Pls help - My black tank level is incorrect
My black tank level is incorrect . It always shows 3/4 full . I do not plan to fix it as I know it is a common problem. I just wanted to ask the experts here . How to you know (or guess) when it is ti...
Forum Discussion
I would say 90% of all RVers have your problem.. I just ignore the beast.. My tanks have other ways of saying "DUMP, SOON".
There are 3 or 4 different sensor sets.
Standard is a row of nails, or equivlant of nails, these penetrat the tank wall, Just a metal rod inside the tank, if the rod is WET, then clearly the level is at least that high. The "Gauge" senses which rods are wet and shows the level.. The problem is that slime on the walls keeps them wet all the time.
HORST miricle probes are "1b" for this discussion, Same type of sensor but they have done a few things to make them less suspectable to slime.. Supposed to be good, I hope to install later this year.
There are Pneumatic sensors.. These measure pressure at the sensor point, if the pressure on both sides of the sensor is the same, It's not that full, If the pressure is higher INSIDE the tank, it is that full... I have only seen these in the instruction manual for my macerator toilet. alas the sensors were NOT installed.
In theory you could weigh the tank. Several companies make load cells that could do this.
SEE LEVEL sensors use some sort of electrical sensing to measure the level inside the tank.. People who have this type of sensor.. Say it works well.. The only problem is if the sensor falls off the tank These are the Cadillacs of the sensors.
There are 3 or 4 different sensor sets.
Standard is a row of nails, or equivlant of nails, these penetrat the tank wall, Just a metal rod inside the tank, if the rod is WET, then clearly the level is at least that high. The "Gauge" senses which rods are wet and shows the level.. The problem is that slime on the walls keeps them wet all the time.
HORST miricle probes are "1b" for this discussion, Same type of sensor but they have done a few things to make them less suspectable to slime.. Supposed to be good, I hope to install later this year.
There are Pneumatic sensors.. These measure pressure at the sensor point, if the pressure on both sides of the sensor is the same, It's not that full, If the pressure is higher INSIDE the tank, it is that full... I have only seen these in the instruction manual for my macerator toilet. alas the sensors were NOT installed.
In theory you could weigh the tank. Several companies make load cells that could do this.
SEE LEVEL sensors use some sort of electrical sensing to measure the level inside the tank.. People who have this type of sensor.. Say it works well.. The only problem is if the sensor falls off the tank These are the Cadillacs of the sensors.
