Adjustment

Under adjustment is defined as the exact possible setting by an expert intervention. Preferably, the setting of a measuring device or its display.

The adjustment is for mechanical gauges often after collisions necessary or when the ambient conditions change significantly. For measurements that exploit the potential of a measuring instrument, frequent monitoring of the state adjustment is recommended.

Terms in metrology

Adjustment

After standardization in DIN 1319-1 adjustment is defined as follows: "Setting or adjusting a measuring instrument in order to eliminate systematic errors as far as it is necessary for the intended application. - Adjustment requires an intervention that changes the meter to change. "

During calibration, the measured value of an instrument on the known value of a measurement object used is adjusted (eg by comparison with a standard ). It is important to operate the meter under prescribed or agreed reference conditions ( external conditions such as temperature, position, etc.).

Under a slight readjustment is understood truncated or method, which is for example required in a constant temperature change.

With maladjusted refers to measuring instruments, measuring systems, sensors etc. that show so far corrupted values ​​that the deviations are outside the specified error limits.

Misaligned ( " disguised " ) gauges need to prepare the proper functioning of an expert engaged in the measurement system, which is usually a mechanical or electrical nature.

Calibration, calibration

The adjustment is distinct from the calibration, which is a calibration and is performed without opening the meter.

Where the use of calibrated measuring equipment is required ( Monitoring of measuring equipment ), a check must be performed and certified by the adjustment. In one associated with the calibration of determining compliance by a measuring instrument satisfies the requirements laid down, it is called in legal competence of calibration.

Examples

• Misaligned scale: calibration with test weight and interference with the mechanics of the scale, or with an adjustment program.
• Misaligned bubble: adjustment to the prescribed position by reacting the level indicator ( 180 ° rotation to approximately horizontal surfaces, or rotating the theodolite ) to 180 °. Half of the rash is with the rectification or adjustment screws removed (the other half is the inclination of the Document).

Adjustment of coins

In the production of coins was understood earlier under "Adjustment" the weight distribution balance of slightly overweight gold or silver blanks to the legally prescribed target weight within a small tolerance in the milligram range. This usually happened by filing off and continuous -weighing - manually coin for coin in the Mint, wherein the noble metal shavings collected separately, stored and were later remelted. Often the Justierspuren ( filing scores) were not always completely eliminated by the subsequent embossing process, so that they remained partially visible. This reduces but theoretically the collector value of such a coin is not, but rather guarantees the authenticity. In Münzauktionskatalogen is concerned with the coins in the description " low Justierspuren " or possibly "strong Justierspuren " specified, but then what leads consequently to a more or less large discounts. The afflicted with Justierspuren coin should not be confused with a " bekratzten ". Some coins of the 18th and 19th centuries the word " justi ( e) rt" explicitly is still in character. The modern Ronde production is from about 1870 already so weight, exactly, since the thickness of Zainblechbänder are almost to a hundredth of a millimeter, so that a specific manual adjustment is no longer necessary. It is therefore only re-weighed and incorrect weight blanks if necessary discarded prior to embossing, and remelted. See also Total weight, fine weight.