Rosemount 8705 Flanged Flowtube Sensor Flanged flowtube sensors for conductive liquids and slurries

Quick Detail:

1. Manufactured by Rosemount
2. Flanged style
3. 0.25% standard accuracy; 0.15% high accuracy option available
4. ½ to 36 inch size available
5. Pulsed DC coil drive power
6. Standard process design

Description:

The Rosemount 8705 flanged sensors are fabricated from stainless and carbon steel and welded to provide a hermetic seal that protects against moisture and other contaminants. The sealed housing ensures maximum sensor reliability by protecting all internal components and wiring from the most hostile environments. All Rosemount magmeter systems use pulsed DC technology that provides continuous automatic zeroing to compensate for variations in the process environment; especially with following characters:

1. All-welded sensor housing ensures reliability in the harshest environments
2. Wide range of sizes, lining materials and electrode materials to meet all of your magnetic flowmeter needs, Applicable to pipe diameter from 15 mm to 900mm.
3. ISO lay lengths.
4. Sensor installation requirement: 5D from upstream and 2D downstream pipe straight.
5. Accuracy: 0.25% for Standard and 0.15% for High Accuracy Option.
6. Service: Conductive liquids and slurries.
7. Transmitter selection: interchangeable with 8732E and 8712E.
8. Upper range limit: 12m/s.
9. Temperature limit: -34 to 65 °C for ambient and max. process range is -29 to 177 °C with PTFE and PFA lining.
10. Physical specification:

• Non-wetted material: 304SST or 316SST for sensor and flanges, fully welded material for housing and polyurethane paint.
• Wetted material: PFA, PTFE, ETFE, polyurethane, neoprene, Linatex lining and 316L SST, Nickel Alloy 276 (UNS N10276), tantalum, 80% platinum-20% iridium, titanium for electrodes.
• Electrical connection:Two 1/2–14 NPT connections with number 8 screw terminals are provided in the terminal enclosure for electrical wiring.

Applications:

Specifications:

Step 1: Flow Sensor Type   Type Application Notes Accuracy Option Line Sizes Coil Drive Power 8705 Standard process design 0.25% Standard 0.15% High 15 - 900 mm 0.5 - 36 inch Pulsed DC 8711 Compact light-weight 0.25% Standard 0.15% High 4 - 200 mm 0.15 - 8 inch Pulsed DC 8721 Designed for food & beverage and life science, 3-A and EHEDG 0.5% Standard 0.25% High 15-100 mm 0.5 - 4 inch Pulsed DC 8707 Best in P&P, M&M slurry flows, and noisy applications 0.5% Standard 0.25% High 80 - 900 mm 3 - 36 inch High-Signal Pulsed DC   Step 2: Liner Material Selection   Liner Notes Temp Limits Type and Line Sizes PFA BEST FLUOROPOLYMER Excellent resistance to chemicals and abrasion. Suitable for any application. -20 to 350°F (-29 to 177°C Flange 15 - 350 mm 0.5 - 14 inch Wafer 4 - 8 mm 0.15 - 0.3 inch PTFE BETTER FLUOROPOLYMER More cost effective than PFA. Excellent chemical resistance, but less abrasion resistance than PFA. -20 to 350°F (-29 to 177°C Flanged 15 - 900 mm 0.5 - 36 inch Wafer 15 - 200 mm 0.5 - 8 inch ETFE GOOD FLUOROPOLYMER Similar chemical and abrasion resistance to PTFE, but a lower maxium temperature an more expensive. -20 to 300°F (-29 to 149°C) Flanged 15 - 400 mm 0.5 - 16 inch Wafer 15 - 200 mm 0.5 - 8 inch Polyurethane Typically applied to clean water (no chemicals). Abrasion resistant to slurries with small particles. 0 to 140°F (-18 to 60°C) Flanged 15 - 900 mm 0.5 - 36 inch Neoprene Typically applied to water and sea water. Abrasion resistant to slurries with small particles. 0 to 185°F (-18 to 85°C) Flanged 80 - 1800 mm* 1.5 - 72 inch Step 3: Electrode Type and Material Selection   Electrode Type Application Notes   Button Standard electrode design. Use for most applications, especially where abrasion is a concern. Has fair resistance to coating which can be improved by properly sizing sensor.   Bullet-nose Use where coating is a concern and no solids are present. Bullet-nose electrode should not be used in abrasive or slurry applications as the particles will result in increased process noise on the electrodes.   Electrode Material Application Notes 316L SST Standard electrode material. Compatible with most low concentration water based applications. Avoid using stainless in higher concentration acid applications. Nickel Alloy 276 Use in medium to high concentration acids where SST is not acceptable. Use in applications with high chloride concentrations, such as sea water. Platinum (80% Platinum, 20% Iridium) Ideal for liquor applications found in pulp and paper industry. Also ideal as a spare electrode option to cover nearly every application in a plant. Compatible with nearly every process fluid. Tantalum Ideal for high concentration acid flows such as hydrochloric and hydrofluoric acids. Titanium Ideal for high concentration caustic (base) applications such as sodium and potassium hydroxides. Step 4: Transmitter Selection   Type Notes Accuracy Option Power Supply User Interface Output Protocol LOI 8732 Integral or remote mounting 0.25% Std 0.15% High Global AC/DC HART®, Foundation™ fieldbus optical switch LOI or display only 8712 Remote wall 0.25% Std 0.15% High Global AC/DC HART Dedicated button LOI 8712 High Signal Remote wall. Compatible only with 8707 flowtube 0.5% Std 0.25% 115V AC HART Dedicated button LOI Step 5: Diagnostics and Enhanced Features   Type Notes Availability Standard Diagnostics Transmitter hardware fault; transmitter software fault; sensor coil fault; empty pipe With every E-Series transmitter   D1 High accuracy option (0.15%) 8732 and 8712   AX Enhanced DI ⁄ DO capability 8732 and 8712     HART ⁄ FF       DA1 ⁄ D01 Diagnostics suite includes: ground and wiring fault detection, high process noise detection. 8732 and 8712   DA2 ⁄ D02 Diagnostic suite includes: 8714i internal meter verification 8732 and 8712

Competitive Advantage:

The 8700 Magnetic Flowmeter Systems provide obstructionless flow measurement that is ideal for metering any conductive fluid. A wide choice of construction materials provides compatibility with virtually all applications, from highly corrosive liquids to fibrous slurries often considered difficult to measure with other devices. Rosemount Magnetic Flowmeters offer the benefit of measuring flow in a package virtually unaffected by density, temperature, pressure, and viscosity change.