Uni-T UT371 Digital Tachometer — Accurate Non-Contact RPM Measurement The Uni-T UT371 Digital Tachometer is a reliable non-contact instrument designed for accurate rotational speed measurement across a wide RPM range. With four selectable measurement ranges, high accuracy, and convenient max/min/average and data hold functions, the UT371 is ideal for technicians, engineers and maintenance professionals who need fast and dependable RPM readings. Specifications Specification Details Model Uni-T UT371 Measurement Range 10 to 99,999 RPM Range Selection 10-99 RPM / 100-999 RPM / 1000-9999 RPM / 10000-99999 RPM Accuracy 0.04% ± 2dgt Display 99999 count Target Distance 50mm to 200mm Start/Hold Start and stop measurement, data hold Max/Min/Avg/Zero Maximum value, minimum value, average value, zeroing Sleep Mode Approx. 15 minutes Low Battery Display 4.8V Power Supply 1.5V battery (AA) x 4 LCD Size 53 x 41mm Product Size 184 x 56 x 34mm Weight 100g Features & Benefits Wide RPM Measurement RangeMeasures from 10 to 99,999 RPM across four selectable ranges, covering everything from slow-moving machinery to high-speed rotating equipment. High AccuracyDelivers precise readings with an accuracy of 0.04% ± 2dgt, ensuring dependable results for critical rotational speed diagnostics. Non-Contact MeasurementMeasures RPM from a target distance of 50mm to 200mm without physical contact — safe for use on rotating shafts, motors and machinery. Max/Min/Average/Zero FunctionsCaptures maximum, minimum and average readings, plus zeroing function, supporting detailed analysis during inspections and troubleshooting. Start/Stop & Data HoldStart and stop measurement control combined with data hold function allows convenient capturing and recording of readings. Auto Sleep ModeAutomatically enters sleep mode after approximately 15 minutes of inactivity, helping to conserve battery life. Low Battery IndicationDisplays a low battery warning at 4.8V, alerting users before measurement accuracy is affected. Applications Motor and rotating equipment speed verification Industrial machinery maintenance and diagnostics Automotive engine and fan speed testing HVAC fan and blower speed measurement General mechanical and engineering RPM testing Why Choose Uni-T UT371? Wide 10 to 99,999 RPM measurement range High accuracy 0.04% ± 2dgt Non-contact measurement up to 200mm distance Max/min/average and zeroing functions Convenient start/stop and data hold control Auto sleep mode for battery conservation Trusted Uni-T instrument quality
