Major tech MTD75T Manual de usuario
MTD75T
800A AC/DC True RMS
Digital Clamp Meter
Instruction Manual
Safety
International Safety Symbols
This symbol, adjacent to another symbol or
terminal, indicates the user must refer to the
manual for further information.
This symbol, adjacent to a terminal, indicates that,
under normal use, hazardous voltages may be
present.
Double insulation.
Application around and removal from uninsulated
hazardous live conductors is permitted.
SAFETY NOTES
•Do not exceed the maximum allowable input range of
any function.
•Do not apply voltage to meter when resistance
function is selected.
•Set the function switch OFF when the meter is not in
use.
•Remove the battery if meter is to be stored for longer
than 60 days.
WARNINGS
•Set function switch to the appropriate position before
measuring.
•When measuring volts do not switch to
current/resistance modes.
•Do not measure current on a circuit whose voltage
exceeds 600V.
•When changing ranges always disconnect the test
leads from the circuit under test.
CAUTIONS
•Improper use of this meter can cause damage, shock,
injury or death. Read and understand this user manual
before operating the meter.
•Always remove the test leads before replacing the
battery or fuses.
•Inspect the condition of the test leads and the meter
itself for any damage before operating the meter.
Repair or replace any damage before use.
•Use great care when making measurements if the
voltages are greater than 25VAC rms or 35VDC. These
voltages are considered a shock hazard.
•Always discharge capacitors and remove power from
the device under test before performing Diode,
Resistance or Continuity tests.
•Voltage checks on electrical outlets can be difficult and
misleading because of the uncertainty of connection to
the recessed electrical contacts. Other means should
be used to ensure that the terminals are not "live".
•If the equipment is used in a manner not specified by
the manufacturer, the protection provided by the
equipment may be impaired.
Function
Maximum Input
A DC , A AC
800A DC/AC
V DC, V AC
1000V DC/AC
Resistance, Capacitance, Frequency,
Diode Test，Temperature.
250V DC/ AC
Description
Meter Description
1. NCV Test
2. Current clamp
3. LED Flashlight
4. Non-contact AC voltage indicator light
5. Clamp trigger
6. Rotary Function switch
7. SELECTOR mode range button
8. Data Hold and Flashlight and LCD backlight button
9. RANGE button and DCA Zero
10. Frequency and % Duty Cycle button
11. LCD display
12. COM input jack
13. V Ω Diode Continuity CAP TEMP Hz% jack
14. Battery Cover
Display icons Description
Data Hold
Minus sign Negative reading display
0 to 5999 Measurement display digits
DCA Zero
NCV Non-Contact Voltage
APO Auto Power Off
AUTO Auto Range mode
DC Direct Current/Voltage
AC Alternating Current/Voltage
Low battery
mV or
V Milli-volts or Volts (Voltage)
ΩOhms (Resistance)
A Amperes (Current)
F Farad (Capacitance)
Hz/% Hertz (Frequency)/Percent(duty ratio)
oF and oC Fahrenheit and Celsius units (Temperature)
n, m, μ, M, k Unit of measure prefixes: nano, milli, micro,
mega, and kilo
•))) Continuity test
Diode test
Accessories supplied with Meter
Operating manual, 1 x red and 1 x black test lead set, Air
temperature probe, 2 x 1.5V AAA Batteries, Carrying case
Specifications
Function
Range
Resolution
Accuracy
(% of reading +
digits)
AC True
RMS
Current
60.00A
0.01A
±1.5% of rdg ± 5
digits
600.0A
0.1A
800.0A
1A
Over range protection: Maximum input 1000A
Accuracy specified from 5% to 100% of the measuring range
Frequency Response: 40Hz to 1kHz True RMS
