PLS manual rev 1.3.indd
Contents
1. Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 10 The Pocket LED Strobe contains Lithium lon batteries which must be disposed of in accordance with Federal State amp Local Regulations Do not incinerate Batteries should be shipped to a reclamation facility for recovery of the metal and plastic components as the proper method of waste management Contact distributor for appropriate product return procedures 11 This instrument may not be safe for use in certain hazardous environments and serious personal injury or death could occur as a result of improper use Please refer to your facility s safety program for proper precautions In order to comply with EU Directive 2002 96 EC on Waste Electrical and Electronic Equipment WEEE This product may contain material which could be hazardous to human health and the environment DO NOT DISPOSE of this product as unsorted municipal waste This product needs to be RECYCLED in Wagen accordance with local regulations contact your local authorities for more information This product may be returnable to your distributor for recycling contact the distributor for details Monarch Instrument s Limited Warranty applies See www monarchinstrument com for details Warranty Registration and Extended Warranty coverage available online at www monarchinstrument com Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 TABLE OF CONTENTS 1 0 2 0 3 02. 4 0 5 0 6 0 7 0 OVERVIEW erra e ea a e aa a AREEN EE A AEs INER 1 1 4 Modes of Operation 1 1 1 Internal Mode esent 1 1 2 External Mode seen 1 1 3 Charging Mode 12 Brightness rere nentes 1 2 1 Degree of Rotation Adjustment 4 1 2 2 Pulse Duration Adjustment 5 PREPARATION FOR USE neni iu Lenta hn air ieri 5 AM 071 M 5 2 2 Input Output Connectors eee 6 LED STROBE OPERATION eere 3 4 Adjusting the Flash Rate RPM m 3 2 Multiply or Divide By 2 eene 3 39 Menu Options eiii ette eteece rete nite rele ra 3 3 1 3 3 2 3 3 3 3 3 4 3 3 5 3 3 6 BKLIT Backlight eren 3 3 7 DECPT Decimal Point 3 3 8 INPUT Input Pulse Polarity 12 USING THE STROBOSCOPE TO MEASURE RPM 13 BATTERIES eisie enaere 5 1 Low Battery Indication 5 2 Charging the Batteries 5 3 Battery Disposal enne SPECIFICATIONS esses eene enne nnns nnn nnne 17 OPTIONS AND ACCESSORIES SENSORS 19 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 1 0 OVERVIEW The Pocket LED Strobe P
3. MONARCH INSTRUMENT Instruction Manual Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 Pocket LED Strobe Portable LED Stroboscope 15 Columbia Drive Amherst NH 03031 USA Phone 603 883 3390 Fax 603 886 3300 E mail support monarchinstrument com Website www monarchinstrument com A Safeguards and Precautions A 1 Read and follow all instructions in this manual carefully and retain this manual for future reference 2 Do not use this instrument in any manner inconsistent with these operating instructions or under any conditions that exceed the environmental specifications stated 3 Certain strobe frequencies can trigger epileptic seizures in those prone to that type of attack 4 Users should not stare directly at the light source 5 Prolongedexposure tothe light can cause headaches in some people 6 Objects viewed with this product may appear to be stationary when in fact they are moving at high speeds Always keep a safe distance from moving machinery and do not touch the target 7 Thereare no user serviceable parts in this instrument Refer service to a qualified technician 8 Do not allow liquids or metallic objects to enter the stroboscope as this may cause permanent damage and void the warranty 9 Donotallow cables extending from unit to come into contact with rotating machinery as serious damage to the equipment or severe personal injury or death may occur as a result
4. 5524 6 0 Specifications Internal Mode Flash Range Flash Rate Accuracy Flash Rate Resolution Display Update Rate External Modes Flash Range Tachometer Mode Accuracy Display Update Rate Trigger to Flash Delay External Input 30 to 300 000 FPM Flashes Per Minute 0 5 to 5000Hz 0 005 of setting or last digit 0 01 to 1 FPM menu selectable 0 1 FPM resolution above 9 999 99 FPM 1 FPM resolution above 99 999 9 Instantaneous 0 to 300 000 FPM Flashes Per Minute 0 to 5000Hz 30 to 300 000 RPM 0 005 of reading up to 250 000 or last digit 0 5 second typical above 120 RPM 15 usec 2 5V to 12V peak pulse 500 nanosec min pulse width Positive or Negative edge triggered menu selectable Output Pulse 3V pulse One pulse per flash in internal mode Mimics input pulse in external mode Pulse In to Out Delay lt 0 2 usec External Mode Time Base Ultra Stable Crystal Oscillator Display LCD display with 6 numeric 0 506 inch 12 85 mm high digits and 5 alphanumeric 0 282 inch 7 17 mm high digits Indicators Low Battery On Target Select TACH and EXT icons Memory Last setting before power down is remembered and restored on next power up 5 user settable memory locations 17 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 Flash Duration Input Power Light Output Run Time Charge Time Weight Adjustable 0 5 to 2500 microseconds or 1 to 18 degrees of rotation auto adj
