| Type: | Differential Pressure Transmitter |
|---|---|
| Structure Type: | Strain Gauge Pressure Transmitter |
| Measuring Medium: | Gas |
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Rosemount 1151 Differential Pressure Transmitter Overview
The Rosemount 1151 Differential Pressure Transmitter is a highly reliable and widely recognized instrument designed for precise measurement of differential pressure, level, and flow in industrial applications. Engineered by Emerson Automation Solutions, this transmitter has established itself as a benchmark for performance, durability, and versatility across industries such as oil and gas, chemical processing, power generation, water treatment, and HVAC systems. Its robust construction, advanced sensing technology, and user-friendly design make it a preferred choice for critical process measurements.
Core Technology and Design
At the heart of the Rosemount 1151 lies a capacitive sensing element, a proven technology that ensures high accuracy and long-term stability. The sensor consists of two isolating diaphragms connected by a fill fluid to a central sensing diaphragm. When differential pressure is applied, the sensing diaphragm deflects, altering the capacitance between the diaphragm and the detector plates. This change is converted into a proportional 4-20 mA analog signal, which can be integrated with control systems for real-time monitoring and process optimization. The transmitter's modular design allows for easy configuration and maintenance, while its compact form factor enables installation in space-constrained environments.
Key Features and Performance
The Rosemount 1151 offers exceptional measurement accuracy, typically within ±0.1% of span, ensuring reliable data for process control. It supports a wide range of differential pressure spans, from as low as 0.125 inH2O (0.03 kPa) to 2000 psi (13.8 MPa), catering to diverse application requirements. The device is capable of withstanding static line pressures up to 3600 psi (248 bar), making it suitable for high-pressure environments. Additionally, it compensates for temperature fluctuations via an integrated temperature sensor, minimizing drift and enhancing measurement consistency.
The transmitter's all-welded, stainless steel sensor chamber and hermetically sealed electronics provide superior resistance to harsh conditions, including extreme temperatures (-40°F to 250°F / -40°C to 121°C), vibration, and corrosive media. Optional coatings and seal materials, such as Hastelloy or Tantalum, extend compatibility with aggressive fluids. The inclusion of HART® communication protocol (in later models) enables remote configuration, diagnostics, and calibration without disrupting the process, reducing downtime and operational costs.
Application Flexibility
The Rosemount 1151 excels in measuring differential pressure across orifice plates, venturi tubes, and flow nozzles for flow rate calculations. It is equally effective in liquid level measurement in tanks or vessels using hydrostatic principles. For level applications, the transmitter can be mounted directly or via capillary tubing for high-temperature or volatile media. Its versatility extends to filter monitoring, pump protection, and leak detection systems, where precise pressure differentials are critical.
| Model | Rosemount 1151 Differential Pressure Transmitter |
| Measurement Type | Differential Pressure |
| Rangeability | 100:1 |
| Output Signal | 4-20 mA DC with HART Protocol |
| Accuracy | ±0.25% of Span |
| Power Supply | 12-45 V DC |
| Process Connection Material | 316 Stainless Steel |
| Stability | ±0.25% of URL per Year |
| Damping Adjustment | 0-32 Seconds (Programmable) |
| Mounting | 2-Inch Pipe Mount or Surface Mount |
| Process Pressure Limits | Up to 5000 psi (344 bar) |
| Wetted Parts Materials | 316L SST, Hastelloy, Tantalum |
| Communication Protocol | HART 5/7, FOUNDATION Fieldbus (Optional) |
Installation and Maintenance
Designed for ease of use, the transmitter features a rotating terminal block and a dual-compartment housing that simplifies wiring and reduces installation time. The LCD local operator interface (LOI), available in select models, provides on-site access to configuration parameters, diagnostics, and calibration tools. The 1151's rugged construction minimizes the need for frequent maintenance, while its modular components allow for quick replacement of parts such as electronics or sensor modules, ensuring extended service life.
Safety and Compliance
The Rosemount 1151 meets stringent global certifications, including ATEX, IECEx, FM, CSA, and SIL 2/3 compliance, ensuring safe operation in hazardous areas. Its flameproof and intrinsically safe designs cater to explosive atmospheres, while corrosion-resistant materials comply with FDA and 3-A sanitary standards for food and pharmaceutical applications.
Legacy and Evolution
As part of the Rosemount 1151 series, this transmitter has evolved over decades, incorporating technological advancements while retaining backward compatibility. Its reputation for reliability has made it a legacy product, with many units operational for over 30 years in demanding conditions. Though newer models like the Rosemount 3051 have since emerged, the 1151 remains a cost-effective solution for industries prioritizing proven performance and lifecycle value.
In summary, the Rosemount 1151 Differential Pressure Transmitter combines precision engineering, ruggedness, and adaptability to deliver unmatched performance in diverse industrial environments. Its enduring design and Emerson's global support network ensure it continues to meet the evolving needs of modern process automation.
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need to be ordered are subject to the factory time.
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A: Do not worry about the package, we have rich experience in packing.
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A:You can choose T/T.
Q: What is the MOQ?
A:1PC.
Q: Can l get a lower price if l order large quantities?
A: Yes, cheaper prices with more bigger size orders.
Q:After sales and warranty?
A: We provide one year warranty lifetime technical support services.
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