Product Description
Product Overview: Rosemount 751 Field Signal Indicator By Emerson Automation Solutions
1. Introduction
The Rosemount 751 Field Signal Indicator is a robust, versatile device designed for industrial environments to display critical process variables such as pressure, flow, level, or temperature. Compatible with any 2-wire transmitter, it addresses installations where built-in displays are difficult to view, offering enhanced readability and durability in harsh conditions. Ideal for oil and gas, chemical processing, and water treatment industries, the 751 combines reliability with configurability to meet global safety standards
Detailed Photos
2. Key Features
2.1 High-Visibility Display Options
LCD Display: A 2-inch diameter LCD screen with customizable engineering units, decimal point placement, and response modes (linear, square root, or filtered). Supports real-time mA input visualization with a 20-segment bar graph
Analog Meter: Optional analog gauge for applications preferring traditional needle-based displays. Both LCD and analog meters are interchangeable within the same housing
2.2 Rugged Design
Environmental Resilience: IP54-rated enclosure resistant to vibration, corrosion, and extreme temperatures (-20°C to 55°C / -4°F to 122°F)
Rotatable Housing: Allows 90° incremental rotations for optimal viewing angles in constrained spaces
2.3 Flexible Configuration
Input Compatibility: Accepts 4-20 mA DC, 10-50 mA DC, or 40-200 mV DC signals. Supports linear, square root, and filtered responses (5-second damping) for dynamic process monitoring
Interchangeable Modules: LCD and analog meters can be removed without interrupting the 4-20 mA loop in parallel configurations
2.4 Safety Certifications
Hazardous Area Compliance: Certified for explosion-proof (ATEX, IECEx) and intrinsic safety (I.S.) installations. Complies with global standards for use in Class I, Division 1/Zone 1 environments
Product Parameters
| Input Signal |
4-20 mA DC, 10-50 mA DC, 40-200 mV DC |
| Display Resolution |
0.1% of span (LCD); 20-segment bar graph |
| Response Time |
≤2 update cycles (≤9 cycles with 5-second filter activated) |
| Power Supply |
Loop-powered; 12-42 V DC |
| Enclosure Material |
Cast aluminum with epoxy coating |
| Weight |
2.9 lbs (1.33 kg) |
| Process Connections |
½-inch NPT conduit; optional ¾-to-½-inch reducer bushings |
For full specifications, refer to the product datasheet .
4. Installation & Wiring
4.1 Mounting Options
Pipe Mounting: U-bolt kits for 2-inch piping installations.
Surface Mounting: Brackets for flat surfaces or vertical panels
4.2 Wiring Configurations
Series Wiring: Recommended for transmitters without test terminals (e.g., Rosemount 2051, 3144P). Removing the indicator interrupts the loop
Parallel Wiring: Suitable for transmitters with test terminals (e.g., Rosemount 3051C/S). Enables hot-swapping without disrupting the 4-20 mA signal
Wiring diagrams for common transmitters (2051, 3051, 3144P) are illustrated in the Quick Installation Guide
4.3 Grounding Requirements
Ensure proper grounding of the enclosure in hazardous areas to prevent electrostatic discharge
5. Configuration & Operation
5.1 LCD Setup
Access Configuration Mode: Simultaneously press left/right buttons to enter setup.
Adjust Decimal Point: Use the left button to cycle through positions.
Select Display Mode:
Linear (Lin): Direct mA-to-display mapping.
Square Root (Srt): Proportional to √(input), with transition at 25% of full scale.
Filtered Mode (LinF/SrtF): Applies 5-second damping to stabilize noisy signals
5.2 Advanced Diagnostics
Compatibility with HART® Communicators: Integrates with AMS Trex™ or HART 475/375 handheld devices for real-time diagnostics, loop testing, and firmware updates
6. Certifications & Compliance
Global Certifications: ATEX, IECEx, CSA, FM, and CE Mark.
Environmental Standards: RoHS-compliant; resistant to UV exposure and chemical corrosion
7. Model Variants
The 751 offers modular customization with suffix codes:
Example: 751AM7E/7BY0035
A: 4-20 mA input
M7: Custom LCD range/units
E: IECEx certification
7BY0035: Mounting kit for 2-inch pipes
8. Applications
Flow Monitoring: Pair with Rosemount 3051S pressure transmitters for differential flow measurement.
Tank Level Indication: Integrate with guided wave radar level transmitters in hazardous zones.
Remote Process Validation: Use as a backup display for control room redundancy
9. Safety Precautions
Explosion Hazard: Never remove the cover in explosive atmospheres while powered.
Electrical Safety: Avoid contact with terminals; high voltage may be present
10. Support & Documentation
Quick Installation Guide: Includes wiring diagrams and component breakdowns
Reference Manual: Detailed instructions for advanced configuration, maintenance, and troubleshooting (available on Emerson's support portal)
Packaging & Shipping
Packaging: Original cardboard box packaging
Company Profile
KERUI (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
We can offer rosemount, Endress+Hauser, ABBB, yokogawa, Siemens, Fisher,Koso, Samson, Abzil, Neles,UE etc, Brands.
If you need anything please feel free to contact me.
FAQ
Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information
Q: What is the delivery time?
A:The products in stock will be shipped after receiving the payment, and the products that need to be ordered are subject to the factory time.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing.
Q: How about the payment terms?
A:You can choose T/T.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I 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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