Digital Hand Tachometer HT-3100
Contents
1. Measure switch The instrument is turned on and becomes ready to start measurement when this switch is depressed Range switch Used to select the Low 1 5 2000r min or High 15 10000r min measuring range Probe shaft Attach a rubber contact tip KS 300 when measuring the rotational speed a circumference ring KS 200 when measuring the circumferential speed to this shaft The probe shaft is provided with a lock pin to prevent slip ping of the measuring tip or ring Accessory storage pocket Slide the cover while pressing it down The cover comes off allowing you to store one piece each of KS 300 and KS 200 or two pieces KS 300 in the pocket Battery cover When replacing the batteries pull this cover while press ing the knob unit it comes off Display Shows a 5 digit measurement value associated with the unit of measure r min OVER alarm An OVER alarm appears when the measured speed exceeds 2000 0 r min on the Low range or when it ex ceeds 10000 r min on the High range showing the re spective maximum readings This indication warns you that the rotational speed is out of the measuring range Z00088 T2088 B alarm The letter B appears on the LCD display when the bat teries have been discharged Replace the batteries as soon as possible 12345 ADDITIONAL ACCESSORIES The p2. at least until the revolution value is displayed from the status that the rotational object is stopped TROUBLESHOOTING Symptom Check procedure Corrective action 1 Batteries are inserted 1 Insert batteries 2 Battery polarity is reversed 2 Insert batteries is correct polarity 3 Batteries are discharged 3 Replace batteries with new ones No indication 4 It is still no indication even through the 4 Reset operation is conducted batteries are replaced 1 Remove the batteries 2 Press the measure switch for several seconds 3 Insert the batteries le 1 Conical head of contact tip is deformed 1 Replace contact tip with a new one Incorrect speed by wearing ey 2 Hold tachometer securely to prevent indication 2 Contact tip is slipping on rotating object slipping 3 Low voltage alarm B is displayed 3 Replace all batteries with new one 4 The measure switch is being pressed 4 Press the measure switch SPECIFICATIONS OF HT 3100 OUTER DIMENSIONS STORAGE INSTRUCTIONS 1 Measuring Section Measuring range 1 5 2000 0 r min Lo range 15 10000 r min Hi range Lo and Hi ranges are hereinafter referred to as L and H ranges respectively The HT 3100 is switched between L and H ranges by the range switch Over range indication When measurement taken exceeds 2000 0 r min on L range or 10000 r min on H range
3. which may cause an equipment failure Be careful not to allow water or dust to intrude inside the cabinet Do not use the HT 3100 at a location where it may be exposed to splashing water excessive mois ture or dust Do not drop or give strong shocks to the HT 3100 It contains precision electronic components which can be damaged by dropping or strong shocks Be sure to remove batteries when not using the HT 3100 for an extended period of time If the HT 3100 is left with discharged batteries or unused for a long time with batteries inside it may be damaged by the leak of chemicals If the outer case becomes soiled wipe it with a dry soft cloth or with a cloth slightly dampened with a neutral detergent Avoid volatile organic solvents such as thinners benzine and alcohol e The maximum measurable rpm is 10000 r min Do not attempt to use the HT 3100 to measure rpm speeds higher than 10000 e Inspect the contact tip and the circumference ring be fore using the Ht 3100 Replace the contact tip with a new one if the rubber part of the tip is deformed by wear or the resin part becomes cracked or the attach ment at the rotating shaft become loose When replac ing the tip do not use any contact tip other than one manufactured by Ono Sokki e Mount the contact tip or circumference ring by aligning the cutout in the tip or ring with the pin protruding from the probe shaft of the tachometer and sliding it prop erly onto the prob
4. DIGITAL HAND TACHOMETER HT 3100 INSTRUCTION MANUAL HT 3100 DIGITAL TACHOMETER ONO SOKKI Copyright ONO SOKKI CO LTD 2002 All rights reserved mm Omission of The Qualification Issuance Since this product has tested through a series of strict inspections and a complete program of quality control issuance of the test qualification has been omitted Outer appearance and specifications are subject to change without prior notice HOME PAGE http www onosokki co jp English english htm ONO SORRI WORLDWIDE Ono Sokki Co Ltd 1 16 1 Hakusan Midori ku Yokohama 226 8507 Japan Phone 045 935 3976 Fax 045 930 1906 E mail overseas onosokki co jp B00001784 1M02052402 11 04X MS 3 4H Thank you for your purchase of the HT 3100 Digital Hand Tachometer To ensure correct and safe use of the HT 3100 observe the precautions given below Note that Ono Sokki shall not be held responsible for the consequences of operation of the HT 3100 which does not observe these precautions The symbol indicates that there is danger to both equipment and human life and that it is necessary to refer to the user s manual GENERAL OPERATING PRECAUTIONS WARNING Do not use the HT 3100 at a location subjected to sud den temperature changes Do not hastily move the HT 3100 from high temperature to low temperature envi ronments or vice versa to prevent internal condensa tion
