The 3281B NMEA2000 Black Water Tank Level Sender
will provide a
±2% accurate black water or sewage tank level to the NMEA2000 marine network and
reports it's level in 1% increments.
It is robustly constructed in stainless steel
with no moving parts to stick or fail in service. It is easily
cut to length to suit tank depths from 200mm to 2 metres and is
self calibrating at power on.
The Tank Level Sender can store an alphanumeric Tank
Name and Tank Shape Calibration data so that displays on the
network can show the tank name and it's remaining capacity in
Litres, US Gallons or in Gallons.
It is easily fitted in the black water tank into
a 1.25" BSP threaded hole. It can also be attached to the
industry standard SAE 5 bolt fitting by using the
5 Bolt to 1.25" BSP Mounting Ring supplied.

Up to 16 Black Water Tank Level
Senders can be connected to a single network and the sender
number is simply selectable at installation by means of the
small rotary switch.
It is certified to the NMEA2000 network standard and
attaches to the network using a single "Micro" plug. It draws
less than 50mA from the network.
It comes
complete with a full installation and operation manual, tank
gasket and combined power and signal cable. It takes power
from the NMEA2000 network and requires no additional wiring.