Tek-Trol 4800C-50-42-25-P50 - The Tek-Sub 4800C Borehole Submersible Level Transmitter is only 19mm in diameter making it ideal for narrow conduit installations. The piezoresistive sensor is placed in a slim outer body that fits easily into boreholes, wells and slender pipes.  Rugged stainless steel body ensures that the transmitter serves seamlessly well, even in the most severe application conditions. The Tek-Sub 4800C also provides a diaphragm protection cap, customizable cable lengths and a vent tube for atmospheric pressure compensation. No maintenance, high accuracy, and long-term stability make it a perfect choice for narrow conduit applications.