Hi all,
we have a fairly old (2001 model) Melag Autoclave, and today it caused the breaker to pop when it was powered up. I was actually in the process of investigating errors on its vacuum test when it completely malfunctioned. It was consistently tripping the breaker, or the RCD plug that I was using.
I isolated each of the parts and identified that it was actually the pressure sensor that was causing a residual current between its 24 V DC line and ground and tripping out. However its a sealed unit, and it doesn't look like I can get inside it, other than for post mortem purposes.
The pressure sensor appears to be a tecsis 3296.073.149 which uses a 24 VDC line as power, and providing a DC 0-10 V over 0..4 bar for its signal.
http://www.yuden-tech.com.cn/catalog/tecsis/3296.pdfhttp://www.farnell.com/datasheets/320169.pdfUnfortunately I can't find anywhere that stocks that part. The nearest thing I can find is this;
http://uk.rs-online.com/web/p/pressure-sensors/0178695/however that is quite pricey, and is going to be about 140 GBP including shipping. I was wondering if I have any other options... to get a 10 V DC signal for 0..4 bar
Cheers,
Tom