Page top

Building Automation


Industrial Automation


Power Automation & Safety

Bangladesh Distributor

Lead Contents

FAQ00705 of Digital Panel Indicators FAQ

FAQ No. FAQ00705

Primary Contents

Question

What is the measuring accuracy when measuring circumferential speed with the K3NR Digital Panel Indicator?

Answer



The measuring accuracy for K3NR operating mode 1 (rotational/circumferential speed) is ±0.006% rdg ±1 digit. If the variation of input pulses is not considered, the error depends on the number of significant digits displayed below the decimal point. The error is the error in the read value.

Example 1: Error When Displaying 85.000 km/h


Calculation: 85.000 km/h × (0.006%) = ±0.0051 km/h

In this case, three digits are displayed below the decimal point, so the fourth digit below the decimal point in ±0.0051 km/h is rounded off to yield an accuracy of ±0.005 km/h. There is also an error of ±1 added to the rightmost digit (±0.001 km/h) for a total error of ±0.005 km/h ±0.001 km/h = ±0.006 km/h. Consequently, the display may vary between 84.994 and 85.006 km/h.

Example 2: Error When Displaying 85.00 km/h

Calculation: 85.000 km/h × (±0.006%) = ±0.0051 km/h

In this case, two digits are displayed below the decimal point, so the third digit below the decimal point in ±0.0051 km/h is rounded off to yield an accuracy of ±0.01 km/h. There is also an error of ±1 added to the rightmost digit (±0.01 km/h) for a total error of ±0.01 km/h ±0.01 km/h = ±0.02 km/h. Consequently, the display may vary between 84.98 and 85.02 km/h.

Example 3: Error When Displaying 85.0 km/h


Calculation: 85.000 km/h × (±0.006%) = ±0.0051 km/h

In this case, one digit is displayed below the decimal point, so the second digit below the decimal point in ±0.0051 km/h is rounded off to yield an accuracy of ±0.0 km/h. There is also an error of ±1 added to the rightmost digit (±0.1 km/h) for a total error of ±0.0 km/h ±0.1 km/h = ±0.1 km/h. Consequently, the display may vary between 84.9 and 85.1 km/h.

Recommended Products

K3HB-X

A Process Indicator Ideal for Discriminating and Displaying Measurements for Voltage/Current Signals

E5CN-H

A New High-performance Controller: High Resolution, High Speed, and High Input Accuracy. Logic Operations and Preventive Maintenance Function.

H5CZ

Easy to Use and Easy to Read.

Other Digital Panel Indicators FAQ