Ultrasonic Sensors | Liquid level in tanks/reservoirs | Frequency: 1 MHz (industry standard) Resolution: 1 mm▲ (industry avg: 2 mm) Output: Analog/Digital▲ (supports both interfaces) | Non-contact measurement, works with various liquids, flexible analog/digital outputs | Struggles with turbulent liquids or obstructions, requires clear sound path |
Capacitive Sensors | Conductive liquids, interfaces | Dielectric Constant Range: 1-100 (covers most liquids) Non-Invasive Design: No moving parts (low maintenance) | No mechanical wear, works in corrosive environments | Affected by dielectric property changes, not suitable for non-conductive liquids |
Radar Sensors | High-temp/aggressive environments | Frequency: 24/60 GHz (common in industry) Penetration: Works through non-metallic walls (useful for sealed containers) | High temperature tolerance, no contact needed | Higher cost, requires line-of-sight, complex installation |
Float Sensors | Non-corrosive liquids, simple detection | Buoyancy-Driven: Relies on liquid density (simple and reliable) Mechanical Design: Basic construction (low cost) | Low cost, reliable in stable conditions | Mechanical wear over time, not precise for small changes, limited to non-corrosive liquids |
Pressure Sensors | Sealed tanks, submersible apps | Pressure Range: 0-100 psi (adjustable) Calibration: Requires regular adjustment (may add maintenance overhead) | Works in pressurized systems, submersible capability | Affected by temperature changes, needs frequent calibration, less accurate in dynamic conditions |
Optical Sensors | Clear liquids, precise interfaces | Accuracy: ±0.1 mm▲ (advanced versions exceed standard ±0.5 mm) Light Source: Laser/LED▲ (lasers offer higher precision) | High precision, fast response, works with solid interfaces | Blocked by particles, sensitive to contamination, requires clear line of sight |