Uni-T UT371 manual

M odel UT371/372 OPERA TI NG M ANUAL[...]

T ABLE OF CONTENTS TITLE P AGE 3 3 4 5 6 7 8 9 1 1 13 13 15 17 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. Data T ransferring and USB Model UT371/372: OPERA TING MANUAL 1[...]

T ABLE OF CONTENTS TITLE P AGE 18 18 19 20 20 20 21 21 22 Specifications A. General Specifications B. Environmental Requirements Accuracy Specifications A. RPM B. Counts Maintenance A. General Service B. Replacing the Battery Model UT371/372: OPERA TING MANUAL 2[...]

Model UT371 and UT372 is a stable, safe and reliable digital non-contact T achometer . This T achometer can measure RPM and counts. RPM range is 10 ~ 99999 while counts range is 0 ~ 99999. Open the package case and take out the Meter . Check the following items carefully to see any missing or damaged part: Description English Operating Manual Refle[...]

In the event you find any missing or damage, please contact your dealer immediately . 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 W arning identifies conditions and ac[...]

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 d[...]

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. T urn 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 [...]

Figure 1 The Meter Structure (see figure 1) T achometer Light Source. LCD Display . USB Port (UT372 only) Housing Functional Buttons Model UT371/372: OPERA TING MANUAL 7[...]

Functional Buttons Below table indicated for information about the functional button operations. Button 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 t[...]

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 en[...]

if you do not press any button for 10 minutes. Y ou 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: OPERA TING MANUAL [...]

Display Symbols (see figure 2) Figure 2 Model UT371/372: OPERA TING MANUAL 1 1[...]

1 2 3 4 5 6 7 8 9 10 1 1 12 Unit of T achometer Unit of Counts T ime The battery is low . Indicator of Sleep Mode Measurement of RPM and Counts Data Hold is on Display of Maximum reading Display of Minimum reading Display of Average reading USB is on Display of Measurement reading l Number Meaning Model UT371/372: OPERA TING MANUAL 12[...]

W arning W arning T o reserve battery , the USB feature will be automatically off when the Meter is restarted. The other setting remains unchanged. The Time will be off after the HOLD feature is enabled. The time will be on again after existing HOLD mode. l l A. RPM Measurement (see figure 3) l Do not point laser directly at eye. l When carrying ou[...]

Figure 3 T o carry out RPM measuremnet, follow the following procedure: Apply a piece of reflecting tape to the object under test. Position the Meter on a flat place. Hold the Meter 50~200mm from the T achometer light source to the object under test. Press ON/OFF button, the Meter is default to enter the RPM measurement mode. Point the T achometer [...]

Figure 4 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 T achometer 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 T achometer light source to the object u[...]

Receiving Light Source Outside (see figure 5) Figure 5 Position the Meter on a flat place. Hold the Meter 50~200mm and at the vertical angel not greater than 30° from the T achometer light source to the object under test. Set up the Meter , object under counts and outside light source as figure 5 Press ON/OFF button T urn the LED off, refer to pag[...]

Figure 6 C. Data T ransferring 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: OPERA TING MANUAL 17[...]

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 T ransducer T yype: Photo Diode and Laser l Measurement Distance: 50mm ~ 200mm l Drop T est: one meter l Power: 4pcs x 1.5V batteries (AA) l D[...]

B. Environmental Requirements l For indoor use only . l Altitude: 2000m l T emperature and humidity: Ø Operating: 0 o C~30 o C( 85%R.H) 30 o C~40 o C ( 75%R.H) 40 o C~50 o C ( 45%R.H) Ø Storage: -20 o C~ +60 o C( 85%R.H) l Safety/ Compliances: IEC61010-031, IEC61326, IEC 61010-1 pollution degree 2. l Certification: Model UT371/372: OPERA TING MAN[...]

Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year . Operating temperature: 23 o C 5 o C Operating humidity: 80%RH T emperature Coefficient: 0.1 x (accuracy) / o C Range Resolution Accuracy 10~99.999 r/min 100~999.99 r/min 1000~9999.9 r/min 10000~99999 r/min 0.001 r/min 0.01 r/min 0.1 r/min 1 r/min (0.04%+2) A. RPM B. C[...]

MAINTENANCE This section provides basic maintenance information including battery replacement instruction. W arning 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 a[...]

B. Replacing the Battery (see figure 7) Figure 7 1. Press ON/OFF to turn the Meter off. 2. T urn the Meter’s front case down. 3. Remove the screw from the battery door , and separate the battery door from the case bottom. 4. T ake out the old battery and replace with 4 x 1.5V battery (AA). 5. Rejoin the case bottom and the battery compartment, an[...]

* END * This operating manual is subject to change without notice. Model UT371/372: OPERA TING MANUAL 23[...]

Copyright 2007 Uni-T rend Group Limited. All rights reserved. Manufacturer: Uni-T rend T echnology (Dongguan) Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men T own, Dongguan City Guang Dong Province China Postal Code: 523 925 Headquarters: Uni-T rend Group Limited Rm901, 9/F , Nanyang Plaza 57 Hung T o Road Kwun T[...]