PRESSUREGAUGEONLY LOGO.png

I�C was made to communicate over short distances between printed circuit boards and is a simple, 8-bit serial data bus. In the meantime, it isn’t only PCB-mountable pressure sensors that use the I�C signal for data transfer, but also pressure sensors remote from customer electronics.
Remote sensors usually have the advantage of being less sensitive to contaminated or aggressive media and having the capacity to measure directly at the procedure. Regarding sensors mounted directly on the circuit board, the sensor element is, in many cases, exposed right to the medium. With remote sensors, steel or ceramic generally serve as the wetted surface.
I�C circuit
The I�C bus, alongside the two supply lines, requires only two further lines:
SCL (serial clock line)
SDA (serial data line)
Additional possibilities through I�C
The I�C bus is really a well-known standard in electronics, offering additional possibilities for communication with a pressure sensor than having an analogue signal:
In the info protocol, in addition to the pressure value, a temperature value and diagnostic information (for instance an integrity test of the data transfer) can be transmitted via a status byte.
Several pressure sensors can be linked to a bus line as ?slaves? to the client electronics that functions as a ?master?.
On the customer side, as opposed to using pressure sensors with analogue signals, the analogue-to-digital conversion of the pressure value for further signal processing is unnecessary because the pressure value is already present in digital form. This contributes to faster and easier signal processing.
The electronics for communication could be built with standard components easily available on the market.
Often, I�C signal pressure sensors are also optimised to take less energy, making them ideal for battery-powered applications. In the WIKA portfolio, for instance, this pertains to the MPR-1 pressure sensor module.
Boundary conditions with the use of I�C
Since I�C isn’t a fieldbus, long wire lengths are not recommended. The maximum wire length depends, at length, on the operating environment and the corresponding disturbing influences. I�C communication is most beneficial used in projects where in fact the pressure sensor or the pressure sensor module is built-into the customer product and thus protected against external influences. ไดอะแฟรม will also be noted that with any digitally processed signal, the response time because of discrete-time sampling will undoubtedly be somewhat slower than for an analogue, continuous signal.
Note
Your contact person will undoubtedly be happy to help you with any further questions on digital interfaces.
Distributed Intelligence
Distributed Intelligence on the integration of pressure sensors into hydraulic systems
Fill below form and we’ll send you the whitepaper ?Distributed Intelligence?.
Name
Company
E-mail
Send
We?re committed to your privacy. We?ll use your details to get hold of you about our products. E mail us at socialmedia@wika.com to revoke your permission to utilize your information.