Learn how a differential pressure transmitter works — from ΔP sensing and three sensor technologies (capacitive, diffused silicon, resonant silicon) to static pressure effects and 3-valve manifold startup.
HART isn’t a replacement for 4-20mA — it’s a digital layer on top of it. See when the HART 7 upgrade pays back, and when pure 4-20mA is still enough.
You’ve got a new 4-20mA pressure transmitter in hand and you need to wire it correctly the first time — without frying the board, starving the loop of voltage, or spending three hours debugging why the PLC reads zero. Once the loop is wired, the next step is confirming it reads true — see the…
Absolute pressure vs gauge pressure explained by a 35-year refinery engineer — the 95/5 decision rule, the sealed-gauge trap, altitude drift for 5 US sites, and how to pick the right HMK transmitter.
Choose the right pressure sensor for high temperature service from +250°F to +2192°F. 4 methods compared with real specs and custom options from HMK-TECH.
Stop confusing pressure sensor, transducer, and transmitter. Use our 3-axis framework — distance, frequency, power — plus 3 real project cases from Europe, Singapore and the US to choose the right one in 30 seconds.