• Digital clamp meter measures AC and DC current to 2,000 amp, AC voltage to 750V, DC voltage to 1,000V, and resistance to 4,000 ohms.
• Average-sensing meter provides accurate readings when measuring linear loads, where the current or voltage has a sinusoidal waveform.
• Jaw opening measures current in a conductor up to 55mm without touching or interrupting the circuit.
• Data hold function keeps the most recent reading on the display after disconnecting from the circuit.
• Meets IEC safety standards EN61010-1, EN61010-2-031, and EN61010-2-032, and is rated for CAT III installations to 600V and CAT II to 1000V.

The Yokogawa CL250 digital clamp meter is an average-sensing, manual- and auto-ranging multimeter for measuring current, voltage, and resistance in electrical testing applications. It has a clamp that measures AC current to 2,000 amp and DC current to 2,000 amp. The clamp has two jaws that can close around an electrical conductor up to 55mm in diameter to measure current without touching or interrupting the circuit. A set of test leads is included for measuring AC voltage to 750, DC voltage to 1,000V, and resistance to 4,000 ohms. To aid documentation of readings and capture readings in tight spaces, the data hold function keeps the most recent reading on the display after disconnecting from the circuit. An audible continuity sensor confirms that the circuit conducts electricity. The meter has a 3,999-count LCD that shows readings numerically. It comes with an output plug to connect to a device for DC output. The unit operates on two AA batteries, and turns off automatically after 10 minutes of non-use to conserve battery life. It has a low-battery indicator that signals when the battery needs to be replaced. Clamp meters are typically used by electrical engineers to measure properties of electrical current without physically touching or disconnecting the conductor. This average-sensing, or average-responding, meter provides accurate readings when measuring linear loads, such as standard induction motors and incandescent lights, where the current or voltage has a sinusoidal waveform. It has two ranging modes: manual, which allows the user to select the operating range, and auto, which automatically selects the appropriate operating range. Accuracy and resolution specifications ( # ) vary according to the range being measured. It meets International Electrotechnical Commission (IEC) safety standards EN61010-1, EN61010-2-031, and EN61010-2-032, and it is rated for CAT III installations to 600V, which covers items used with enclosed building circuit installations, such as service panel parts, branch circuits, and fixed installations that are connected directly to a building's AC power supply, and for CAT II to 1,000V, which covers energy-consuming equipment connected to a fixed installation, including household, office, and laboratory appliances. The unit comes with a battery, a test lead set, an output plug, a carrying case, and instructions. Specifications -------------- Maximum AC input2,000 ampMaximum DC input2,000 ampMaximum AC voltage input750VMaximum DC voltage input1,000VMaximum resistance detected4000ΩInstallation ratingCAT III, 600V; CAT II, 1000VStandards metIEC safety standards EN61010-1, EN61010-2-031, and EN61010-2-032Power supply(2) AA batteriesWeight540gDimensions250 x 105 x 49mm (H x W x D) H is height, the vertical distance from the 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, 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. A current clamp has two jaws that fit around a conductor to take measurements. 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 voltages. 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. Yokogawa manufactures test and measurement equipment, navigation systems, and industrial control systems. The company, founded in 1915 in Tokyo, Japan, has U.S. headquarters in Sugar Land, TX. It meets International Organization for Standardization (ISO) standard 9001:2008. What's in the Box? ------------------ * Yokogawa CL250 clamp meter * Test lead set * Output cable * (2) AA batteries * Case * Instructions