Model UT371/372 OPERATING MANUAL
Model UT371/372: OPERATING MANUAL TABLE OF CONTENTS TITLE Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Functional Buttons Setup Display Symbols Measurement Operation A. RPM Measurement B. Counts C.
Model UT371/372: OPERATING MANUAL TABLE OF CONTENTS TITLE Specifications A. General Specifications B. Environmental Requirements Accuracy Specifications A. RPM B. Counts Maintenance A. General Service B.
Model UT371/372: OPERATING MANUAL Overview This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly. Model UT371 and UT372 is a stable, safe and reliable digital non-contact Tachometer. This Tachometer can measure RPM and counts. RPM range is 10 ~ 99999 while counts range is 0 ~ 99999. Unpacking Inspection Open the package case and take out the Meter.
Model UT371/372: OPERATING MANUAL In the event you find any missing or damage, please contact your dealer immediately. Safety Information This Meter complies with the standards IEC61010-031, IEC61326, : in pollution degree 2 Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired. In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment under test.
Model UT371/372: OPERATING MANUAL Rules For Safe Operation Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Do not use or store the Meter in an environment of high temperature, humidity, explosive, inflammable and strong magnetic field. The performance of the Meter may deteriorate after dampened. Do not point laser directly at eye. Replace the battery as soon as the battery indicator appears.
Model UT371/372: OPERATING MANUAL Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing. No abrasive and solvent should be used to prevent the surface of the Meter from corrosion, damage and accident. Turn the Meter off when it is not in use and take out the battery when not using for a long time. Constantly check the battery as it may leak when it has been using for some time, replace the battery as soon as leaking appears. A leaking battery will damage the Meter.
Model UT371/372: OPERATING MANUAL The Meter Structure (see figure 1) Tachometer Light Source. LCD Display.
Model UT371/372: OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations. Button ON/OFF R/C Operation Performed l Press once to turn the meter on. l Press and hold for 1 minute to turn it off. l When measuring RPM and Counts, press once to enter the Hold mode. Press it again to exit hold mode. l When measuring RPM and Counts, press it to toggle between RPM and Counts feature.
Model UT371/372: OPERATING MANUAL Setup A. USB setup Press R/C button to select USB feature after turning on the Meter. Then press M/M/A button to setup 0 or 1. 0 means turn the USB off. 1 means enable the USB feature. B. LED setup Press R/C button to select LED feature after turning on the Meter. Then press M/M/A button to setup 0 or 1. 0 means turn the LED laser off. 1 means enable the LED laser feature. C. SR sampling rate setup Press R/C button to select SR feature after turning on the Meter.
Model UT371/372: OPERATING MANUAL if you do not press any button for 10 minutes. You could press ON/OFF button to turn on the Meter again after the Meter is off. E. CLK setup Press R/C button to select CLK feature after turning on the Meter. Then press M/M/A button to setup 0 or 1. 0 is hours and minutes format. 1 is minutes and seconds format.
Model UT371/372: OPERATING MANUAL Display Symbols (see figure 2) Figure 2 11
Model UT371/372: OPERATING MANUAL Number 12 Meaning 1 Unit of Tachometer 2 Unit of Counts 3 Time 4 The battery is low.
Model UT371/372: OPERATING MANUAL Measurement Operation Wa r n i n g l To reserve battery, the USB feature will be automatically off when the Meter is restarted. The other setting remains unchanged. l The Time will be off after the HOLD feature is enabled. The time will be on again after existing HOLD mode. A. RPM Measurement (see figure 3) Warning l Do not point laser directly at eye. l When carrying out measurement, the distance must be more than 50mm.
Model UT371/372: OPERATING MANUAL To carry out RPM measuremnet, follow the following procedure: 1. Apply a piece of reflecting tape to the object under test. 2. Position the Meter on a flat place. Hold the Meter 50~200mm from the Tachometer light source to the object under test. 3. Press ON/OFF button, the Meter is default to enter the RPM measurement mode. Point the Tachometer light source to reflective tape, the vertical angle of the reflecting tape is not greater than 30°. 4.
