FOXBORO H90C9AA0117S Differential Pressure Transmitter

FOXBORO H90C9AA0117S Differential Pressure Transmitter

Product Overview

FOXBORO H90C9AA0117S is a high-performance intelligent differential pressure transmitter launched by Foxboro brand under Schneider Electric. Its core function is to accurately measure differential pressure signals of gases, liquids and other media in industrial processes, and convert them into standard electrical or digital signals, achieving efficient data exchange with distributed control systems (DCS) and programmable logic controllers (PLC). This transmitter adopts advanced capacitive sensing technology and digital signal processing scheme, with excellent measurement accuracy and long-term stability. It supports the HART communication protocol and can achieve remote parameter configuration and fault diagnosis. Its shell is made of high-strength anti-corrosion material, with a protection level of IP65, suitable for various harsh industrial environments, widely used in process control scenarios in industries such as petrochemicals, power, metallurgy, etc., providing core data support for accurate monitoring of parameters such as liquid level, flow rate, and pressure.

Specification parameters

-Core parameters: Model H90C9AA0117S, equipment type is intelligent differential pressure transmitter, measurement principle is capacitive; Configurable differential pressure measurement range, with a typical range covering 0-1kPa to 0-10MPa (please refer to the product manual for details);

-Accuracy performance: The measurement accuracy reaches ± 0.075% of full scale, the repeatability error is ≤± 0.01% of full scale, the response time is ≤ 100ms, and it has good linearity and temperature stability;

-Environmental parameters: working temperature range -40 ℃ -85 ℃, working humidity 5% -95% RH (non condensing); Suitable for harsh environments such as high dust and corrosive gases, with a protection level of IP65;

-Signal and power supply: The standard output signal is 4-20mA DC analog signal, supporting HART 7 communication protocol; The power supply is a two-wire system, compatible with 24V DC industrial standard power supply;

-Physical and protective specifications: The shell material is aluminum alloy (optional stainless steel), which has excellent anti-corrosion performance; The process connection method supports multiple types such as threads and flanges (configured as needed); Equipped with high-definition LCD digital display panel, supporting on-site parameter viewing;

-Compliance standards: Complies with the IEC 61010-1 industrial measurement equipment safety standard, has the ability to resist electromagnetic interference (EMI), and has passed international authoritative certifications such as UL and CE.

Performance characteristics

-High precision and stable measurement: adopting advanced capacitive sensing core and digital signal processing technology, built-in high-precision A/D converter, combined with linear correction and temperature compensation algorithms, effectively reducing the influence of temperature drift and environmental interference on measurement results, ensuring long-term stable operation accuracy;

-Intelligent communication and control: Supports HART 7 communication protocol, and can achieve remote parameter configuration, zero/full-scale calibration, fault diagnosis, and other functions through the upper computer system; Equipped with LCD digital display panel and physical function keys, supporting quick on-site debugging and measurement value viewing, easy to operate;

-Strong environmental adaptability: IP65 high protection level design, effectively dustproof and waterproof; The aluminum alloy/stainless steel shell has excellent anti-corrosion and impact resistance performance, and is suitable for harsh industrial scenarios such as high and low temperatures, high dust, etc. with a wide temperature working range. It can be directly installed on site;

-Multiple safety protections: Built in overvoltage protection, short circuit protection, reverse polarity protection and other mechanisms to prevent equipment damage caused by abnormal process pressure and wiring errors; Compliant with electrostatic discharge (ESD) standards to ensure safe wiring and maintenance processes;

-Wide installation adaptability: supports multiple process connection methods and installation postures (horizontal, vertical, inclined), and can be flexibly deployed according to on-site process requirements; Standardized electrical interface design, facilitating quick wiring and system integration;

-Fault self diagnosis: It has a complete self diagnosis function, which can monitor the status of sensing components, circuit operation, and communication links in real time. When abnormalities occur, it sends an alarm signal to the upper system through the HART protocol, and displays the fault code on the LCD panel, making it easy to quickly locate the problem.

Working principle

The core working logic of FOXBORO H90C9AA0117S differential pressure transmitter is to convert the medium differential pressure signal into a standard electrical signal or digital signal through a capacitive sensor, achieving accurate measurement and data transmission. When a differential pressure is generated in the process medium, the pressure acts on the isolation diaphragm of the transmitter and is transmitted to the capacitive sensing element through the filling liquid, causing a slight change in the capacitance value of the sensing element; The capacitance change is converted into a weak voltage signal through the built-in signal conditioning circuit, and then converted into a digital signal through a high-precision A/D converter; The digital signal processor (DSP) performs linear correction, temperature compensation, filtering and other optimization processing on the data to eliminate the influence of environmental temperature and medium characteristics on measurement accuracy; Finally, the processor converts the processed signal into a 4-20mA DC standard analog signal output, and achieves the superposition and transmission of analog and digital signals through the HART protocol, supporting remote interaction with the upper computer. In addition, the transmitter is equipped with a built-in self diagnostic module that monitors the real-time operation status of each component. If a fault is detected, an alarm mechanism is immediately triggered to ensure the reliability and safety of the measurement process.