SUNWE DT-2299 User manual

Battery power, LED array + photo tach.
STROBOSCOPE
Model : DT-2299
Your purchase of this STROBOSCOPE marks a step forward for
you into the field of precision measurement. Although this
METER is a complex and delicate instrument, its durable structure
developed. Please read the following instructions carefully and
always keep this manual within easy reach.
OPERATION MANUAL

Warning
Do not look directly at strobe/reflector.
Light pulses at the frequency greater than
5 Hz may cause photosensitvie epilepsy in
some individuals if directly viewed.
A feature of the instrument is to make
moving objects appear to be stationary.
Precaution should therefore be taken to
ensure that there is no physical contact
made with objects being viewed.

TABLE OF CONTENTS
1 FEATURES................................................................
.
1
2 SPECIFICATIONS......................................................
.
2
3 FRONT PANEL DESCRIPTION..................................... 5
3-1 Power On/Off Switch...........................................
.
7
3-2 DC9V Power Adapter Input Socket........................7
3-3 High, Low Range Switch......................................
.
7
3-4 Stroboscope, Ext. Trigger, Tachometer Switch.......7
3-5 Photo Tach, Contact Tach, ft/min.. m/min SW.......7
3-6 Coarse Adjust Knob.............................................
.
7
3-7 Fine Adjust Knob................................................. 7
3-8 Ext. Trigger Input Socket..................................... 7
3-9 Contact Tach. Probe Input Socket.........................7
3-10 Front Cover Screws............................................7
3-11 High Intensity LED array.................................... 7
3-12 Laser Light Beam for Photo Tachometer..............7
3-13 Sensing Sensor for Photo Tachometer.................7
3-14 Display..............................................................7
3-15 Target Indicator................................................
.
7
3-16 Handle..............................................................7
3-17 Battery Cover/Battery Compartment...................
.
7
4. STROBOSCOPE MEASURING PROCEDURES................
.
8
4-1 Preparation........................................................8
4-2 Checking Speed..................................................8
4-3 Checking Motion.................................................10
4-4 External trigger..................................................
.
10
5. LASER PHOTO TACHOMETER MEASURING
PROCEDURES...........................................................11
6. CONTACT TACHOMETER ( Optional probe )
MEASURING PROCEDURES.......................................
.
12
7. BATTERY REPLACEMENT...........................................14

1. FEATURES
* Combination Stroboscope with 3 functions :
Digital Stroboscope, Laser Photo Tachometer,
Contact Tachometer ( optional probe ), 3 in 1 ,
intelligent function.
* Battery power Stroboscope, use high intensity LED
array, long life.
* Stroboscope, wide measuring range up to 99,999 RPM.
* The Digital Stroboscope is used the microprocessor
circuit design, high accuracy, digital readout, light duty,
that is ideal for inspecting and measuring the speed of
moving gears, fans, centrifuges, pumps, motors and
other equipment used in general industrial
maintenance, production, quality control, laboratories
and as well as for schools and colleges for
demonstrating strobe action.
* Back light high visible LCD display gives exact reading
with no guessing or error and saves battery energy.
* High precision both for Stroboscope and Tachometer
measurement.
* Use an exclusive one chip MICRO-PROCESSOR
LSI-circuit and crystal time base to offer high accuracy
measurement & fast measuring time.
* Stroboscope build in external trigger input.
* Long distance Laser Photo Tachometer build in.
* Optional Contact Tachometer probe is available.
* Compact and heavy duty housing case.
1

2. SPECIFICATIONS
2-1 General Specifications
Display 5 digits ( 0 to 99999 ) LCD display.
Circuit Exclusive one-chip design microprocessor
LSI circuit.
Measurement Stroboscope
Unit : FPM ( rotation per minute ).
build in external trigger input.
Laser Photo Tachometer
Unit : RPM ( rotation per minute ).
Contact Tachometer
Unit : RPM ( rotation per minute ).
Surface speed ( ft/min., m/min )
* It should cooperate with optional
contact probe ( TA-35 ).
Sampling Time Approx. 1 second.
Calibration Crystal time base and microprocessor
circuit, no external calibration process
required.
Operating 0 to 50 ( 32 to 122 )℃℉
Temperature
Humidity Less than 80% R.H.
Power Supply DC 1.5 V, UM-1 (D type) battery x 4 PCs
* DC 9V adapter input is built, AC/DC
adapter is opional, not in included.
Power Stroboscope ( 3600 FPM ) :
Consumption DC 160 mA.
Laser photo Tachometer ( 3600 RPM ) :
DC 130 mA.
Weight 800 g ( 1.76 LB ).
Dimensions 21 cmx12 cmx12 cm (8.3"x4.8"x4.8").
2

