The wetted parts of a pressure sensor are the surfaces that the process media actually touches — diaphragm, port, fill fluid (if any), and any seals or gaskets exposed to the line. Pick the wrong wetted material and the sensor Read More
A chilled water flow meter measures the flow rate of cooling fluid in an HVAC plant, district cooling loop, or industrial process chiller. The right meter type depends on pipe size, accuracy class, glycol content, and whether the reading feeds Read More
An underground tank level indicator measures the liquid depth inside a buried tank — fuel, potable water, septic, or chemical — and shows it on a gauge, panel, or remote dashboard. The right indicator depends on the fluid, tank depth, Read More
A differential pressure transmitter (DPT) measures the pressure drop across two points — across an orifice for flow, across a liquid column for level, or between two process taps for filter monitoring. Installation decides whether the published 0.075% accuracy survives Read More
A pressure transmitter converts process pressure into a 4-20 mA, HART, or digital signal that a control system can read. Inside the housing, a sensing element deflects under pressure; the deflection is measured as a change in resistance, capacitance, or frequency; Read More
SCADA stands for Supervisory Control And Data Acquisition. It is the software-and-hardware stack that lets one operator watch — and steer — dozens or hundreds of field instruments from a single screen. SCADA does not run the loop itself; PLCs Read More
Flow rate and pressure are linked by Bernoulli’s equation, by friction losses, and by the geometry of whatever the fluid passes through. A pump that delivers 200 kPa across a 50 mm pipe will not push the same volume per minute Read More
Updated Apr 25, 2026 — Reviewed by Sino-Inst Engineering Team A BTU meter for chilled water quantifies cooling energy by combining a flow meter with a matched pair of RTDs on the supply and return. On a typical HVAC loop Read More
A stilling well is a metal pipe installed inside a tank with calibrated holes near the bottom. It surrounds the radar antenna (or any non-contact level transmitter) and dampens the surface chaos — foam, turbulence, swirls from agitators — that Read More
Most flow meter accuracy problems trace back to one root cause: not enough straight pipe before and after the meter. Get the upstream and downstream lengths right and a $3,000 magmeter holds its ±0.5% spec. Get them wrong and even Read More
