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3151GP Pressure Transmitter
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pressure transmitter shop
3151GP Pressure Transmitter
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The 3151GP Pressure Transmitter is a smart gauge pressure transmitter designed for industrial pressure measurement of liquids, gases, and steam. It provides a wide measuring range from 0–0.15 kPa to 42 MPa, with 4–20 mA DC output and HART communication for connection to PLC, DCS, handheld communicators, or host systems.
With a compact anti-vibration structure, local LCD display, zero and span adjustment, adjustable damping, modular electronics, anti-interference design, and 316L stainless steel wetted parts, the 3151GP is suitable for process pressure monitoring in chemical, petrochemical, power generation, water treatment, oil and gas, metallurgy, and general industrial automation applications.
The 3151GP pressure transmitter is an intelligent field instrument used to measure gauge pressure in industrial process systems. It can be applied to liquid, gas, and steam pressure measurement, converting the measured pressure into a standard 4–20 mA DC signal with HART communication.
The transmitter supports both local operation and remote configuration. Users can adjust zero point, span, engineering unit, damping time, alarm function, output current calibration, and other parameters through local configuration buttons, a HART handheld communicator, or an upper-level control system.
Compared with basic pressure sensors, the 3151GP is designed for industrial applications where measurement stability, field display, remote communication, fault diagnostics, and easy maintenance are important.
The 3151GP smart pressure transmitter provides standard output signals for process control systems.
| Output Type | Description |
|---|---|
| 4–20 mA DC + HART | Analog pressure output with digital communication for configuration and diagnostics |
| EPA / FF / PROFIBUS PA | Optional full digital fieldbus communication for pressure, temperature, and percentage range data |
For most industrial pressure measurement loops, 4–20 mA with HART is the most commonly used option. It allows the transmitter to provide a reliable analog signal to the PLC or DCS while still supporting remote setup and diagnostics.
The 3151GP covers a broad pressure range from 0–0.15 kPa to 42 MPa, depending on the selected sensor range. This makes it suitable for low-pressure, medium-pressure, and high-pressure industrial applications.
The transmitter has a compact and strong field structure. It is suitable for industrial sites where vibration, mechanical stress, and harsh installation environments may be present.
The transmitter housing provides local zero and span adjustment functions, making field calibration and commissioning easier.
The housing is designed with local configuration buttons for zero adjustment, span adjustment, and LCD display parameter setting. This allows operators to perform basic field configuration without opening the housing in many situations, depending on the actual model structure.
The local LCD display can show multiple field parameters, including:
This helps operators check transmitter status directly in the field.
The damping time can be adjusted according to process conditions. This helps stabilize the output signal when pressure fluctuates.
The transmitter uses solid plug-in printed circuit boards and a modular structure. This design supports easier troubleshooting, reduces spare parts inventory, and improves maintenance convenience.
Independent electromagnetic interference protection circuits and software anti-interference design help improve reliability in industrial environments with motors, inverters, electrical noise, and long signal cables.
The transmitter includes an internal temperature sensor that helps improve compensation for ambient and process temperature influence. It can also provide temperature information related to the sensor body and contacted medium.
The wetted parts are made from 316L stainless steel, suitable for many common liquids, gases, and steam applications. For corrosive media, material compatibility should be confirmed before selection.
| Item | Specification |
|---|---|
| Product Name | 3151GP Pressure Transmitter |
| Product Type | Smart Gauge Pressure Transmitter |
| Measured Media | Liquid, Gas, Steam |
| Main Measurement Type | Gauge Pressure |
| Gauge Pressure Range | 0–0.15 kPa to 42 MPa |
| Series DP Range Option | 0–0.05 kPa to 7 MPa |
| Series Absolute Pressure Range Option | 0–40 kPa to 7 MPa |
| Output Signal | 4–20 mA DC + HART |
| Optional Digital Output | EPA, FF, PROFIBUS PA |
| 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 |
| Structure | Sensor Module + Electronic Circuit Module |
| Typical Applications | Gauge Pressure Measurement, Process Pressure Monitoring, Industrial Automation |
The 3151GP gauge pressure transmitter is mainly used for pressure measurement relative to atmospheric pressure. The typical measuring range is:
| Measurement Type | Range |
|---|---|
| Gauge Pressure | 0–0.15 kPa to 42 MPa |
This range makes the 3151GP suitable for applications such as:
Although the 3151 series platform may include differential pressure and absolute pressure versions, the 3151GP should be mainly positioned as a gauge pressure transmitter page.
The 3151GP pressure transmitter is designed for convenient field operation. The local display and configuration functions allow users to check important operating data and perform basic adjustments at the instrument.
| Display / Setting Item | Function |
|---|---|
| Measured Pressure | Shows real-time process pressure |
| Output Current | Shows 4–20 mA analog output value |
| Percentage Range | Shows pressure as percentage of configured range |
| Sensor / Medium Temperature | Shows temperature information near the sensor |
| Zero Adjustment | Used for local zero point correction |
| Span Adjustment | Used for measuring range setting |
| Damping Setting | Used to smooth output under fluctuating pressure |
| Unit Setting | Used to select engineering unit according to project requirement |
This is useful during commissioning, loop checking, site inspection, and maintenance.
The 3151GP pressure transmitter consists of a sensor module and an electronic circuit module.
The sensor section includes:
The electronic circuit section includes:
During operation, process pressure acts on the sensor. The sensor signal is processed by the microprocessor, compensated with stored characterization data and temperature information, and then converted into a 4–20 mA DC output signal with digital communication capability.
In simple terms:
Process Pressure → Sensor Module → Digital Processing → 4–20 mA DC / HART Output
The 3151GP can be used for pressure measurement in process pipelines, reactors, pumps, storage tanks, separators, distillation systems, and chemical equipment. For corrosive liquids or gases, wetted material selection should be checked carefully.
Suitable for boiler auxiliary systems, steam lines, feedwater pressure, condensate systems, cooling water systems, and plant utility pressure monitoring. For high-temperature steam, a syphon, cooling element, or diaphragm seal may be required.
Applied in gas pipelines, oil transfer systems, compressor stations, fuel gas systems, pressure control skids, and auxiliary process lines.
Used in water supply, pumping stations, filtration systems, desalination equipment, wastewater treatment, and industrial water pressure monitoring.
Suitable for hydraulic equipment, pneumatic systems, compressed air networks, and industrial pressure control loops.
The 3151GP is suitable for PLC/DCS systems requiring continuous 4–20 mA HART pressure signals for monitoring and control.
When selecting a 3151GP pressure transmitter, confirm the following details:
Depending on the site conditions, the 3151GP pressure transmitter may be used with:
For steam service, strong vibration, corrosive media, high temperature, or hazardous areas, accessory selection should be confirmed together with transmitter model selection.
SIYelectric supplies 3151GP 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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