Centroid Fuel Sender
- Thread starter Dan carter
- Start date
FYI
1. Talked to Speedhut today. They no longer carry Centroid due to COST. They had no problems to report with this unit. They did tell me their fuel gauge does dampening so its slow to react to sudden fuel level changes. For me they suggest I do another calibration for full and empty.
2. Also talked to Centroid about their RCR sending unit. Basic question was about slow reaction and how to check it out. They said:
" Averaging is not turned on in that sender, so slowness wont be due to the sender.
--But as a sanity check, you can check the Pos/Neg voltage when you turn on power to make sure it comes up right away_______
--And disconnect the Send wire and check to make sure that the voltage on the Send wire comes up just as quickly when you turn on the power_________. That's the voltage feeding through the gauge and will indicate you that gauge power comes on at the same time as sender power
--If both these powers come up right away, reconnect the Send wire and see if the connected Send voltage comes up right away at powerup__________. My guess is it will initially go to a couple tenths of a volt for 2 seconds, which is the "power-on peg". Then it will rise to the real reading's voltage, which if you test out of the tank (empty) will be a medium voltage like maybe a volt or three. You will not see a long period where the voltage is changing to make its way to the final correct voltage.
Sometimes it's the power-on peg that causes the problem. If the *display* does averaging, it may catch the pegged reading as its starting reading and then take a long time to average its way down to the real reading. We've sold a fair number of the "Superlite" parts and I don't remember that coming up before, though. And I don't know if our Speedhut gauge does averaging (we call it damping). But those blanks above will point us in the right direction."
1. Talked to Speedhut today. They no longer carry Centroid due to COST. They had no problems to report with this unit. They did tell me their fuel gauge does dampening so its slow to react to sudden fuel level changes. For me they suggest I do another calibration for full and empty.
2. Also talked to Centroid about their RCR sending unit. Basic question was about slow reaction and how to check it out. They said:
" Averaging is not turned on in that sender, so slowness wont be due to the sender.
--But as a sanity check, you can check the Pos/Neg voltage when you turn on power to make sure it comes up right away_______
--And disconnect the Send wire and check to make sure that the voltage on the Send wire comes up just as quickly when you turn on the power_________. That's the voltage feeding through the gauge and will indicate you that gauge power comes on at the same time as sender power
--If both these powers come up right away, reconnect the Send wire and see if the connected Send voltage comes up right away at powerup__________. My guess is it will initially go to a couple tenths of a volt for 2 seconds, which is the "power-on peg". Then it will rise to the real reading's voltage, which if you test out of the tank (empty) will be a medium voltage like maybe a volt or three. You will not see a long period where the voltage is changing to make its way to the final correct voltage.
Sometimes it's the power-on peg that causes the problem. If the *display* does averaging, it may catch the pegged reading as its starting reading and then take a long time to average its way down to the real reading. We've sold a fair number of the "Superlite" parts and I don't remember that coming up before, though. And I don't know if our Speedhut gauge does averaging (we call it damping). But those blanks above will point us in the right direction."
Ok guys I am finishing all my electrical connections , based on all the information available should I replace the RCR fuel sending unit? looks like there have been a few problems with it, and in some cases more than once, once I install the clam and the spider accessing the fuel tank will be a major endeavor. If you were in my position would you replace it with the classic instruments one (same principle as the RCR) or the KUS magnetic floating sensor type (half the cost) . I assume the classic instruments one would be more reliable in the long run since it does not involve moving parts . Thanks for your input .
