Major tech MTD73A Bedienungsanleitung

MTD73A

800A AC 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 AC

800A AC

V DC, V AC

600V 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 / Flashlight

8. Data Hold button

9. REL button for Relative Measurement

10. Flashlight and LCD backlight button

11. LCD display

12. COM input jack

13. V Ω Diode Continuity CAP TEMP Hz% jack

14. Battery Cover

Display icons Description

HOLD Data Hold

Minus sign Negative reading display

0 to 3999 Measurement display digits

NCV Non-Contact Voltage

AUTO Auto Range mode

DC Direct 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)

oC 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)

Current

1mA

< 40A: (3.0%

rdg + 5digits)

˃40A: (2% rdg

+ 5 digits)

40A

10mA

400A

100mA

800A

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)

AC Voltage

(Auto

Ranging)

1mV

+1.0% of rdg

+ 5digits

40V

10mV

400V

100mV

600V

Input impedance 10MΩ. Overload protection 1000V DC or

750V AC peak value

Frequency response 600V at 40Hz to 1kHz (sine), other ranges

50/60Hz (all wave)

Function

Range

Resolution

Accuracy

(% of reading +

digits)

DC Voltage

(Auto

Ranging)

400mV

0.1mV

+1.0% of rdg +

5digits

4.00V

1mV

+0.5% of rdg +

5digits

40.0V

10mV

400V

0.1V

600V

Input impedance on 400mV range ˃ 40MΩ all other ranges

10MΩ. Overload protection 1000V DC or 750V AC peak value

Function

Range

Resolution

Accuracy

(% of reading +

digits)

Resistance

(Auto

Ranging)

400Ω

0.1Ω

+0.8% of rdg +

5digits

4kΩ

1Ω

+0.8% of rdg +

3digits

40kΩ

10Ω

400kΩ

100Ω

4MΩ

1kΩ

40MΩ

10kΩ

+1.0% of rdg +

5digits

Input Protection: 250V DC or 250V AC RMS

Note: a. On 400Ω 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.

Warning DO NOT apply voltage to this range

Function

Range

Resolution

Accuracy

(% of reading +

digits)

Capacitance

(Auto-

ranging)

4nF

0.nF

(5% reading +

20 digits)

40nF

0.01nF

400nF

0.1nF

(2.5% reading

+ 5 digits)

4uF

0.001µF

40uF

0.01µF

400uF

100nF

(5% reading +

10 digits)

4mF

1uF

40mF

10uF

Input Protection: 250V DC or 250V AC RMS

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% reading

+ 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

Warning DO NOT apply voltage to this range

Function

Range

Resolution

Accuracy

(% of

reading +

digits)

Temperature

-40°C to 1000°C

1°C

< 400°C:

+1.0% of rdg

+ 5°C

≥ 400°C:

+1.5% of rdg

+ 5°C

Input Protection: 250V DC or 250V AC RMS

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

Function

Testing Condition

Reading

Diode

Forward DCA is approx.

0.8mA, open circuit

Voltage MAX. 2.2V

Diode forward voltage

drop

Continuity

Open circuit Voltage

MAX. 2V

Buzzer makes a

continuous sound

while resistance is less

than (50)

General Specifications

Clamp jaw opening 28mm approx.

Display 4000 Count (3-3/4 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

Input Impedance 10M(VDC and VAC)

AC response Average Reading (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 2000 meters (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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