Choosing an ultrasonic level sensor for diesel tanks is a tank-geometry problem before it is a sensor-spec problem. The same 4–20 mA transmitter that reads cleanly on a 3 m vertical cylindrical AST can drift, foam-out, or echo the wrong Read More
Molten salt level measurement is one of the few level applications where the wetted-part metallurgy matters more than the sensor principle. At 565 °C in a concentrated solar power (CSP) cold tank — that is the cold side — solar Read More
Choosing a radar antenna is choosing a beam. Beam angle, near-field length, focusing gain, build-up tolerance, and chemical compatibility all flow from the antenna geometry — not from the radar electronics. This guide compares the five antenna types used on Read More
Cooling tower water-level control is four separate jobs in one basin: refill the evaporated water, dump the concentrated water (blowdown), guard the pump from running dry, and stop the basin from overflowing. One sensor cannot do all four reliably — Read More
Guided wave radar (GWR) calibration is a four-step procedure: tank-empty zero, full-distance reference, dielectric (DK) entry, and threshold tuning. Done in that order, a probe-tip locked GWR transmitter delivers ±3 mm accuracy on liquids down to εr = 1.4 and ±0.5% of span Read More
A cryogenic level sensor measures the liquid level of nitrogen, oxygen, argon, hydrogen, or LNG inside vacuum-jacketed (VJ) tanks at temperatures between −162 °C and −253 °C. Because every cryogen has its own dielectric constant, vapor pressure, and stratification behavior, the right Read More
A capacitive fuel level sensor measures diesel, petrol, kerosene, or jet fuel by treating the tank as a parallel-plate capacitor and reading the change in capacitance as fuel rises and falls. It is non-mechanical, has no moving parts inside the Read More
A transformer oil level indicator monitors mineral or ester insulating oil inside a power transformer’s main tank, conservator, or on-load tap changer (OLTC). It is the single most important piece of low-voltage instrumentation on the asset — a 10 % drop Read More
Updated April 24, 2026 by the Sino-Inst Engineering Team A magnetic level gauge is a mechanical indicator that reads liquid level from the outside of a vessel using a magnetic float sealed in a bypass chamber. No power, no sight Read More
Updated: April 23, 2026 Septic tanks, sewage holding tanks, and lift station wet wells are the dirtiest service for any level sensor. Solids settle on the bottom. Grease and FOG (fats, oils, grease) form a scum layer on top. Hydrogen Read More