5. The trade off is blur versus brightness One also has to take into account tangential velocity rotational speed the further away the rotating point is from the center axis the faster the tangential velocity and the worse the blur appears to be it is always the same number of degrees of rotation but the physical length of the blur gets bigger as the point moves faster The strobe adjusts the width ofthe pulse automatically to keep the degree of rotation visible constant There are two methods of adjusting the flash pulse width and hence the brightness and consequently the blur 1 2 1 Degree of Rotation Adjustment The first method is to adjust the flash pulse width for degree of rotation visible blur The user can set this from 0 1 to 18 degrees out of 360 The higher the setting the brighter the strobe appears to be but the more blurred the target is Optimal setting to stop motion is 1 to 3 6 The number of degrees is a proportional amount Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 2 0 and remains constant as the flash rate increases or decreases The strobe automatically calculates how wide the pulse width should be at different flash rates to keep the blur constant the faster the flash rate the narrower the pulse width The pulse width equals setting in degrees 360 x 1 flash rate in Hz Thus the blur remains constant no matter what the flash rate 1 2 2 Pulse Duration Adjustment The s
6. for inspection or to measure RPM 14 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 5 0 BATTERIES The Pocket LED Strobe is fitted with a rechargeable Lithium Ion battery pack These batteries are prone to self discharge over time For maximum performance charge the batteries prior to use and do not store in hot loca tions The strobe uses an external charger Allow 3 5 cycles of charging and discharging for batteries to reach full capacity When not in use the batteries should be charged at least every three months otherwise the battery capacity will be reduced or the batteries may become unusable The enclosure contains control electronics to properly protect and safely charge the batteries Never remove the batteries from the enclosure and attempt to charge externally Always use the charger supplied LBC U 5 1 Low Battery Indication When the batteries are charged there will be no battery icon indication When the batteries are low the Low Battery icon will appear in the display The strobe may still be used for a short time Low Battery Icon Outline blinking very little time left The strobe has a protection feature that prevents the strobe from operating if the battery voltage is too low This condition is indicated by no flash and the display shows LO BAT At this time the batteries must be recharged 5 2 Charging the Batteries The unit may be recharged at any time You do not need to wait
7. LS is a rugged portable battery powered LED Light Emitting Diode stroboscope used for inspection and to stop motion to determine the speed of rotating objects The unit is ergonomically designed for comfortable hand held operation or it may be mounted on a tripod using the integral 1 4 20 UNC bushing on the underside of the unit Charger Jack Battery Cover Figure 1 1 Pocket LED Strobe The Pocket LED Strobe has a two line backlit alpha numeric liquid crystal display LCD and a four key keypad that enables the user to control the operation of the unit The LCD display has several icons which will be explained later in this manual Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 1 BOOBDUH EXT NANANANA NA ERES NLM o4 MENU gt Figure 1 2 Pocket LED Strobe Control Panel 1 1 Modes of Operation The stroboscope has two basic modes of operation INTERNAL and EXTERNAL The unit does not operate when in the Charging Mode 1 1 1 Internal Mode The strobe is in the Internal Mode when nothing is plugged into the input jack In the internal mode the strobe generates its own timing signals and the user can adjust the flash rate see Section 3 1 1 1 2 External Mode In the External Input Mode the user can t make any flash rate adjustments The flash rate is a function of the input signal This mode is used to synchronize the flash to an external event for example from a
