Ideal Industries 61-765 TightSight Series 760 True RMS Clamp-Meter, 660A AC/DC, Conductors to 36mm, Capacitance, Frequency, and Resistance Measurement

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Manufacturer Description

The Ideal Industries 61-765 digital clamp-meter is a true RMS sensing, manual- and auto-ranging multimeter for measuring current, voltage, capacitance, frequency, and resistance in electrical testing applications. It has a clamp that measures AC (alternating current) and DC (direct current) to 660A (amperes). The clamp has two jaws that can close around an electrical conductor up to 36mm (1.42 inches) in diameter to measure current without touching or interrupting the circuit. A set of test leads is included for measuring AC voltage to 750V, (DC voltage to 1,000V, capacitance to 1,000?F (microfarads), frequency to 400Hz (hertz), and resistance to 10,000? (ohms). Frequency can also be measured with the clamp. The meter has a rotary switch to select the property to measure, and both a front and a bottom 9,999-count LCD with a backlight for visibility in low light, that turns off automatically after three minutes. In addition to numerical readings, the front display shows readings on a 41-segment bar graph. The bottom display shows AC and DC current readings when taking measurements in tight spaces.

The meter features a low-pass filter that reduces high-frequency interference to allow accurate measurements of complex wave shapes. The peak hold function records the highest reading of voltage or current, while the maximum/minimum function tracks the highest and lowest readings for a property for as long as the function is engaged. To aid documentation of readings and capture readings in tight spaces, the data hold function keeps the reading on the display after disconnecting from the circuit. A continuity buzzer confirms that the circuit conducts electricity. The unit operates on a single 9V battery, and turns off automatically after 30 minutes of non-use to conserve battery life. It has a low-battery indicator that signals when the battery needs to be replaced.

This true RMS (root mean square) sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of the waveform. It is manual- or auto-ranging, depending on the property being measured. Manual-ranging allows the user to select the operating range and auto-ranging automatically selects the appropriate operating range. Accuracy and resolution specifications vary according to the range being measured. The meter meets IEC (International Electrotechnical Commission) safety standards 61010-2-032 and 61010-031, and is rated for CAT (category) IV installations to 600V, which covers equipment at the origin of the installation, such as electricity meters and primary over-current protection equipment, and CAT III installations to 300V, which covers equipment in fixed installations, such as switches in the fixed installation and some industrial equipment that is permanently connected to the fixed installation. It is Underwriters Laboratories (UL) listed 61010, has European Conformity (CE) marking, and complies with Australia N12966. The unit comes with a nylon carrying case.


Maximum AC (alternating current) input660A
Maximum DC (direct current) input660A
Maximum AC voltage input750V
Maximum DC voltage input1,000V
Maximum capacitance detected1,000?F
Maximum frequency detected400Hz
Maximum resistance detected10,000?
Installation ratingCAT IV, 600V
Standards metIEC safety standards 61010-2-032 and 61010-031; UL 61010 listed; CE marking; Australia N12966
Power supply 9V NEDA 1604 battery
Dimensions (H x W x D)222 x 80 x 45.5mm/8.7 x 3.1 x 1.8 inches

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Clamp-meters, also called clamp-on meters, have two jaws that fit around a conductor to measure electrical current without cutting through wires, or touching or interrupting the electrical circuit. Available in handheld or benchtop models, clamp-meters diagnose problems in electrical equipment, wiring, and power supplies. All clamp-meters test for current. Some come with test leads and inputs for measuring voltage, capacitance, and resistance. They display information either in analog or digital form. Factors that influence meter choice include the electrical properties to be measured, the anticipated range of results, and the desired level of protection against transient voltage. Safety ratings are based on International Electrotechnical Commission (IEC) standards for low-voltage test equipment. IEC 61010 delineates four overvoltage installation categories. In general, a meter with a category IV rating will provide more protection against transient voltages than a meter with a lower category rating.

Ideal Industries manufactures test and measurement equipment, electrical supplies, and tools, among other products. The company, founded in 1916, is headquartered in Sycamore, IL.

What's in the Box?
  • Ideal Industries 61-765 digital clamp-meter
  • Test lead set with alligator clips
  • 9V battery
  • Nylon carrying case
  • Instructions

Product Features

Digital clamp-meter measures AC and DC to 660A, AC voltage to 750V, DC voltage to 1,000V, capacitance to 1,000 microfarads, frequency to 400Hz, and resistance to 10,000 ohms True RMS sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of waveform Clamp with 36mm (1.42 inches) jaw opening measures current without touching or interrupting the circuit Backlit display on bottom of meter shows AC and DC current readings when taking measurements in tight spaces Meets IEC safety standards 61010-2-032 and 61010-031, and is rated for CAT IV installations to 600V and CAT III installations to 1,000V