Sensorik fuer Oeltemperatur | Posts 48+

Okay, here's the translation:

'Again: VW partially coats the parts, and during a regular oil change, they normally replace the entire screw.' Exactly for that reason.

Greetings.

MikeF wrote:

Again: VW partially coats the parts, and during a regular oil change, they normally replace the entire screw. Exactly for that reason. Greetings

Define normal

Hello everyone,

Especially after Ulf's story and all my own considerations about isolation, I've now come around to Dieter's idea (thanks again, @Dieter!).

To the metal experts: Do you consider a soldered brass tube to be risky due to the electrochemical series?

It will eventually replace the probe. Therefore, it shouldn't touch anything or come into contact with metal anywhere, and the guide above is made of plastic.

Best regards,

Jan.

P.S.: If I'm finished and anyone is interested, I'll write a report.

Hello everyone,

And so, I continue to flood this thread with my posts.

How do you like the level sensor at the bottom of the pictures? http://members.aol.com/wernersmail/werners-2cv6/Tipps___Tricks/tipps___tricks.html It's self-built based on Dieter's idea and suggestions from the website, using a brass tube from the hardware store (1 Euro and a bit), a PT100 sensor from Conrad (5 Euros and a bit), two silicone measurement hoses (1 Euro each), and a little bit of silicone for insulation. Since I already had this strange probe device from Conrad, I took it apart and reused some of its components (see pictures).

The internal workings weren't straightforward because a 4 mm tube is quite narrow, so the initial idea of isolating the sensor and solder joints with silicone and then inserting everything didn't work. Instead, I inserted it without any insulation, then pushed some silicone in behind it with pressure, and then soldered it in place. I wasn't sure if it would actually work, but it held up during the soldering process and all the tests (boiling water, etc.).

The response time is excellent - when I hold the cold rod in boiling water, I see the corresponding reading after just 10 seconds.

As I said, I can provide more detailed information if needed.

Later, I'll use a file to create the markings, and then everything will be correct.

Best regards,

Jan.

'Normal' means that the screw replacement is intended. During the service, Fritzi wants to replace the O-ring, but discovers that it's not available individually, so she reuses the old screw because the new one is not in stock. It also happens .