Waterproof LVDT displacement sensors are designed for reliable position feedback in sewage treatment plants where moisture, sludge, and corrosive chemicals are present. Their sealed stainless steel housing and PUR cable protect the coil and core assembly, ensuring stable measurement in aeration tanks, sludge scraper systems, inlet screens, and valve or gate actuators. Typical technical parameters include: measuring range 0-10 mm to 0-100 mm; linearity +/-0.25% FS; resolution <=1 um; repeatability <=0.01 mm; output signal 0-5 V, 0-10 V, 4-20 mA, or RS485; supply voltage 24 V DC; protection class IP67 or IP68; housing material 304/316L stainless steel; cable PUR, shielded; operating temperature -20 C to +80 C; relative humidity 0-100% RH; pressure resistance up to 1-5 bar; vibration 10-2000 Hz; shock 50 g; insulation resistance >=100 MOhm; dielectric strength 500 V AC. For sewage treatment use, select an IP68-rated sensor with anti-corrosion housing, surge protection, and a stable output for PLC or SCADA integration. Correct mounting, cable sealing, and regular calibration help maintain accuracy in humid, dirty, and washdown environments. These sensors improve reliability in gate position monitoring, pump stroke control, screen level feedback, and sludge scraper positioning, reducing downtime and maintenance costs in wastewater facilities.