Accessories Operation manual..........................
.
1 PC.
Included Reflective tape...............................1 PC.
Optional Contact Tachometer probe ( TA-35 ).
Accessories ACV 110V, 220/230V to DC 9V adapter.
2-2 Electrical Specifications of Stroboscope
Stroboscope 100 to 99,999 flashes per minute (FPM).
Flash Rate Low range : 100 to 1,000 RPM/FPM.
High range : 1000 to 99,999 RPM/FPM.
Accuracy ± ( 0.05% + 1 digit ).
Resolution 0.1 FPM/RPM (less than 1,000 FPM/RPM)
1 FPM/RPM ( > 1,000 FPM/RPM ).
External Input signal : 5V to 30 V rms,
Trigger 100 to 99,999 RPM/FPM.
Input
Light Source Long life high intensity LED array.
2-3 Electrical Specifications of Laser Photo
Tachometer
Range 10 to 99,999 RPM
Photo 50 - 1,500 mm typically.
Tachometer
* Spec. of detecting distance are that
detecting under the size of reflecting tape is 10
distance mm square & the measuring RPM
value is 1,800 PPM. The max. & min.
detecting distance may change under
different environment, different
reflecting tape or the measuring RPM
beyond 1800 PRM.
3

Accuracy ± ( 0.05% + 1 digit ).
Sampling Time 1 sec. ( 60 RPM ).
Resolution 0.1 RPM < 1,000 RPM
1 RPM 1,000 RPM≧
Time base Quartz crystal
Laser light * Less than 1 mW.
source * Class 2 laser diode. Red. Wave length
is 645 nm approximately.
2-4 Electrical Specifications of Contact
Tachometer ( Optional Probe, TA-35 )
Range Contact Tachometer :
0.5 to 19,999 RPM
Surface Speed ( m/min. ) :
0.05 to 1,999.9 m/min.
Surface Speed ( ft/min. ) :
0.2 to 6,560 ft/min.
Accuracy ± ( 0.05% + 1 digit ).
Sampling Time 1 sec. ( 6 RPM ).
Resolution 0.1 RPM < 1,000 RPM
1 RPM 1,000 RPM≧
0.01 m/min. < 100 m/min.
0.1 m/min. 100 m/min.≧
0.1 ft/min. < 1000 ft/min.
1 ft/min. 1,000 ft/min.≧
Accessories RPM adapter ( Cone type ).......... 1 PC.
Included RPM adapter ( Funnel type ).......
.
1 PC.
Surface speed test wheel............
.
1 PC.
Remark :
* Spec. tested under the environment RF Field Strength less
than 3 V/M & frequency less than the 30 MHz only.
4

3. FRONT PANEL & LAYOUT
DESCRIPTION
Fig. 1
5

Fig. 1
6

Fig. 1
3-1 Power On/Off Switch
3-2 DC 9V Power Adapter Input Socket
3-3 High, Low Range Switch
3-4 Stroboscope, Ext. Trigger, Tachometer Switch
3-5 Photo Tach, Contact Tach, ft/min.. m/min Switch
3-6 Coarse Adjust Knob
3-7 Fine Adjust Knob
3-8 Ext. Trigger Input Socket
3-9 Contact Tach. Probe Input Socket
3-10 Front Cover Screws
3-11 High Intensity LED array
3-12 Laser Light Beam for Photo Tachometer
3-13 Sensing Sensor for Photo Tachometer
3-14 Display
3-15 Target Indicator
3-16 Handle
3-17 Battery Cover/Battery Compartment
7

4. STROBOSCOPE MEASURING
PROCEDURES
4-1 Preparation
1)Install the batteries ( UM1/D type, 4 PCs ) into the
Battery Compartment ( 3-17, Fig. 1 )
* Please make attention the polarity of the battery.
2)Turn the power switch to " Power On/Off Switch "
( 3-1, Fig. 1 ) to the " On " position.
3)Select the " Stroboscope, Ext. Trigger, Tachometer
Switch " ( 3-4, Fig. 1 ) to the " Stroboscope " position.
4)Determine the range switch to "Low" or "High" position.
If the measured FPM ( flashes per minute ) is
< 1,000, then set the " Range Switch " to Low ( Lo )
position.
* If the measured FPM ( flashes per minute ) is
1,000, then set the " Range Switch " to High ( Hi )≧
position.
4-2 Checking Speed (RPM/FPM)
1)Power off the installation to be measured, make a
" mark " on the rotation area where it is intended to
measure the RPM. Then power on the installation to
be measured.
2)When checking the speed, care must be taken to
ensure that the strobe is flashing in unison ( one to
one ) with the object being monitored. Turn the "
Fine Adjust Knob " ( 3-7, Fig. 1 ) or " Coarse Adjust
Knob " ( 3-6, Fig. 1 ) until the mark look like " Stop "
( synchronize ). 8

