butt on t o s et to 0 or 1. 0 represen ts disab ling LED laser a nd 1 for
enabling the las er.
Mod el UT 371 /UT 372 i s a sta ble , saf e and r eli abl e d igi tal n on - c ont act T ach ome ter .
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 for any missing or damaged part:
Description
English Operating Manual
Reflecting T ape
USB Interface Cable (UT372 only)
Software(UT372 only)
1.5V Battery (LR6)
Overview This Operating Manual covers safety information related to the Tachometer.
Please read the relevant information carefully and observe all the Warnings
and Notes strictly .
Item
1
2
3
4
5
Qty
1 piece
10 pieces
1piece
1 piece
4 pieces
Unpacking Inspection In the e vent y ou fin d any mi ssi ng or da mage d i tem , plea se con tac t your d eal er
imme dia tel y .
This Meter complies with IEC61010-031 and IEC61326 standards as well as
Pollution Degree 2 requirement
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 an d actions that po se hazards to
the user , or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention to.
Safety Information Do not point laser directly at eye.
Replace the battery as soon as the battery indicator
appears.
When the battery is between 4.5V ~4.8V , the battery indicator appears.
When the battery is between 4.3V ~ 4.5V , battery indicator blinking,
the Meter will be turned off after 1 minute.
When opening the battery door , make sure the Meter is powered off.
When servicing the Meter , use only the replacement parts with the
same model or identical electrical specifications.
The in ter nal ci rcu it o f t he Met er s ha ll n ot be a lt ere d at wi ll to a voi d
da ma ge o f th e Me t er a nd a ny a cc id en t .
Warnin g
Before usin g the Mete r ins pect the c ase. Do not u se th e Met er if it is
damage d or the cas e (or pa rt of the case) is remove d. Look for c racks or
mis sin g p lastic .
So ft c lo th a nd m i ld d et er ge nt s ho ul d b e us ed t o cl ea n th e s ur fa ce
of t he M et er w he n s er vi ci ng . No a br as iv e a nd s ol ve nt s ho ul d b e
us ed t o pr ev en t th e s ur fa ce o f th e Me t er f ro m co rr os io n, d a ma ge
an d ac ci de nt .
T u rn th e Me te r of f wh en i t i s no t in u se a nd ta ke o ut t he b at te ry
wh en n ot u si ng f or a lo ng t im e.
Cons tantl y chec k the batte ry as i t may leak w hen it has be en usi ng
for so me ti me , r ep lac e th e b at ter y as so on as le ak ing a pp ear s.
A lea ki ng ba tt ery w ill d am a ge t he M et er.
International Electrical Symbols Warning. Refer to the Operating Manual
Low Battery Indication
Conforms to Standards of European Union
Figure 1
The Meter Structure (See Figure 1)
T achometer Light Source.
LCD Display .
USB Port (UT372 only)
Housing
Functional Buttons
Functional Buttons The tabl e be low offe rs i nfor mati on ab out the func tion al b utto n op erati ons.
Button Operation Performed
Press once to turn the meter on.
Press and hold for 1 second to turn it off.
When measuring RPM and Counts, press once to enter the Hold mode. Press it
again to exit hold mode.
When measuring RPM and Counts, press it to toggle between RPM and Cou nts
feature.
Press and hold for 1 minute to enter setup feature, the LCD displays USB. After that,
each pressing steps through LED / SR / AOFF / CLK / settings, then exits the setup
and accesses RPM or Count, Y ou could press ON/OFF button to exit setup mode
and return to normal measurement mode at any time.
Press this button to choose Max./Min./Average/Zeroing/Setting options.
Under T ach measurement mode, press M/M/A button to select MAX/MIN/AVE and
normal measurements.
After enter ing USB/LED/SR/ AOFF/CLK mode, press this button t o set to 0/ 1 and
adj ust the time.
ON/OFF
R/C
M/M/A
Do not use or store t he Mete r i n an enviro nment of hi gh tempe ratu re,
humi dity , explosive, inflammable and strong magnetic field. The
performance of the Meter may deteriorate after dampened.
Setup A. USB
Pre ss R/C button to selec t USB f eat ure a fte r tur nin g on the Met er . Then press
M/M /A
button to set to 0 o r 1. 0 represen ts disab ling US B and 1 for enab ling USB .
B. LED
Pre ss R/C b utton to s elec t LED feat ure after turn ing on t he Me ter . Then pre ss
M/M /A
C. SR (Sampling Rate)
Press R/C button to select SR feature afte r turn ing on the Mete r . Th en pre ss
M/M/A
button t o adjust within 00 5 ~ 255. Press an d hold M/M /A button to
D. AOFF
Pres s R/ C bu tton to s elec t AOF F fe atur e af ter turn ing on t he Me ter. Then
M/M/A pres s button to set to 0 or 1. 0 represents disabling auto power off and
1 for enabling the function.
With the functio n enabl ed, the meter wi ll auto mati call y power off if butt ons are
inac tive for 10m inutes. Pre ss O N/OFF ag ain to wake up the mete r.
E. CLK
Pres s R /C butt on t o selec t C LK featu re afte r t urnin g on t he Meter . Then pre ss
M/M/ A
button to set to 0 or 1. 0 is for h:m time format and 1 for m:s format.
Display Symbols (see figure 2) Figure 2
1
2
3
4
5
6
7
8
9
10
1 1
12
Unit of T achometer
Unit of Counts
Time
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
Number Meaning
access q uick sett ing.
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