EXTECH EX840 1000A AC DC True RMS Clamp Meter

EXTECH EX840 1000A AC DC True RMS Clamp DMM IR Thermometer key features:

  • Non-contact IR Temperature measurements with laser pointer
  • True RMS Current and Voltage measurements
  • Peak hold captures inrush currents and Transients
  • Multimeter functions: AC/DC Voltage, Resistance, Capacitance, Frequency, Diode, and Continuity
    1.7″ (43mm) jaw opening for conductors up to 750MCM or two 500MCM
    4000 count backlit display
  • Data Hold and Min/Max, Auto Power off
  • Complete with standard test leads, 9V battery, general purpose Type K probe, belt holster, and professional CAT III-1000V Test Leads


(1 customer review)

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EXTECH EX840 1000A AC DC True RMS Clamp DMM IR Thermometer

This CAT IV True RMS clamp meter has an integrated IR thermometer with laser pointer for non-contact surface measurements ranging from -58 to 518 °F (-50 to 270 °C). The clamp measures alternating current current up to 1000 amps with a maximum resolution of 0.1 amp. The 1.7-inch jaw can accommodate conductors up to 750MCM. Peak hold records surges such as motor inrush currents. Data hold and auto power off are features.

EXTECH EX840 1000A AC DC True RMS Clamp DMM IR Thermometer specifications:

  • AC Current 0.1 to 1000A ±2.8%
  • DC Current 0.1 to 1000A ±2.8%
  • AC Voltage 0.1mV to 1000V ±1.5%
  • DC Voltage 0.1mV to 1000V ±2.8%
  • Resistance 0.1 to 40MΩ ±1.5%
  • Capacitance 0.001nF to 40,000μF ±3.0%
  • Frequency 0.001kHz to 4kHz ±1.5%
  • IR Temperature -58 to 518ºF (-50 to 270ºC) ±2.0% rdg or ±4ºF/±2ºC
  • Type K Temperature -4 to 1400ºF (-20 to 760ºC) ±(3%rdg+9°F/5ºC)
  • Continuity Yes
  • Inrush Yes
  • Diode Yes
  • Dimensions 10.6×4.3×2″ (270x110x50mm)
  • Weight 13.6oz (386g)
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1 review

1 review for EXTECH EX840 1000A AC DC True RMS Clamp Meter

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  1. George

    This is the perfect meter for me

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EXTECH meters and testers help you ensure uptime, maximize productivity and verify compliance. Whether used as a component of an effective predictive maintenance program or as a key tool for a rapid response repair team, EXTECH instruments are the meters of choice for professionals who need to solve problems. Extech continues to build brand loyalty and trust among electrical contractors, industrial mechanics, facilities maintenance, HVAC/R technicians, sustainability & safety directors, public works managers, building & restoration contractors, and more. Extech products are backed with a standard full 2-year warranty, and select products up to 3 years, against defects.


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