We primarily install the top of the line controllers (SC2000, SC1000, SC100) with pressure transducers for level measurement (always with a duplexer float control backup for your peace of mind). In the past, we've used other sources for pressure transducers. We were excited to find out that MPE has introduced their own transducer this year! Now, you can have a top to bottom MPE level control system. Check it out below!
When submersed in liquid, the Level Monitor converts the pressure exerted by the liquid into a 4-20mA analog signal that represents liquid level. The vent tube in the cable transmits atmospheric pressure down the cable to the reference side of pressure sensor, to correct for changes in atmospheric conditions.
A stainless steel diaphragm and silicone oil fill is provided to isolate and protect the pressure sensor from the liquid being measured.
The weight of the Level Monitor acts to reduce its movement when placed in a moving liquid. A Strength Cord in the cable provides ample support for its weight. In applications where strong currents are present, the 1/2" NPT fitting on top may be used to mount the Level Monitor in a fixed position.
A two stage surge suppressor circuit using both an MOV and TVS provide high voltage transient protection for the transducer circuitry.
The Transducer Vent Bellows (Part #: TVB1) must be purchased with the Level Monitor and be connected to the end of the vent tube. The TVB1 is required to prevent moisture from entering the vent tube.
The Level Monitor may be ordered with various lengths of cable, and with one of three pressures ranges 5, 10, or 15 psi ( 11.5, 23.1, or 34.6 Feet ).