TPI 135 DMM Digital Multimeter features 4,000 count display, 0.5 percent DCV basic accuracy, 0 to 750 ACV; max resolution 0.1mV,0 to 1,000 DCV; max resolution 0.1mV,0 to 40M ohm; max resolution 0.1 ohm, 0 to 10 amps AC/DC; 0.1uA resolution, Data hold, cULus 61010-1, CAT II - 1000V, CAT III - 600V, 3 Year Limited Warranty.
The TPI 135 digital multimeter (also known as a multitester) is an average-sensing, manual-ranging meter for measuring voltage, current, and resistance in electrical testing and heating, ventilation, air-conditioning, and refrigeration (HVAC/R) applications. The meter comes with a set of detachable test leads.
An audible continuity sensor confirms a circuit conducts electricity, and a diode test detects proper functioning of a circuit’s diodes. The hold function keeps a reading on the LCD, even after the meter is disconnected. A low-battery indicator signals when the meter's batteries need to be replaced. A removable rubber holster helps protect the meter during transport and storage.
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 an undistorted waveform. It is a manual-ranging meter and requires the operator to choose the appropriate operating range. The LCD has a 4,000-count resolution, meaning it can display up to 3,999 units (3-3/4 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 1,000V, which covers large household appliances and devices connected to a fixed power supply (such as refrigerators and air conditioners), and 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).