Megger CHM2000 Cable Height Meter, 6-Line Separation, 35' Maximum Range

The Megger cable height meter measures the height of up to six overhead cables without touching or connecting to the wires in telecommunications, power utility, transportation, and construction applications. The meter transmits an ultrasonic frequency, which is reflected back to the unit when it bounces off a cable. The amount of time elapsed between when the sound is transmitted and when it is received by the unit indicates the height of the cable. The unit has a built-in temperature sensor that improves measurement accuracy by accounting for variations in the speed that sound travels in different ambient temperatures. Readings are given in meters, feet, or inches. The meter's calibration feature helps ensure accuracy of readings. The unit automatically turns off after three minutes of non-use to conserve battery life, and a low-battery indicator signals when the meter's batteries need to be replaced.

Specifications

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.

Multimeters are electrical test meters that measure multiple properties of an electrical circuit, such as current, voltage, resistance, capacitance, and continuity. Available in handheld or benchtop models, multimeters diagnose electrical problems in electrical equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Multimeters 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 the International Electrotechnical Commission's (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.

Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) standard 9001:2008.