10MQ
Max. input voltage: 250Vdc or ac rms for 200mV range
and 1000Vdc or 750V ac rms for other ranges,
4.2.2 AC Voltage
Range | Resolution [Accuracy
2V 1mV
20V 10mV +(0.8% of rdg +3 digits)
200V |[¡100mV
750V |1V +(1.2% of rdg +3 digits)
Input impedance: 10MQ
Max. input voltage: 250Vdc or ac rms for 200mV range
and 1000Vdc or 750V ac rms for other ranges,
Frequency Range: 40Hz-400Hz ranges.
Response: Average, calibrated in rms of sine wave
MAS TECH,
4.2.3 Frequency
Range | Resolution | Accuracy
20kHz | 10 Hz +(1.5% of rdg+5 digits)
Overload protection: 250V DC or 250V AC rms.
Input Voltage range: 200mV-10V AC rms.
4.2.4 Resistance
Range | Resolution Accuracy
2000 10.10 +(0.8% of rdg +3 digits)
2kQ 10
20kQ |100 +(0.8% о? гад +1 digit)
200kQ 11000
2MQ 1kQ
20MQ | 10kQ +£(1.0% of rdg +2 digits)
200MQ | 0.1MQ +(5.0% +10 digits)
Overload protection: 250V dc or 250Vac rms.
Open Circuit Voltage: Less than 700mV.
4.2.5 Diode
Range | Resolution Function
Display read approx.
Le mV forward voltage of diode
Forward DC Current: approx. 1mA
Reversed DC Voltage: approx. 2.8V
Overload protection: 250VDC or 250VDC rms.
MASTECHo
4.2.6 Audible continuity
Range | Continuity beeper
о!) | <300
Test Current: approx. 1mA
Reversed DC Voltage: approx. 2.8V
Overload protection: 250VDC or 250VAC rms.
4.2.7 Transistor
Range | Description Test Condition
Display read approx.
HFE value (0-1000) of | Base Current approx.
hFE transistor under test 10uA, Vce approx. 2.8V.
(all type).
4.2.8 Temperature
Range Resolution | Accuracy
-20°C~0°C +(5.0% of rdg +4 digit)
1°C~400°C 1°C +(2.0% of rdg +3 digit)
401°C~1000°C +(2.0% of rdg +5 digit)
Overload protection: fuse(FF400mA/1000V).
*Temperature specifications do not include thermocouple errors.
MAS TECH,
4.2.9 Capacitance
Range | Resolution Accuracy
20nF 10pF a
+(4.0% of rdg +3 digit
200nF |0.1nF (4.0% of rdg +3 digit)
2uF 1nF
200uF | 100nF +(5.0% of rdg +10digit)
Overload protection:fuse(FF400mA/1000V).
4.2.10 DC Current
MAS TECH,
For measurements>5A, 10 Seconds maximum ON to measure
1 minutes OFF; Above 10A unspecified.
Frequency Range: 40Hz-400Hz
Response: Average, calibrated in rms of sine wave
5. MAINTENANCE
Do not attempt to repair or service your Meter
unless you are qualified to do so and have the
relevant calibration, performance test, and service
information.
5.1 General Maintenance
Range [Resolution | Accuracy
20mA | 10pA +(0.8% of rdg +1digit)
200mA | 0.1mA +(1.5% of rdg +1digit)
10A 10mA +(2.0% of rdg +5 digits)
A To avoid electrical shock or damage to the
meter, do not get water inside the case.
Remove the test leads and any input signals
before opening the case
Overload protection: fuse (FF400mA/1000V).
10A range fuse (FF10A/600V)
Max. input current: 200mA dc or 200mA ac rms for mA range,
10A dc or 10A ac rms for 10A ranges.
For measurements>5A, 10 Seconds maximum ON to measure
1 minutes OFF; Above 10A unspecified.
4.2.11 AC Current
Range | Resolution Accuracy
20mA |1OUA +(1.0% of rdg +3digit)
200mA |0.1mA +(1.8% of rdg +3digit)
10A |10mA +(3.0% of rdg +7 digits)
Overload protection: Resettable fuse(FF400mA/1000V).
10A range fuse(FF10A/600V)
Max. input current: 200mA dc or 200mA ac rms for mA range,
10A dc or 10A ac rms for 10A ranges.
23
Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents.
Dirt or moisture in the terminals can affect readings.
To clean the terminals:
* Turn the meter off and remove all test leads.
* Shake out any dirt that may be in the terminals.
* Soak a new swab with a cleaning and oiling agent
(such as WD-40).
* Work the swab around in each terminal. The oiling
agent insulates the terminals from moisture-related
contamination.
24
MAS TECH,
5.2 Battery And Fuse Replacement
A To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the battery as soon as the battery
indicator (E4) appears.
Use only fuses with the amperage, interrutp,
voltage And speed ratings specified
FF4A00mA/1000V Min interrupt rating 10000A
FF10A/600V Min interrupt rating 10000A
To replace the battery or fuse:
* Turn the meter off.
* Disconnect test leads and/or any connectors from
the terminals.
* Use a screwdriver to unscrew the two screws
secured on the battery cover.
* Take out the battery cover from the meter.
* Remove the used batteriesor damaged fuse.
* Replace with the new 9V batteries (6F22)or new fuse.
* Rejoin the battery cover and secure by the two screws.
/N CAUTION
Using this appliance in an environment with a
strong radiated radio-frequency electromagnetic
field (approx. 3V/m), may influence its measuring
accuracy. The measuring result can be strongly
deviating from the actual value.
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