5. HT 3100 is designed for a storage temperature range of 10 C to 55 C Store it in a well ventilated place not exposed to extremely high or low temperature high humid ity or direct sunlight Be sure to remove batteries when not using the instrument for a long period to prevent damages caused by the leak of chemicals etc WARRANTY This product is covered by a warranty for a period of one year from the date of purchase This warranty covers free of charge repair for defects judged to be the responsibility of the manufacturer i e defects occurred while the product is used under nor mal operating conditions according to descriptions in the manual and notices on the unit label For free of charge repair contact either your sales rep resentative or our sales office nearby The following failures will be handled on a fee basis even during the warranty period a Failures occurring through misuse mis operation or modification b Failures occurring through mishandling dropping or transportation c Failures occurring through natural calamities fires earthquakes flooding and lightening environmen tal disruption or abnormal voltage For repairs after the warranty period expired contact your sales representative or our sales office nearby
6. ainst the center hole on the end of a turning shaft The instrument can also be used as a circumferential speed meter by replacing the contact tip with the circum ference ring FEATURES e Ergonomically designed curved body comfortably fits in the palm of your hand e Switching between High and Low ranges permits you to measure between 1 5 and 10000 r min Complete accessories can be packed in the instrument body e Circumferential speed can be measured by use of the circumference ring e Last measured data is displayed on screen for about one minute after measurement by data hold function STANDARD ACCESSORIES Your package should contain the following materials Please make sure that you have received all these items upon unpacking Digital Hand Tachometer HT 3100 cccccccseseeseeeeee 1 Rubber contact tip KS 300 cececeseseeeseseteseteeeees 2 Circumference ring KS 200 cccceceseseseseseteseneeesees 1 Size AAA dry cell battery R 03 eseccseeeeeteeeeee 3 Instruction Manual eeeceececesceseeseescseeeeeeeeeeeee 1 o Rubber contact tip Circumference ring One each rubber contact tip and circumference ring are stored in the accessory storage pocket NOMENCLATURE AND FUNCTION OF INDIVIDUAL PARTS i LCD Display HARRA m HT 3100 DIGITAL TACHOMETER ONO SOKKI
7. e shaft e In making rom measurements be sure that the center of the contact tip is pressed securely up against the rotating shaft being measured and that the tachom eter is held securely against the shaft e When making circumferential speed measurements press the circumference ring up against the object be ing measured making sure that the ring is aligned so as to be parallel to the direction of movement of the object and that it is held securely in contact with the object e Never attempt to measure rpm using the circumference ring as this is dangerous Always use the contact tip to measure rpm To measure a shaft that does not have a center hole on its end we recommend a non contact type tachometer such as the Ono Sokki model HT 4100 If the rpm exceeds the selected measurement range the OVER warning will appear on the display If the Lo range has been selected switch to the Hi range If the OVER warning appears even in the Hi range stop measurement Be sure to observe the above precautions to ensure safe operation of the HT 3100 Also as an additional safety measure we recommend that you wear protective eye glasses when making measurements OVERVIEW Comprising a revolution sensor a measuring section and a display in a compact body the HT 3100 is a contact type handheld tachometer operated with built in batteries Mea surements can be easily made by keeping its contact tip pressed ag