8. OOOOSE Stopped Image 1 4 times 1 2 times 1 time 2 times 3 times 4 times Flash Rate FPM 1250 2500 5000 10000 15000 20000 Example Object rotating at 3000 RPM If the speed is outside the full scale range of the stroboscope 300 000 FPM it can be measured using the method of harmonics and multipoint calculation Start at the highest flash rate and adjust the flash rate down You will encounter multiple images so be aware of these Note the flash rate of the first SINGLE image you encounter call this speed A Continue decreasing the flash rate until you encounter a second SINGLE image Note this speed as B Continue decreasing the speed until you reach a third SINGLE image at speed C For a two point calculation the actual speed is given by RPM AB A B For a three point calculation RPM 2XY X Y X Y 2 where X A B and Y B C Ifa Remote Optical Sensor or Magnetic Sensor is used to sense one pulse per revolution External mode the readout will display directly in RPM FPM without any adjustment required In instances when you can shut down the device and install a piece ofreflective tape then an optical tachometer is easier to use for RPM measurement Stroboscopes must be used when you can t shut down the device The human eye is not easily tricked into seeing a stopped image by a stroboscope when the flash rate is slower than 300 FPM Therefore stroboscopes are just about impossible to use below 300 FPM
9. U S A Copyright 2014 Monarch Instrument all rights reserved Distributed by MicroDAQ com Ltd www MicroDAQ com 1074 4239 113 0314
10. a bolt key way or imperfection to use as a reference point If the object being viewed is perfectly symmetrical then the user needs to mark the object with a piece of tape or paint in a single location to be used as a reference point Look only at the reference point If the speed of rotation is within the range of the stroboscope start at a higher flash rate and adjust the flash rate down At some point you will stop the motion with only a single reference point of the object in view Note that at a flash rate twice the actual speed of the image you will see two images reference points As you approach the correct speed you may see three four or more images at harmonics of the actual speed The first SINGLE image you see is the true speed To confirm the true speed note the reading and adjust the stroboscope to exactly half this reading or just press the 2 button You should again see a single image which may be phase shifted with respect to the first image seen For example when viewing a shaft with a single key way you will see one stationary image of the key way at the actual speed and at 1 2 1 3 1 4 etc of the actual speed You will see 2 images of the key way at 2 times the actual speed 3 key way at 3 times etc The FPM equals the shafts Revolutions Per 13 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 Minute RPM at the highest flash rate that gives only one stationary image of the key way O
11. e display shows SEEUP SAVE Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 Press MENU to select use the UP DOWN button A V to select a memory location press MENU to select the location The flash rate is shown on the top row memory location on the bottom row see below 3600 5 3 SM Save Memory Press MENU to save and EXIT OUT OF MENU The unit will indicate BONE when the value has been changed 3 3 4 LOAD Loads the saved flash rate from a memory location Press MENU to select use the UP DOWN button A V to select the memory location press MENU to select The flash rate is shown on the top row memory location on the bottom row see below 3600 3 RM Recall Memory Press MENU to recall flash rate and EXIT OUT OF MENU 3 3 5 UNITS Selects the engineering units for the display When the display shows SEEUP Un 115 Press MENU to select use the UP DOWN button A V to select the units The units depend on the MODE of the unit The options are RPM RPS Revolutions per Minute Second Un E RPM Press MENU to save and exit back to the main menu or press lt to return to the main menu without saving The unit will indicate ZONE when the value has been changed Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 11 12 3 3 6 BKLIT Backlight Turns the display backlight on or off When the display shows SEEUP BRL UT Press MENU to select use the UP DOWN button A V to select o
