Original and Brand-New Emerson Rosemount 8705 Electromagnetic Flowmeter with Hart Protocol

• Customization: Available
• After-sales Service: 24 Hours Online
• Warranty: 1 Year
• Model NO.: 8705
• Accuracy: ±0.5% of Rate
• Main Application: Water
• Size: DN100-500
• Sensor: Tube/Flange
• Application: Industrial Production
• Type: Fluid Oscillation Flow Meter
• Measuring Media: Liquid
• Measuring Principle: Electrical Principles
• Measurement Object: Open Channel
• Certification: DIN
• Product Name: Emerson Rosemount 8705 Flanged Magnetic Flowmeter
• Model: Rosemount 8705
• Size Range: 2.5 mm to 2, 400 mm (0.1" to 96")
• Lining Material: Rubber, Polyurethane, PTFE, PFA, Ceramic (Optional
• Electrode Material: Stainless Steel 316, Hastelloy C, Tantalum, Titani
• Flow Range: 0.03 M/S to 10 M/S
• Operating Temperature: -40°c to +180°c (-40°f to +356°f)
• Pressure Rating: up to 16 Bar (232 Psi)
• Process Connection: Flanged (ANSI, DIN, JIS, as Standards)
• Output Signal: 4–20 Ma Hart, Foundation Fieldbus
• Power Supply: 85–265 V AC or 11–42 V DC
• Certifications: CE, FM (Intrinsically Safe), CSA, ATEX
• Mounting Orientation: Bidirectional Flow Measurement
• Response Time: Adjustable (0.2–100 Seconds)
• Transport Package: Support Air/Land/Sea Transportation
• Specification: 40cm*30cm*30cm*
• Trademark: Emerson
• Origin: China
• HS Code: 8477900000
• Production Capacity: 1000
• Package Size: 40.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 8.000kg

Product Description

Product Description

Comprehensive Product Introduction: Rosemount 8705 Flanged Magnetic Flow Meter Sensors
1. Overview and Product Positioning
The Rosemount 8705 Flanged Magnetic Flow Meter Sensor, manufactured by Emerson Automation Solutions, is a high-performance instrument designed for precise volumetric flow measurement in demanding industrial applications. As part of the Rosemount 8700 series, it leverages Faraday's Law of Electromagnetic Induction to deliver exceptional accuracy (up to ±0.15% of flow rate) and reliability in corrosive, abrasive, or high-purity fluid processes across industries like chemical processing, water/wastewater, pharmaceuticals, and power generation  Its hermetically sealed, all-welded construction ensures long-term integrity in harsh environments, making it a benchmark for electromagnetic flow technology .

Detailed Photos

2. Design and Structural Features

2.1 Hermetic Sealing and Durability
All-Welded Construction: Provides a hermetic seal to prevent moisture ingress and contamination, critical for aggressive media (e.g., acids, slurries) 
Robust Materials:
Liner Options: PEX, PTFE, ETFE, PFA+, polyurethane, Neoprene for chemical compatibility .
Electrodes: Platinum/Iridium, Tantalum, Titanium, Nickel Alloy C-276, or Tungsten Carbide for corrosion/erosion resistance .
Removable Terminal Block: Enables field repairs without full sensor replacement, reducing downtime .
2.2 Sensor and Transmitter Integration
Compatibility: Pairs with Rosemount 8732E transmitters (featuring 4th-generation electronics) for signal processing, supporting HART, 4-20 mA, and frequency/pulse outputs 
Coil Drive Technology: Generates a stable magnetic field for consistent signal strength across varying flow conditions 

Product Parameters

Parameter	Specification
Accuracy	±0.15% of volumetric flow rate (over 13:1 flow turndown); ±0.25% (over 40:1 flow turndown)
Line Size	½-36 inches (15-900 mm)
Liner Materials	PTFE , ETFE (Tefzel™), PFA+, Polyurethane, Neoprene,  Natural Rubber, PEX; additional options consult factory
Electrode Materials	316L Stainless Steel, Nickel Alloy (C-276), Platinum/Iridium, Tantalum, Titanium, Tungsten Carbide
Flange Ratings	ASME B16.5 Class 150-2500; DIN PN 10-40; AS 2129 Table D/E; AWWA C207 Table 3 Class D (30-36 inch only)
Submergence Protection	IP68 (requires sealed cable glands for full compliance)
Interchangeability	Compatible with all 8700 Series transmitters (e.g., 8732E); Legacy transmitter support: 8712D, 8712C, 8732C, 8742C
Operating Temperature	Up to 350°F (180°C)
Operating Pressure	Up to 6,170 psig (425 bar)
Design Features	- All-welded hermetic sensor housing (moisture/contaminant-proof)- Removable terminal block for field repairs- Obstructionless design (no moving parts)- Optional secondary containment for electrode leak detection

4. Installation, Operation, and Maintenance

4.1 Installation Best Practices
Orientation: Vertical (upward flow) or horizontal (electrodes at ±45° from horizontal to avoid air trapping) 
Piping Requirements:
Upstream/Downstream: Minimum 5x pipe diameter upstream and 2x downstream for flow profile stability .
Gasket and Bolt Standards: Use non-conductive gaskets and grade-316 stainless-steel bolts to prevent signal interference .
4.2 Diagnostics and Calibration
Self-Diagnostics: Monitors electrode integrity, coil continuity, and process conditions (e.g., empty pipe detection) .
Zero-Calibration: Automated via 8732E transmitter; manual verification recommended annually .
4.3 Maintenance Advantages
No Moving Parts: Eliminates mechanical wear 
Liner Protection: Optional "liner guard" shields against installation damage 
Safety Compliance: Hazardous area certifications (ATEX, IECEx, FM) for explosive environments .
5. Industry Applications
Water/Wastewater: Sludge flow measurement (abrasion-resistant liners) and chemical dosing 
Chemical Processing: Sulfuric acid transfer (Tantalum electrodes) and solvent blending .
Pharmaceuticals: High-purity water (PFA+ liner) with sanitary compliance .
Mining: Ore slurry lines (tungsten carbide electrodes) .
6. Competitive Advantages
Reliability: Hermetic sealing extends service life in humid/dirty environments .
Cost Efficiency: Reduced maintenance and 40:1 turndown lower total ownership costs .
Flexibility: Wide material options adapt to diverse fluids .
Smart Integration: HART 7 compatibility enables remote monitoring via asset management platforms .
7. Conclusion
The Rosemount 8705 sets the industry standard for electromagnetic flow sensors, combining precision engineering with ruggedness for critical applications. Its modular design, extensive material selection, and integration with advanced transmitters (e.g., 8732E) offer unmatched versatility. For comprehensive technical documentation, including installation manuals and datasheets, refer to Emerson's official resources .

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.
 

Packaging & Shipping

The packaging and transportation of instrumentation in global trade hinges on a synergy of advanced materials, rigorous testing, regulatory compliance, and smart logistics. By adopting hybrid structural designs, leveraging real-time monitoring technologies, and prioritizing sustainability, exporters can ensure the safe, efficient, and cost-effective delivery of precision instruments. Continuous innovation in materials science and IoT integration will further redefine industry standards, enhancing resilience in an increasingly interconnected market.

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: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
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.