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Products Description
Definition andApplication Fields
The Nexisense SMP4031series digital intelligent pressure transmitter is a high-precision industrialpressure sensor, using stainless steel isolation membrane silicon piezoresistive sensors as the core measurement element, combined with dedicated IC circuits for signalcompensation and correction. This transmitter converts pressure signals into a4-20mA output, while supporting both HART protocoland RS485 Modbus protocol digitalcommunication. It is widely used infields such as petroleum, chemical, electric power, metallurgy, andother industrial pressure measurements.
Designed toadapt to a variety of extreme environments,the product features high anti-interferencecapability and long-term stability, makingit suitable for hydraulic measurement, industrialprocess control, and precise pressure measurementin harsh environments.
Working Principle
TheNexisense SMP4031series pressure transmitter usesa silicon piezoresistive sensor asthe core measurement element. Whenexternal pressure is applied, the piezoresistive elements inside thesensor generate a resistance change proportionalto the pressure. This signal isthen compensated and corrected by a dedicatedcircuit to ensure accurate measurements under variousenvironmental conditions.
The transmitter converts the pressure signalinto a standard 4-20mA analogoutput, which can be monitored in real-time by a PLC, DCS, or other communication devices. The transmitter supports both HART protocol and RS485 Modbusprotocol, enabling remote configuration, debugging, and data acquisition.
Structure Analysis
The Nexisense SMP4031 series digital intelligent pressuretransmitter is designed with a compact and rugged die-cast aluminum housing, offering explosion-proof features,making it suitable for complex industrial environments. The sensor partis made of 316L stainless steel,resistant to corrosion from most aggressive media, ensuring reliable long-term operation.
| Component | Material |
|---|---|
| Housing | Explosion-proofdie-cast aluminum |
| Sensor | 316L Stainless Steel |
| Seal | Fluororubber |
| Display | LCD Screen |
The device is rated to IP65 protection, ensuring stable performance even in environments with highhumidity and dust. The transmitter alsohas lightningprotection and shock resistance features,making it ideal for fluctuating working conditions andensuring accurate data collection and device safety.
Measurement Methods
The SMP4031series intelligent pressure transmitter supports three typesof pressure measurement: gauge pressure, absolute pressure,and sealed gauge pressure.Users can select the appropriate type basedon their specific application:
Gauge Pressure: Measures pressure relative to atmosphericpressure, suitable for most industrial applications.
Absolute Pressure:Measures pressure relative to a vacuum (zero pressure), ideal for applications whereabsolute pressure is needed.
Sealed Gauge Pressure:Measures pressure within a closed system,falling between gauge and absolute pressuremeasurements.
PerformanceParameters
| Parameter | Value |
|---|---|
| Measuring Range | -0.1 MPa to 100 MPa |
| Overload Capacity | 2x Full Scaleor 110 MPa (whichever is lower) |
| Pressure Type | Gauge Pressure, Absolute Pressure, Sealed Gauge Pressure |
| Output Signal | 4-20mA + HARTProtocol / RS485 Modbus Protocol |
| Power Supply | 9-28VDC |
| Accuracy | ±0.1%FS (minimum), ±0.25%FS (typical) |
| Long-term Stability | ±0.3%FS/year (maximum) |
| Compensation Temperature | -10°C to 80°C |
| OperatingTemperature | -30°C to 80°C(LCD Type: -20°C to 80°C) |
| Protection Level | IP65 |
Featuresand Advantages
High Precision Measurement: The transmitter uses silicon piezoresistive sensors and dedicated IC correction circuits, ensuring high-precision measurements withan accuracy of ±0.1%FS, meeting the needs ofmost industrial applications.
Strong Anti-interference Capability: Theproduct is designed to enhance anti-lightning and anti-shock functions,especially suitable for environments with high electromagneticinterference.
Support for HARTand RS485 Communication Protocols: Userscan remotely configure and collect data usingdigital communication protocols, making it easierto integrate and maintain in systems.
Adjustable Zero and Full Scale: The device is preciselycalibrated before leaving the factory, butusers can adjust the zero and fullscale as needed based on actual demands.
High Temperature and Pressure Resistance: The transmittercan operate in temperatures ranging from -30°C to80°C and is built to withstandoverload conditions, ensuring stable long-termoperation.
Application Fields
The NexisenseSMP4031 series digital intelligent pressure transmitter is widely used inthe following fields:
Industrial Process Control:Used for precise pressure measurement and controlin chemical, petroleum, metallurgy,and other industries.
Hydraulic Systems: Usedfor pressure measurement and control in hydraulicsystems, ensuring stable system operation.
Pressure Detection in Harsh Environments: Suitable for hightemperature, high pressure, or corrosive environments, ensuring the stabilityof the equipment.
Conclusion
The Nexisense SMP4031 series digital intelligent pressure transmitteroffers high precision, high stability, and versatility across various application fields,making it an ideal choice for modernindustrial processes. Whether used in harshenvironments or for applications requiring high precision, this product ensures reliable data support, improving production efficiency and safety.Its robust design, intelligent communication protocol, and ease of adjustment make itan irreplaceable solution in the fieldof pressure measurement.
Choosing the Nexisense SMP4031 series digital intelligent pressure transmitter means choosing a high-quality productsupported by comprehensive technical support and after-sales service. Itis your trusted partner in pressure measurement.
