A piston flow meter measures liquid by counting how many fixed-volume slugs pass through the meter body. Each rotation of the piston pushes one chamber of liquid past a sealed reference, and a magnet on the piston shaft drives a 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 solid flow meter measures the mass flow of dry bulk material — cement, soybean meal, fly ash, plastic pellets, sugar, mined coal — moving through a pipe, chute, or on a belt. Unlike liquid flow, there is no single 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 on April 25, 2026 — “Can I install this flow meter vertically?” is the wrong question. The right one is: which meter, and in which direction? A turbine installed downflow destroys its bearings in months. A rotameter installed horizontally Read More
Updated: April 24, 2026 — by Sino-Inst Engineering Team Molasses, honey, syrup, resin, and asphalt all share the same headache: they stop common flow meters from working. Orifice plates clog. Electromagnetic meters read zero when the fluid is non-conductive. Turbine Read More
