Nano-core micro-new differential pressure sensor NSPDSx series can be applied to fresh air system and fire residual pressure monitoring

Feb 2023

Recently, NOVOSENSE launched a new NSPDSx product series of differential pressure sensors, including NSPDS5, NSPDS7 and other sub-series products, which can be used in the fields of fresh air system/HVAC differential pressure monitoring, fire residual pressure monitoring, gas flow monitoring, pressure transmitter and industrial pneumatic control. The differential pressure sensor is widely used in daily life, such as commercial and domestic fresh air systems, HVAC, nucleic acid cabin and negative pressure observation room, etc. Its principle is to use the differential pressure sensor to measure the air pressure difference inside and outside the space to control the opening or closing of the vent, so as to ensure that the room is in a micro-negative pressure state, and the outside fresh air will automatically flow into the room after treatment, while the polluted air in the room will flow out of the room, Improve the quality of indoor environment to meet people's pursuit of healthy life. In addition, the fire residual pressure system also uses the micro-differential pressure sensor to control the positive pressure air supply system to ensure the safety of the fire evacuation passage and avoid toxic gas flowing into the escape passage in case of fire.

CMOS mixed-signal conditioning chip (including adjustable PGA and 24-bit Σ-Δ ADC) amplifies, calibrates and compensates the output of the MEMS core, and can convert the signals of different pressure ranges from - 10kPa to+10kPa and - 350kPa to+350kPa into analog signals and digital I2C signals with user-defined output range (0~5V). At the same time, the built-in MEMS differential pressure core is designed based on the high sensitivity single crystal silicon piezoresistance effect and the advanced silicon silicon bonding CSOI MEMS micromachining process. The accuracy and stability of the MEMS core in its life cycle is better than 1% F.S.

The main features of the product are as follows:

High accuracy and low power consumption: high linearity, good stability, no need for calibration, 100% temperature compensation, ex-factory accuracy better than ± 1% F.S., accuracy better than ± 2% F.S. in the life cycle.
Multiple output modes: support analog absolute output and digital I2C output, suitable for various application requirements, simple and convenient, and good portability.
Customized products: support the customization of multiple ranges such as - 10kPa~+10kPa and - 350kPa~+350kPa, which are applicable to a variety of pressure application scenarios with high flexibility.
Wide temperature range: - 20 ℃~70 ℃ working temperature, suitable for all kinds of harsh working environment; At the same time, the temperature compensation range of 0 ℃~70 ℃ can reduce the impact of temperature change on product performance and ensure product stability.
Packaging form of double air nozzles: adopt the packaging form of double air nozzles SOIC-16 in line with the industry JEDEC standard, which can be pin-to-pin compatible with SMI micro-differential pressure series products; With high reliability and stress relief characteristics, it is convenient for customers to weld and use while ensuring excellent performance and reliability of products.

Nano-core micro not only has the independently developed MEMS design and packaging technology, as well as the automatic batch calibration technology of multiple pressure and temperature points; It can provide customers with more flexible delivery and reduce supply chain risks; It can also provide customized sealing products according to customer needs to meet the application requirements of different scenarios.