SU1267311A1 - Method of calibration checking of measuring devices - Google Patents

Abstract

The invention relates to the field of measurement technology. Can be used when checking measuring devices. The purpose of the invention is to improve the accuracy of verification. , Essence. The proposed method is as follows. The main measure, made ungraded, the device pointer is set on a permanent mark. Connect an additional measure in the main counter and set the device pointer to the previous mark. This process is repeated until the pointer is set at the point being checked and the total number of divisions of the additional measure, the price of which is greater than or equal to the price of the point of the device being turned. The error of a device is defined as the product of the private as a result of dividing the price of dividing an additional measure by the number of pointer installation cycles and the difference between the sequence number of the Achieved mark of the additional measure and the number of pointer installation cycles. Achieving the goal is accomplished through the implementation of a cumulative (L error calculation algorithm. The described method is carried out for all of the turnable marks: first with their successive increase, then with decreasing. S a 00

Description

The invention relates to a measuring technique and can advantageously be used in the calibration of measuring devices.

The purpose of the invention is to improve the accuracy of verification due to the implementation of the cumulative error calculation algorithm.

The method is carried out as follows.

The main measure that is performed non-graded, the device pointer is set to a check mark. Then, an additional measure, the cost of dividing which can be equal, is an integer number of times lower or higher than the dividing price of the device being turned on, which is switched in opposite to the main one, the device pointer is set to the level preceding the one being turned. If it is agreed that the prices for dividing the instrument to be checked and the additional measure are equal, then after setting the signal pointer;

B, A, + YES, where AJ is the price for dividing the unit

devices; uAi - absolute error in

check mark. Then, by rebuilding the main measure, the device pointer is again set at a permanent mark, i.e., e, the compensation of the entered decrease is compensated. After this additional measure, the pointer is again placed on the mark preceding the one being checked. The signal at the output of the additional measure is

 . ±

Yes

I + AJ + AAj,

AT,

The considered process is repeated until the pointer is installed on the previous calibrated mark with an additional number of C divisions of the scale in addition to measures. The signal at the output of the additional measure becomes equal to

in „: f. BUT". + f; YES,; ,

1 1 1-1 or this expression can be rewritten

kind of

  A ;; п + bAni,

where C is the number of completed divisions

scales of an additional measure; n - the number of cycles performed

install pointer. From the analysis of the expression obtained, it follows that due to the error

2673П2

measuring device number of installation n becomes greater (if the error is negative) or less (if the error is positive) the number of completed divisions of the additional measure. The magnitude of their difference is determined by how many times the value of the error fits into the division price of the additional measure. It should be noted that the exact determination of the error by the proposed method is possible only when the multiplicity of the division price of the additional measure and the magnitude of the error,

To obtain a specific averaged value of the absolute error of the measuring device, it is necessary to find the product of the particular

20 from dividing the price of dividing the additional measure A by the number of completed installation cycles of the indicator n and the difference between the sequence number of the achieved mark of the additional measure C and the number of completed cycles; installation kazatel ,, t about e,

A, C-A, p + lAp,,

v- I

AjC-n) it DA ;,

i-i

il1

P

The proposed verification process is carried out for all calibrated marks: first with their successive increase, then with a decrease.

Claims (1)

Invention Formula The method of calibration of measuring devices based on the use of primary and secondary measures connected to the input of the device, characterized in that, in order to improve the calibration accuracy, the main meru is additionally connected and the measuring device pointer is set on a measurable mark, an additional mera is connected to the main and set the pointer of the instrument to be checked to the previous mark, the process is repeated until the measuring instrument pointer is installed by the verified mark and the whole number of divisions of the additional measure, the price of which is greater than or equal to the division value of the turned-on device; 1267311 the error of the device is determined. ki of the pointer and the difference between the order of the quotient of the particular number of the number reached at the doni mark of the dividing value of the additional measure and the number of completed cycles of the established pointer setting cycles.