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3151TG Smart Pressure Transmitter
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3151TG Smart Pressure Transmitter
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The 3151TG Smart Pressure Transmitter is an intelligent industrial pressure transmitter designed for accurate pressure measurement of liquids, gases, and steam. It supports a wide measuring range, local LCD display, on-site zero and span adjustment, adjustable damping, HART communication, and standard 4–20 mA DC output for PLC/DCS integration.
With a compact and rugged structure, modular electronics, anti-vibration design, electromagnetic interference protection, and 316L stainless steel wetted parts, the 3151TG is suitable for process pressure monitoring in chemical, petrochemical, power generation, water treatment, metallurgy, oil and gas, and general industrial automation applications.
The 3151TG smart pressure transmitter is a high-precision intelligent field instrument used for process pressure measurement. It can measure pressure in liquid, gas, and steam applications and convert the measured value into a standard 4–20 mA DC analog signal with HART communication.
The transmitter supports local configuration and remote communication. Users can adjust zero point, span, engineering unit, damping time, output function, alarm setting, and other parameters through local buttons, a HART handheld communicator, or a host system.
Although the product name is 3151TG Smart Pressure Transmitter, the 3151 series platform can also support differential pressure, gauge pressure, absolute pressure, level, vacuum, and density-related measurement applications depending on the selected model and sensor range.
The 3151TG pressure transmitter provides standard industrial output signals for process automation systems.
| Output Type | Description |
|---|---|
| 4–20 mA DC + HART | Analog pressure signal with digital pressure and temperature communication |
| EPA / FF / PROFIBUS PA | Full digital fieldbus communication options for pressure, temperature, and percentage range data |
The 4–20 mA + HART version is suitable for most conventional pressure measurement loops. It allows the transmitter to send analog process signals to PLC/DCS systems while also supporting digital communication for configuration, diagnostics, and maintenance.
The 3151TG provides flexible pressure range options. For gauge pressure applications, the measurement range can cover from very low pressure up to high-pressure industrial service.
Typical series range options include:
The exact range depends on the selected sensor module and model configuration.
The transmitter uses a compact and robust housing design. It is suitable for field installation in industrial environments where vibration, mechanical stress, and harsh operating conditions may be present.
The transmitter housing includes local zero and span adjustment functions. Operators can perform on-site adjustment without complex external tools, which simplifies installation, calibration, and commissioning.
The optional local digital LCD display can show multiple parameters in a cyclic display mode, including:
This helps operators check field conditions directly at the transmitter.
With HART communication, users can configure and monitor the transmitter through a handheld communicator or host system. This supports remote parameter setting, diagnostics, maintenance, and loop checking.
The damping time can be configured according to process conditions. This is useful when the measured pressure fluctuates or when a smoother output signal is required.
The intelligent circuit design supports transmitter diagnostics and improves fault recovery capability, helping reduce maintenance workload and improve operational reliability.
The transmitter uses solid plug-in printed circuit boards and a modular structure. This design helps simplify troubleshooting, reduce spare parts inventory, and improve maintenance convenience.
Independent electromagnetic interference protection circuits and software anti-interference design help improve reliability in industrial sites with electrical noise, motors, inverters, and complex wiring environments.
The wetted components are made of 316L stainless steel, suitable for many common industrial liquids, gases, and steam applications. For corrosive media, material compatibility should still be confirmed carefully.
