461825 - Odometer Extech - Free user manual and instructions

Product Type	Digital Wheel Odometer
Brand	Extech
Model	461825
Measurement Range	0 to 99999.9 meters / feet
Resolution	0.1 m (0.1 ft)
Accuracy	±0.5% of reading
Measurement Units	Meters, feet, yards (depending on model)
Display	6-digit LCD
Power Supply	1 x 9V battery (included)
Battery Life	Approximately 100 hours of continuous use
Dimensions	120 x 70 x 50 mm (excluding wheel)
Wheel Diameter	160 mm
Weight	320 g (with battery)
Housing Material	ABS plastic
Main Functions	Simple distance measurement, zero reset, last measurement memory
Maintenance and Cleaning	Clean with a damp cloth, do not use solvents
Safety	Indoor/outdoor use, avoid violent shocks
Available Spare Parts	9V battery, replacement wheel
Warranty	1 year (except sensors and cables: 6 months)
Certification	ISO 9001

Frequently Asked Questions - 461825 Extech

How to measure a distance with the Extech 461825 odometer?

Place the wheel on the surface, press the ON button, then roll the device along the path. The display shows the distance traveled. To reset to zero, press ZERO.

Which battery to use and how to change it?

The device uses a standard 9V battery. Open the compartment at the back, insert the battery respecting polarity, then close.

Can the odometer measure in feet instead of meters?

Yes, the 461825 model allows switching between meters, feet, and yards via a UNIT button.

What is the accuracy of this odometer?

The accuracy is ±0.5% of reading. It may be affected by very uneven surfaces or wheel slippage.

Can the odometer be used on all types of surfaces?

It is designed for hard, flat surfaces (asphalt, concrete, tile). On grass or gravel, measurement may be less accurate.

How to clean the odometer?

Use a soft cloth slightly dampened with water. Avoid chemical or abrasive products. Clean the wheel to remove residues.

What to do if the display becomes dim or the device does not turn on?

Check the battery. If discharged, replace it. If the problem persists, contact Extech technical support.

Where to find a replacement wheel for the odometer?

Spare parts are available from Extech customer service. Visit www.extech.com or contact [e-mail].

Is the odometer waterproof?

No, it is not waterproof. Avoid exposure to rain or excessive humidity. Store in a dry place.

How to contact Extech customer service?

In the US: 877-439-8324; international: [phone]. Support email: [e-mail]; Repair email: [e-mail].

USER MANUAL 461825 Extech

Combination Photo-Tachometer Stroboscope

Model 461825

Introduction

Congratulations on your purchase of Extech's Combination Photo-Tachometer/Stroboscope. 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.

Meter Description

1. Tachometer Light Source
2. LCD Display
3. Measure trigger button
4. Memory Recall button
5. FINE adjust knob
6. COARSE adjust knob
7. Range/Function select switch
8. Stroboscope flash tube

Note: Battery compartment is on rear of meter

Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle

STROBOSCOPE MEASUREMENT PROCEDURE

Select the Stroboscope Function and Range using the Range/Function Select Switch. The switch has four positions, three of which are stroboscope-dedicated with white range numbers. The fourth position is Photo-Tachometer dedicated and is labeled as such.

Speed Measurements.

1. Remove power to the moving object under test and affix a target mark on the area to be measured.
2. Apply power to the moving object and press the stroboscope's Measure Trigger Button.
3. Aim the Stroboscope light beam toward the marked area on the object under test.
4. Use the FINE and COARSE adjust knobs to synchronize or "stop" the motion of the object's mark. A single stationary image of the mark provides actual speed measurement data.

NOTE: Care must be taken to ensure that the mark is providing a 1:1 measurement. This is done by checking that there is only one mark and not two, four, or more stationary marks on the object under test. Two or more stopped marks indicate "harmonic" measurements (2:1, 3:1, 4:1, etc.) which provide a doubling, tripling, or quadrupling of the actual speed. A useful method of avoiding harmonic measurements is to adjust the FINE/COARSE knobs until two images (marks) appear and then lower the flash rate (via COARSE/FINE knobs) until a single, stationary image appears. This is the actual speed.

Inspecting a moving object

Measure the speed of a moving object as described above and move the FINE adjust knob alternately higher and lower to visually inspect all areas of the device.

PHOTO-TACHOMETER MEASUREMENT PROCEDURE

1. Select the Photo-Tachometer function by moving the Range/Function select switch to the PHOTO position.
2. Affix a small piece (approx. 0.5") of supplied reflective tape to the object under test.
3. Press the meter's Measurement Trigger button and align the Photo-Tachometer light source with the reflective tape mark on the moving object.
4. Wait until the Monitor Indicator appears in the upper left hand corner of the LCD indicating that synchronization has occurred.
5. Release the Measure Trigger button only after the reading has stabilized (approx. 2 seconds).

NOTE: To obtain better accuracy for low RPM measurements (less than 50 RPM) use more than one piece of reflective tape. Divide the meter reading by the number of reflective tape pieces for accurate measurement data.

MEMORY RECORD AND RECALL

The 461825 can record Maximum, Minimum, and Last Reading for the period of time during which the Measure Trigger button is held. These stored values can then be read directly on the meter's display. The memory will automatically erase after approximately 10 seconds of meter inactivity. Access the memory data immediately after the measurements.

1. Follow the instructions for normal operation.
2. Release the Measurement Trigger button.
3. Immediately press the Memory Recall button once to display the Last Reading taken during the measurement period. 'LA' will alternately display with the data reading to indicate 'Last Reading'.
4. Release and press the Memory Recall button again to display the Maximum reading taken during the measurement period. 'UP' will alternately appear with the data reading to indicate the Maximum reading.
5. Release and press the Memory Recall button again to display the Minimum reading taken during the 30 second test period. 'dn' will alternately appear with the data reading to indicate the Minimum reading.

Specifications

General Specifications

Circuit Custom LSI	microprocessor based design
Display Reversible,	0.4" (10mm) 5-digit (99999 count) LCD display
Measurement units	RPM (revolutions or rotations per minute)
Memory Recall Records/Recalls Max/Min/Last readings with memory push-button
Operating Temperature	32 to 122°F (0 to 50°C)
Operating Humidity	< 80% RH
Power Supply Four	1.5V 'AA" batteries (UM-3 or equivalent)
Weight 0.48 lbs.	(216g) meter only
Dimensions 8.2	x 2.8 x 1.9" (207 x 72 x 48mm)
Accessories Reflective tape and carrying case

Electrical Specifications

Measurement Range 5 to 99,999 RPM for the Tachometer100 to 100,000 FPM/RPM for the Stroboscope
Resolution 0.1 RPM (<1000 RPM) and 1 RPM (>1000 RPM)
Accuracy ± (0.1% + 2 digits)
Sampling Time 1 second (>60 RPM)
Photo Tachometer detection distance	2 to 6" (50 to 150mm) typicalNote: Detection distances up to 12" (300mm) are possible depending upon ambient light
Stroboscopic Flash rate 100 to 100	0,000 FPM (flashes per minute)
Stroboscopic Flash adjust range	Range A: 100 to 1,000 FPMRange B: 1000 to 10,000 FPMRange C: 10,000 to 100,000 FPM
Stroboscopic Flash tube type	High efficiency LED lamp
Stroboscopic Flash duration	60 to 1000 microseconds (approx. 16% of period)
Stroboscopic Flash Color	Orange

Warranty

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

Garantie

Copyright © 2013 FLIR Systems, Inc.

Copyright © 2013 FLIR Systems, Inc.