12. econd method is to adjust the flash pulse width to a fixed number of microseconds Here the user sets the flash pulse width in microseconds not degrees As the flash rate increases the pulse width stays the same and the image will get brighter and more blurred as the flash width remains constant The degree of rotation visible changes to keep the pulse width of the flash constant Note There are two limits maintained by the strobe the pulse can never be greater than 2500 us nor can it exceed 18 of rotation The strobe automatically adjusts these values as the flash rate is increased or decreased to maintain these limits at all times For example at a flat rate of 600 flashes per minute 14 of blur represents a flash pulse width of 3800 psec The Strobe will limit this value to 2500 usec or 9 of rotation blur PREPARATION FOR USE The Stroboscope may be hand held or mounted on a tripod or other user supplied bracket using the 4 20 UNC bushing on the underside of the unit 2 1 Power The LED Strobe is battery powered and has internal rechargeable batteries The unit should be charged before use see Section 5 0 The actual operating time of the stroboscope depends on the flash pulse width Narrower flash widths increase the operating time Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 5 To turn on the stroboscope depress and hold the left most button s until the display shows the rev level REV t
13. hen release the button The unit will start up with the same settings it was last left at To turn the power off hold the left most button lt until the display shows OFF then release it 2 2 Input Output Connectors The strobe has input and output jacks on the right side of the stroboscope These can be used for external triggering or synchronization daisy chaining two or more strobes These jacks accept 1 8 3 5mm phone plugs input stereo output mono The input and output signals are TTL compatible Signal Input Common GND 3 2V Out to 3 2V Out to Sensor Sensor Common GND ra Signal Input IL TES Figure 2 1 Input Connector Detail Stereo plug Signal Output au Common en a Signal Output Figure 2 2 Output Connector Detail Mono plug Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 The input jack closer to the front of the strobe A enables an external signal to trigger the strobe Inserting a plug into the input jack will automatically put the strobe into the External Mode When the plug is removed the strobe will be put back into the Internal Mode With no external input the output jack closer to the rear of the strobe V provides a TTL compatible pulse from the strobe s internal oscillator If an external input is applied the output pulse is in sync with the input pulse This output pulse may be u
14. n or off As the status changes the backlight will activate accordingly OFF 3RL UC Press MENU to save and exit back to the main menu 3 3 7 DECPT Decimal Point Set the number of decimal places to display When the display shows SELUP JSELPT Press MENU to select use the UP DOWN button A V to select none 1 or 2 nant DELFT Press MENU to save and exit back to the main menu or press lt to return to the main menu without saving The unit will indicate TONE when the value has been changed 3 3 8 INPUT Input Pulse Polarity Set the active edge of the input pulse When the display shows SEEUP uu Ls Press MENU to select use the UP DOWN button A V to select NEGative or POSitive nES EIDE Press MENU to save and exit back to the main menu or press lt 4 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 to return to the main menu without saving The unit will indicate DONE when the value has been changed At the MAIN MENU press the LEFT button to exit to the operational condition 4 0USING THE STROBOSCOPE TO MEASURE RPM The primary use for a stroboscope is to stop motion for diagnostic inspection purposes However the stroboscope can be used to measure speed in RPM RPS In order to do this several factors need to be considered First the object being measured should be visible for all 360 of rotation e g The end of a shaft Second the object should have some unique part on it like
