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Indication

3 1/2- vs. 4-digit digital indicator – What is a 1/2 digit?

Anna Zeitler | Know-how
Digital indicators with different digits

Besides 3- and 4-digit digital indicators, there are also 3 1/2-digit indicators available in the market. But what is a 1/2 digit? A full digit can indicate all numbers from “0” to “9”. A 1/2 digit, in contrast, can only display a “1”, a number …

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Integration of pressure sensors into the PLC

Stefan Heusel | Know-how
illustration: Integration of pressure sensors into the PLC

The construction of a traditional current loop for the capture of pressure sensor signals has its pitfalls – especially when not only a signal must be transmitted to the PLC, but also a local indicator has to be integrated. Let's have a look at the example of a …

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Connection of an Ex nA digital indicator to an Ex i sensor

Stefan Heusel | Know-how
correct connection Ex nA

Is it possible to connect a non-incendive Ex nA digital indicator to an intrinsically safe Ex i sensor in hazardous areas? Very often, signals from pressure sensors that do not have a built-in digital indicator for the measured value are connected to external digital …

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Characteristics of the display of a digital indicator

Anna Zeitler | Know-how
LED display with 4 digits

The characteristics of the display are an important selection criterion when deciding on a digital indicator. Here, there are different points that must be considered: 1. The number of segments This concerns the segments used to display the numbers. The …

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Benefits of the LED display of the pressure switch PSD-30

Jürgen Reiser | Pressure
PSD-30 with LED display

The most important customer requirements for an instrument display are: durable, robust, and good readability of the active pressure even from a distance of up to 3 m, even in poor light conditions. Red LED displays are still the most widely used technology in the …

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Welcome to the WIKA blog

In our English-language blog you can expect many interesting articles on pressure, temperature, level, force and flow measurement, and also on the subject of calibration technology. Furthermore, there are various insights into the world of the WIKA group of companies – seen from different angles.

Most-read articles
  • Difference between gauge pressure and absolute pressure measurement
  • Pt100 in 2-, 3- or 4-wire connection?
  • Differences between G1/4″ threads
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