Continuous Chemical Level Without Wetted Contact Chemical Tank Ultrasonic Level Transmitter is designed for atmospheric acid, alkali and water-treatment chemical tanks where ultrasonic echoes remain viable. Corrosive liquid can attack wetted probes, but dense vapor, foam, fuming and temperature gradients may also weaken an ultrasonic return. A non-contact transmitter reduces direct chemical exposure and can provide inventory, refill and high-level signals from above the tank. Check Vapor, Foam and Material Compatibility The transmitter sends an ultrasonic pulse toward the surface and converts the return time into distance and level. Non-contact measurement keeps the sensor away from wastewater, chemicals and moving equipment, while local display and signal outputs support continuous control. Gallop lists compact and split structures, 0.4 to 20 m measuring ranges, ±0.5 percent full-scale accuracy, 4-20 mA, RS485 and HART options, and IP68 sensor protection for the core GLP-7 series. Optional relay output can support pump start and stop logic. Housing, transducer face, process connection and any isolation accessory still need compatibility with the vapor space and cleaning chemicals. This page can naturally support buyer terms such as non-contact level transmitter, ultrasonic tank level sensor, 4-20 mA level measurement, pump control and remote level monitoring. Turn Level Into Safe Inventory Control Provide chemical and concentration, vapor, temperature, pressure, foam, tank dimensions, nozzle and agitator details; maintain a clear path and adequate dead zone. Configure 4-20 mA or digital output, alarms and tank strapping for the control system, and select radar instead when vapor or foam makes ultrasound unreliable. Dense foam, heavy vapor, vacuum, strong turbulence, internal obstructions and material buildup can weaken or misdirect the echo. A clear sound path and sufficient blanking distance are required. Gallop has focused on flow and level instrumentation since 2005 and presents in-house R&D, ISO 9001:2015 and CE evidence. Ask for the exact datasheet, certificate and calibration record that apply to the quoted model.