rygh
Guest
It can help to have a very precise true water level reading in your sump.
*** Real level, as opposed to a simple on/off float switch that triggers at a certain point ***
Any opinions on the best way?
So far I have considered:
### E-Tape type sensor:
A long strip you put in the water. The pressure of the water pushes against a resistive membrane.
I tried this a while back. Lousy.
### Air pressure in a tube:
Reef Angel has one. Certainly simple.
But a few issues:
Any slight air leak will quickly throw it way off.
Even without an air leak, air will diffuse out into the water. Some use a small air bubbler to keep tube full.
Accuracy issues.
### Acoustic sensor
Like sonar, it sends a click, which bounces off the surface, and delay is measured.
Cost issues.
Accuracy issues for affordable versions.
Moisture issues. Although waterproof ones seem to exist.
Anyone try this?
### DIY Linear resistor on a float
As the float moves up and down, the linear resistor moves.
Needs thought.
*** Real level, as opposed to a simple on/off float switch that triggers at a certain point ***
Any opinions on the best way?
So far I have considered:
### E-Tape type sensor:
A long strip you put in the water. The pressure of the water pushes against a resistive membrane.
I tried this a while back. Lousy.
### Air pressure in a tube:
Reef Angel has one. Certainly simple.
But a few issues:
Any slight air leak will quickly throw it way off.
Even without an air leak, air will diffuse out into the water. Some use a small air bubbler to keep tube full.
Accuracy issues.
### Acoustic sensor
Like sonar, it sends a click, which bounces off the surface, and delay is measured.
Cost issues.
Accuracy issues for affordable versions.
Moisture issues. Although waterproof ones seem to exist.
Anyone try this?
### DIY Linear resistor on a float
As the float moves up and down, the linear resistor moves.
Needs thought.