15. n optical sensor to stop or freeze motion The flash will be triggered on the rising or falling edge menu selectable of the external input pulse The strobe is in the External Input Mode Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 whenever there is a plug in the input jack When the strobe is in the External Input Mode EXT will be displayed When an external input is applied to the unit and the strobe is put in the Tachometer Mode the unit will read the signal from the external input sensor and display the reading on the LCD display without flashing the lamp When there is a valid external signal the on target indicator will turn on The strobe will not flash in the Tach Tachometer Mode To exit the External mode remove the device from the input jack 1 1 3 Charging Mode The Charging Mode is when the strobe has the battery recharger plugged into it The strobe will not operate while charging The status of the charge is indicated by the LED on the charger While charging the LED on the charger is RED when the charge is complete the LED will turn GREEN USE ONLY THE CHARGER SUPPLIED WITH THE STROBE Model LBC U 1 2 Brightness GLOSSARY LED Light Emitting Diode degree One rotation 360 msec millisecond 1 1 000 of a second usec microsecond 1 1 000 000 of a second The strobe s brightness depends on how wide the LED flash pulse is the wider the pulse the brighter the visual ou
16. sed to trigger a second stroboscope synchronously to illuminate larger areas Many strobes can be daisy chained The output jack of one strobe is connected to the input jack of the next strobe causing all the strobes to flash together and be controlled by the first strobe in the chain Note Cables should not exceed 8 feet or 2 5 meters in length in order to comply with the CE rating of this product 3 0 LED STROBE OPERATION The Strobe is controlled via the four buttons on the face of the unit The button on the left A is also the power button A B c O4 MENU gt Figure 3 1 LED Strobe Keypad Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 7 3 1 Adjusting the Flash Rate RPM The flash rate can be adjusted by pressing the large UP DOWN key D Pressing the UP end of the key A will increase the flash rate and pressing the DOWN end of the key VW will decrease the flash rate The flash rate can be adjusted in decades by pressing the LEFT lt A or RIGHT P C which will change which digit is adjusted The active digit will blink As the flash rate is increased or decreased the active digit will roll over to the next significant digit The LEFT and RIGHT digit selection will wrap around as shown below 3 2 Multiply or Divide By 2 The strobe flash rate can be instantly doubled x2 or halved 2 by pressing the MENU button B The lower display will show Pressing the UP DOWN button D
17. ternal input to show RPM EACH MODE Press MENU to save and return to the main menu or use UP DOWN button A V to change to Strobe Internal generator flash LEDs 5trbE MATI LELE ug Press MENU to save and return to the main menu or press lt to return to the main menu without saving The unit will indicate TONE when the value has been changed Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 10 3 3 2 BRITE Brightness Adjust the flash pulse width and consequently the brightness See Section 1 2 When the display shows SELUP BRE Press the MENU button to enter Width can be set in degrees or microseconds DEG Set the flash width in degrees 0 2 to 18 Use the UP DOWN button A V to change the degrees in 0 2 steps Note that the decade being edited can be changed using the LEFT lt or RIGHT P buttons 5 6 JEG Press the MENU button to move to microseconds uSEC Set the flash width in microseconds Maximum and minimum are equivalent to 0 2 to 18 degrees or 2500 uSec whichever is less i234 uSEC The display will be a conversion of the degrees to microseconds for the current flash rate To accept this press MENU again To adjust the flash rate in microseconds use the A V button Note that the decade being edited can be changed using the LEFT lt or RIGHT P buttons Press MENU to save and return to the main menu 3 3 3 SAVE Saves the current flash rate to a memory location When th
18. tput from the LEDs Since the strobe is primarily used on reciprocating or rotating targets there is a downside to the wider flashes All strobes work by giving short bursts of light the pulse width at a rapid repetition rate the flash rate Strobes rely on the persistence of the human eye the ability to remember and image and its response to bright light to give an apparent stopped motion Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 3 image Imagine a shaft rotating at 6000 RPM or one rotation every 1 100 of a second 10 msec If the strobe flashes once every 10 msec for a brief moment the user sees the flash at the same spot in the rotation of the shaft and the persistence of the eye remembers this until the next flash making the shaft appeared to be stopped As the target is rotating there is some movement evident during the strobe flash The longer the flash duration the more obvious the rotation is and this increases the blur This blur can be calculated if the shaft takes 10 msec to complete one revolution and the strobe flash duration is 100 psec 1 100 of a millisecond the shaft will turn flash duration time per rotation x 360 which is 0001 01 x 360 3 6 So you will see the shaft move 3 6 As the flash pulse widens you will see greater degrees of rotation which results in more blur and a brighter perceived illumination the LEDs are on longer so the average light the eyes see is greater
