Extech MA640 600Amp AC/DC True RMS Clamp Meter

Extech MA640 is a 600Amp AC/DC True RMS Clamp Meter that can measure AC/DC current, AC/DC voltage, resistance, capacitance, frequency, diode testing, duty cycle, and continuity. It also has special features for thermocouple temperature measurement and non-contact voltage detection.


Extech MA640 600Amp AC/DC True RMS Clamp Meter - cover page
Brand
EXTECH
Category
Other Electronics
Document type
User Manual
Language
Chinese
Pages
12
File format
PDF
File size
543 KB
Published
21 October, 2022
Updated
28 September, 2023
Model
MA640
MD5 checksum
EB06C5C70585E5AA940974974EAA1308

About this manual

The Extech MA640 is a dual-mode clamp meter designed to measure AC/DC current, voltage, resistance, capacitance, frequency, duty cycle, continuity, and temperature. It features a robust double-shell design and includes special functions such as non-contact voltage detection and thermal coupling temperature measurement. This manual is written in Chinese.

What's inside

  • Introduction
  • Safety Instructions
  • Operation
  • Non-Contact Voltage Detection
  • AC/DC Current Measurement
  • AC/DC Voltage Measurement
  • Resistance and Continuity Testing
  • Diode and Capacitance Testing
  • Frequency and Duty Cycle
  • Temperature Measurement

Specifications

Max AC Current600A
Max DC Voltage600V
Frequency Range10Hz to 10kHz
Temperature Range (K-Type)-20°C to 760°C

Frequently asked questions

What is the maximum current measurement range?

The instrument can measure up to 600A of AC or DC current.

How do I zero the DC current measurement?

Select ADC, ensure no wire is in the jaws, press the REL button to store the offset value.

What happens if I leave the meter unused for over 60 days?

You should remove the battery to prevent damage or leakage.

Download PDF (543 KB)

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