Model UT371/372: OPERATING MANUAL B. Counts Self-lighted Counts (see figure 4) 1. Position the Meter on a flat place. Hold the Meter 50~200mm and at the vertical angel not greater than 30° from the Tachometer light source to the object under test. 2. Press the ON/OFF button 3. Press the R/C button to select Count mode. 4. Point he Tachometer light source to the object under count 5. The LED scans the object under count, the Meter accumulates the counts and displays the quantity. Note: 1.
Model UT371/372: OPERATING MANUAL Receiving Light Source Outside (see figure 5) 1. Position the Meter on a flat place. Hold the Meter 50~200mm and at the vertical angel not greater than 30° from the Tachometer light source to the object under test. 2. Set up the Meter, object under counts and outside light source as figure 5 3. Press ON/OFF button 4. Turn the LED off, refer to page 9 point B. 5. Then press R/C button to select Counts mode. 6.
Model UT371/372: OPERATING MANUAL C. Data Transferring and USB (UT372 only, see figure 6) Connect the USB interface cable, the Meter and the computer as per the figure 6.
Model UT371/372: OPERATING MANUAL Specifications A. General Specifications l Display: 5 digits LCD display, Maximum display 99999. l Overloading: Display OL. l Battery Deficiency: Display . l Sampling Rate: 5 mini-second to 255 mini seconds adjustable. l Transducer Tyype: Photo Diode and Laser l Measurement Distance: 50mm ~ 200mm l Drop Test: one meter l Power: 4pcs x 1.
Model UT371/372: OPERATING MANUAL B. Environmental Requirements l For indoor use only. l Altitude: 2000m l Temperature and humidity: Ø Operating: o o 0 C~30 C( 85%R.H) o o 30 C~40 C ( 75%R.H) o o 40 C~50 C ( 45%R.H) Ø Storage: o o -20 C~ +60 C( 85%R.H) l Safety/ Compliances: IEC61010-031, IEC61326, IEC 61010-1 pollution degree 2.
Model UT371/372: OPERATING MANUAL Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. o o Operating temperature: 23 C 5 C Operating humidity: 80%RH o Temperature Coefficient: 0.1 x (accuracy) / C A. RPM Range 10~99.999 r/min 100~999.99 r/min 1000~9999.9 r/min 10000~99999 r/min Resolution 0.001 r/min 0.01 r/min 0.1 r/min 1 r/min Accuracy (0.04%+2) B.
Model UT371/372: OPERATING MANUAL MAINTENANCE This section provides basic maintenance information including battery replacement instruction. Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. Do not attempt to open the back housing to avoid damaging to the Meter or affecting accuracy. A. General Service l Periodically wipe the case with a damp cloth and mild detergent.
Model UT371/372: OPERATING MANUAL B. Replacing the Battery (see figure 7) 1. Press ON/OFF to turn the Meter off. 2. Turn the Meter’s front case down. 3. Remove the screw from the battery door, and separate the battery door from the case bottom. 4. Take out the old battery and replace with 4 x 1.5V battery (AA). 5. Rejoin the case bottom and the battery compartment, and reinstall the screw.
Model UT371/372: OPERATING MANUAL * END * This operating manual is subject to change without notice.
Model UT371/372: OPERATING MANUAL Copyright 2007 Uni-Trend Group Limited. All rights reserved. Manufacturer: Uni-Trend Technology (Dongguan) Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town, Dongguan City Guang Dong Province China Postal Code: 523 925 Headquarters: Uni-Trend Group Limited Rm901, 9/F, Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon, Hong Kong Tel: (852) 2950 9168 Fax: (852) 2950 9303 Email: info@uni-trend.com http://www.uni-trend.
