Yong Heng gauge went BOOM!

I was filling a tank. It was up near 300 bar and I heard a big pop. The circuit breaker blew. And ran over and saw this.

YongHeng - 1 1.1652057262.jpeg


Got a new one coming via eBay so not down and out for too long.
 
Reason # one million and one why you should always wear eye protection when doing anything even remotely near high pressure. Glad you're ok man

Yeah man - I'm good thanks. Thankfully I wasn't in the same little bathroom as the YH or I mighta taken it in a body part. I heard the gauge hissing after the pop, so I'm pretty pos the pressure made it blow.
 
That probably woke up people.

BUT ! try the same on a car sized AUX engine in a ship and with the fuel pressure gauge, and the damn thing burning MDO and not sweet pure diesel,,,,, and you are in for a cleanup.

And then do that almost every month and if you are the one that have to put on a new gauge,,,,, and clean the immediate surroundings,,,,,, no fun at all, and you start to curse engineers and gauge makers.

And you start to second guess yourself as it was after all you that put on that gauge, even if there are not really any way to put on that gauge wrong.
 
I believe TheIceman above is probably correct. The gauge probably was shaken to failure, shorted to pressure tube and burned a hole in it. There is of course a cheap relay inside that is also beaten to death as well. If I need my YH again, I’ll change the wiring and eliminate that part. It’s not worth the risk imho, pretty much destined for failure.