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Non-Intrusive Low DC Current Measurement (−100 mA to +100 mA): DC current measurement in 4–20 mA process loops with a high resolution of 0.01 mA (10 µA).
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High Process Measurement Accuracy (up to 0.1%): Accuracy in the basic measurement range from −24 mA to +24 mA is ±(0.1% of reading + 2 digits) according to the datasheet / ±(0.5% of reading + 5 digits) according to the user manual. Percentage display of the process measurement range (0.0%).
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Colour TFT LCD Display (160 × 80): Bright, full-colour display ensuring excellent readability even in complete darkness. Displays measurement values, battery charge level, measurement units and REL zeroing mode.
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Built-in Li-ion Battery & USB-C Charging: Powered by a built-in 3.7 V / 700 mAh lithium-ion rechargeable battery for extended operation. Convenient charging via a standard USB Type-C port (5 V DC / 500 mA).
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Compact 4.5 mm Clamp Jaws: Slim clamp design enables easy current measurement on closely spaced wires and terminal blocks in electrical control cabinets.
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Zeroing (REL) and Data Hold Functions: One-button zero adjustment to compensate for residual magnetic fields (REL) and Data Hold function to freeze measurement readings.
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Automatic Power Saving: Auto Power-Off function automatically switches off the instrument after 20 minutes of inactivity.
Portable DC clamp meter for industrial automation and industrial processes – VA771
The portable VA771 digital DC clamp meter (mA Process Clamp Meter) is a specialized, high-precision measuring instrument designed for non-intrusive measurement of low DC currents in industrial automation current loops (4–20 mA / 0–20 mA), process control systems, electronic circuit adjustment and precision equipment maintenance. The instrument enables fast and accurate verification of current magnitude and direction without opening the circuit or interrupting the measurement loop. The device features a backlit, full-colour 160 × 80 TFT LCD display with 2400 counts, a residual current compensation and zeroing function (REL), a built-in 3.7 V / 700 mAh lithium-ion (Li-ion) rechargeable battery charged via a USB Type-C port (5 V / 500 mA), and miniature clamp jaws with an internal diameter of 4.5 mm.
