Extech RPM40 Combination Contact/Laser Photo
Contents
1. 1 RPM Adapter Contact 2 Surface Soeed Wheel 1 3 LCD Display 2 4 Photo Detect Sensor 5 Laser pointer red 6 Monitor Indicator am 7 Measure Button 6 8 Function Button 3 9 Memory Button The battery compartment is located on back of meter 45 Battery Replacement The low battery indicator appears when the batteries need to be replaced To replace the batteries 1 Open the rear battery compartment by removing the two Phillips head screws that secure it 2 Replace the four 1 5V AA batteries observing correct polarity 3 Replace the battery cover before attempting to use the meter Never dispose of used batteries or rechargeable batteries in household waste As consumers users are legally required to take used batteries to appropriate collection sites the retail store where the batteries were purchased or wherever mu batteries are sold Disposal Do not dispose of this instrument in household waste The user is obligated to take end of life devices to a designated collection point for the disposal of electrical and electronic equipment 3 RPM40 en GB_V1 2 10 14 Operation Selecting a function Press and hold the MEASURE button 7 and while holding MEASURE use short presses of the FUNCTION button 8 to step through the modes The available modes are Contact RPM measurement Surface speed m min Surface speed ft min Surface speed in min and Photo RPM measurement laser pointer wi2. funnel Copyright 2014 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 6 RPM40 en GB_V1 2 10 14
3. EXTECH INSTRUMENTS COMBINATION PHOTO CONTACT TACHOMETER Model RPM40 Introduction Thank you for selecting the Extech Combination Photo Contact Tachometer Model RPM40 This combination tachometer is a patented design providing contact and non contact RPM measurements In addition linear surface speeds can be measured in ft min or m min This device is shipped fully tested and calibrated and with proper use will provide years of reliable service Please visit our website www extech com to check for the latest version of this User Guide Product Updates and Customer Support Features Compact pocket tachometer Combination photo and contact tachometer e Laser pointer for Photo Tachometer targeting Non contact Photo Tachometer detects target to a distance of 1 5m 4 9 ft e Wide measuring range 0 5 to 19 999 RPM Contact and 99 999 RPM Photo 0 1 basic accuracy Memory Recall of highest lowest and last readings e Durable light weight ABS plastic housing Safety 1 Use extreme caution when the laser beam is on 2 Do not point the beam toward anyone s eye 3 careful not to let the beam strike the eye from a reflective surface 4 Do not use the laser near explosive gases or in other potentially explosive areas N i CAUTION Laser Radiation 2 RPM40 en GB_V1 2 10 14 Meter Description
4. dapter 1 against the center of the rotating axis to be measured Release the MEASURE button when the reading stabilizes approximately 2 seconds Reversible LCD Display The LCD display indicates Photo Tachometer measurements in one direction and Contact measurements in the opposite direction This permits the user to easily read the measurement digits in both measurement modes Surface Speed Measurement 1 2 3 4 Select the Surface Speed m min ft min or in min mode as described above in the Selecting a function section Attach the Surface Speed wheel 2 to the meter Press the MEASURE button and place the surface speed wheel against the object under test Release the MEASURE button when the reading stabilizes approximately 2 seconds Memory Recall The minimum dn maximum UP and last LA reading values are stored in memory after each measurement after the MEASURE button is released To view these values 1 Press and hold the MEMORY button 9 the display will toggle between the stored reading and its identification label dn for lowest reading UP for highest reading or LA for last reading Release the MEMORY button and then press and hold it again to view the next stored reading Release the MEMORY button and then press and hold it again to view the next stored reading Repeat these steps as desired 5 RPM40 en GB_V1 2 10 14 Specifications Measurement amp Range Photo Tac
5. hometer 5 to 99 999 RPM Contact Tachometer 0 5 to 19 999 RPM Surface Speed m min 0 05 to 1 999 9 m min ft min 0 2 to 6 560 ft min in min 2 0 to 78 740 in min Resolution RPM 0 1 RPM lt 1000 RPM 1 RPM 21000 RPM m min 0 01 m min lt 100 m min 0 1 m min 2100 m min ft min 0 1 ft min lt 1000 ft min 1 ft min 21000 ft min in min 0 1 in min lt 1000 in min 1 in min 21000 in min Display LCD size 32mm x 28mm 1 26 x 1 10 Large 5 digit reversible display with unit of measure and alert indicators Accuracy 0 1 of reading 1 digit Sampling rate Photo mode 1 second gt 60 RPM Contact mode 1 second gt 6 RPM Photo Tachometer detecting distance Typically 50 to 150cm 2 to 60 Time base circuit Quartz crystal Laser light source Less than 1 mW Class 2 laser diode 645 Operating Temperature 0 to 50 C 32 to 122 F Operating Humidity Less than 80 R H Memory Stores Recalls highest lowest and last values Battery 4 x 1 5V AAA batteries Power Consumption Photo tachometer Approximately 20 mA DC Contact tachometer Approximately 9 5 mA DC Dimensions 165 x 50 x 33 mm 6 5 x 2 0 x 1 3 Weight 182g 0 4 165 Battery weight included Accessories included Batteries Reflective tape 60cm 24 Surface speed rpm rotating attachments cone amp
6. ll switch ON in this mode Note When a function is selected it becomes the default mode of operation even after the unit is powered off until another function is selected Photo RPM Measurement 1 Select Photo RPM measurement mode as instructed in the previous section 2 Apply an appropriately sized square piece of reflective tape to the surface of the object under test 3 Press and hold the MEASURE button and align the laser pointer with the reflective tape Measurement distance should be limited to a distance range of 2 to 60 5 to 150cm 4 Verify that the Monitor Indicator 6 appears on the LCD when the reflective tape passes through the beam 5 Release the Measure button when the RPM reading stabilizes on the LCD 6 If the rpm is under 50 apply additional squares of reflective tape Divide the reading shown on the display by the number of pieces of reflective tape squares to calculate the actual rpm Light source and reflection Photo Tachometer NOTE Bright ambient light may interfere with the reflected light Shading the target area may be necessary in some cases CAUTION Rotating objects can be dangerous Use extreme care 4 RPM40 en GB_V1 2 10 14 Contact RPM Measurement 4 Install a rotating attachment cone or funnel to the meter Select Contact RPM measurement mode as described in the Selecting a function section Press and hold the MEASURE button while simultaneously placing the RPM a
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