Characteristics of Japan Unitta u-507 sonic belt tensiometer

◆ features of mode u-507d with output connector

·The basic method [u-507 (standard machine)] is the common function of and.

·Due to the connection between the USB cable and the computer, the possible measurement results are indicated on the computer.

·It is possible to process the measured data by computer.

◆ common features of u-507d and u-507

·Current affairs pictorial LCD

·Rear light loading

·Unit mass value of pre installed belt

·Improved microphone performance

·Measurement frequency region expansion

·Enrich data selector function

·Automatic cancellation of dark noise adjusted according to vehicle gain

·The basic method of the previous model (u-505) was standard equipment

·Measurement of narrow space for coping

·Establish the 1 / Gigabit T system of the plotter

·Easy to carry lightweight • compact design

Common basic performance

◆ current affairs pictorial LCD

·Because the current affairs pictorial LCD uses a larger amount of information than before.

·At the same time, the tension value and cycle value can be confirmed.

·The comparison between the measured value and the standard tension value (generally the target) is possible.

·(belt only)

·Can confirm the input data at a glance.

◆ rear lighting loading

·According to the illumination after reloading on the liquid crystal display screen, the workability in dark positions is further improved.

◆ unit mass value of pre installed belt

·For previous models (u-505), the unit mass value of each belt type is entered manually, and the unit mass value of u-507 only specifies the belt type, which is represented by one engine. (you can also enter manually)

·30 kinds of timely belts and 16 kinds of V-belts have been input.

◆ improved microphone performance

·Improved microphone sensitivity in the low frequency domain. Because of the long wing spread of large belts, it can exert its power.

◆ expansion of measurement frequency area

·For the previous model (u-505), the upper limit of the measurement frequency is 1000Hz. According to the conversion, it is possible to make a stove with 5000Hz. And so on, the measurement of the high-frequency wave region of the short wingspan of the belt and copper wire is powerful.

◆ enrich the data selector function

·The data selector function (u-505) of the previous models to remember the input data is expanded from 10 to 20.

◆ automatic cancellation of dark noise adjusted according to vehicle gain

◆ the basic method of previous models (u-505) is standard equipment

·Auto trigger function

·Due to the protection of input data adopted by eep-rom

·Energy saving of disconnection function according to vehicle capacity (automatic power off for about 5 minutes)

·Standard microphones are used with u-305 • u-505 series

◆ establish the 1 / Gigabit T system of the plotter

·Because ISO9000 is necessary to obtain a system that can be issued by checking the score sheet and 1 / Gigabit t certificate of the plotter

·Measuring principle of belt tension

◆ summary

·If the impact is added to the belt stuck between the pulleys, the belt vibrates in an irregular wave shape containing high-frequency wave components and impact components, and then the belt moves in a regular wave shape. In order to reduce the vibration in a short time and the occurrence of the vibration of higher number components, it is difficult to grasp the cycle of the basic wave shape in the past. However, due to the development of independent data processing to capture and control the vibration frequency of microcomputer, this is realized. The correct tension value is expressed according to the formula included in the program.

● vibration attenuation of toothed belt

◆ measurement sequence

·Gain adjustment (automatic cancellation of dark noise)

Periodically measure the surrounding noise environment after power input and before pressing the "measure" button, and automatically adjust the sensitivity of the microphone. The sensitivity button of the microphone after "measure" is fixed and pressed.

·Detection of vibration wave shape: find out the sound wave caused by bouncing the stationary belt with fingers, etc. according to the microphone.

·Noise components are eliminated automatically according to the built-in filter.

·Determination of cycle

According to the cycle measurement circuit, the measurement cycle of each bicycle with wave shape is input.

·Signal processing

Due to the data processing established by the simulation, the basic wave shape is determined because of the different vibration wave shape types under each condition.

·Frequency conversion deals with continuous stable wave shape.

·Tension test conversion processing

·Convert the belt tension according to the unit weight • width • span length of the belt to be measured input with the number keys.

◆ calculated tension value: to = 4 * m * w * s 2 * F 2 * 10 - 9 n

·M: unit mass (for belt: g / 1m length * 1mm width, for each copper wire: g / 1m length)

·W: width (if it is a belt: if the belt width is copper wire placed in mm unit: '1' means "1" input)

·S: measure the span length (mm)

·F: the number of natural vibration of the belt measured by the sensor (Hz)

·Choose

◆ horizontal arm microphone

·Because there is a microphone on the side of the microphone, it is possible to measure the narrow position between the back of the belt and the seam of the machine.

·The total length of the microphone is 170mm

◆ long arm microphone

·The standard microphone (170mm in total length) and the long type of the opposite arm (350mm in total length) are prepared. It is also possible to measure the belt located in the machine.

◆ electromagnetic sensor (planned for sale in April 2006)

·It is often pasted, even if the copper wire • belt • core wire of the belt does not have an "impact" on the inherent swing number. The thin magnetic film is possible due to the measurement of the number of digits and magnetic dyes.

·In addition, the noise (dark noise) in the measurement environment is not completely affected by.

·Please consult the company for details.

◆ code microphone

·It is possible to measure the belt located in the next machine. (total length 1m)

·※ all u-505 and u-305 can also use selective microphones.

·U-507 (standard machine)

·U-507d (with output connector mode)

features

·LCD screen of current affairs pictorial, with backlight, 46 belt types and pre installed vehicle gain adjustment per unit mass, 20 kinds of set value memory, vehicle trigger and vehicle capacity disconnection function

·It is possible to process the data of tension value by computer and Internet

·Basic methods, standard machines and common

·Measurement range: 10Hz - 5000Hz

·Power supply alkali dry battery (single 4 * 2)

·Overall dimension

·Width 59 * thickness 26 * length 160mm

·Mass 120g

subsidiary

·Arm microphone

·Walking condition

·Alkali dry battery (single 4 * 2)

·Arm microphone

·Acoustic microphone (coded)

·Walking condition

·Alkali dry battery (single 4 * 2)

·USB cable (1.8m)

·Measurement case

·Example 1: attached tooth belt

·[8yu tooth shape * 20MM width, wingspan length 250mm]

·Input value: M = 5.2 (g / unit mass per mm * m length)

·W = 20 (mm width), s = 250 (mm span length)

·Relationship between tension value (n) and cycle value (Hz): 2.6 n / 10Hz - 9360n / 600Hz

·Example 2: V-ribbed belt

·[micro V / PK section * 5 ribs, wingspan length 250mm]

·Input value: M = 21.0 (g / unit mass of each rib * m length)

·W = 5.0 (number of ribs), s = 250 mm (span length)

·Value of tension (9463 n / cycle): 10hz-600n / cycle

·Example 3: steel copper wire

·[ φ 0.6mm steel copper wire, if the span length is 50mm]

·Input value: M = 1.3 (g / unit mass per m length)

·W = 1.0 (because 1 piece is placed in 1), s = 50 (span length)

·Relationship between tension value (n) and cycle value (Hz): 0 N / 10Hz - 325 n / 5000Hz

·Japan Unitta u-507 sonic belt tensiometer: Japan Unitta u-507 belt tensiometer model: u-507 belt tensiometer brand: Unitta u-507 belt tensiometer origin: Japan