Consideration :
* During the measurement, If the object mark look like
rotating as the counterclockwise direction, the
stroboscope's flash speed is higher than the object' s
RPM typically. It should decrease the Stroboscope's
FPM value will get synchronize ( mark stop ).
* During the measurement, If the object mark look like
rotating as the clockwise direction, the stroboscope's
flash speed is lower than the object's RPM. It should
increase the Stroboscope's FPM value will get
synchronize ( mark stop ).
* If intend to tune the stroboscopesingle to make the
synchronize ( mark stop ) with the object quickly, it
recommend to know the measured RPM
approximately at first, then tune the stroboscope
FPM start from the object RPM value nearly. For
example if the measured RPM is 1792 RPM, then
start the stroboscope's signal from the 1500 FPM.
For the unknown object's RPM, then start from the
lower FPM signal, increase the FPM value until the
object mark is synchronized.
3)The Stroboscope will also stop motion at 2:1, 3:1, 4:1 et.,
this is normally referred to as harmonics. To ensure
unison, turn the dial until two images appear - this will
double the actual speed. Then lower the flashing rate
until a single and stationary image appears - this is the
actual true speed.
9

4-3 Checking Motion
For motion analysis, simply locate the actual speed as
mentioned above and then turn the dial slowly up or down.
This will give a slow motion effect allowing complete
inspection.
4-4 External trigger
The stroboscope can accept the external trigger signal
instead of the internal trigger ( setting the value by knobs ).
1)Select the " Stroboscope, Ext. Trigger, Tachometer
Switch " ( 3-4, Fig. 1 ) to the " Ext. Trigger " position.
2)Connect the external signal to the " Ext. Trigger Input
Socket " ( 3-8, Fig. 1 ) via the earphone plug.
3)The display will show the value of the external trigger
signal in the same time the LED array ( 3-11, Fig. 1 )
will be flashed according the external trigger signal.
10

5. LASER PHOTO TACHOMETER
MEASURING PROCEDURES
1)Select the " Stroboscope, Ext. Trigger, Tachometer
Switch " ( 3-4, Fig. 1 ) to the " Tachometer " position.
2)Select The " Photo Tach, Contact Tach, ft/min., m/min
Switch " ( 3-5, Fig. 1 ) to the " Photo Tach " position.
3)Adhesive a reflecting mark to the object being measured.
Align the " Laser light beam " ( 3-12, Fig. 1 ) with the
applied target. Verify that the " Monitor Indicator "
( 3-15, Fig. 1 ) lights when the target pass through the
light beam.
Note :
If the measured RPM values is very low ( for example
less than 50 RPM ), recommend to attach more "
Reflecting Marks " average to the object. It will get the
real RPM with high resolution, precisely & fast
sampling time when divided the reading values by the
no. of the " Marks ".
Caution :
LASER RADIATION -
DO NOT STARE INTO
LASER BEAM
* Class II laser products.
11

6. CONTACT TACHOMETER
MEASURING PROCEDURES
1)Prepare a optional Contact Tachometer Probe
" Model : TA-35 ".
Th
RPM adapter ( Cone type )................... a
RPM adapter ( Funnel type ).................. b
Surface speed test wheel......................
.
c
2)Insert the output plug of the " Contact Tachometer
Probe " into " Contact Tach. Probe Input Socket " ( 3-9,
Fig. 1 )
3)Select the " Stroboscope, Ext. Trigger, Tachometer
Switch " ( 3-4, Fig. 1 ) to the " Tachometer " position.
12

Contact RPM measurement
4)Select The " Photo Tach, Contact Tach, ft/min., m/min
Switch " ( 3-5, Fig. 1 ) to the " Contact Tach " position.
5)Pressing the " RPM Adapter " lightly against the
center hole on the hole of the measured rotating axis.
Note :
Making the contact RPM measurement due to
different kind measured rotating axis, it may
changed the rubber for RPM adapter from " Cone "
type to " Funnel " type ( Refer page 12 ).
Surface Speed Measurement
1)Select The " Photo Tach, Contact Tach, ft/min., m/min
Switch " ( 3-5, Fig. 1 ) to the " m/min. " or " ft/min. "
position.
2)Change the " RPM Adapter " instead of the " Surface
Speed Test Wheel " ( Refer page 12 ).
3)Simply attaching the surface speed test wheel to the
detector.
13

7. BATTERY REPLACEMENT
1)When the LCD display ( 3-14, Fig. 1 ) show " LO ",
it is necessary to replace the battery. However,
in-spec measurement may still be made for several
hours after low battery indicator appears before the
instrument become inaccurate.
2)Open the " Battery Cover " ( 3-17, Fig. 1 ) away from
the instrument and remove the battery.
3)Install the 4 PCs batteries ( UM1/D type, Akaline or
heavy duty ) and replace the cover.
* When change batteries, it should make attention
the polarity of the battery.
14
0508-DT2299