Product Introduction
-
When a metal capacitive differential pressure transmitter operates, pressure acting through the isolation diaphragm and transmission medium causes slight deformation of the metal measuring diaphragm of varying thickness. A high-precision measurement circuit then converts this minute deformation into a voltage signal linearly proportional to the differential pressure signal. After linearization and temperature compensation, a dedicated chip converts this voltage signal into an industrial standard signal. The high sensitivity of the metal capacitive pressure sensor, combined with the use of high-precision integrated circuits in the detection circuit, enables the entire transmitter to achieve exceptional accuracy and stability. Furthermore, the outstanding overload resistance and exceptional performance in micro-pressure measurement make the metal capacitive pressure sensor the preferred choice for various complex industrial environments.
-
The transmitter detects the difference between the two pressure ports and converts it into a high-precision linear electrical signal output. It is widely used to monitor pressure, flow, level, and filter status across various applications.
-
Differential Pressure Transmitter offers broad compatibility with data acquisition systems, PLCs, and control instruments. Provide reliable data support for process control, environmental monitoring and energy management systems.
Features
High-Precision Measurement
Delivers accuracy up to ±0.1%FS with excellent repeatability and long-term stability for trustworthy data.
01
Wide Operating Temperature Range
Functions reliably in extreme conditions from -40 °C to 125 °C, suitable for harsh industrial environments such as severe cold and high temperature
02
Strong Overload Protection
Withstands up to 150% FS safe overpressure and 200% FS burst pressure, ensuring safety and durability.
03
High Immunity to Interference
Designed with excellent EMI resistance and signal stability, ideal for electrically noisy settings.
04
Specifications
| Measured Medium |
Liquid, Gas, or Steam |
| Measuring Range | ±1.5kPa...±7MPa |
|
Output Signal |
4mA to 20mA with superimposed HART protocol digital signal (two-wire system) |
|
Power Supply |
12V to 45V DC, 24V DC typ. |
| Load Characteristics | (Us-12V)/23kΩ |
|
Ratio Down |
At minimum range (range ratio down 40:1), maximum positive migration zero point is 39/40 times URL; maximum negative migration zero point can be LRL. Absolute pressure transmitters have no negative migration. (Regardless of output type, after positive/negative migration, the URL/LRL must not exceed the full scale range) |
|
Operating Temperature Range |
-40°C to 85°C (with digital display: -25°C to 75°C) |
| Storage Temperature Range | -40°C to 85°C |
| Relative Humidity | 0% to 95% RH |
| Overpressure Limit | Transmitters with ranges 3 to 7MPa withstand 0 (absolute pressure) to 13MPa without damage Normal operating pressure ranges from 3.43 kPa (absolute pressure) to the upper limit of the range |
| Volume Change | Less than 0.16 cm³ |
| Damping Time | Time constant adjustable between 0.2 s and 32.0 s |
| Startup Time | 3s, no warm-up required |
| Accuracy | ±0.1% |
| Temperature Effect | ±0.2%URL/20°C |
| Line Pressure Effect | After stabilizing at an additional static pressure of 14 MPa, the zero-point error is +0.25% of the full-scale range. Prior to installation, the transmitter zero point can be calibrated according to the actual static pressure to eliminate this error. |
| Power Supply Effect | 0.005%/V of output range |
| Vibration Effect | ±0.05%FS/g (any axis, frequency 200Hz) |
| Load Effect | Load Effect No load effect within the load working range (transmitter supply voltage above 12V) |
| Mounting Position Effect | Maximum zero error of no more than 0.10kPa, which can be eliminated through calibration and has no effect on the measurement range Rotation of the measuring body relative to the flange has no effect |
Application
HVAC Systems
Used to measure pressure drop across air filters, monitor clogging status, and trigger maintenance alerts; also employed in airflow and ventilation rate monitoring within supply ducts and cleanrooms.
Industrial Process Control
Measures flow rates of gases or liquids in pipelines using orifice plates or Venturi tubes; monitors pump and compressor health; detects blockages in filters and strainers.
Liquid Level Measurement
Determines tank liquid level and volume by measuring the pressure difference between top and bottom connections, widely used in chemical storage, water treatment, and fuel tanks.
Energy Management Systems
Monitors combustion air pressure or furnace draft pressure to optimize burning efficiency in boilers and heaters, supporting energy saving and emission reduction.
Medical and Health Equipment
Provides precise airflow and pressure monitoring in ventilators, anesthesia machines, respiratory devices, and laboratory air handling systems.
This highly adaptable Differential Pressure Transmitter delivers reliable performance where accurate differential pressure measurement is essential for safety, efficiency, and process integrity.
Kind Tips
Installation Orientation: Ensure the markings on the sensor (such as high-pressure/low-pressure ports) are consistent with the flow direction of the medium to avoid measurement errors or damage caused by reverse connection.
Pressure Connection: Use suitable seals (e.g., O-rings) and evenly tighten connections without applying torque directly to the housing.
Overload Protection: Apply pressure gradually during system start-up to prevent pressure shocks or water hammer, even with built-in overpressure protection.
Electrical Connection: Use shielded cables with proper grounding to minimize EMI. Handle connections with ESD protection and avoid mechanical stress on pins.
Media Compatibility: Verify compatibility between the medium and stainless steel wetted materials. Use isolators for highly corrosive media.
For further details, please refer to the product manual or consult our technical team-we are committed to providing professional support and solutions for your needs.
FAQ
Q: What media are your transmitters compatible with?
A: Most models feature 316 stainless steel isolating diaphragms, making them compatible with a wide range of gases and liquids, including clean, dry air and non-corrosive media. Special materials are available for aggressive media.
Q: What kind of technical support do you offer after the sale?
A: Our support doesn't end at the sale. We provide comprehensive technical support, including installation guidance, troubleshooting assistance, and application consulting. Our team of engineers is available to help you ensure the sensor integrates seamlessly into your system.
Q: What is your warranty policy?
A: We offer a standard 12month warranty on all our intrinsically safe flowmeters, every flowmeter undergoes rigorous factory acceptance testing (FAT) under simulated operational conditions. We provide a certificate of conformity with each shipment.
Q: What is your lead time for standard and custom orders?
A: Standard models typically ship within 2-4 weeks. Lead times for custom solutions vary based on complexity and will be confirmed at the time of quotation.
Hot Tags: metal capacitive differential pressure transmitter, China metal capacitive differential pressure transmitter manufacturers, suppliers, factory, Metal Capacitive Differential Pressure Transmitter, Absolute Gauge Pressure Transmitter, process pressure transmitter, pressure indicator and transmitter, pressure transmitter absolute, atmospheric pressure transmitter
