Instruction/ maintenance manual of the product UT371 Uni-T
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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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 Mi.
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.
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.
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.
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.
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.
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.
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.
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.
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.
* 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, .
An important point after buying a device Uni-T UT371 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Uni-T UT371 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Uni-T UT371 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Uni-T UT371 you will learn all the available features of the product, as well as information on its operation. The information that you get Uni-T UT371 will certainly help you make a decision on the purchase.
If you already are a holder of Uni-T UT371, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Uni-T UT371.
However, one of the most important roles played by the user manual is to help in solving problems with Uni-T UT371. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Uni-T UT371 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
