461895 - Odometer Extech - Free user manual and instructions

Product type	Digital odometer
Brand	Extech
Model	461895
Category	Odometer
Dimensions	190 x 55 x 35 mm
Weight	200 g (with batteries)
Power supply	2 x AAA 1.5 V batteries
Battery life	About 50 hours of continuous use
Units of measurement	Meters (m), feet (ft), inches (in)
Accuracy	±0.5% of reading
Measuring range	0.1 m to 99999.9 m
Resolution	0.1 m
Display	7-segment backlit LCD screen
Functions	Single distance measurement, cumulative measurement, measurement memory, pause, auto shut-off
Memory	Up to 20 stored measurements
Warranty	1 year (sensors and cables: 6 months)
Maintenance	Clean with a soft, dry cloth. Do not use solvents.
Cleaning	Wipe the device with a slightly damp cloth. Avoid moisture.
Safety	Do not expose to violent shocks, excessive humidity or extreme temperatures.
Spare parts	Batteries (AAA type), measuring wheel (optional)
Repairability	Repair possible via Extech after-sales service or authorized centers.
General information	The Extech 461895 odometer is a wheel distance measuring instrument, ideal for construction, surveying and topography professionals.

Frequently Asked Questions - 461895 Extech

How to turn on the Extech 461895 odometer?

Press the ON/OFF button located on the side of the device. The LCD screen turns on and displays 0.

How to change the unit of measurement?

Hold down the UNIT button for 2 seconds. The display successively shows the available units: meters (m), feet (ft) and inches (in). Release when the desired unit appears.

What batteries to use and how to replace them?

Use two AAA 1.5 V batteries. Open the battery compartment on the back of the device, insert the batteries respecting polarity, then close the cover.

What to do if the display is dim or blinking?

This indicates low batteries. Replace the batteries with new ones. If the problem persists, contact support.

How to take a distance measurement?

Place the measuring wheel at the starting point, press START and move the device in a straight line to the ending point. Press STOP to record the displayed distance.

How to use the cumulative measurement function?

After a first measurement, press MEMO to save it. Continue the next measurement; the cumulative distance is displayed automatically. To view the total, press TOTAL.

What is the accuracy of the odometer?

Accuracy is ±0.5% of the reading. For best accuracy, ensure the wheel is in constant contact with the surface and the movement is straight.

How to clean and maintain the device?

After use, wipe the device with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth. Never use chemical or abrasive products.

Is the device waterproof?

No, the odometer is not waterproof. Avoid any exposure to rain, splashes or excessive humidity. Store it in a dry place after use.

Where can I get spare parts or have the device repaired?

Contact Extech customer service by email at [e-mail] or by phone at [phone] (option 4). You can also visit www.extech.com to find an authorized service center.

USER MANUAL 461895 Extech

Congratulations on your purchase of the Extech Combination 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.

General Specifications

Circuit Custom one-chip	LSI microprocessor circuit
Time base Quartz crystal
Display 5 digit LCD display
Measurements Photo Tachometer - 5 to 99,999 rpmContact Tachometer - 0.5 to 19,999 rpmSurface Speed - 0.2 to 6,560 ft/minSurface Speed - 0.05 to 1999.9 m/min
Memory Saves LAST, MAX, and MIN readings
Sampling Time Photo Tachometer - 1 sec. (over 60 rpm)Contact Tachometer - 1 sec. (over 6 rpm)
Detecting Distance -Photo Tachometer	2 to 6" (50 to 150 mm) 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 Accuracy	Resolution	(% rdg)
Photo Tachometer	5 to 99,999 rpm	0.1 rpm (0.5 to 999.9 rpm)1 rpm (over 1000 rpm)	±(0.05% + 1d)
Contact Tachometer	0.05 to 19,999 rpm	0.1 rpm (0.5 to 999.9 rpm)1 rpm (over 1000 rpm)
Surface Speed	0.2 to 6560 ft/min	0.1 ft/min (0.1 to 999.9 ft/min)1 ft/min (over 1000 ft/min)	± (1% rdg + 1d)
Surface Speed	0.05 to 1999.9 m/min	0.01 m/min (0.05 to 99.99 m/min)0.1 m/min (over 100 m/min)

1. Reflective tape – In the non-contact mode of operation, place a small square piece of tape on the object under test.
2. Sensor light source – In the non-contact mode, direct the light beam toward the reflective tape while the device under test is moving.
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 object.
8. Measure button – Press to initiate a measurement.
9. 1' Battery compartment on rear

Photo Tachometer

1. Slide the Function Switch to the "rpm PHOTO" position.
2. Apply a 0.5" (12mm) square piece of reflective tape to the object being measured.
3. Press the Measure button and align the visible light beam with the object being measured. Check that the Monitor Indicator switches on (upper left-hand corner of LCD) when the reflective tape passes through the light beam. Release the Measure button once the display stabilizes (approx. 2 seconds). For best results, hold the meter's light source 6 -12 inches from the object being measured. For best results, minimize the ambient light as 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 when holding the meter near any such object.

Contact Tachometer

1. Slide the Function Switch to the "rpm CONTACT" position.
2. Press the Measure button while lightly pressing the rotating ring against the center opening of a rotating shaft. Release the Measure button once the display has stabilized (approx. 2 seconds).

CAUTION: Rotating objects can be dangerous. Use extreme care when holding the meter near a rotating object.

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.

FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department for authorization. Visit the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. FLIR Systems, Inc. specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental 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 also provided. Call the Customer Service Department for information on calibration services available for this product. Annual calibrations should be performed to verify meter performance and accuracy. Technical support and general customer service is also provided, refer to the contact information provided below.

Support Lines: U.S. [phone]; International: [phone]

Technical Support: Option 3; E-mail: [e-mail]

Repair & Returns: Option 4; E-mail: [e-mail]

Product specifications are subject to change without notice

Please visit our website for the most up-to-date information

www.extech.com

FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA

ISO 9001 Certified

Copyright © 2013 FLIR Systems, Inc.

All rights reserved including the right of reproduction in whole or in part in any form

www.extech.com

Copyright © 2013 FLIR Systems, Inc.

Copyright © 2013 FLIR Systems, Inc.