INSTRUCTION MANUAL
HOTO
INSTRUMENTS
®
LED Stroboscope
Model ESL-200
LIMITED WARRANTY
ONE-YEAR LIMITED WARRANTY AND LIMITATION OF LIABILITY: Hoto Instruments, for itself and
its related companies (hereinafter described collectively as “Hoto Instruments”) warrants that all Hoto
Instruments products sold will be free of defects in materials and workmanship for a period of one (1)
year from date of delivery to end-user. The foregoing one (1) year warranty shall not be extended or
changed by Hoto Instruments furnishing any replacements, additions, attachments, adapters, batteries,
cables, accessories or repairs to the products subsequent to the date of delivery or acceptance. The foregoing warranty is the sole and exclusive warranty of Hoto Instruments regarding the products.
DISCLAIMER OF OTHER WARRANTIES: Other than the foregoing warranties, there are no express or
implied warranties or any affirmations of fact or promises by Hoto Instruments with respect to the products. Hoto Instruments disclaims any warranties, express, implied or statutory, not specifically set forth
above, including any implied warranties of merchantability and fitness for any particular purpose..
LIMITATION OF LIABILITY AND REMEDIES: Hoto Instruments' sole responsibility and liability
incurred as a result of the sale and/or use of the products, and the purchaser’s exclusive remedy against
Hoto Instruments under any warranty shall be limited to the repair or replacement, at Hoto Instruments’
option, of product components not conforming to the warranty.
PURCHASER'S DAMAGES AND LIMITATIONS: In no event shall Hoto Instruments be liable to purchaser, its assigns or agents, for economic loss, incidental or consequential damages, in contract or in tort,
including but not limited to, any damages for lost profits, down-time, lost production, failure to meet purchaser’s sales contracts, or defects in purchaser’s material or workmanship. Hoto Instruments’ limited
warranty is terminated in the event of product overload, shock load, misuse, negligence, accident, or if
repairs are attempted by the customer or third-parties without notice to and authorization by Hoto
Instruments.
INSTRUCTIONS FOR OBTAINING WARRANTY REPAIR OR REPLACEMENT: Please contact our customer service department for a return authorization number. After you have obtained the authorization
number, please return the subject product to Hoto Instruments with all freight, duty and brokerage costs
prepaid.
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Specifications
Range Resolution
12.0 – 9999.9 fpm/rpm ±0.1 fpm/rpm
10000 – 150000 fpm/rpm ±1 fpm/rpm Display flashes over 100000 rpm
Selectable Units: FPM or Hz
Accuracy ±0.01%, ±1 LSD
Power NiMH rechargeable battery
Display 12mm, 5 digit LCD
Tripod Thread ¼ - 20 UNC
Operating Temperature 0 – 45°C
Storage Temperature -10 – 50°C
Weight 1.2 lb/540 g
Dimensions
LED Stroboscope Model ESL-200
Introduction
Model ESL-200 is an enhanced LED, battery operated, stroboscope
designed to measure and observe rotating, reciprocating and linear
motion in a large variety of production, quality control and academic
applications.
●
High efficiency LED solid-state light source – never needs
replacement
●
Extended battery life of 6 hours continuous use at 6,000 fpm/rpm
●
Highly stable drift free operation
●
Auto wide measuring range – up to 150,000 fpm/rpm
●
Push button operation with x2 and ÷2 buttons for quick adjustment
●
Store up to 9 flash rates in memory for records or quick retests
●
Rugged aluminum housing – compact size
●
Easy-to-read 5 digit 0.47" (12 mm) high LCD
Important
Do not look directly at the emitted light.
Instrument is fragile – handle with care.
Do not operate instrument in a humid or dusty environment.
To clean, wipe surface with a damp, soapy cloth. Avoid harsh chemicals.
List of Equipment
ESL-200 LED Stroboscope
Carrying case
AC Adapter/Charger
1
2
3
1
2 3
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FLASH DURATION
Changing Flash Duration
(increasing sharpness)
Flash duration is set at F0, which is suitable
for most applications. However, images can
be sharpened by decreasing flash duration.
After synchronizing the flash rate with the
moving object, press and hold the
MODE key,
then press the ▲ or ▼ arrows to select levels
F0, F1, F2, ... F9. As flash duration shortens
the image gets sharper and less bright. Longer
flash durations are brighter and less sharp.
The display is retained for two minutes after the strobe is powered off. If
turned back on while the display is on, the strobe returns to the flash rate
shown on the display. The strobe powers off after five minutes of non-use.
Changing Default Flash Duration
F0 is the default, good for most applications.
To change, turn off the strobe. Press and hold
the
MODE key, then press the power switch .
SEL is displayed, then press the ▲ or ▼
arrows to select F0, F1, F2, ... F9. The selected
flash duration level becomes the default when
the strobe is powered on. Press to exit.
RECHARGING THE BATTERY
IMPORTANT!
Use the provided HOTO AC
adapter/ charger exclusively and plug into the
correct AC output; others will cause damage.
When the Battery icon appears on the display,
turn off the unit and connect to the AC
adapter/charger. The indicator light near the
On/Off button will flash and turn solid as the unit is charged. The
indicator will go off when the strobe is fully charged.
