HTC DM 81 Digital Multimeter Alongwith Calibration Certificate

A multimeter or a multitester, also known as a VOM (Volt-Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common than analogueue ones, but analog multimeters are still preferable in some cases, for example when monitoring a rapidly-varying. When testing the magnifying ratio of the transistor, turn the switch to the hFE position and connect the transistor to the eight-hole jack available in blue colour. For the Square wave output, the frequency is 50Hz, the voltage is approximately 3Vp-p. The output jack is “VΩmA” and “COM”.

• DV Voltage - 200mV 0.1mV ±1.2% of rdg + 5 digits - 2V 1mV ±1.2% of rdg + 5 digits - 20V 10mV ±1.2% of rdg + 5 digits - 200V 100mV ±1.2% of rdg + 5 digits - 1000V 1V ±1.5% of rdg + 5 digits
• DV Current - 2mA 1µA ±1.5% of rdg + 5 digits - 200mA 10µA ±2% of rdg + 5 digits - 20A 10mA ±3% of rdg + 5 digits
• AC Voltage - 200mV 0.1mV ±2% of rdg + 5 digits - 2V 1mV ±1.8 of rdg + 5 digits - 20V 10mV ±1.5 of rdg + 5 digits - 200V 1000mV ±1.5 of rdg + 5 digits - 750V 1V ±2% of rdg + 7 digits
• AC Current - 2mA 1µA ±2% of rdg + 5digits - 200mA 100µA ±2.5% of rdg+ 5digits - 20A 10mA ±3% of rdg+ 7digits
• Resistance Range Resolution Accuracy 200Ω 0.1Ω ±（1.5%+5） 2KΩ 1Ω 20KΩ 10Ω 200KΩ 100Ω 2MΩ 1KΩ 20MΩ 10KΩ ±（2%+5） 200MΩ 100KΩ ±（5%+5）-10
• Diode and Continuity Test Range Description Measuring Condition Read approximate forward voltage of diode Forward DC current approx. as 1mA; Inverse DC voltage approx. as 2.8V Built-in buzzer will sound if resistance is less than 50Ω, display resistance approximate value Open circuit voltage approximate as 2.8V