| Item | Specification |
|---|---|
| Product Name | 3151TG Smart Pressure Transmitter |
| Product Type | Smart Industrial Pressure Transmitter |
| Measured Media | Liquid, Gas, Steam |
| Main Output | 4–20 mA DC + HART |
| Optional Digital Output | EPA, FF, PROFIBUS PA |
| Gauge Pressure Range | 0–0.15 kPa to 42 MPa |
| Differential Pressure Range | 0–0.05 kPa to 7 MPa |
| Absolute Pressure Range | 0–40 kPa to 7 MPa |
| Medium Temperature at Sensor Contact | -40°C to +85°C |
| Display Parameters | Pressure, Current, Percentage Range, Sensor/Medium Temperature |
| Local Configuration | Zero, Span, LCD Display Parameters |
| Main Configuration Functions | Zero Migration, Range, Unit, Damping, Alarm, Current Calibration, Write Protection, Output Function, Factory Data Recovery |
| Wetted Material | 316L Stainless Steel |
| Communication | HART / Fieldbus Options |
| Typical Applications | Pressure, DP, Level, Vacuum, Density-Related Measurement |
The 3151 series can be selected according to different measurement parameters.
| Measurement Type | Typical Range |
|---|---|
| Differential Pressure | 0–0.05 kPa to 7 MPa |
| Gauge Pressure | 0–0.15 kPa to 42 MPa |
| Absolute Pressure | 0–40 kPa to 7 MPa |
For the 3151TG smart pressure transmitter, gauge pressure measurement is the main application. If the project requires differential pressure or absolute pressure measurement, the corresponding 3151 series model should be selected according to the application.
The 3151TG smart pressure transmitter is designed to make field operation easier. The local LCD display and configuration buttons allow users to check key operating data and perform basic parameter setting directly at the instrument.
The display can show:
| Display Item | Function |
|---|---|
| Measured Pressure | Displays real-time process pressure |
| Analog Output Current | Displays the 4–20 mA output value |
| Percentage Range | Displays pressure as percentage of configured range |
| Sensor / Medium Contact Temperature | Displays temperature information from the internal sensor |
This multi-parameter display is useful during commissioning, maintenance, troubleshooting, and routine site inspection.
The 3151TG smart pressure transmitter consists mainly of a sensor module and an electronic circuit module.
The sensor section includes:
The electronics section includes:
During operation, the pressure sensing element detects the process pressure. The signal is processed by the sensor circuit and microprocessor. Temperature compensation and characterization data are used to improve measurement stability. The final signal is converted into 4–20 mA DC output and digital HART communication data.
In simple terms:
Process Pressure → Sensor Module → Digital Signal Processing → 4–20 mA DC / HART Output
The 3151TG can be used for pressure monitoring in reactors, pipelines, pumps, tanks, separators, distillation systems, and process equipment. For corrosive media, diaphragm and connection material compatibility should be checked before selection.
Suitable for boiler auxiliary systems, steam lines, feedwater systems, condensate systems, cooling water, and utility pressure monitoring. For high-temperature steam, a syphon, cooling element, or diaphragm seal may be required.
Applied in oil and gas pipelines, compressor stations, gas systems, fuel systems, pressure control skids, and auxiliary process lines where stable pressure measurement is required.
Used in pumping stations, filtration systems, water distribution systems, desalination equipment, wastewater treatment, and industrial utility pressure monitoring.
The series can be configured for low-pressure, vacuum, or absolute pressure applications depending on sensor selection and model configuration.
The 3151TG is suitable for PLC/DCS systems requiring standard 4–20 mA HART pressure input for continuous monitoring and control.
When selecting a 3151TG smart pressure transmitter, the following details should be confirmed:
Depending on site requirements, the 3151TG smart pressure transmitter may be used with:
For steam, corrosive media, high temperature, strong vibration, or hazardous areas, accessory selection should be confirmed together with transmitter model selection.
SIYelectric supplies 3151TG smart pressure transmitters for industrial projects, replacement orders, and process instrumentation procurement. We can help check model codes, review technical parameters, confirm pressure range, match installation accessories, and prepare quotations based on actual operating conditions.
For accurate quotation, please provide:
SIYelectric can also support related pressure transmitter accessories such as manifolds, gauge valves, needle valves, mounting brackets, syphons, cooling elements, explosion-proof cable glands, gaskets, tubing, fittings, and HART communicators.
Available documents may include technical datasheet, certificate of conformity, inspection report, packing list, and commercial invoice, depending on order and project requirements.
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