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461895-EN V2.1   8/13 

6

Surface Speed Measurement

 

1.  Slide the Function Switch to "SURFACE SPEED ft/min" or "m/min". 

2.  Attach the Surface Speed Wheel to the meter shaft. 

3.  Press the Measure button and hold the surface speed wheel against the device 

being measured (a conveyor belt, for example). 

4.  Release the Measure button once the display has stabilized (approx. 2 seconds). 

 

CAUTION:

 Moving belts and other moving objects can be dangerous. Use extreme 

care when taking measurements. 

 

Memory Recall 

When measuring, the LAST, MAX and MIN readings are automatically stored before the 
Measure button is released. Recall the values by pressing the Memory button. 

 

1.  Press once and hold - the last value is displayed followed by "LA" 

2.  Press again and hold - the maximum value is displayed followed by "UP" 

3.  Press again and hold - the minimum value is displayed followed by "dn" 

 

Battery Replacement 

 

The low battery indication (LO) appears when the batteries need to be replaced.  
 
To replace the batteries: 

 

1.  Open the rear battery compartment by removing the screw that secures it.  
2.  Replace the four 1.5V AA batteries. 
3.  Replace the battery cover. 

 

Summary of Contents for 461895

Page 1: ...User s Guide COMBINATION CONTACT PHOTO TACHOMETER Model 461895 ...

Page 2: ...ombination Contact Photo Tachometer Model 461895 The 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 Careful use of this device will provide years of reliable operation ...

Page 3: ...depending on ambient light Operating Temperature 32 F to 122 F 0 C to 50 C Power Supply Four 1 5 V AA batteries Weight 0 66 lbs 300g including battery Size 8 5 x 2 6 x1 5 215 x 65 x 38mm Accessories Reflective tape 23 cone and funnel rpm adaptor surface speed wheel and carrying case Electrical Specifications Range Resolution Accuracy rdg Photo Tachometer 5 to 99 999 rpm 0 1 rpm 0 5 to 999 9 rpm 1 ...

Page 4: ...ng 3 Monitor indication In the non contact mode the monitor switches on each time the reflective tape breaks the light beam 4 Measurement Display Indicates the measurement result 5 Memory button Press to recall the stored LAST MAX MIN readings 6 Function Switch Select Tachometer or Linear Surface Speed mode 7 Rotating shaft In the contact mode of operation carefully touch the shaft to the moving o...

Page 5: ...s much as possible 4 If the RPM measurement is less than 50 apply additional squares of reflective tape equidistant Divide the reading shown on the display by the number of reflective squares to get the actual RPM NOTE Bright ambient light may interfere with the reflected light beam Shading the target area may be necessary in some cases CAUTION Rotating objects can be dangerous Use extreme care wh...

Page 6: ...ing measurements Memory Recall When measuring the LAST MAX and MIN readings are automatically stored before the Measure button is released Recall the values by pressing the Memory button 1 Press once and hold the last value is displayed followed by LA 2 Press again and hold the maximum value is displayed followed by UP 3 Press again and hold the minimum value is displayed followed by dn Battery Re...

Page 7: ...or consequential damages FLIR s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Calibration Repair and Customer Care Services FLIR Systems Inc offers repair and calibration services for the Extech Instruments products we sell NIST certification for most products is als...

Page 8: ...tel La responsabilité totale de FLIR est limitée à la réparation ou au remplacement du produit La garantie définie ci dessus est inclusive et aucune autre garantie écrite ou orale n est exprimée ou implicite Calibrage réparation et services après vente FLIR Systems Inc offre des services de calibrage et de réparation pour les produits Extech Instruments que nous commercialisons Nous fournissons ég...

Page 9: ...identales o consecuentes La responsabilidad total de FLIR está limitada a la reparación o reemplazo del producto La garantía precedente es inclusiva y no hay otra garantía ya sea escrita u oral expresa o implícita Servicios de calibración reparación y atención a clientes FLIR Systems Inc ofrece servicios de reparación y calibración para los productos que vendemos de Extech Instruments Además ofrec...

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