Signal Conditioner
B220-885 K-Factor Scaler and
B220-900 Programming Software Kit
SGN-UM-00282-EN-03 (July 2015)
User Manual
CONTENTS
Scope of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Terminology and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Enclosure Mounting (Necessary for CSA Certication) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Turbine Meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pulse Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Internal Pullup Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
External Pullup Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Using the Programming Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting the Output to Use the Internal or External Pullup Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
K-Factors Explained . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Calculating K-Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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Scope of This Manual
SCOPE OF THIS MANUAL
This manual is intended to help you get the B220-885 K-factor scaler and the B220-900 Programming Software up and
running quickly.
MPORTANTI
Read this manual carefully before attempting any installation or operation. Keep the manual accessible for future reference.
UNPACKING AND INSPECTION
Upon opening the shipping container, 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.
OTE:N If damage is found, 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.
SAFETY
Terminology and Symbols
Indicates a hazardous situation, which, if not avoided, is estimated to be capable of causing death or
serious personal injury.
Indicates a hazardous situation, which, if not avoided, could result in severe personal injury or death.
Indicates a hazardous situation, which, if not avoided, is estimated to be capable of causing minor or
moderate personal injury or damage to property.
Considerations
The installation of the B220-885 K-factor scaler and the B220-900 Programming Software must comply with all applicable
federal, state, and local rules, regulations, and codes.
CAUTION
IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER, THE PROTECTION PROVIDED BY
THE EQUIPMENT MAY BE IMPAIRED.
AVERTISSMENT
DANS LE CAS D'UNE UTILISATION NON PRÉVUE PAR LE FABRICANT, LA PROTECTION FOURNIE PAR L'ÉQUIPEMENT PEUT
ÊTRE RÉDUITE.
CAUTION
FOR FIELD WIRING CONNECTIONS, WIRE MUST BE RATED AT 158° F (70° C) OR HIGHER.
AVERTISSMENT
POUR DES CÂBLAGES SUR LE TERRAIN, LES CÂBLES DOIVENT ÊTRE ÉVALUÉS À 70° C (158° F) MINIMUM.
MPORTANTI
Not following instructions properly may impair safety of equipment and/or personnel.
MPORTANTI
Must be operated by a class 2 power supply suitable for the location.
Electrical Symbols
Function Direct Current Caution
Symbol
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Turbine Rotor
Magnetic Pickup
Signal
Introduction
INTRODUCTION
The K-factor scaler is a field-adjustable frequency divider, which converts the output signal from a turbine meter or a similar
device with a magnetic pickup or pulse output, to an input compatible with a PLC, RTU, CPU data acquisition card or similar
totalizer device. The adjustable frequency divider, referred to as a K-factor, allows pulses sent from a turbine meter to
accumulate into a unit recognizable by an end device, such as a PLC, for counting and display.
The use of different K-factor values allows the device to display in any number of volumetric measurements such as gallons,
cubic meters, liters, barrels and like units. The calibration sheet usually provided with a turbine meter lists a nominal K-factor
tested to a specific volumetric flow rate. The K-factor when placed into the K-factor scaler provides an output pulse for each
unit of volume that passes through the turbine. Any units of volume are possible by recalculating the K-factor with the
appropriate conversion factor.
In addition, if the K-factor is set to one, the K-factor scaler becomes a preamplifier, converting the frequency from a low
output level turbine meter to the logic level needed by a PLC or CPU data acquisition card.
OPERATING PRINCIPLE
Fluid passing through the turbine causes the rotor to spin at a speed proportional to the fluid velocity. As each rotor blade
passes through the magnetic field, the blade generates an AC voltage pulse in the pickup coil at the base of the magnetic
pickup (see Figure 1). These pulses produce an output frequency proportional to the volumetric flow through the meter. The
output frequency with further processing represents flow rate and/or totalization of fluid passing through the flow meter.
The K-factor scaler input amplifier modifies the signal generated by the turbine. The amplifier sends the modified signal to an
onboard microcontroller, which counts pulses up to a predetermined number controlled by the K-factor value. The range of
the K-factor is 1…999,999,999. The predetermined value, once reached, triggers a pulse from the output circuitry.
The K-factor is user adjustable through the programming interface. The duration of the output pulse is also selectable. At the
end of the output pulse, the internal counters reset to zero and the process starts over.
Figure 1: Schematic illustration of electric signal generated by rotor movement
or
Other Frequency
Output Device
Output
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