"Wet" probe for the fans???
#1
02-28-2004 | 01:50 AM
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From: SW MO.
#2
02-28-2004 | 04:19 PM
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Joined: Mar 1998
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From: Virginia
Hi S&B,
That's really not a topic for the Computer Chips section, so you'll want to give us a call to go over those details - I'll get you some brief info for now, & then if you want to know more about this, give us a shout when you can, OK? Thanks!
Well, both are correct - in our dual 16" and dual 14" fan kits, we do use controllers with "dry" probes - but we also offer 'wet" probe controllers in single-fan applications.
The deal is, in our complete electric fan kits, we insist on having *separate* controllers for *each* fan, so that we insure complete dual redundancy - if a controller or a fan fails, the vehicle is not disabled, you can still drive it on the other controller & fan in most situations (aside from heavy towing thru Death Valley or something similar).
Now what we have not really had time to do is to adapt the heavy-duty wet probe controllers which each have their own web probe, to a dual controller sharing a single wet probe configuration as I'd really like to do, as there is only 1 convenient pre-existing NPT screw-in location in the engine block for such a probe, and we don't want to have to tell people to drill a hole in the manifold or thermostat housing, etc., for a second probe. Not only is that additional work that some people will not be willing to do, but it also means each controller would be sensing coolant temperature from separate locations - thus the readings would be different, as there is as much as 25 degrees difference in coolant temperature depending on exactly where you measure it - the hottest location being right at the thermostat, up above the water pump, and the coolest location generally being down low on the engine block, further way from the water pump.
In time, we'll eventually offer an option with a single wet probe screwed into the engine block, but it will take some time. It's not hard, just very time-consuming, as we have to insure no change in resistance values when we do the splice to have both controllers operate from just 1 wet temperature probe. We may get lucky and find we don't need to add any resistor, etc., but we just haven't had time to do that R&D yet.
Right now, in our electric fan kits each controller has it's own dry probe, and we use dry probes for convenience - so you don't have to even drain the engine coolant or remove the radiator to install our kit - and of course, for complete true dual redundancy. But I do want to do a dual wet controller with a single wet probe type of configuration - and we'll get to it eventually.
That's really not a topic for the Computer Chips section, so you'll want to give us a call to go over those details - I'll get you some brief info for now, & then if you want to know more about this, give us a shout when you can, OK? Thanks!
Well, both are correct - in our dual 16" and dual 14" fan kits, we do use controllers with "dry" probes - but we also offer 'wet" probe controllers in single-fan applications.
The deal is, in our complete electric fan kits, we insist on having *separate* controllers for *each* fan, so that we insure complete dual redundancy - if a controller or a fan fails, the vehicle is not disabled, you can still drive it on the other controller & fan in most situations (aside from heavy towing thru Death Valley or something similar).
Now what we have not really had time to do is to adapt the heavy-duty wet probe controllers which each have their own web probe, to a dual controller sharing a single wet probe configuration as I'd really like to do, as there is only 1 convenient pre-existing NPT screw-in location in the engine block for such a probe, and we don't want to have to tell people to drill a hole in the manifold or thermostat housing, etc., for a second probe. Not only is that additional work that some people will not be willing to do, but it also means each controller would be sensing coolant temperature from separate locations - thus the readings would be different, as there is as much as 25 degrees difference in coolant temperature depending on exactly where you measure it - the hottest location being right at the thermostat, up above the water pump, and the coolest location generally being down low on the engine block, further way from the water pump.
In time, we'll eventually offer an option with a single wet probe screwed into the engine block, but it will take some time. It's not hard, just very time-consuming, as we have to insure no change in resistance values when we do the splice to have both controllers operate from just 1 wet temperature probe. We may get lucky and find we don't need to add any resistor, etc., but we just haven't had time to do that R&D yet.
Right now, in our electric fan kits each controller has it's own dry probe, and we use dry probes for convenience - so you don't have to even drain the engine coolant or remove the radiator to install our kit - and of course, for complete true dual redundancy. But I do want to do a dual wet controller with a single wet probe type of configuration - and we'll get to it eventually.
Last edited by Superchips_Distributor; 03-08-2004 at 08:46 PM.