Badger Meter M7600 Specifications

M-Series® M7600

Electromagnetic Flow Meters

DESCRIPTION

The Badger Meter® M7600 flow meter combines the most
advanced electromagnetic flow metering technology with a
simple, yet robust, output for batching systems found in
industrial applications.

Based on Faraday’s Law of electromagnetic induction, M7600
meters can accurately measure and control most batching needs in
the industrial market. Its completely open cross-section flow tube
design with no moving parts, makes it the ideal metering device for
batching of a wide range of industrial conductive fluids.

While other metering technologies are hindered by the presence
of suspended solids in the process fluid, the M7600 will continue to
measure flow, provided the conductivity remains higher than
5 micromhos/cm. Having a non-obstructive flow-through pipe
design allows particulates to pass through the meter body. The
signal voltage, measured by the electrodes, passes through the
entire cross sectional profile for improved accuracy.

The M7600 meter features an intuitive PC interface used for
selecting the scale factor, unit of measure and pules per unit,
making these meters the most straight-forward metering systems
available in the Industry.

OPERATION

The M7600 meters have stainless steel flow tubes with internal
isolating linings. Two electromagnetic coils are located outside the
flow tube, diametrically opposed to each other and protected by a
carbon steel housing. Two electrodes, inserted into the flow tube,
are positioned flush with the internal diameter of the tube and
perpendicular to the coils. The coils are energized by a pulsed DC
voltage provided by the electronic converter, and a magnetic field
is generated across the flow tube section. According to Faraday’s
law, when this magnetic field is cut by the conductive liquid
flowing through the meter, a voltage is generated in the liquid.
This voltage is directly proportional to the liquid flow velocity,
and therefore to the actual volumetric flow rate of the liquid. The
electronic converter measures this voltage, processes the signal,
and provides two digital pulse outputs, scalable to the desired
volumetric value. These digital pulse outputs can be connected to a
batch controller, a totalizer display unit for monitoring purposes, or
to both devices simultaneously.

The operation of the M7600 meter is not affected by a moderate
presence of most suspended solids in the liquid. Variations of liquid
temperature, viscosity or density have no influence in the principle
of operation.

APPLICATION

Because of its inherent advantages over other more conventional
technologies, the M7600 meter can be used in the majority of
industrial process batching applications and is the meter of choice
for concrete batching operations. Whether the fluid is water or
something very viscous, contains a moderate amount of solids
or requires special handling, the M7600 meter will be able to
accurately provide flow measurement.

FEATURES

• Sizes: 1/2…4 in.

• Standard accuracy ±0.5% of rate

• ±0.1% repeatability

• Open cross-section design: no pressure loss, no moving parts,
no maintenance required

• Unaffected by the presence of most suspended solids in
the liquid

• Pulsed DC magnetic field for maximum zero point stability

• Two standard pulse outputs: solid-state relay and open
collector output, compatible with most batch controllers and
totalizer displays

• Programmable scale factor

• Long life, corrosion-resistant liner (PTFE)

• NEMA 4 standard enclosure

• Complies with NIST Handbook HB44 for batching meters

MAG-DS-00508-EN-03 (December 2017)

Product Data Sheet

M-Series® M7600 Electromagnetic Flow Meters

SPECIFICATIONS

Performance

Sizes Sizes 1/2…4 in. (15…100 mm)
Flow Range 0.14…1320 gpm (0.53…5000 lpm)

±0.5% of rate for velocities greater than 1.64 ft/s, ±0.008 ft/s less than 1.64 ft/s

Accuracy

Repeatability ±0.1%
Fluid Temperature Maximum fluid temperature: 212° F (100° C)
Storage Temperature –40…140° F (–40…60° C)
Ambient Temperature –4…140° F (–20…60° C)
Fluid Conductivity Minimum liquid conductivity: 5 micromhos/cm
Flow Direction Unidirectional
Pressure Limits Working pressure: 232 psi (16 bar)

Materials of Construction

Flow Tube AISI 316 stainless steel
Detector Housing Flange material: carbon steel, enamel paint finishing
Liner Material PTFE
End Connection ANSI 150# carbon steel flanges
Electrodes Materials Hastelloy C22

Amplifier Housing

Cable Entries Two 1/2 in. NPT cord grip
Grounding Rings Standard (pre-installed)
Optional Grounding Electrodes 2

Inputs

Power Supply 92…275 VAC
Coil Excitation Pulsed DC
Programming PC user interface

Outputs

Digital Output

Frequency Output Maximum output frequency: 10 kHz
Pulse Width 50% duty cycle

Approvals

Meter Enclosure NEMA 4
NIST Handbook B44 Complies for batching applications

±0.5% of rate for velocities greater than 0.50 m/s, ±2.5 mm/s less than 0.50 m/s
Note: The maximum measuring error depends on the installation conditions.

Powder-coated cast aluminum, NEMA 4
Meter mounted only

Output 1: solid-state relay up to 230V, 500 mA
Output 2: Opto-isolated open collector, 50 mA at 24V DC

Page 2 December 2017MAG-DS-00508-EN-03