Recent content by Dullard

My Grandfather use to say "If it works, don't F@!%$ with it." This is one of those situations. Grandpa never worked on spacecraft.

Good Luck. It will make perfect sense (once you figure it out).

The 2 leading possibilities: 1. A cable defect (marginal) between the Tstat and the AC 2. An intermittent defect at the main contactor coil. I've seen both (standing in my backyard at 2:00 AM in my underwear). While not always the case, these kind of intermittent AC issuers are often related...

I can think of no reason (theoretically) that you couldn't use O-rings in a static application with the 'gentled' rectangle that you describe. The issue is: Any 'differences' along the O-ring (from the POV of the O-ring) in terms of groove geometry or clearance with the mating surface will...

I'm not going to do the experiment. Assuming nothing exotic about the water supply, best flow will be accomplished with the hose just above/at present water level. As you've already noted, there is no static pressure advantage to submerging the hose and the exit back-pressure (dynamic) will...

Sadly, you can't generally assume whether a generic 'percentage' is volume, mass, or whatever. Units matter. I use '%wt' and %vol' to prevent confusion (and collisions with Mars).

"Same Voltages" is the tricky part of this question. If your single-phase supply is 120 VAC (L-N) and your 3-Phase supply is 120 VAC (L-N) [A.K.A. '208'], then the answer is 'yes.' 120*I : 3*120*I = 208*sqrt(3)*I.

You're describing 'static friction.' There is no fluid equivalent.

I agree with Rive. I would add: Precision is cheap - accuracy is expensive. This thing is probably OK as a gross detector. If it shows 'some' CO, I wouldn't assume that the number on the display is particularly close to the actual concentration.

There are a couple of reasonable possibilities - neither of which involves the magnets: 1. The kind of sensor typically used in a hand-held battery-operated CO sensor is a high-impedance device. There will be signal conditioning/processing hardware, but the fundamental sensor is susceptible to...

Referring to your original question: Get a smarter colleague (you're right).

Elevations / Sea level are required to evaluate this problem.

The 'Gordian' solution is a shut-off valve. If you need 'passive,' a low-cracking check valve might work - the trick is having a high enough spring force to positively seal while having it low enough that the pump can overcome it. You don't say (or I missed) what your 0.5mm OD tubing wall...

If it's Al2O3, there should be serious pitting / material loss on the your aluminum substrate.

I'm guessing that you're diluting the peroxide with water. I'm also guessing that water is 'hard.'