Signal Conditioner Intelligent Frequency Converter SGN-UM-00283-EN-01 (November 2013) User Manual
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User Manual CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 CONNECTION . . . . . . . .
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User Manual INTRODUCTION The Intelligent Frequency Converter is a state-of-the-art digital signal processing device designed to provide exceptional accuracy at a very affordable price. Designed for use with B220-954 turbine meters, the sensor measures and calculates the flow rate to produce an analog current or voltage output representative of the meter’s flow rate.
Signal Conditioner, Intelligent Frequency Converter CONNECTION The 4…20 mA output can drive auxiliary devices (resistive loads) such as displays, recorders and computers, provided that the voltage supplied by the power supply is adequate. Devices must be wired in series with the F to I converter and power supply. The voltage drop across the load(s) and the 6V DC minimum needed to drive the F to I converter determine the minimum voltage required from the power supply.
User Manual Loop Resistance Loop Load (Ohm's) 1400 1200 1000 800 600 Operate in the Shaded Region 400 200 10 12 14 16 18 20 22 24 26 28 30 Supply Voltage (VDC) p Figure 3: Loop resistance chart Power Supply Calculations Example 1 F to I Converter 4…20 mA 24V DC Power Supply 150 100 50 Ohms Ohms Ohms Figure 4: Power supply calculation example 1 Known values are: Total Load Resistance = 300 Ω Power Supply = 24V DC At 20 mA loop current, the voltage drop across the load(s) is:
Signal Conditioner, Intelligent Frequency Converter F to I Converter 4…20 mA 24V DC Power Supply 1000 Ohms Figure 5: Power supply calculation example 2 Known values are: Total Load Resistance = 1000 Ω Power Supply = 24V DC At 20 mA loop current, the voltage drop across the load(s) is: 1000 Ω x 20 mA = 20,000 mV (20 Volts) Subtract 20 volts from the 24 volt source to determine that 4 volts is available to power the F to I converter.
User Manual CALIBRATION NNOTE: If your Intelligent Frequency Converter was purchased with a B220-954 turbine meter, the two components ship from the factory calibrated as a set. If the Intelligent Frequency Converter is a replacement, the turbine’s K factor has changed, or the converter is being used with some other pulse-generating device, programming will be necessary.
Signal Conditioner, Intelligent Frequency Converter MAINTENANCE 1. Frequent inspection should be made. A schedule for maintenance checks should be determined by the environment and frequency of use. It is recommended that it should be inspected at least once a year. 2. Perform visual, electrical and mechanical checks on all components on a regular basis. a.
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B220-954 is a registered trademark of Badger Meter, Inc. Other trademarks appearing in this document are the property of their respective entities. Due to continuous research, product improvements and enhancements, Badger Meter reserves the right to change product or system specifications without notice, except to the extent an outstanding contractual obligation exists. © 2013 Badger Meter, Inc. All rights reserved. www.badgermeter.
