QDY30A-B-FD Anti-Clogging Submersible Level Transmitter for Wastewater
An anti-clogging, IP68 submersible level transmitter for reliable wastewater measurement with flexible installation and direct 4–20mA PLC/DCS integration.
QDY30A-B-FD is a level transmitter designed around “Anti-clog Probe for Water with Common Impurities.” The dedicated mechanical and connector structure simplifies installation, replacement and field maintenance. The dedicated mechanical, connector or mounting structure helps the instrument fit the intended pipe, tank, cabinet or equipment interface. The feature is directly relevant to wastewater treatment, water well and water basin projects. Shorten installation time and simplify later field maintenance, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.
Suspended or Fixed Installation Options
QDY30A-B-FD is a level transmitter designed around “Suspended or Fixed Installation Options.” The dedicated mechanical and connector structure simplifies installation, replacement and field maintenance. The dedicated mechanical, connector or mounting structure helps the instrument fit the intended pipe, tank, cabinet or equipment interface. The feature is directly relevant to wastewater treatment, water well and water basin projects. Shorten installation time and simplify later field maintenance, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.
Direct Connection to Displays or Control Systems
QDY30A-B-FD is a level transmitter designed around “Direct Connection to Displays or Control Systems.” Displays the measured value directly at the process point for easier inspection and commissioning. The local display makes the live value and operating state easier to verify during commissioning, inspection and routine maintenance. The feature is directly relevant to wastewater treatment, water well and water basin projects. Check operating status directly without opening the control system, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.
Working Principle Diagram
Technical Specifications
Zero Temperature Drift：±0.05% F.S./℃ (within compensated temperature range)
Sensitivity Temperature Drift：±0.05% F.S./℃ (within compensated temperature range)
Long-term Stability：≤0.25% F.S./year; minimal drift from scaling and sediment adhesion
Step Response Time：≤800ms (10% → 90% full scale, steady-state condition)
Anti-turbulence Damping：Software-adjustable multi-level filtering; eliminates reading fluctuation from liquid agitation and pump surges
Safe Continuous Overpressure：200% F.S.; no permanent diaphragm deformation or zero shift
Burst Pressure Rating：≥300% F.S.; withstands sudden water hammer and level surges
Zero Recovery Performance：≤0.15% F.S. offset after overpressure release; no permanent drift from particle impact
Built-in Surge Suppression：Integrated TVS diode; absorbs transient voltage spikes from grid switching and lightning induction
