Up to 0.15% of volumetric flow rate accuracy over 13:1 flow turndowns, 0.25% over 40:1 flow turndown
Line Sizes
0.15-8 inch (4-200mm)
Liner Materials
ETFE, PTFE, and PFA
Electrode Materials
316L Stainless Steel, Nickel Alloy, Platinum, Tantalum, Titanium Consult factory for additional material options
Flange Ratings
ASME B16.5 Class 150-300
DIN PN 10-40
Interchangeability
Compatible with all E-Series transmitters
Compatible with Legacy transmitters
8712D
8712C
8732C
8742C
The flangeless design of the 8711 wafer sensor make it an economical, compact, and lightweight alternative to flanged magnetic flowmeters. Alignment rings provided with every 8711 center the sensor in the process line and make installation easier.
Lightweight, easy-to-install sensor for many common flow applications
Wide range of sizes and electrode materials to meet your needs
Cost-effective design
Benefits
Flangeless construction for minimum size and weight
Available in sizes from 0.15 to 8 inches (4 to 200 mm)
ETFE-lined sensors comes with a choice of electrode materials to suit most process fluids
PTFE-lined sensors are available for applications requiring FDA approved lining material
Applications
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.
Availability
With a wide range of liner and electrode materials available, the Rosemount 8700 Series Magnetic Flowmeter family is suitable for virtually any conductive liquid application. Rosemount Magnetic Flowmeters offer the benefit of measuring flow in a package unaffected by density, temperature, pressure, and viscosity change.
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
Linatex
Typically applied to mining slurries, abrasion resistant to larger debris.
0 to 158°F (-18 to 70°C)
Flanged
80 - 900 mm
1.5 - 36 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
