Over Temperature Alarm Sensor Level?

[76SeaRay]

I am installing the Monitor Full Closed Cooling system on my 1996 GM 5.7L Vortec engine. The Monitor system comes with a 160 degree thermostat and the manual says that it will maintain the engine between 160 and 170 degrees. I need to get an over temperature alarm sensor. I have read in a few places that the over temperature alarm is normally set to alarm at 195 or 196 degrees. Can someone verify this temp level for the alarm? Also, does anybody have a part number (NAPA maybe) for a over temp sensor?

Thanks...

 

[76SeaRay]

Well, picked up what I thought (and the guy at NAPA said) is a temperature switch for a 1996 GM 5.7L. Got home and checked it with my multimeter and it isn't a switch. It's just another temperature sensor. After hours on the internet looking for a temp switch, I realized that what I need to look for is a coolant fan switch for a car or truck. Looks like I can get one that turns on (alarms) at 200 degrees and turns off (no alarm) at 185 degrees.

 

[Scott Danforth]

I posted links in the electrical forum stickies for sensor catalogs.

However I suggest you install a water pressure gauge on the raw water side.

With an HX, you will have burned a all the rubber bits in the exhaust for about 5 minutes before your switch goes off and alarm sounds. However with a water pressure gauge, you can catch it becore there is damage

 

[Scott Danforth]

See post 12 https://forums.iboats.com/threads/generic-boat-wiring-information-updated-verified.726970/

 

[76SeaRay]

Thanks for the info Scott. I found the catalogs in the stickies. Hadn't thought about a water pressure sensor. Not sure where I would put it but maybe on the inlet line to the heat exchanger just before it feeds raw water to the exchanger as that would also cover any leaks between the sea water pump and the inlet to the exchanger.

 

[Scott Danforth]

Thanks for the info Scott. I found the catalogs in the stickies. Hadn't thought about a water pressure sensor. Not sure where I would put it but maybe on the inlet line to the heat exchanger just before it feeds raw water to the exchanger as that would also cover any leaks between the sea water pump and the inlet to the exchanger.

I would just order a water pressure gauge. No sensor.

A good old fashioned $30 bourdon tube outboard water pressure gauge

The water preasure sensors do not last in salt water, where the bourdon tube gauge will

 

[76SeaRay]

Thanks, will check it out...