19. until the low battery condition is indicated To charge the strobe with the recharger Turn the strobe off 2 Plug the Li Ion charger cable into the recharger socket on the left of the keypad 3 Plug the recharger into an AC mains wall outlet 115 230 Vac Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 15 16 CAUTION Use of rechargers other than the one supplied Model LBC U or F037 005 W will damage the stroboscope and void the warranty DO NOT LEAVE A CHARGER THAT IS NOT PLUGGED INTO THE AC POWER CONNECTED TO THE STROBE When charging the strobe will indicate CHILE in the bottom right of the display when turned on and then it will shut off The recharger will fast charge the batteries for about 4 5 hours and then trickle charge the batteries The charger has an LED to indicate charge LED Red batteries charging LED Green batteries charged or charger not connected The battery pack may be replaced by removing the battery cover and unplugging the battery pack The new battery pack can be inserted and plugged into the unit Replace the battery cover 5 3 Stroboscope Disposal Prior to disposing of the battery powered strobe the user must remove the Lithium Ion batteries To do this remove the battery cover unplug the battery pack and dispose according to local laws governing battery disposal The rest of the parts may now be disposed of Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746
20. usts with flash rate Battery powered Internal Li Ion Rechargeable Batteries 3 6Vdc Average 1800 Lumens 26000 FPM 8 from lens 5 6 hours typical at 6000 FPM and 2 8 pulse width with fully charged batteries 4 5 hours typical with supplied charge 0 6 Ibs 0 27 kg including batteries Operating Temperature 32 104 F 0 40 C Humidity Safety Compliance Maximum relative humidity 80 for temperature up to 88 F 31 C decreasing linearly to 50 relative humidity at 104 F 40 C This product is designed to be safe for indoor use per IEC61010 1 CE EN61326 1 2006 EMC 2004 108 EC This product is CE certified and ROHS compatible Manufactured in an ISO9000 facility For troubleshooting information and technical support visit www monarchinstrument com 18 Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 7 0 OPTIONS AND ACCESSORIES SENSORS CA 4044 6 T 5 CC 13 Mini Tripod LBC U ROLS P Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 6 foot 1 8 m Pulse Input Output cable 1 8 inch 3 5 mm male phone plug to male BNC connector Reflective tape 5 foot 1 5 m roll 0 5 inch 12 7 mm wide Latching carrying case for Strobe with provision for accessories Miniature tripod with 1 4 x 20 threaded stud Universal Li Ion Recharger 115 230 Vac with USA Remote Optical Laser Sensor with 8 foot 2 5 m cable for triggering strobe 19 Printed in the
21. will double A or halve V the flash rate This is useful in determining actual rotational speed refer to the section on speed measurement Section 4 Note that if doubling or halving the flash rate will cause the strobe to exceed its capability the unit will be limited to the highest or lowest value it can generate respectively To exit this mode press the LEFT lt A button 3 3 Menu Options To enter the Setup Mode it is necessary to press the MENU button B twice The first press will enter the x2 2 mode as described above the second press will enter the Setup Mode The top line of the display will show 5ELUP and the bottom line will show the setup options Use the UP DOWN button A V to scroll through the setup options Press Distributed by MicroDAQ com Ltd www MicroDAQ com 603 746 5524 MENU B at any time to select that setup option Note that currently selected options are indicated by the star icon 3 Setup options are in order as follows MODE gt BRITE gt SAVE gt LOAD gt UNITS gt BKLIT gt DECPT gt INPUT These options are described in the following sections Note that the order of the options within each setup option may change depending on current operating settings 3 3 1 MODE Set the strobe into the flash strobe mode or the tachometer no flash mode When the display shows SEEU MODE Press the MENU button to enter The mode can be set to Tach or Strobe Tach No LED flash use ex
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