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Products Description
Product Principle
The core ofthe SMP4030 series pressure transmitteris a high-performance silicon pressure sensor. The sensor converts the measured pressuresignal into an electrical signal througha resistance change principle, whichis then processed and converted into adigital signal by advanced signal processing technology. The device outputs this signal throughthe RS485 communication interface, allowingdata exchange with external systems such ascomputers or PLCs. Built-insoftware compensation technology eliminates the impact ofenvironmental temperature changes on measurement accuracy,ensuring precision in extreme conditions.
Structure Analysis
TheSMP4030 series pressure transmitter is precisely structured, with key components made ofhigh-quality stainless steel to ensure durability and corrosion resistance in variouscomplex environments. The main structural components include:
Housing: Made of 316Lstainless steel, with an IP65 (plug-in type) or IP68 (cable type) protection grade to ensure long-term operation in humid, dusty, and chemical environments.
Pressure Sensor: A high-performance siliconpressure sensor that accurately measures pressure and converts it intoan electrical signal.
Sealing Ring: Made offluororubber to ensure tightness and prevent medium leakage.
Cable: The cable ismade of high-quality polyethylene, offeringexcellent aging resistance and tensile strength.
Interface: Available with variousconnection options, such as the Hirschmannconnector or cable-type connectors, tomeet different installation needs.
MeasurementMethods
The SMP4030 series pressuretransmitter supports three main types of pressuremeasurement: gauge pressure, absolute pressure, and sealed gauge pressure. Thesedifferent measurement methods are suitable for various application scenarios:
Gauge Pressure(G-type): Measures pressure relative to atmospheric pressure, commonly used in industrialapplications.
Absolute Pressure (A-type): Measures pressure relative to a vacuum,suitable for high-precision experimental or equipment applications.
Sealed Gauge Pressure (S-type): Usedfor pressure monitoring in sealed systems, minimizingthe effects of environmental changes on measurementresults.
Technical Parameters
| Parameter | Specification |
|---|---|
| Measuring Range | -0.1 MPato 100 MPa |
| Overload Capacity | 2x Full Range or 110MPa (whichever issmaller) |
| Pressure Type | Gauge, Absolute, Sealed Gauge |
| Power Supply | 9V~28V DC |
| Output Signal | RS485 Modbus |
| Protection Class | IP65for plug-in type, IP68 for cable type |
| Operating Temperature | -30℃ to +80℃ |
| CompensationTemperature | -10℃ to +80℃ |
| Accuracy | ±0.1% FS (minimum) |
| Long-Term Stability | ±0.3% FS/year(maximum) |
| Zero Temperature Coefficient | ±0.03% FS/℃ (≤100 kPa) |
| Span Temperature Coefficient | ±0.03% FS/℃(≤100 kPa) |
Applications
The Nexisense SMP4030 series intelligent pressure transmitter is suitable for variousindustries and applications, including but not limited to:
IndustrialProcess Control: Precisely controls the pressure of liquids andgases in production processes, ensuring safe operation of equipmentand processes.
PetrochemicalIndustry: Used for pressuremonitoring in oil pipelines, refining equipment, and other petrochemical processes toensure stability and safety.
Hydraulic Systems: Used inhydraulic machinery and systems to provide accuratepressure measurements, ensuring the proper functioningof mechanical equipment.
Waterand Environmental Industry: Suitable for water pressure monitoring, ensuring stability in water resource management and hydroelectric power generation.
ElectricalConnections
The electrical connection is flexible,providing both cable-type and plug-inconnection options. The electrical connection specificationsare as follows:
| Electrical Connection | CableType | Plug-in Type |
|---|---|---|
| Positive Power | Black (1) | 1 |
| Negative Power | Red (2) | 2 |
| RS485A | Yellow (3) | 3 |
| RS485B | Blue (4) | 4 |
Summary
The Nexisense SMP4030 series RS485 Modbusintelligent pressure transmitter is a high-precision and reliable measurement device, ideal fora wide range of industrial applications. Its high-performance silicon pressure sensor, advanced digital signal processing, andModbus communication protocol ensurereal-time and accurate pressure monitoringand data transmission. The transmitterperforms exceptionally well in harsh environments,offering outstanding anti-interference capability andlong-term stability. Whether used inindustrial process control, petrochemical,or hydraulic systems, the SMP4030 series provides optimal performance and contributesto the automation and intelligence of industrialequipment, improving overall production efficiency.
