Electronic Water Level Gauge

Level measurement is one of the most common requirements in industrial process control. But the term "level gauge" covers many different technologies. Each technology has completely different principles, structures, and application conditions. Wrong selection leads to inaccurate data, frequent instrument failures, or even safety incidents. Anhui Tiankang's product line covers every major level measurement technology. This guide summarizes the core features of six mainstream level gauges. It helps customers quickly identify the best level measurement solution for their specific conditions.

The ultrasonic level gauge (TC) uses non-contact air-based distance measurement. The probe sends ultrasonic waves to the liquid surface. The instrument calculates liquid level based on the echo return time. The biggest advantage is easy installation. The sensor never contacts the media. There is no wear. This suits clean water tanks, wastewater tanks, channels, and atmospheric non-volatile storage tanks. Foam, strong steam, and thick fog absorb sound waves and cause measurement failure. The gauge is not suitable for volatile media or viscous liquids.

Electronic water level gauge options include the guided wave radar level gauge (TWR). This uses microwave pulses transmitted along a guided wave rod or cable. This is a contact radar technology. It is unaffected by foam, steam, dust, or internal obstructions. Accuracy is very high at ±1 to 3mm. It withstands high temperature (up to 300°C) and high pressure (PN40). It suits demanding conditions like crude oil tanks, chemical reactors, high-temperature pressure vessels, and powder silos. Coating on the guided wave rod may affect signals in highly sticky media.

The capacitive/radio frequency admittance level gauge (UYB) uses changes in capacitance between electrodes to measure level. The radio frequency admittance type resists coating effects. It handles high temperature and high pressure. The structure is simple. It measures liquids, viscous slurries, and powders. It suits acid and alkaline storage tanks, bitumen, coal powder silos, and high-pressure reactors. It does not work well with media that have very low dielectric constants (like anhydrous pure oil).

The float level gauge (UQK) uses a float that rises and falls with the liquid surface. This operates a magnetic reed switch or transmitter. The structure is simple. Cost is low. It can be used as a level switch for alarms or as a continuous transmitter. It suits small water tanks, wastewater tanks, and atmospheric corrosion-proof storage tanks. It does not suit high temperature, high pressure, or viscous media.

The magnetic level gauge (UHZ) uses magnetic coupling to flip indicators for local visual level reading. It can be equipped with 4-20mA remote transmission and high/low level alarms. It suits boilers, reactors, chemical storage tanks, and heating equipment. The on-site visual display is its biggest advantage.

The float type level gauge (UT) works on the Archimedes buoyancy principle. It converts signals through a torque tube. The pressure resistance is strong. It suits high-pressure petroleum, refining units, distillation towers, and applications with stable liquid density.

We provide complete services from selection consulting, custom manufacturing, to on-site commissioning. All level gauges can be equipped with 4-20mA, HART, RS485 outputs, and ExdⅡCT6 flameproof configurations. Export shipments include CE, ATEX/IECEx, and EAC certifications.