Key facts
- Brand
- EXTECH
- Model
- MA640
- Category
- Other Electronics
- Industry
- Industrial
- Documents
- 2
- Languages
- ZH · EN
- Last added
- 2022-10-21
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Extech MA640 600Amp AC/DC True RMS Clamp Meter
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.
Read onlineExtech MA640 specifications
| Max AC Current | 600A |
|---|---|
| Max DC Voltage | 600V |
| Frequency Range | 10Hz to 10kHz |
| Temperature Range (K-Type) | -20°C to 760°C |
All Extech MA640 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
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 is the difference between the MA620 and MA640?
The MA640 measures DC current, whereas the MA620 does not.
From: Extech MA620/MA640 600A True RMS Clamp Meter Product Leaflet
Does this meter measure non-sinusoidal waveforms?
Yes, it features True RMS for accurate readings of non-sinusoidal waveforms.
From: Extech MA620/MA640 600A True RMS Clamp Meter Product Leaflet