The Germany-based Hydrotechnik (Haidetainike) 3403-21-I5.39S pressure sensor is an outstanding industrial measurement product:
Measurement Principle: It employs the piezoresistive principle, where a polycrystalline silicon thin film is deposited on a stainless steel diaphragm. Pressure changes induce alterations in electrical signals, enabling pressure measurement.
Product Type: It is a relative pressure sensor designed to measure pressure values relative to ambient pressure.
Output Signals: The sensor can output a variety of signals, such as 4-20mA current signals and 0-10VDC voltage signals, facilitating connection and data transmission with different control systems.
Mechanical Connection: The mechanical connection thread adheres to the ISO 228 - G¼A standard. The sealing material is an FKM (fluororubber) sealing ring compliant with DIN 3869, ensuring the sealing and stability of the connection. Additionally, it comes with an integrated throttle insert that optimizes measurement performance within specific measurement ranges.
Electrical Connection: The electrical measurement connector is a 4-pole device connector with a protection rating of IP67 (when the connector is tightened), enabling it to withstand harsh industrial environments.
Application Areas: Thanks to its high precision, excellent vibration resistance, and stability, it is widely used in industrial sectors such as construction machinery, metallurgy, machine tools, and automotive manufacturing. It is employed in scenarios such as hydraulic system pressure monitoring and equipment operational status monitoring.









