noelex
Well-Known Member
Sight tubes are a great option, but they can only be used where there is access to the side of the tank with a protected space to mount a reasonably delicate tube. It is also worth considering the humble dip stick.
Sight tubes work well for diesel tanks, but tend to develop algal growth when used on water tanks and they cannot be used, unless you are very brave
, for grey and black water tanks, although some use translucent tanks which serves the same purpose.
An alternative to a sight tube, but working on the same principal are the sight glasses. The advantage is the fuel level can be seen continuously without opening any valves and they are still visible from a reasonable distance away. The drawback is that the fuel level is only shown roughly (depending on the number of sight glasses).
We have had three sight glasses installed on our diesel day tank. These only show a crude indication of the fuel level, unlike the tank tender that has a very fine scale, but their purpose is only to act as back up in the unlikely event the Tank Tender fails.
This is a sight glass:
This is from another Bestevaer, but their diesel day tank is very similar to ours. You can see the three sight glasses on the left hand side:
Sight tubes work well for diesel tanks, but tend to develop algal growth when used on water tanks and they cannot be used, unless you are very brave
An alternative to a sight tube, but working on the same principal are the sight glasses. The advantage is the fuel level can be seen continuously without opening any valves and they are still visible from a reasonable distance away. The drawback is that the fuel level is only shown roughly (depending on the number of sight glasses).
We have had three sight glasses installed on our diesel day tank. These only show a crude indication of the fuel level, unlike the tank tender that has a very fine scale, but their purpose is only to act as back up in the unlikely event the Tank Tender fails.
This is a sight glass:
This is from another Bestevaer, but their diesel day tank is very similar to ours. You can see the three sight glasses on the left hand side:
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