GZP6181A: Absolute Pressure

Sensor Attribute	Attribute Value
Product Category	Pressure Transducer
Product Series	GZP6181
Pressure Type	Absolute Pressure
Pressure Range	0～5MPa(Customized range)
Power Supply Type	5±0.25Vdc
Output Value	0.5～4.5V or Customized by request
Accuracy	±1%FSS@0～60°C
Operating Temperature	-40 to 125°C
Housing Material	Stainless steel
Electrical Port	Parkard (#0441004)
Pressure Port	G1/4 or 7/16-20UNF
Protection level	IP67
Cycle Life	＞ 1 Million
Application	Hydrogen energy/coolant system/air condition system

Product Description

The GZP6181 is a pressure sensor product developed by Sencoch for the automotive market and industrial control applications.

The product packaging adopt metal diaphragm isolation technology. The measured pressure work on the stainless steel diaphragm and then transfer to MEMS chip by internal sealed silicone oil, where the signal is processed by an automotive-grade signal conditioning chip(ASIC).

The ASIC performs calibration and compensation for raw signal and convert pressure signals into standard analog output signals (range and output is customizable).

The GZP6181 pressure transducer has the advantages of fast response, high reliability and good stability, and is a high cost-effective sensor product.

Function Description

This product is developed using advanced microelectromechanical systems (MEMS) technology, with its key technology based on high-temperature resistant MEMS pressure sensor chips and high-performance analog integrated circuit (ASIC) chips for signal conditioning. It adapt mature and reliable oil-filled isolation technology for packaging. The MEMS pressure sensor chip generates a voltage signal proportional to the measured pressure through a Wheatstone bridge composed of four strain-sensitive resistors. This signal is amplified, temperature-compensated, and linearized by the ASIC chip to produce an output voltage that follows a predefined relationship with applied pressure. The linearization of the transfer function and temperature compensation are implemented by the ASIC’s digital processing circuitry. Through polynomial compensation algorithms and multi-point pressure calibration techniques across various temperatures, the system achieves high-precision pressure measurement throughout its full operating temperature range. The transfer function of the pressure sensor is defined by the following parameters:

minimum and maximum rated pressure
voltage values at minimum and maximum rated pressures
clamp voltage

All parameters required by the complete calibration algorithm (including offset, gain, temperature coefficients of offset and gain, and linearization parameters) are determined and stored in the E²PROM inside the ASIC after calibration.

Applications

Hydrogen energy:
The laser welding process of this pressure sensor ensures hydrogen ion permeability, making it applicable to the production, storage, and transportation of hydrogen energy, enabling real-time monitoring of hydrogen pressure to ensure stable and safe operation

Air conditioning system:
The system monitors and measures the pressure in the air conditioning ducts, feeding the signal back to the ECU. Based on this voltage reading, the ECU promptly adjusts the cooling fan's speed to prevent compressor damage.

Coolant system:
This sensor is designed for temperature control systems in data centers, energy storage, and battery management. It measures coolant pressure in water-cooled systems to evaluate their heat dissipation performance.