Random and frequent signal fluctuation of pressure transmitters is one of the most common and troublesome faults on hydraulic stations. The unstable readings disturb closed-loop control logic, trigger false safety alarms and cause abnormal movement of hydraulic actuators

Hydraulic stations feature cyclic pressure pulsation, instantaneous pressure spikes, continuous mechanical vibration and fluctuating oil temperature, which easily cause zero drift and premature failure of conventional pressure transmitters. Single-crystal silicon pressure transmitters have gradually become the preferred option for high-end hydraulic control systems. Many users only notice their high accuracy, while overlooking five critical material and structural advantages tailored for hydraulic working conditions.

Many system integrators make the mistake of using general-purpose pressure transmitters for hydraulic station applications, assuming that as long as the pressure range matches, the sensor will work reliably.

n hydraulic station field maintenance, a recurring phenomenon stands out: pressure transmitters installed close to pump outlets consistently suffer premature failure, while identical models mounted elsewhere on the same circuit remain functional for years. Many maintenance teams attribute this issue to poor product quality and repeatedly replace damaged sensors, yet failures keep reoccurring.

Pressure measurement accuracy of hydraulic systems is not only determined by transmitter precision, material quality or calibration. Improper mounting location is often an overlooked source of measurement error. In many hydraulic station projects, engineers install pressure transmitters based on convenience rather than fluid dynamic characteristics, resulting in reading deviations as high as 10%.

Many engineers directly set the pressure transmitter measuring range equal to the hydraulic pump’s rated pressure during hydraulic station design and procurement.

Hydraulic stations feature dynamic pressure pulsations, oil medium, vibration and frequent pressure spikes, making pressure transmitter selection far more complex than static process measurement.

Pressure transmitters adopt three mainstream process connection types: thread, flange, and sanitary clamp. In industrial procurement and engineering design, most installation failures are not caused by parameter or performance mismatch, but by incorrect interface selection.

Differential pressure (DP) transmitters are the most widely adopted instruments for liquid level measurement in sealed tanks, reaction vessels and industrial storage systems, relying on hydrostatic pressure principles to convert liquid height into standard electrical signals.