velleman DTO6234N Digital Tachometer User Manual
- June 4, 2024
- Velleman
Table of Contents
DTO6234N
DIGITAL TACHOMETER
**USER MANUAL
**
DTO6234N
Introduction
To all residents of the European Union Important environmental information
about this product
This symbol on the device or the package indicates that disposal of the device
after its lifecycle could harm the environment. Do not dispose of the unit (or
batteries) as unsorted municipal waste; it should be taken to a specialized
company for recycling. This device should be returned to your distributor or
to a local recycling service. Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for choosing Velleman! Please read the manual thoroughly before
bringing this device into service. If the device was damaged in transit, do
not install or use it and contact your dealer.
Safety Instructions
| Warning! Visible laser radiation. Avoid exposure to beam. Class 3R
laser product.
output power: < 5 mW
wavelength: 630-670 nm
EN60825-1:1994+A1+A2
---|---
Never point the laser beam at a person or animal. Never point the laser beam
at reflective surfaces. Never look at the laser beam using an optical
instrument, such as binoculars or a microscope.
| Keep this device away from children and unauthorized users.
| Keep this device away from rain, moisture, splashing and dripping liquids.
Never put objects filled with liquids on top of or close to the device.
General Guidelines
Refer to the Velleman® Service and Quality Warranty on the last pages of this manual.
-
Keep this device away from dust and extreme temperatures.
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Protect this device from shocks and abuse. Avoid brute force when operating the device.
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Familiarise yourself with the functions of the device before actually using it.
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All modifications of the device are forbidden for safety reasons.
Damage caused by user modifications to the device is not covered by the warranty. -
Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
-
Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not accept responsibility for any ensuing defects or problems.
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Do not switch the device on immediately after it has been exposed to changes in temperature. Protect the device against damage by leaving it switched off until it has reached room temperature.
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Readings may be affected if the unit is operated within a radio frequency electromagnetic field, but the performance of the instrument will not be permanently affected.
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Use the original packaging if the device is to be transported.
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Keep this manual for future reference.
Overview
Refer to the illustrations on page 2 of this manual.
| 1 | reflecting tape strip |
|---|---|
| 2 | laser beam |
| 3 | display |
| 4 | MODE button |
| 5 | MEAS button |
| 6 | 6 VDC input |
| 7 | MEM button |
| 8 | battery compartment |
Battery
WARNING Do not puncture batteries or throw them in fire as they may
explode. Do not attempt to recharge non-rechargeable batteries (alkaline).
Dispose of batteries in accordance with local regulations. Keep batteries away
from children.
- The battery symbol is displayed when the batteries need to be replaced (battery voltage < ± 5 V). Open the battery compartment and remove the old batteries.
- Insert 1 x 9 V battery. Faulty installation can permanently damage the device.
- Remove the batteries if the device is not to be used for some time.
WARNING
Remove the batteries if you are no longer using the device or if the device is
left unused for an extended period of time.
Remove used batteries promptly.
Operation
Attach a small strip of tape to the target surface. Press the MEAS to switch
on the tachometer. Select whether to measure the RPMs (RPM) or the revolutions
(REV) with the MODE button. Point the tachometer at the strip of tape and hold
the MEAS button pressed.
The indicator should appear on the display when you point the beam at the
strip of tape.
Memory Button (MEM)
The last measured RPM value is automatically stored in the memory.
Refer to the illustration on page 3 of this manual.
Three values are stored in the memory: Press the MEM button to display the
maximum value, the minimum value and the last measured value respectively.
Measuring Tips
Reflective Tape (Velleman DTO-RS/10, optional)
Cut a square of tape of ± 1 cm² and attach it to the target surface.
- The piece of tape should never cover more than half of the target area.
- A target surface that is reflective of its own accord should be painted black or covered with black tape prior to applying the tape.
- Make sure the target surface is smooth and clean when you apply the tape.
Measuring Low RPMs
It is fairly easy to measure fast speeds. When measuring extremely low rpm’s
you would do well to apply several squares of tape to the target surface. You
can then divide the displayed value by the number of squares.
Also note that this technique makes for more precise measurements as the
measuring error is now also divided by the number of squares of tape.
