INSTRUCTION MANUAL M75A 1-800-547-5740 • Fax: (503) 643-6322 www.ueitest.com • email: info@ueitest.
Introduction The M75A has the features you need for testing electrical and HVAC/R systems. Its voltage ranges are scaled to keep typical readings in the middle of the scale for increased accuracy and resolution. It also includes a low ohm scale to test critical connections as well as microamps and millivolts functions to verify heat anticipator and flame safeguard circuits.
Measuring DC Current Set the “SELECTOR” switch to the appropriate range. Always start with the 250 mA DC position if unsure of the magnitude of current present. When taking current measurements the meter must be connected in SERIES with the circuit, or circuit element, under test. Break the connection at which current is to be measured. Place the M75A in series with the circuit be connecting the black test lead to the “COM” jack and to the lower voltage side of the circuit.
Specifications Ranges DC Millivolts DC Volts DC Microamps DC Milliamps OHMS AC Volts Temperature Accuracy DC OHMS AC Temperature General Input Impedance Batteries Fuse 0 - 250 mV 0 - 2.5, 10, 50, 250, 1000 V 0 - 50 µA 0 - 25, 250 mA 0 - 500Ω, 5K, 50K 0 - 10, 50, 250, 500, 1000 V 0 - 250˚F ±3% of full scale ±3% of scale length ±4% of full scale ±2 divisions 20KΩ / V DC, 10KΩ / V AC Two 1.5V, size AA (NEDA #15D) batteries 1/4A (2.
M75A Analog Multimeter Limited Warranty The M75A is warranted to be free from defects in materials and workmanship for a period of three years from the date of purchase. If within the warra n ty period your instrument should become inoperative from such defects, the unit will be repaired or replaced at UEi’s option.
