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1. DTO2234 Digital Photo Tachometer ele componen User Manuel Gebruikershandleiding Manuel d Utilisation 1 FEATURES Measuring RPM is safe amp accurate without attachment to object Wide measuring range amp high resolution Digital display gives exact RPM with no guessing or errors Uses the exclusive MICRO COMPUTER LSI circuit and crystal time base to offer high accuracy measurement amp fast measuring time e The last value max value min value will be automatically stored in memory and can be obtained by pressing MEMORY CALL BUTTON e The use of durable long lasting components including a strong light weight ABSplastic housing assures maintenance free performance for many years The housing has been carefully shaped to fit comfortably in either hand 2 SPECIFICATIONS Display Test Range Resolution Accuracy Sampling Time Test Range Select Memory Detecting Distance Time Base Circuit Batteries Power consumption Operation Temp Size Weight Accessories DTO2234 5 digits 10mm 0 4 LCD Liquid Crystal Display with function annunciation 5 to 100000 RPM 0 1 RPM 0 5 to 999 9 RPM 1 RPM over 1000 RPM 0 05 1 digit 1 sec over 60 RPM Automatic Last value Max value Min value 50 to 150mm 2 to 6 typical max 300mm 12 depending upon ambient light Quartz crystal Exclusive one chip of microcomputer LSI circuit 4
2. o get the real RPM 5 3 REMOVE BATTERIES If the instrument will not be used for an extended period remove the batteries 6 MEMORY CALL BUTTON OPERATION 6 1 A readout the last value max value min value obtained immediately before turning off the MEASURING BUTTON is automatically memorised For example please refer to figure 2 below Max Value Last Value Display Reading Min Value Measuring Time DTO2234 3 GB 6 2 The memorised value will be displayed on the indicator when A First push To display the last value LAST and the last value will be displayed by turn B Second push To display the maximum value MAX and the max value will be displayed by turn C Third push To display the minimum value MIN and the min value will be displayed by turn 7 REPLACING BATTERIES 1 When it is necessary to replace the batteries battery voltage less than approx 4 5V LO will appear on the display 2 Slide the battery cover 7 away from the instrument and remove the batteries 3 Install the batteries 4 x 1 5V AA UM 3 correctly into the case Permanent damage to the circuit may result from incorrect installation DTO2234 4 GB
3. x 1 5V AA UM 3 batteries Approx 150mA operation 0 to 50 C 32 to 122 F 191 x 72 x 38mm 7 5 x 2 8 x 1 5 250g 0 55 Ib including batteries Carrying case 1 pe Reflection tape marks 600mm Ipc Operation manual Ipc 1 GB 3 FRONT PANEL DESCRIPTIONS g Ne 1 Reflective mark 2 Signal light beam 3 3 Monitor indicator 4 Display LI 5 Measure button 5 6 Memory call button 7 Battery compartment cover 4 MEASURING PROCEDURE Apply a reflective mark to the object being measured Depress the MEASURE BUTTON 5 and align the visible light beam 2 with the applied target Verify that the MONITOR INDICATOR 3 lights up when the measuring stabilises about 1 to 2 seconds DTO2234 2 GB 5 MEASURING CONSIDERATION 5 1 REFLECTIVE MARK Cut and peel the adhesive tape provided into approx 12mm 0 5 squares and apply one square to each rotation shaft a The non reflective area must always be larger than the reflective area b Ifthe shaft is normally reflective it must be covered with black tape or paint before attaching reflective tape c The shaft surface must be clean and smooth before applying reflective tape 5 2 VERY LOW RPM MEASUREMENT It is easy to get high resolutions and a fast sampling time If you want to measure very low RPM values we suggest you to attach more REFLECTIVE MARKS dividing the area equally Then divide the reading shown by the number of REFLECTIVE MARKS t

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