Cleaning and Maintenance
- The IR sensor is the most delicate part of the device and it shall be kept clean at all times. To do this, only use a soft cloth or cotton bud with a little water or medical alcohol.
- Allow the lens to fully dry before using the device.
- Wipe the other parts of the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.
- Do not submerge the device in water or any other liquid.
- There are no user-serviceable parts. Contact your dealer for spare parts if necessary.
- The device shall be stored between –20° C and +65° C (–4° F to +149° F).
Technical Specifications
accuracy ……………………………………………….. 0.05 % resolution
2 to 999.9 RPM …………………………………. 0.1 RPM
1000 RPM ……………………………………….. 1 RPM
sampling time …………………………………………….. 0.5 s
detecting distance ………………………………. 50-500 mm
total test range ………………………………………. 2-99999
power supply
1 x 9 V 6LR61 battery (incl.) external power adapter 6-9 VDC (not incl.)
power consumption ………………………………… ± 45 mA
operating temperature ………………………………. 0-50 °C
dimensions ……………………………….. 160 x 58 x 39 mm
weight …………………………………………………….. 160 g
Use this device with original accessories only. Velleman nv cannot be held
responsible in the event of damage or injury resulting from (incorrect) use of
this device. For more info concerning this product and the latest version of
this manual, please visit our website
www.velleman.eu. The information in
this manual is subject to change without prior notice.
© COPYRIGHT NOTICE
The copyright to this manual is owned by Velleman nv. All worldwide rights
reserved. No part of this manual may be copied, reproduced, translated or
reduced to any electronic medium or otherwise without the prior written
consent of the copyright holder.
Velleman® Service and Quality Warranty
Since its foundation in 1972, Velleman® acquired extensive experience in the
electronics world and currently distributes its products in over 85 countries.
All our products fulfil strict quality requirements and legal stipulations in
the EU. In order to ensure the quality, our products regularly go through an
extra quality check, both by an internal quality department and by specialized
external organisations. If, all precautionary measures notwithstanding,
problems should occur, please make appeal to our warranty (see guarantee
conditions).
General Warranty Conditions Concerning Consumer Products (for EU):
- All consumer products are subject to a 24month warranty on production flaws and defective material as from the original date of purchase.
- Velleman® can decide to replace an article with an equivalent article or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion. You will be delivered a replacing article or a refund at the value of 100% of the purchase price in case of a flaw occurred in the first year after the date of purchase and delivery, or a replacing article at 50% of the purchase price or a refund at the value of 50% of the retail value in case of a flaw occurred in the second year after the date of purchase and delivery.
- Not covered by warranty:
- all direct or indirect damage caused after delivery to the article (e.g. by oxidation, shocks, falls, dust, dirt, humidity…), and by the article, as well as its contents (e.g. data loss), compensation for loss of profits;
- consumable goods, parts, or accessories that are subject to an aging process during normal use, such as batteries (rechargeable, non-rechargeable, built-in or replaceable), lamps, rubber parts, drive belts… (unlimited list);
- flaws resulting from fire, water damage, lightning, accident, natural disaster, etc.…;
- flaws caused deliberately, negligently, or resulting from improper handling, negligent maintenance, abusive use, or use contrary to the manufacturer’s instructions;
- damage caused by a commercial, professional or collective use of the article (the warranty validity will be reduced to six (6) months when the article is used professionally);
- damage resulting from an inappropriate packing and shipping of the article;
- all damage caused by modification, repair or alteration performed by a third party without written permission by Velleman®.
- Articles to be repaired must be delivered to your Velleman® dealer, solidly packed (preferably in the original packaging), and be completed with the original receipt of purchase and a clear flaw description.
- Hint: In order to save on cost and time, please reread the manual and check if the flaw is caused by obvious causes prior to presenting the article for repair. Note that returning a non-defective article can also involve handling costs.
- Repairs occurring after warranty expiration are subject to shipping costs.
- The above conditions are without prejudice to all commercial warranties.
The above enumeration is subject to modification according to the article (see article’s manual).
Made in PRC
Imported by Velleman nv
Legen Heirweg 33, 9890 Gavere, Belgium
www.velleman.eu