osCommerce My Account  Cart Contents  Checkout  
  Top » Catalog » Measurement Instrument » Tensionmeter » U-508 My Account  |  Cart Contents  |  Checkout   
Health Instrument-> (12)
Laboratory Instrument-> (88)
Maintenance/Engineering Instrume-> (221)
Measurement Instrument-> (450)
  Absolute Digimatic Caliper (2)
  Ball Gage kit (1)
  Bench Center (4)
  Benchtop Checkmaster (1)
  Bevel Protractor (4)
  Bore Gauge (1)
  Can Seam Micrometer (2)
  Combination Square Set (1)
  Crankshaft Guage (1)
  Depth Gauge (8)
  Depth Micrometer (1)
  Dial Caliper Gage (5)
  Dial Gauge (2)
  Dial Indicator (14)
  Dial Sheet Gauge (1)
  Digimatic Carbon Fiber Caliper (1)
  Digital Brake Gauge (1)
  Digital Height Gauge (5)
  Distance Meter (12)
  Filler Gauge (8)
  Force Gauge (31)
  Gas Leak Detector (1)
  Gauge Block (5)
  Granite Inspection Plate (3)
  Height Gauge (6)
  Holtest/ Borematic (2)
  Inside Micrometer (3)
  Level Meter (3)
  Magnifier (2)
  Measuring Wheel (3)
  Metal Detector (1)
  Micrometer (21)
  Micrometer Stand (3)
  Outside Dial Caliper (1)
  Outside Micrometer (3)
  Pin Gauge (7)
  Pitch Gages (2)
  Portable Digital Refractometer (2)
  Precision Level (3)
  Radius Gauge (1)
  Ring Gauge (1)
  Shop Microscope (60X)
  Stop Watch (8)
  Taper Gauge (8)
  Telescoping Gage Set (1)
  Tensionmeter (35)
  Tesla Meter (8)
  Thickness Gauge (140)
  Three Point inside Micrometer (2)
  Vacuum Gauge (1)
  Vernier Height Gages (2)
  Welding Gauge (11)
  Vernier Caliper (19)
Process Insrument-> (439)
Safety Intrument-> (255)
Weigh Scale and Load Cell (60)
What's New? more
Hot Wire Anemometer “Benetech” Model GM8903
Hot Wire Anemometer “Benetech” Model GM8903
Quick Find
Use keywords to find the product you are looking for.
Advanced Search
Tell A Friend
We'd love it if you tell a friend about us Just enter their email address and click the envelope (you can also add a messege on the next page).
Shipping & Returns
Privacy Notice
Conditions of Use
Order & Payment
Contact Us
SSL Certificate
Free SSL Secured By StartCom
Sonic Belt Tension meter "Unitta" Model U-508

Sonic Belt Tension Meter





§  The 500 latest results are retained for record keeping.

§  Exporting the results to PC is possible. (Note: Operate only Japanese Microsoft Windows Vista/7/8)

§  Judgment functions of the result. Utilizing the equipped application U-508 for PC, before hand, you can set up both upper and lower limit; therefore you can easily find out the result.


Measurement principle of U-508

When we make a belt between pulleys vibrate by giving impact, it starts to oscillate irregularly, but

gradually it oscillates inherent regular moves. In the past, there was no easily implemented device

which could catch these small waves. We succeeded in catching the period of wave pattern relatively

easily by developing a data handling method to capture the vibration frequency that made full use of

microcomputer. As for the system, sensor detects the vibration waveform; microcomputer calculates

the character vibration number by processing the data. It can measure tension value more accurate

than calculation formula in the program. Patent:No.1931781


Measurement Step

1.   Gain adjustment (Automatic canceling of background noise)

     This unit measures the surrounding noise environment periodically after power-on unit pressing of

     “MEASURE” button, and automatically adjusts the sensitivity of sensor. Press “MEASURE” button of

     fixing the sensitivity of sensor.

2.   Detection of vibration waveform

     The sensor detects sonic wave which was generated by flipping the static belt with a finger.

3.   Removal of noise component

     Self-contained filter automatically removes noise component.

4.   Measurement of cycle

     Cycle measurement circuit measures every cycle of input waveform.

5.    Signal processing

     Measures basic waveform by oscillation pattern which differs from condition to condition by data

     processing established in simulation.

6.   Frequency conversion process

     Converts continuous stable waveform into frequency.

7.   Tension calculation process

     The unit converts belt tension when unit weight, width, and span length of corresponding belt are

     input with numeric key.


Calculation: To = “4 x M x W x S2 x f2 x 10-9

 To : Tension

W: Belt width or number of ribs (wires) (mm/R)

  M: Unit mass (g/mm width x m length)

S: Measured span length (mm)


f: Horizontal characteristic frequency (Hz)


Sonic Belt Tension Meter U-508

Model name



Model number



Measurable range

10Hz ~ 5,000Hz



Alkaline battery (Triple A type x 2 pieces)









Flexible type sensor (TM-AMM)

Soft case for carrying

Two triple A batteries

USB cable is not attached




This product was added to our catalog on Tuesday 16 October, 2018.
Shopping Cart more
0 items
Manufacturer Info
Other products
Notifications more
NotificationsNotify me of updates to Sonic Belt Tension meter "Unitta" Model U-508
Tell A Friend
Tell someone you know about this product.
Reviews more
Write ReviewWrite a review on this product!
Thai English
Credit card accepted


Nanomachinery Co., Ltd.
4, Soi Petchkasem 100 ,Phetchkasem Rd. ,Bangkaenue ,Bangkae ,Bangkok, 10160, THAILAND.
Tel : 086-322-6876 ,02-421-9927 ,Fax : 02-809-2591 E-mail : pongthorn@nano-machinery.com
Copyright © 2005 Nano Machinery
Powered by Nano Machinery