GSI-3250 Analog Transmitter


• Mounts from Top of Tank
• High Resolution 4-20 mA DC Output
• Simple Mounting and installation
• Very Compact Design
• Calibrates Without Opening Enclosure ISO9001 Certified
• Stainless Steel Enclosure
• Custom Floats Available
• Measurement of Total or Interface Level


The AT500 is based upon the Magnetostrictive principle. The sensing tube contains a wire which is pulsed at fixed time intervals. The interaction of the current pulse with the magnetic field created by the magnetic float causes a torsional stress wave to be induced in the wire. This torsion propagates along the wire at a known velocity, from the position of the magnetic float and toward both ends of the wire. A patented piezo- magnetic sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse. The microprocessor-based electronics measures the elapsed time between the start and return pulses and converts it into a 4-20 mA output which is proportional to the level being measured.