3000.0
FPM
LOW BATT
F0
3000.0
FPM
F0
SELECT WITH UP/DOWN ARROWS
F0-F1 ...F9
–SEL–
FPM
F0
SELECT WITH UP/DOWN ARROWS
F0-F1 ...F9
UNITS
FPM = FLASHES PER MINUTE
HZ = FLASHES PER SECOND
MEMORY ICON
INDICATES IF CURRENT
FLASH RATE IS ALREADY
STORED IN MEMORY
LOW BATTERY ICON
FLASH DURATION LEVEL
F0~F9 (F0 DEFAULT)
MEMORY LOCATIONS
1~9 FOR BOTH FPM AND HZ
DISPLAY
LED INDICATOR
POWER SWITCH
●
CLICK AND RELEASE TO TURN ON,
CLICK TO TURN OFF. AUTO SHUT OFF
AFTER 10 MINUTES
AC ADAPTER/CHARGER PORT
MEMORY KEY
MODE KEY
●
PHASE SHIFT
●
PROGRAMMING
PHASE SHIFT
●
PHASE SHIFT ROTATION
●
PROGRAMMING
1
8
2
7
UP/DOWN ARROW KEYS ▲ OR ▼
●
CHANGE FLASH RATE
●
CHANGE FLASH DURATION LEVEL
●
SELECT PROGRAM OPTIONS
X2/÷2 KEYS
●
DOUBLE OR HALVE THE FLASH RATE
LEFT/RIGHT ARROW KEYS OR
●
SELECT PROGRAM OPTIONS
▲
▲
3
6
4
5
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MEMORY (FPM and Hz units each have nine separate memory locations)
Saving Flash Rates in Memory
Turn on the strobe and synchronize the
flash rate with the moving object. Press and
hold
MODE, then press MEMORY, a memory
location number appears briefly and the
flash rate is saved to that memory location.
When nine locations have been saved FUL appears on the display.
Memory Recall
Turn on the strobe. Press MEMORY to enter
memory mode and memory location ‘1’
appears at the top of the display. Press
MEMORY
again to select another location. If no flash
rates are stored, numbers do not appear.
Changing Memory Values
Select a memory location (see Memory Recall above). The memory icon
indicates the stored flash rate matches the current flash rate. Use the
arrow keys to change the flash rate (the memory icon disappears). To
save the new flash rate, press and hold MODE, then press MEMORY. The
memory icon reappears and shows that the current flash rate is stored.
Clearing All Memory
Turn off the strobe. Press and hold the MODE
key, and then press the power switch . SEL
is displayed. Press and hold
MODE, then press
MEMORY to display CLr. Press MEMORY again
and stored memory is cleared (CLr disappears
in three seconds). After memory is cleared
the strobe returns to default measuring mode
(3,000 FPM).
MEASURING
1. Visually note a unique feature on the
object to be measured or physically
mark it with reflective tape or chalk.
2. Press to turn on the strobe. The
LED indicator blinks and the strobe
flashes at 3,000 FPM factory default
or previous power down value.
3. Set flash rate to maximum and aim
at the object. Press the ▼ arrow until
the object appears frozen. To find true
rpm, press the ÷2 button, ▲ or ▼
arrows, to adjust the flash rate until
the first time a single mark appears.
The flash rate changes more rapidly the longer the ▲ or ▼ arrow key is
held, then resets 1.5 seconds after it is released.
Advanced users: After releasing the ▲ or ▼ arrow, the numeric place of
the flashing digit indicates the rate of change. While the digit is flashing,
press the or arrows to move the numeric place of the flashing digit
higher or lower. Then press the ▲ or ▼ arrow to change the flash rate
using that increment.
4. Press to turn off the strobe (the display remains for two more
minutes). The strobe shuts off automatically after 10 minutes.
▲
▲
–FUL–
FPM
F0
3000.0
FPM
1
MEMORY
ICON
1-2-3 ...9
–CL6–
FPM
F0
PREPARATION
Changing Units
(FPM is the factory default)
Turn off the strobe (the strobe light goes off
and the display stays on for two more minutes).
Press and hold
MODE, then press the power
switch and SEL is displayed. Press the or
arrows to select FPM or Hz. The selected
unit becomes the default when the strobe is
powered on. Press the power switch to exit.
▲
▲
–SEL–
FPM
F0
–SEL–
FPM
F0
NOTE: IF THE FLASH RATE
IS 1/2 OF TRUE RPM, 1/3,
1/4, ETC., A SINGLE MARK
ALSO APPEARS.
IF THE FLASH RATE IS 2X
TRUE RPM, TWO MARKS
APPEAR, 3X TRUE RPM,
THREE MARKS, 4X, FOUR
MARKS, ETC.
IF THE FLASH RATE IS 2/3
OF TRUE RPM, 2/5, 2/7
ETC., TWO MARKS
APPEAR. AND 4/3, 4/5
AND 4/7 FOUR MARKS
APPEAR, ETC.
PRESS MEMORY TO CHANGE LOCATION
PRESS MEMORY TO CLEAR
PRESS AND HOLD MODE, THEN
PRESS MEMORY TO DISPLAY CLR
FPM, FLASHES PER MINUTE IS BEST
FOR MOST APPLICATIONS. HZ IS
FLASHES PER SECOND. SELECT
WITH LEFT/RIGHT ARROWS
Digital Phase Shift
(image rotation)
After synchronizing the flash rate with the moving object, press – or +
to adjust the angle. When the strobe is turned off, the phase shift resets
to zero.
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