Quote:
Originally Posted by JMlegacy
Great thread Richard.
I'm interested in a DIY abnormal pressure detection failsafe
pressure too low > trip relay for failsafe
pressure too high > trip relay for failsafe
thing is, i don't know what device i can use for this. I'd much rather NOT use two hobbs switches for this.
Isn't there some device like a digital pressure sensor that can set two pressure points and trips if pressure is outside of this range?
I'd install the pick up at the nozzle
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Quote:
Originally Posted by JMlegacy
also, for boost threshold/trigger point, what switch can I use for that since the hobbs may not be suited to the high temps of engine bay?
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This set up should work well for a "single point" spray system where operational pressure is clearly defined. You can use an electronic pressure sensor but you need to build a high/low comparator circuit to make sensor of it.
Mechanical Pressure switch is prone to drift over time in the engine bay environment and seasons.