The B&K Precision 2707B digital multimeter (also known as a multitester) is a true RMS, manual-ranging meter for measuring current, voltage, resistance, capacitance, and frequency, and performing diode, logic, continuity, and transistor common-emitter gain (hFE) tests in electrical applications. An audible continuity sensor confirms a circuit conducts electricity, and a diode test detects proper functioning of a circuit's diodes. The LCD is backlit for readability in low light. It displays the present measurement or the highest or lowest reading in a session, for tracking sudden changes in readings. The relative mode stores a reading in memory to use as a zero point for subsequent readings so that multiple readings can be compared. An alarm sounds when the test leads are connected to the wrong jack for the measurement being taken. A low-battery indicator signals when the meter's batteries need to be replaced. A magnetic strap is included for hanging the meter from a metal door or surface for hands-free use.
This true RMS (root mean square) meter provides accurate readings when measuring linear loads, such as standard induction motors and incandescent lights, where the current or voltage has an undistorted waveform, or nonlinear loads, such as electronic devices or motors, where the current or voltage has a distorted waveform. It is a manual-ranging meter that requires the operator to choose the appropriate operating range for the property being measured. The LCD has a 2,000-count resolution, meaning it can display up to 1,999 units (3-1/2 digits) before the operating range needs to be changed. It meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for Category II installations up to 1000V, which covers large household appliances and devices connected to a fixed power supply (such as refrigerators and air conditioners), Category III installations up 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 Pollution Degree 2 for indoor use. The meter includes a set of detachable test leads, a spare fuse, a 9V battery, a magnetic hanger, and instructions.
|Maximum alternating current (AC) input||10 amp|
|Maximum direct current (DC) input||10 amp|
|Maximum AC voltage input||750V|
|Maximum DC voltage input||1000V|
|Maximum resistance detected||2,000 megaohms|
|Maximum capacitance||20 microfarads|
|Maximum frequency range||20 MHz|
|Other tests||Diode, hFE transistor, logic, and continuity|
|Power supply||9V battery (one, installed)|
|Safety ratings||European Conformity (CE); International Electrotechnical Commission (IEC) safety standard 61010-1; European Union EMC (EN) EN61326|
|Weight||Approximately 10oz./285g (including battery and hanger)|
|Dimensions||165 x 78 x 42.5mm/6.5 x 3.1 x 1.7 inches (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.
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 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.
B&K Precision manufactures test and measurement instruments for research and development, production-line testing, and electronic field service applications. The company, founded in 1951, is headquartered in Yorba Linda, CA. It meets International Organization for Standardization (ISO) standard 9001:2008 and is compliant with Restriction of Hazardous Substances (RoHS) and waste electronic and electrical equipment (WEEE) directives.