ugg italia Reflective scale _3001 instrument dials

Reflective scale instrument dials

Shooting light and the angle between the incident light angle mirror,[link widoczny dla zalogowanych], and 2 times the light points of light arms are offset amplification and other reasons, in practice, easy to adjust and calculated, using line angle changes the degree that more appropriate and more for intuitive and accurate. Reflecting the scale of instrument dials are generally 3 ways: first, uniform linear scale; the second is based on the actual scale of the change in the measured signal; third correction value based on the tangent scale. For multiple mirror devices (such as cable oscilloscope) Ka of the disk utility the best linear scale, while the single-mirror instrument dials, if the requirements of quantitative measurement, scale can be used after the 2 methods. Before the 2 scale is simple, a revised scale is to talk about the tangent method. According to the formula (1), if Y / LqEd,[link widoczny dla zalogowanych], a ~, may be considered = 1 / 2 · (Y / L month) (5) 『l. 7fj. 】 Jl1. O340. Y \L) 1 / 7 (Y /) + ... ...) a 1/ZfY/L) (1 share) (6) where = d a 1 / '3 (Y, / L) a 1, / 5 (Y / 'L) + l / 7 (Y /' L) + ... ... t called the angle error, which is when the reflection point along the dial offset changes, the corresponding angle relative to mirror 1 / 2 (Y. / L) straight-line deviation, it is the same with the offset error, if Y / 'LB less than 01t. according to (5) calculation} if Y / L is greater than 0.1. you must press (6) calculations. for different Y / LB, volume changes by Table 2, lap 4 obtained. offsets for the same points of light, the light the longer arm, the angle the smaller the error, as shown in Figure j in Table 3. Therefore, in order reduce the angle error, in addition to reducing the size of angle, but also can increase the optical arm length, but the long arm of light, the light spot changes drastic change is true, will increase the reading error. a revised scale for the tangent direction disk, because of its scale is non-linear scale, so the measurement process, must ensure that the adjustment of the initial angle is zero, otherwise the instructions will have a greater error. If it can not make the initial angle = 0, you can use positive and negative amidine initial angle to the method of elimination, the determination of the value of the signal light of a point offset to d, then use the commutator 04 changes in the governance of Figure 3 will be: reflective instrument dial scale 45 |. | }?, / f /,/,// more / table 3y, value (relative angle error) with light arms and light offset in the direction of the relationship between mm change signal to determine the value of the reverse signal with the shift points of light as d:, then t take the average of 2 side offset ((+ d) / Z) for the indicated value,[link widoczny dla zalogowanych], you can reduce the mirror is not parallel with the dial if the error caused by instrument for precision measurement of reflection, the most good use of circular dial. (Continued from page 16) is in the middle of the dial at the boundary, the first half of the week are positive indication 4.3.2 Remedy pointer at the end too light demolition pointer a. 2,[link widoczny dla zalogowanych], In its end of the welding of metal (tin, copper welding) or metal binder subsidies to increase the weight t weight after the end of the pointer 2, reinstall the pointer can change the display value 2 negative and then positive phenomenon before. b pointer at the end heavy demolition of the pointer 2, in its repair end of the file with a file to reduce the heavy weight or Original 2 in the head with a metal pointer welding (soldering tin or copper), subsidies to the metal binder can also be used to re-install after weight pointer 2, the value can be changed before the show, after being negative phenomenon. 4.4 Indication 4.4.1 unstable and the main fault-tolerance indication is due to instability in the general reaction of insensitivity caused by the pointer 2, the main Yinjia He passed the system is not working properly, have loose and friction from the indication I bow instability, often: a. pointer 2 and the scale cross-examine or ask somewhere friction jacket; b. Frame 3 t and spatial location does not collide and somewhere to create friction; c framework 3 5 and the shaft gear on the rack 4 contacts with Taiwan, not the location, less than 2 rotary dial pointer maximum load] 00N = 4.43 troubleshooting position pointer a. 2, uneven deformation dial l Straight or curved shaft gear 4, after the time t should be removed, such as on the platform with a rubber hammer to correct, restore straight friction can be eliminated. b frame 3 spatial location wrong, distorted or twisted. can be adjusted up and down to the framework of the 3 normal and turn the plane parallel to the time until the pointer 2. c. shaft gear 4, 5 rack positions with the right contacts, then you can adjust the pinch roller release l3 tighten the screws. adjustment increases with shaft gear units and rack 4 space and with the contact position, after the adjustment gap and asked when the contact position until the appropriate, and finally tighten the screws tighten. and then proceed to check: When the hand soft reduction of the pressure plate 2l, the pointer 2 to see whether the clockwise rotation, and can or slightly to l00N at some location, that is,[link widoczny dla zalogowanych], to meet the requirements.

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