Differential Pressure Transmitter  Manufacturers, Traders, Suppliers

Pressure sensors (also known as pressure cans, pressure load cells or pressure transmitters) differ, apart from the design and the output signal, mainly in the type of reference pressure for pressure measurement: here there are pressure sensors for relative pressure, absolute pressure and differential pressure transducers.
In a pressure sensor for relative pressure, the back of the sensor element is exposed to the air pressure surrounding us. In a typical setup, a small tube leads from the back of the sensor to the plug or through the connection cable. These pressure sensors have the advantage that fluctuations in air pressure are not reflected in a fluctuation of the output signal.
The pressure sensor for absolute pressure has a small chamber on the back of the sensor membrane which is completely evacuated, i.e. the chamber is 0 bar absolute. These pressure sensors show the current air pressure, which is typically between 950 and 1050 mbar, as long as no measuring pressure is present. Changes in air pressure (e.g. due to a rising high or low) therefore lead to a change in the measuring signal without changing the actual pressure value. A special type of absolute pressure sensors are barometers, which measure the ambient air pressure very precisely. A special form of the pressure sensor is the so called sealed gauge version. Here, the reference chamber is sealed tightly at approx. 1000 mbar. These pressure sensors are mainly used for measuring ranges >10 bar. Closing the reference chamber prevents, for example, aggressive gases from entering the reference chamber and causing corrosion.
Another special form of pressure sensors are so-called differential pressure sensors or pressure transducers. Here the back of the sensor membrane is mechanically constructed in such a way that it can be used as an independent pressure connection for pressure measurement. A pressure sensor (pressure cell or pressure load cell) in this version therefore indicates zero at the same pressure on the input and reference sides. Differential pressure sensors differ substantially in their mechanical construction. Here there are simple designs which, for example, only allow dry gases for the reference side or also high-quality pressure transmitters which allow an overload (even on one side) of more than 200 bar at a small nominal measuring range of 35 mbar.
Pressure transmitters often have a very robust mechanical design and have a 4...20 mA output signal which is common in process measurement technology.

Pressure transmitters are intended for measuring absolute and gauge pressure of gases, vapors and liquids.

Supply voltage: 18...32V DC
Current consumption: < 30mA
Output current: 4-20mA, two-wire system
load resistance: >500Ohm
Reverse polarity protection: yes
operating temperature: -25...80 °C
Storage temperature: -25...100 °C
Protection class: IP 67, according to EN60529
Time constant: approx. 200ms for rising output signal 10% to 90%
Overpressure: -0.3 bar to +4 bar max.
Overall accuracy: 0.5% f.s.

Measurement of low pressures up to 100mbar:
Oil mist, air, oil, liquids

The range of AMSYS pressure sensors extends from wafer level silicon sensors to simple SMD-mountable sensors and compensated dual-in-line sensors to packaged, ready-to-use pressure transmitters.
In addition to pressure sensors and inclinometers, AMSYS offers miniaturized OEM sensors for humidity and t

HC5 Series Pressure Transmitters - English Keywords Description
The HC5 series by Anhui Hechuang Intelligent Manufacturing Co., Ltd. is a professional-grade pressure transmitter product line designed for industrial measurement and control applications. Key variations and features include:
1. Product Configurations
Connection Types
Single flange connection (ideal for standard piping systems)
Dual flange connection (for differential pressure measurement)
Accuracy Classes
Standard precision (±0.5% FS typical)
High precision (±0.25% FS or better)
2. Technical Specifications
Output Options: 4-20mA, HART protocol (optional)
Pressure Ranges: Customizable (from low to high-pressure applications)
Process Compatibility: Compatible with liquids, gases, and steam
Environmental Protection: IP65/IP67 rated for harsh conditions
3. Key Applications
Petrochemical/refining processes
Water/wastewater treatment systems
HVAC and energy management
OEM equipment integration
4. Certifications & Standards
CE, RoHS compliant
Industrial EMI/EMC protection
5. Manufacturer Details
Chinese Website: www.ahhczn.com
English Website: hechuangintelligent.en.made-in-china.com
Note: For full technical documentation or customization requests, contact the manufacturer directly via official channels. Specifications may vary by model.

Taking HC51TG intelligent high-precision pressure transmitter as an example:
Suitable for absolute and gauge pressure measurement of gases, vapors, or liquids in various process control fields;
Measurement of liquid level, volume, or mass;
The maximum pressure can reach 700 bar;
Accuracy:+0.075% of the range span;
For the case where the range ratio is greater than 10:1,
Accuracy=± [0.015+0.005 of span (URL/span)%.

Suitable for absolute and gauge pressure measurement of gases, vapors, or liquids in various process control fields;
Measurement of liquid level, volume, or mass;

KROHNE is a global manufacturer and provider of instrumentation, measurement solutions and services. Founded in 1921 and headquartered in Duisburg, Germany, we offer extensive application knowledge and local contacts for instrumentation projects in over 100 countries. KROHNE stands for innovation and high quality products as one of the market leaders in the process industry.
KROHNE specializes in process measurement – from field instrumentation to system solutions – and is a full-service provider for flow, level, pressure, temperature and process analytics products, accompanied by a broad range of services. We have proven experience working with many customers across most industries, including but not limited to chemical, oil & gas, food & beverage, water & wastewater, power generation and distribution, marine, as well as mechanical and plant engineering.
Today, KROHNE employs more than 4,000 people, operates 15 production facilities and owns 44 companies worldwide while remaining an independent, family-owned company. Our aim is to provide the right measurement solutions for our customers’ process measurement applications. We achieve this by manufacturing innovative, reliable, high-quality products and services, employing qualified and motivated people and maintaining long-term, reliable partnerships with our business partners.

Differential pressure sensor/transducer is a sensor used to measure the difference between two pressures, usually used to measure the pressure difference between the front and rear ends of a certain equipment or component.
XDB600 intelligent pressure transmitter is assembled with aluminum housing and stress isolation technology. Integrated structure design lead to compact layout. With intelligent compensation technology.
It is suitable for wind pressure,wind speed & flow measurement. It is widely used in various industrial fields as well as intelligent building and other construction projects, such as power plant boiler primary air,secondary air measuring, mine ventilation,indoor ventilation, boiler air, pressure of fan, air duct pressure, Metro wind pressure and environment wind pressure test.

Output analog data

It is the most commonly used sensor in industrial practice. It is widely used in various industrial automation environments, including water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, machine tools, pipelines and many other industries.