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Products Description
Product Overview
The Nexisense SMP4009 Series General PurposeResistive Pressure Transmitter is ahigh-performance product designed for fluid pressure detection and control, utilizing resistivesensor technology. It offers adjustable zero and full-scale outputs to meet various measurement requirements. With highstability and reliability, it is widely used inindustries such as oil, chemicals, power, hydrologicalexploration, and geology. This transmittermeets national standards and features short-circuit protection and reverse-polarity protection, ensuring safeand stable operation in harsh environments.
Principle
The Nexisense SMP4009 Series Pressure Transmitter operates based on the resistive sensor principle. The resistive sensor utilizesthe piezoresistive effect: when pressure is applied to thesensor diaphragm, the electrical resistance ofthe sensor material changes. This changeis converted into a standard electrical signal, which is then output to thecontrol system.
The core principle of resistivesensors is the use of specific materialswhose electrical resistance changes when subjected to force.The pressure on the sensor diaphragm causes slight deformation of the diaphragm, leading to achange in the material's electrical resistance. This change enables precise measurement ofthe pressure applied to the diaphragm.Resistive pressure sensors offer high sensitivityand low non-linearity, makingthem suitable for a wide range of fluidpressure measurement applications.
Structure Analysis
The structure of the SMP4009 Series Pressure Transmitterincludes:
Sensor Part: Made from high-stability316L stainless steel, it hasstrong corrosion resistance and high-pressure resistance, ensuring long-term stable operation in various harsh environments.
Shell: Made of stainless steel, it has excellentprotective performance, effectively resisting external environmental influences.The protection rating can reach IP65(plug-in type) and IP68 (cable type).
Sealing Ring: Equipped with a fluororubber sealing ring toensure good sealing and corrosion resistance in variousworking mediums.
Electrical Connection: Supports HERMES and cable-type connections, providing flexible electrical interfaceoptions.
Measurement Method
The SMP4009 Series Pressure Transmitter can measure various pressuretypes, including:
Gauge Pressure: Measures pressure relative to atmospheric pressure,suitable for most industrial applications.
Absolute Pressure: Measures pressurerelative to a vacuum, commonly usedin applications that require precise measurement ofatmospheric pressure influence.
SealedGauge Pressure: Measures pressurerelative to a sealed reference pressure,suitable for sealed pressure environments.
This product also supports multiplesignal output options, including:
Current Output: 4mA to20mA DC (two-wire system)
Voltage Output: 0/1Vto 5/10V DC(three-wire system)
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement Range | -0.1 MPa ~ 0MPa ~ 100 MPa |
| Overload Pressure | 2 times full-scale pressureor 110 MPa (whichever is smaller) |
| Pressure Type | Gauge Pressure, Absolute Pressure, SealedGauge Pressure |
| Output Signal Type | Current: 4mA to 20mA DC; Voltage: 0/1V to5/10V DC |
| PowerSupply | 9 to 30V DC (Current);12 to 30V DC (Voltage) |
| Load Resistance | Current: ≤(U-9)/0.02; Voltage: ≥10kΩ |
| Insulation Resistance | ≥100MΩ at 100V DC |
| Shell Material | 316L Stainless Steel |
| Sealing Ring | Fluororubber |
| Protection Rating | Plug-in: IP65; Cable: IP68 |
| Working Temperature | -30℃to +80℃ |
| Storage Temperature | -40℃ to +125℃ |
| Accuracy | ±0.25%FS (Typical); ±0.5%FS (Maximum) |
| Long-Term Stability | ±0.3%FS/year (Maximum) |
Electrical Connection
The SMP4009 series supports thefollowing electrical connection options:
Plug-in Connection: Suitable for standard pin connections, convenientfor integration into various devices.
Cable Connection: Uses a dedicatedcable (7.5mm polyethylenecable), offering high flexibility andreliability for various field applications.
Selection Guide
To choosethe appropriate SMP4009 Series Pressure Transmitter, you need to consider thefollowing key parameters:
Range: Select the appropriatepressure range based on your measurement requirements, such as0-100 kPa.
OutputSignal: Choose the required output type (current or voltage).
Material and Interface: Choose 316L stainless steel material and the appropriate pressure interface(e.g., G1/2 external thread or M20×1.5 external thread) according to your working environment.
Additional Features: Select options such as HERMES connectionsor cable connections based on your needs.
Application Fields
The SMP4009 Series General PurposeResistive Pressure Transmitter is suitable for the followingindustries:
Oil & Chemical Industry: Used for pressure detectionin oil and gas exploration, refining, and chemical processes.
Power Industry: Used in power plants and transmissionsystems for fluid pressure monitoring.
HydrologicalExploration: Used for water resourcemonitoring and underground water level measurements.
Equipment Matching: Suitablefor use in hydraulic systems and equipment integration.
Product Summary
The Nexisense SMP4009 Series General Purpose ResistivePressure Transmitter is astable and reliable high-performance product suitable for a wide range of industrial applications. With its high-precision measurement capability, excellent protective performance, and flexible output options, it plays a critical role in fluid pressure detection across industries such asoil, chemicals, and power. The product offersrobust anti-interference capabilities, supporting gauge pressure, absolute pressure, and sealedgauge pressure measurement to meet the needs of various complex environments.
Bychoosing the SMP4009 Series Pressure Transmitter, you will benefit from a high-stability, high-reliability sensor that enablesprecise fluid pressure monitoring and control, ensuringthe safety and efficiency of yoursystems.
