What is a Differential Pressure Transmitter?
A Differential Pressure Transmitter (DP Transmitter) is an industrial device used to measure the pressure difference between two points in a process system. It converts the differential pressure into a proportional electrical signal (4–20 mA, HART, or Modbus), enabling precise monitoring of fluid flow, liquid level, and filter conditions.
The device mainly consists of a sensing diaphragm, pressure ports (high and low side), an electronic circuit, and a signal output module.
Differential Pressure Transmitter
The Differential Pressure Transmitter accurately measures pressure differences in liquids, gases, or steam, offering reliable performance and optional digital output for industrial monitoring.
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Differential Pressure Transmitter with Remote Mount Diaphragm Seals
The Differential Pressure Transmitter with Remote Diaphragm Seals provides accurate, stable measurement of pressure, level, and flow while isolating the sensor from harsh media in industrial applications.
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Differential Pressure Transmitter with Direct Mount Diaphragm Seal
The Differential Pressure Transmitter with Direct Mount Diaphragm Seal provides fast, accurate differential pressure measurement for liquids, gases, and steam in industrial and HVAC applications.
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Types of Differential Pressure Transmitters
Standard Differential Pressure Transmitter – Designed for clean liquids and gases, offering high stability and precision in general process measurement.
Differential Pressure Transmitter with Remote Mount Diaphragm Seals – Ideal for high-temperature, corrosive, or viscous media. Equipped with capillary tubing for remote installation.
Differential Pressure Transmitter with Direct Mount Diaphragm Seal – Compact design, suitable for sanitary or confined installation environments such as food or pharmaceutical processing.
Features of Differential Pressure Transmitters
High accuracy
Output signal options: 4–20 mA, HART, Modbus RTU
Wetted parts in SS316L, Hastelloy, Tantalum, or PTFE
Optional remote diaphragm seals for harsh conditions
Explosion-proof and waterproof design
Long-term stability and fast response time
Compact, easy to install, and maintain
Applications of Differential Pressure Transmitters
Flow measurement in pipelines and filtration systems
Level measurement in pressurized tanks and vessels
Monitoring pressure drops in filters and heat exchangers
Process control in oil refining, chemical plants, and water treatment systems
Steam flow measurement in power and energy sectors
Differential Pressure Transmitter OEM Service
ZINACA provides OEM and ODM services for differential pressure transmitters, including logo customization, housing design, process connection selection, and calibration according to customer requirements.
If you are looking for a reliable OEM partner for pressure transmitters or diaphragm-sealed instruments, ZINACA can offer complete engineering and production support.
Differential Pressure Transmitter Manufacturer
Tianjin ZINACA Intelligent Equipment Co., Ltd. is a leading manufacturer of differential pressure transmitters in China, specializing in industrial automation instruments for pressure, temperature, flow, and level measurement.
With ISO, CNAS, and SIL certifications, ZINACA ensures stable product quality and global service coverage.
If you are searching for a trusted differential pressure transmitter supplier or manufacturer, please contact ZINACA Instruments — your professional partner for industrial process control solutions.
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