Function
Range
Resolution
Accuracy
(% of reading +
digits)
DC Current
60.00A
0.01A
±1.5% of rdg
± 5 digits
600.0A
0.1A
800.0A
1A
Over range protection: Maximum input 1000A
Function
Range
Resoluti
on
Accuracy
(% of reading +
digits)
AC
Voltage
6.00V
1mV
±0.8% of rdg ± 5
digits
60.0V
10mV
600V
100mV
Input impedance 10MΩ. Overload protection 1000V AC rms
Frequency response 6000V at 40Hz to 1kHz (sine), other ranges
40/2kHz (all wave)
Function
Range
Resoluti
on
Accuracy
(% of reading + digits)
DC
Voltage
600mV
0.1mV
±1.0% of rdg ± 5 digits
6.00V
1mV
±0.5% of rdg ± 5 digits
60.0V
10mV
600V
100mV
Input impedance 10MΩ. Overload protection 1000Vrms
Function
Range
Resolution
Accuracy
(% of reading +
digits)
Resistance
600.0Ω
0.1Ω
±0.8% of rdg ±
5digits
6.000kΩ
1Ω
±0.8% of rdg ± 1
digits
60.00kΩ
10Ω
600.0kΩ
100Ω
6.000MΩ
1kΩ
60.00MΩ
10kΩ
±1.0% of rdg ± 5
digits
Input Protection: 250V dc or 250V ac rms
Note: a. On 600Ω range, short the test leads to measure lead
resistance, then subtract the value from the real measurement
b. When measuring resistance over 1MΩ, it is normal that the
reading reacts slowly, wait until reading is stable
Function
Range
Resolution
Accuracy
(% of reading
+ digits)
Capacitance
(Auto-
ranging)
6nF
1pF
± (5.0% rdg
± 10 digits)
60nF
10pF
± (2.5% rdg
±5 digits)
600nF
100pF
6uF
1nF
60uF
10nF
600uF
100nF
± (5% rdg
± 10 digits)
6mF
1uF
60mF
10uF
Ensure capacitors are discharged before measuring value
Warning DO NOT apply voltage to this range
Function
Range
Resolution
Accuracy
(% of reading +
digits)
Frequency
(Auto
Ranging)
10Hz
0.01Hz
± (0.5% rdg
± 4 digits)
100Hz
0.1Hz
1kHz
1Hz
10kHz
10Hz
100kHz
100Hz
1MHz
1kHz
10MHz
10kHz
Input Protection: 250V dc or 250V ac rms
Input sensitivity ˃ 0.7V
Function
Range
Resolution
Accuracy
(% of reading +
digits)
Temperature
-40°C to
+1000°C
1°C
<400°C: ±1.0% ±5°C
≥400°C: ±1.5% ±15°C
0°F to
+1832°F
1°F
<750°F: ±1.0% ±5°C
≥750°F: ±1.5% ±15°C
Sensor: Type K Banana Plug Thermocouple
Warning DO NOT apply voltage to this range
Input Protection: 250V dc or 250V ac rms
Warning DO NOT apply voltage to Continuity range
General Specifications
Clamp jaw opening 28mm approx.
Display 6000 Count (3-5/6 digits backlit LCD
Low Battery indication is displayed
Over-range indication ‘OL’ display
Measurement rate 3 readings per second, nominal
Temperature sensor Type K thermocouple 4mm terminals
Function
Testing Condition
Reading
Diode
Forward DCA is approx. 0.8mA,
open circuit Voltage MAX. 2.2V
Forward
voltage drop of
Diode
Continuity
Open circuit Voltage MAX. 2V
Buzzer makes a
continuous
sound while
resistance is
less than (50)
Input Impedance 10M(VDC and VAC)
AC response True rms (AAC and VAC)
ACV Bandwidth 2KHZ
Operating Temperature 5oC to 40oC (41oF to 104oF)
Storage Temperature -20oC to 60oC (-4oF to 140oF)
Operating Humidity Max 80% up to 31oC (87oF)
Decreasing linearly to 50% at 40oC
(104oF)
Storage Humidity <80%
Operating Altitude 2000meters (7000ft.) maximum.
Battery 2 x 1.5V AAA Battery
Battery life Approx. 30h (backlight ON), Approx.
100h (backlight OFF)
Auto power OFF After approx. 15 minutes
Dimensions 123 (W) x 270 (D) x 39 (H)mm
Weight 280g
Safety For indoor use and in the requirement
For double insulation IEC1010-1(2001):
EN61010-2-030, EN61010-2-032,
EN61010-2-033 Overvoltage Category
III 600V, Pollution Degree 2.
Operation
NOTES: Read and understand all Warning and Caution
statements in this operation manual prior to using this
meter. Set the function select switch to the OFF position
when the meter is not in use.
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