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Old 03-17-2016, 02:39 PM   #1
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2009 25' FB International
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recalibration tank sensors

We have been attempting to recalibrate the black/grey/fresh water tank sensors using Rich Luhr's instructions in his book. Has anyone else had experience with this? We cannot get it to work.
We started with the black water tank. Our problem starts at the point when the black tank is filled. The lights on the display do not respond as they should according to Rich's instructions.
We have tried three times to go through this process and have not been successful. Any help would be appreciated. Thanks.
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Old 03-17-2016, 02:55 PM   #2
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I'm not sure what Luhr's book shows. I use the Micropule confusing manual to get started.

Hopefully you don't have a bad sensor or panel.

When I recalibrate my Micropulse I make sure my batteries are fully charged then take it off shore power. Tanks are empty.

I disconnect the tanks I don't want to calibrate. My tank sensor lines have come up near the water pump and connect into an RJ11 extender fitting. I disconnect there.

Then I put the Micropulse in calibration mode. Only the one tank I want to calibrate will show green on the panel.

Set the panel to the Empty calibration.

I use a cheapo inline water meter to measure how many gallons to put in for the empty reading. Usually about 4 gallons is good enough.

Set the panel now to Full calibration

Fill the tank to a few of gallons less than the capacity.

Finish the calibration.

Connect the next tank to be calibrated, disconnect the tank you just calibrated then repeat the whole calibration procedure for the 2nd tank.

Same for the 3rd tank.
Kelvin
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Old 03-17-2016, 03:46 PM   #3
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Yeah, we have lots of experience in recalibrating Micropulse sensors on our Airstream. After nearly two years of fighting the darn thing the only way we could permanently calibrate them was to get rid of the crappy Micropulse system, replacing it with See Level II.

Our trailer was still under warranty and our dealer was awesome - they totally went to the mat with Airstream to convince them the replacement should be made under warranty, which it was. Airstream did not want to do it, but it seems that buying from one of the biggest dealers in the country can have its perks when it comes to persuading the Mothership. We're happy campers now.
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Old 03-17-2016, 04:04 PM   #4
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Good luck with your micropulse. follow the procedure but don't expect satisfactory results. I replaced mine with SeeLevel. Accurate to 5%.
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Old 03-17-2016, 09:23 PM   #5
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Don't mean to be such a wet blanket. There are probably plenty of folks out there somewhere with Micropulse sensors that work well enough to continue using them. That said, we weren't one of them. <sigh>
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