1. Product Overview: 

The Rosemount 3051DP is a widely trusted differential pressure transmitter used for measuring pressure drops across elements like orifice plates, venturis, or filters—making it ideal for flow, level, and pressure applications.

Here are some key highlights:

Measurement Range: Up to 2000 psi (137.89 bar) differential

Accuracy: As precise as ±0.04% of reading (with Ultra for Flow performance class)

Rangedown: Up to 200:1, offering excellent flexibility across applications

Output Protocols: 4-20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus

Materials: Wetted parts available in 316L SST, Alloy C-276, Tantalum, and more

Diagnostics: Includes loop integrity checks, plugged impulse line detection, and process intelligence

Certifications: SIL 2/3 certified to IEC 61508, with hazardous location approvals

It can also be pre-assembled with primary elements and leak-tested to reduce installation time and potential leak points by up to 70%.

2.Technical Parameters: 
 

3. Product Features: 
It is the first in the industry to maintain 10 years of stability under actual process conditions. Even in extremely harsh application environments, the Rosemount 3051DP differential pressure transmitter can provide accurate, stable, and reliable pressure measurement results. The main features are as follows: 
1. Pressure range up to 4000 psi. The Rosemount 3051DP differential pressure transmitter is equipped with a fully configurable liquid crystal display (LCD) that can show pressure and diagnostic information. 
2. Compact, lightweight, easy to install and transport. 
3. Communication protocols include 4~20mA HART protocol, FOUNDATION (FF) fieldbus, PROFIBUS PA protocol, and low-power 1~5V DC with HART protocol-based digital signal output. 
4. Fully configurable LCD can display process variables, range percentages, and diagnostic messages. 
5. The super module and single electronic board circuit are housed in a fully welded vacuum-sealed 316L stainless steel body, thus eliminating the effects of humidity and harsh field environments. 
The Rosemount 3051DP differential pressure transmitter uses a super module and a reliable design platform, further enhancing installation levels while possessing advanced self-diagnostic capabilities, mainly applied in measuring liquids, gases, and steam, with exceptionally stable parameters.

 4. Selection Specification Table and Model Analysis:

Typical Model: 3051DP 2 A 2 2 A 1 A HR5 B4

Rosemount 3051DP – Frequently Asked Questions

Q1: What does the 3051DP measure? 

A: It measures differential pressure—the difference between two pressure points—commonly used for flow, level, and filter monitoring.

Q2: What is the accuracy of the 3051DP? 

A: It offers up to ±0.04% of span accuracy with the Ultra for Flow option.

Q3: What output protocols are supported? 

A: It supports 4–20 mA with HART®, WirelessHART®, and FOUNDATION™ Fieldbus.

Q4: Can it be used in hazardous environments? 

A: Yes, it has SIL 2/3 certification and approvals like ATEX, FM, CSA, making it suitable for hazardous areas.

Q5: What is the maximum differential pressure it can handle? 

A: Depending on the model, it can handle up to 2000 psi (137.89 bar).

Q6: What materials are available for wetted parts? 

A: Options include 316L SST, Hastelloy C-276, Monel, and Tantalum, depending on process compatibility.

Q7: How fast is the response time? 

A: As quick as 100 milliseconds, ideal for dynamic process control.

Q8: What diagnostics are built in? 

A: Features include plugged impulse line detection, loop integrity checks, and power advisory diagnostics.

Q9: Is remote mounting possible? 

A: Yes, with capillary systems or impulse tubing, it can be remotely mounted for high-temperature or inaccessible locations.

Q10: Where can I find the official manual? 

A: You can access the Emerson Rosemount 3051 Reference Manual for detailed specs, installation, and safety guidance.