8. ive Yokohama 8 December 1995 ar a Toshishige Maeda General Manager Design Engineering Div 1 Ono Sokki Co Ltd This instrument is designed to enable measurement of ei ther the rotational speed or circumferential speed by chang ing contact attachments Measurement of Rotating Speed 1 Mount the rubber contact tip KS 300 to the probe shaft Make sure the groove of the rubber contact tip lines up with the lock pin position properly 2 Select the Lo or Hi measuring range by the Range switch Lo range 1 5 2000 0 r min Hi range 15 10000 r min 3 While holding the Measure switch down force the contact tip against the center hole on the turning shaft end as shown in Fig 1 so that they grip firmly Main tain the tachometer in a proper position to align the axis of the probe shaft with the axis of the turning shaft to be measured 4 The tachometer gives a digital rom reading that is con tinuously updated every second The legend OVER will be displayed when the rotational speed exceeds the measuring range in use Should this happen when the Lo range is selected turn to the Hi range In case OVER is displayed on the Hi range you must stop measurement 5 After releasing the Measure switch the built in memory retains the last reading until it is automatically erased about one minute later However beware that the read ing will be cleared if you re press the Measure
9. robe shaft can be extended about 40 mm by use of an extension shaft KS 700 optional for an overall shaft length of about 75 mm The extension shaft is attached to the probe shaft in the same manner as the rubber contact tip Then the rubber contact tip is fitted to the end of the extension shaft Please do not use it for a circumference ring e Carrying Case HT 0001A optional ABOUT THE BATTERIES MEASUREMENT PROCEDURE This instrument operates on three Size AAA dry cell batter ies The attached batteries are samples The life may be shorter than normally expected When the batteries have been discharged the LCD display shown a B alarm Be sure to replace all three batteries with brand new batteries when this has happened How to replace the batteries 1 Remove the battery cover by pulling out it while press ing the knob 2 After removing the existing batteries insert new bat teries with care not to reverse their polarity 3 Close the battery cover DECLARATION OF CONFORMITY We Ono Sokki Co Ltd 1 16 1 Hakusan Midori ku Yokohama 226 Japan declare under our sole responsibility that the product Category Name DIGITAL HAND TACHOMETER Model Name _ HT 3100 to which this declaration relates is in conformity with the following standard s or other normative document s EN55011 1991 Group ClassB EN50082 2 1995 following the provisions of 89 336 EEC direct
10. switch within the one minute period Note that the reading will be canceled when the range selection is charged Measurement of Circumferential Speed mm s 1 Mount the circumference ring KS 100 mm s optional or KS 200 m min standard to the probe shaft Make sure the groove of the circumference ring lines up with the lock pin position properly 2 Select the Lo or Hi measuring range by the Range switch KS 100 Optional KS 200 Standard Lo range 1 5 2000 0 mm s 0 15 200 00 m min Hi range 15 10000 mm s 1 5 1000 0 m min 3 While holding the Measure switch down force the cir cumference ring against the turning shaft as sown in Fig 2 4 The tachometer gives a digital circumferential speed reading that is continuously updated every second The unit of measure varies depending on which type of cir cumference ring you use When using the KS 100 op tional the tachometer directly shows mm s readings When using the KS 200 standard the tachometer shows m min reading multiplied by 1 10 As an example if the reading is 500 r min it must be converted to 50 0 m min 5 After releasing the Measure switch the built in memory retains the last reading until it is automatically erased about one minute later However beware that the read ing will be cleared if you re press the Measure switch within the one minute period A It may sometimes require 5 second
11. the reading shows 2000 0 r min or 10000 r min respectively with the legend OVER displayed at the upper left corner of the LCD readout Display No of digits LCD 5 digits Measurement display time L range 1s 2s between 1 5 3 0 r min H range 1s 2s between 15 30 r min Measuring resolution L range 0 1 r min H range 1 r min Measuring accuracy L range 1 5 1249 9 r min 0 1 r min 1250 0 2000 0 r min 0 2 r min H range 15 10000 r min 1 r min 2 Sensor Section No of pulses 20 pulses rev Light source LED Light sensor Photo transistor Data Hold Function The last measured data is kept alive in memory and dis played on screen for one minute after measurement The reading is automatically erased one minute later General Specifications Power supply Battery life Size AAA dry cell batteries 3 pcs 50 hour continuous operation When battery voltage drops below about 3 3 V the legend B appears on LCD to warm of low battery voltage Operating temperature 0 C to 40 C Non condensing Storage temperature 10 C to 55 C Non condensing Dimensions and mass 171 5 x 38 x 60 mm Approx 200 g Including batteries Low voltage alarm 60 38 HT 3100 qa DIGITAL TACHOMETER 140 ONO SOKKI 57 30 5 5 The
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