Page 3
SeeLeveL Sender Installation Manual 710-JS / 710-ES / 710-SS
DETERMINE MEASURABLE SPACE ON TANKS
gap
gap
gap
gap
gap
Measure the height of the tank from top to bottom then determine
measurable space.
•
The minimum gap is 1/4", however, we recommend that the
senders be installed 1/2" from the top and 1/2" from the bottom
of the tank. Depending on the characteristics of the tank the gap
can be a little more or less (see note below and installation tips
on page 12). This gap ensures that the sender can read properly
through the tank wall as the corners or rounded edges of the tanks
can be too thick for the sender to read through.
•
Subtract the gap space from the overall tank height. This will result
in your measurable space. Use the calculation formula at the right.
Measurable
Space
Tank Height
1/2” gap
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NOTE:
If senders do not fit full height of the tank, to
optimize the level you can justify sender location to be
either closer to the top or bottom, depending on the type
of liquid (Fresh or Grey/Black).
FRESH = closer to bottom as it is preferable that this tank is
not empty!
GREY/BLACK = closer to top as it is preferable that these
tanks are not full!
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NOTE:
This is not a static formula that can be used on every tank. With some fresh
tanks, the outlet for the pump feed may sit more than 1 inch above the bottom of the
tank. Your water pump may begin to suck air before the tank is completely empty. In
these cases, you want to install the fresh tank sender above the outlet for the pump
feed. This will ensure that the monitor reads “0” before the pump begins to suck air.
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NOTE:
Both senders in a double-stacked
configuration should be approximately the same length.
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CAUTION:
Installing a sender outside of the recommended measurable space
may affect your readings.
Find Measurable Space
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NOTE:
Although
the recommended
gap at the top and
bottom of the tank
is 1/2" the minimum
gap can be 1/4".
The maximum gap
for the 710-JS is 3/4",
the 710-ES is 1", and
the 710-SS is 1.25".
See recommended
sender options table
on page 2.
Stacked configuration
Two senders may be required for taller tanks and
additional senders may be purchased for this
application. There needs to be a gap of 1/16”
to 1/8” between the double stacked senders.
Calculate what the total length of measurable
space for both senders will be:
1. Measure the height of the tank.
2. Tank height = ______________
3. Calculate the recommended measurable space
4. Tank height
−
top gap
−
bottom gap
−
middle
gap
=
measurable space
.
*See note regarding
gap recommendations.
\\\
Single configuration
1. Measure the height of the tank.
2. Tank height = ______________
3. Calculate the recommended measurable
space as follows:
Tank height
−
top gap
−
bottom gap
=
measurable space
.
*See note regarding gap
recommendations.
1/2” gap
