Badger Meter 7500P Operating Manual
M-Series®
7500P
MAG-UM-00365-EN-05 (October 2014)
User Manual
M-Series®, 7500P
CONTENTS
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Piping Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Partially Full Pipe Situations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting to 110V AC from Batch Control Panel Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Wiring to PC100 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Wiring to ER-8 Totalizer/Rate Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recalibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pre-Selection Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Jumper Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Page 2 October 2014
Scope of Manual
SCOPE OF MANUAL
This manual contains information concerning the installation, operation and maintenance of the M-Series 7500P flow meters.
To ensure proper performance of the meters covered, the instructions given in this manual should be thoroughly understood.
Retain the manual in a readily accessible location for future reference.
OPERATION
The 7500P Mag meter is intended for use in fluid metering applications for process batching in industrial plants or
concrete operations.
The 7500P Mag meter is a stainless steel flow tube with an internal isolating lining. Two electromagnetic coils are located
outside the flow tube, diametrically opposed to each other and protected by a stainless 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 conductive liquid flows through this magnetic field of 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 7500P operation is not
affected by suspended solids in the liquid. Variations of liquid temperature, viscosity or density have no influence in its
principle of operation. A set of convenient, field proven pulse scaler rotary switches are provided for easy and straight-forward
batch accuracy compensation.
Coil
DC supply
Electrode
Figure 1: Meter operation
Liner
Flow
PRODUCT UNPACKING AND INSPECTION
Upon receipt of the product, perform the following unpacking and inspection process:
If the product package is damaged, request the carrier to be present when unpacking the product. If the product is damaged
and the carrier is not present, request an inspection by the carrier’s agent within 48 hours of delivery and file a claim with the
carrier. A claim for equipment damage in transit is the sole responsibility of the purchaser.
Carefully open the shipping package and follow any instructions marked on the exterior. Remove all packing material and
carefully remove the product from the package.
Retain an undamaged package and all packing material for possible use in reshipment or storage.
Visually inspect the product and applicable accessories for any physical damage such as scratches, loose or broken parts, or
any other sign of damage that may have occurred during shipment.
Storage
If the meter is not to be installed right away, store it in the original container in a dry, sheltered location. Storage temperature:
-4…158° F (-20…70° C).
Page 3 October 2014 MAG-UM-00365-EN-05
Meter Installation
METER INSTALLATION
Mag meters can operate accurately in any pipe line orientation. However, the most recommended installation position is
vertical piping, with the liquid flowing upward.
Figure 2: Vertical pipe mounting
This installation practice ensures two objectives:
• The pipe remains completely full of liquid, even at low flow, low pressure applications with a discharge to the atmosphere.
• Solid build-up or sediments that could be part of the process fluid will not deposit or accumulate on the liner
and/or electrodes.
The model 7500P meter is designed to measure flow in one direction only. Carefully observe the "forward flow" label attached
to the meter body and install the meter accordingly.
If horizontal piping orientation is required, the detector should be mounted in a position at which the electrodes axis will
remain in an horizontal plane. See Figure 3.
Figure 3: Horizontal installation
Page 4 October 2014MAG-UM-00365-EN-05
Meter Installation
Piping Conguration
Appropriate piping arrangements should be made to ensure the meter is not exposed to extreme pipe vibrations. The piping
arrangements should include appropriate pipe supports.
For optimum accuracy performance, sufficient inlet and outlet straight pipe runs are required. Three diameters of straight
pipe are required on the inlet side of the meter, and two diameters are required on the outlet side, measured from the center
of the meter body. See Figure 4 for additional requirements.
Avoid installing the detector close to flow disturbance generating valves and fittings.
Do not install the detector in the outlet side of piston or diaphragm type pumps. Avoid all pipe locations where the flow is
pulsating. Avoid installing the detector in the suction side of any pumps; possible creation of a vacuum can affect the meter
performance or cause damage to the PTFE liner.
DOWN STREAM
2 D3 D
ELBOW
TEE
ANY VALVE
ELBOW
TEE
GATE VALVE
(FULLY OPENED)
BALL VALVE
UPSTREAM
PIPE REDUCERS
NO REQUIREMENT
NO PUMPS
GLOBE VALVE
NEEDLE VALVE
CHECK VALVE
PUMP
5-7 D
STRAIGHT PIPE RUN
(ANY POSITION)
Figure 4: Pipe diameters
Temperature
OTE:N Environmental temperature of installation is not to exceed maximum specification of 122° F (50° C) for the meter. See
"Specifications" on page 13 for full temperature specifications.
Page 5 October 2014 MAG-UM-00365-EN-05
Loading...