1. FEATURES
* Measuring RPM is safe & accurate without
attachment to object.
* Wide measuring range & high resolution.
* Digital display gives exact RPM with no
guessing or errors.
* Used the exclusive MICRO-COMPUTER LSIcircuit
and crystal time base to offer the high
accuracy measurement & fast measuring time.
* The last Value / max. Value / min. Value will
be automatically stored in memory and can be
displayed by turn.
* The use of durable, long-lasting components,
including a strong, light weight ABS-plastic
housing assures maintenance free performance
for many years. The housing has been carefully
shaped to fit comfortably in either hand.
2. SPECIFICATIONS
Display: 5 digits, 10 mm (0.4 ) LCD (Liquid
Crystal Display).
Test Range: 2.5 to 99,999 RPM (r/min)
Resolution: 0.1 RPM (2.5 to 999.9 RPM)
1 RPM (over 1,000 RPM )
Accuracy: (0.05%+1 rpm)
Sampling Time: 1 sec. (over 60 RPM)
Test Range Select: Automatic
Memory: Last Value, Max. Value, Min. Value.
Detecting Distance: 50 to 250mm / 2 to 10 inch
(typical max.350 mm /14 inch.
Depending upon ambient light).
Time Base: Quartz crystal
Circuit: Exclusive one-chip of
microcomputer LSI circuit.
Power Supply: 4x1.5VAA (UM-3) battery.
D.C Consumption: Approx. 80mA(operation).
Operation Temp. 0 to 50 (32 to 122 ).
Size: 190x72x37mm (7.5x2.8x1.5 inch)
Weight: about 300g/0.65 1b (including batteries)
Accessories:
Carrying case.................................. l pc.
Reflective tape marks (350mm).........2pc.
Operation manual.............................1pc.
3-5 Measure button
3-6 Memory button
3-7 Battery Compartment/Cover
4. MEASURING PROCEDURE
Apply a reflective mark to the object being
measured. Depress the MEASURE BUTTON
(Fig. 1,3-5) and align the visible light beam (Fig.
1,3-2) with the applied target, verify that the
MONITOR INDICATOR (Fig.1,3-3) lights when
the target aligns with the beam (about 1 to 2
seconds.)
5.MEASURING CONSIDERATIONS
5-1 REFLECTIVE MARK
Cut and peel adhesive tape provided into approx.
12mm (0.5 ) squ ares and app ly on e squ are to
each rotation shaft.
a. The non-reflective area must always be
greater than the reflective area.
b. If the shaft is normally reflective, it must be
covered with black tape or black paint before
attaching reflective tape.
c. Shaft surface must be clean and smooth
before applying reflective tape.
5-2 VERY LOW RPM MEASUREMENT
As it is easy to get high resolution and fast
sampling time, if measuring the very low RPM
values, suggest the user to attach more
REFLECTIVE MARKS averagely. Then
divided the reading shown by the number of
REFLECTIVE MARKS to get the real RPM.
5-3 BATTERY REMOVEMENT
If the instrument is not to be used for any
extended period, remove batteries.
6. MEMORY
6-1 A readout (the last Value, max. Value, min.
Value ) obtained immediately before turning off
the MEASURE BUTTON is automatically
memorized. For example, please ref. following
fig.2.
6-2 That Memorized value can be displayed on the
indicator by turn once depressing the memory
button. The Symbol UP represents the Max.
Value and dn the Min. Value; LA ,The last
Value.
7. BATTERY REPLACEMENT
(1)When it is necessary to replace the battery,
i.e. battery voltage less than approx. 5v,
symbol - + will appear on the
Display.
(2)Slide the battery cover (Fig.1,3-7) away
from the instrument and remove the
batteries.
(3)Install the batteries (4x1.5V AA/UM3)
correctly into the case.
VARNING:
DIRECT EYE EXPOSURE TO LASER LIGHT SOURCE
IS HARMFUL AND SHOULD BE PROHIBITERD
IN ANY CASE. ¡¡ |