Coolant Presence Sensor. Any experience out there?

[Jeepnford]

Try this. Davies Craig DC-1 - Free Shipping on Orders Over $99 at Summit Racing

 

[MossRoad]

Our 2000 Chevy Impala had a coolant level sensor located near the top of the radiator.
The sensor is less than $10 at Autozone....

How you hook it up to a circuit? I do not know. But that could be figured out fairly easily, I'd think.

Here's a video of how to change it out if it goes bad....
Radiator Coolant Level Sensor Replacement - YouTube

 

[ddbackhoe]

I would like a coolant presence sensor for one of my generators. There is no reliable way to measure temperature in the absence of coolant. Most sensors will actually show a cooler reading after your coolant is gone! Then the real damage starts, and finally your probe may get heat through convection, or conduction, but the damage is probably done.

All the coolant presence sensors and systems I found are strangely in Australia.

The most interesting one was made by Montronics, is stand alone, has a 1/4" NPT mounting and internal transistor switch.

I tried to E-Mail SALES, and had my E-mail deleted, unread. Discouraging.
My phone plan doesn't cover Australia.

Any knowledge of such devices out there?

Murphy has a chamber with a float that has to be plumbed in, but that is too big and involved for this project.

Not sure exactly what you have in mind, but we can start here. Do you want a level sensor or just a switch? Guage or light bulb?
Level Switches & Transmitters
Liquid Level Sensors & Switches for Measuring Fluid Media - Gems™
Honeywell Sensing and Internet of Things

 

[Industrial Toys]

Thanks for the replies. I like the Monotronics one as it has a transistor that switches up to one amp. Run a relay and switch off the fuel solenoid.

Apparently many senders use capacitance which is interesting, rather then resistance. Kind of like a touch lamp, or elevator button. Basically a tuned circuit. Some probes, even have the sensor element protected inside a sleeve for better long term reliability.

That Davies Craig link didn't work for me. Something about updating drivers. I had seen the Davies Craig products and was of the impression that they are systems (with annunciation) and whole kits only.

 

[franklin2]

How about a flow sensor? They make many different types, this is one type.

Magnetic SUS 3�4 Stainless Steel Water Flow Switch Sensor thread 3/4 New | eBay

Flow switches are used in many places in a HVAC system. For instance if the circulator pump quits, there is usually a flow sensor that will shut down the boiler. You could put this in a short loop like you would if you were using a cab heater, but instead of a heater core, your loop would just go from the pump output to the pump suction. This would even stop the engine if the fan belt broke and quit turning the waterpump.

You may need to incorporate some sort of delay timer in the system to get it started and establish flow before putting it in the shut down circuit.

 

[Industrial Toys]

The flow would only stop when the pump had no more coolant. This might be a bit late. I am still curious why this is so popular in Australia. Not like NA doesn't have hot weather.

 

[ishiboo]

Boats use coolant flow sensors which are VERY useful. It can also be useful to measure cylinder head temperature.