JW-DM01X(JY04) High accuracy capacitive differential pressure transmitter with Inconel diaphragm, dry capacitive sensing, 4 to 20mA, 0 to 10VDC and RS485 output for semiconductor, aerospace, boiler negative pressure and industrial process control.
2. Product Overview
JW-DM01X(JY04) The capacitive differential pressure transmitter is designed for accurate low differential pressure measurement in demanding industrial and high precision applications. It uses a metal capacitive sensing principle, where the Inconel diaphragm is welded between two chambers. When differential pressure changes, the diaphragm displacement changes the distance between the diaphragm and the electrodes, generating a linear capacitance variation.
With a dedicated signal conditioning circuit, the capacitance signal is converted into mV output and further processed through signal amplification, linear adjustment and anti interference design. The transmitter provides standard industrial outputs such as 4 to 20mA, 0 to 10VDC and RS485, making it suitable for integration with PLC systems, data acquisition units, process controllers and automation monitoring platforms.
The dry capacitive structure requires no filling oil and is suitable for applications requiring high stability, corrosion resistance, wear resistance and reliable long term measurement.
Item
Specification
Pressure Range
-200 kPa to 200 kPa
PSI Range
-30 PSI to 30 PSI
Pressure Type
Differential Pressure
Output Signal
4 to 20mA 0 to 10VDC RS485
Input Voltage
15 to 30VDC
Accuracy Class
0.1 percent FS 0.2 percent FS 0.5 percent FS
Zero Drift
0.01 percent FS per °C 0.02 percent FS per °C 0.05 percent FS per °C
Sensitivity Drift
0.01 percent FS per °C 0.02 percent FS per °C 0.05 percent FS per °C
Compensation Temperature
0 to 50°C or -10 to 70°C
Working Temperature
-20 to 125°C
Storage Temperature
-40 to 80°C
Long Term Stability
≤0.2 percent FS per year or ≤0.5 percent FS per year
Response Time
Less than 1 ms
Static Pressure Resistance
2 MPa
Overload Capacity
200 percent
Load Resistance
R equals U minus 12.5 divided by 0.02 minus R0
Measuring Medium
Corrosive media compatible with Inconel
Diaphragm Material
Inconel
Housing Material
316L Inconel
Electrical Connection
KF2EDG 3.81 or customized
Process Connection
KF16 or customized
Protection Grade
IP65
Explosion Proof Grade
Not available
3. Product Outline of Metal Capacitive Differential Pressure Transmitter
4. Metal Capacitive Differential Pressure Transmitter Wiring Method
5. Application Scenarios
Semiconductor Manufacturing: The capacitive differential pressure transmitter can be used in clean process systems, gas delivery systems, vacuum related equipment and precision pressure control applications in semiconductor production.
Aerospace Applications: With high accuracy, high stability and dry capacitive sensing, it is suitable for aerospace test systems, pressure calibration equipment and precision differential pressure monitoring.
Boiler Negative Pressure Monitoring: The transmitter supports low differential pressure and negative pressure measurement in boilers, flue gas systems, combustion systems and industrial ventilation control.
Industrial Process Control: It can be integrated into industrial automation systems for process differential pressure measurement, filter monitoring, pipeline pressure difference detection and equipment control.
FAQ
Q
1. What is a capacitive differential pressure transmitter used for?
A
A capacitive differential pressure transmitter is used to measure the pressure difference between two points in industrial systems, such as filters, pipelines, boilers, gas systems and process control equipment.
Q
2. What is the measuring range of this differential pressure transmitter?
A
The transmitter supports a differential pressure range from -200 kPa to 200 kPa, or -30 PSI to 30 PSI, depending on the selected configuration.
Q
3. Can JW-IoT provide RS485 output for this product?
A
Yes. JW-IoT can provide RS485 output as well as 4 to 20mA and 0 to 10VDC output options for different automation and monitoring systems.
Q
4. Why is Inconel used as the diaphragm material?
A
Inconel provides strong corrosion resistance, wear resistance and high stability, making it suitable for corrosive media and demanding industrial environments.
Q
5. Is this transmitter suitable for semiconductor manufacturing?
A
Yes. Its dry capacitive structure, high accuracy and stable low pressure measurement performance make it suitable for semiconductor process equipment and clean industrial systems.
Q
6.Can JW-IoT customize the process connection?
A
Yes. JW-IoT can provide KF16 process connection as well as customized process connections according to installation requirements.
Q
7. What output signals are available?
A
Available output signals include 4 to 20mA, 0 to 10VDC and RS485, allowing easy integration with PLCs, controllers, data loggers and IoT monitoring platforms.
Q
8. Can this product measure boiler negative pressure?
A
Yes. It is suitable for boiler negative pressure monitoring, flue gas pressure difference measurement and industrial ventilation pressure control.
Q
9. Can JW-IoT support project based configuration?
A
Yes. JW-IoT can support project based configuration for pressure range, output signal, electrical connection, process connection, housing material and system integration requirements.
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