Related Manuals for Badger Meter Blancett B220-885
Summary of Contents for Badger Meter Blancett B220-885
- Page 1 K-Factor Scaler B220-885 K-Factor Scaler and B220-900 Programming Software Kit User Manual SGN-UM-00282-EN-05 (June 2021)
-
Page 2: Table Of Contents
K-Factor Scaler, B220-885 K-Factor Scaler and B220-900 Programming Software Kit CONTENTS Scope of This Manual Unpacking and Inspection Safety Terminology and Symbols Considerations Electrical Symbols Introduction Operating Principle Installation Electrical Connections Enclosure Mounting (Necessary for CSA Certification) Power Turbine Meter Pulse Output Startup Connecting to a Computer... -
Page 3: Scope Of This Manual
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 IMPORTANT Read this manual carefully before attempting any installation or operation. Keep the manual accessible for future reference. -
Page 4: Electrical Symbols
Introduction MPORTANT Not following instructions properly may impair safety of equipment and/or personnel. MPORTANT Must be operated by a class 2 power supply suitable for the location. Electrical Symbols Function Direct Current Caution Symbol 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,... -
Page 5: Operating Principle
Operating principle 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 ) These pulses produce an output frequency proportional Figure 1... -
Page 6: Installation
Installation INSTALLATION Electrical Connections The programmable K-factor scaler was designed to provide a field adjustable frequency divider that converts the low level frequency output from a turbine meter into a scaled square wave output signal See below for the I/O Figure 2 terminal connections Programming... - Page 7 Installation External Pullup Resistor Using an external pullup resistor offers greater flexibility of controlling the output pulse provided by the K-factor board to the receiving device Since power sources and receiving devices differ between users, different resistor values are required for different setups The external pullup resistor is connected between the receiving device’s input and external power source This power source is the maximum input voltage...
-
Page 8: Startup
Startup STARTUP Connecting to a Computer The programmable K-factor scaler can be factory or user configured through a USB port of a PC using a Windows® compatible software utility A programming adapter is required that interfaces the USB port from the PC to the programming port on the board To connect the K-factor scaler: 1 Verify that the power is off... -
Page 9: Using The Programming Software
Startup Using the Programming Software OTE: The programming software is sold separately The programming interface uses two functional divisions as shown in Figure 6 Program Values column contains the user-selected information for downloading into the K-factor scaler The Board Values column shows the information that the K-factor scaler currently contains and is not alterable by the user The Board Values column will only display the contents of the board after performing a Program, Read or Verify function... - Page 10 Startup Blancett K-Factor Programming Software Blancett K-Factor Programming Software File Tools Version File Options Tools File Tools Version File Options Tools Program Program Program Values Board Values Program Values Board Values Read Read K-Factor K-Factor K-Factor K-Factor Verify Verify Com 1 Com Port Com Port Com 2...
- Page 11 Startup When High is selected, the output level is normally low and the duration of the selected pulse width is high When Low is selected, the output level is normally high and the duration of the selected pulse width is low Programming the K-Factor Scaler OTE: All information in the Program Values column must be entered before the...
-
Page 12: Specifications
Specifications SPECIFICATIONS Input Voltage 8 5…30V DC (diode protected) External Power Maximum Current 18 mA (using internal resistor @ 30V DC input) Draw Operating –22…158° F (–30…70° C) Temperature Altitude 2000 m Environmental Indoor/Outdoor Humidity 0…90% non-condensing Frequency Range 0…4000 Hz Inputs (Magnetic Pickup) Trigger Sensitivity 30 mV p-p…30V p-p... -
Page 13: K-Factors Explained
K-factors explained K-FACTORS EXPLAINED The K-factor (with regards to flow) is the number of pulses that must be accumulated to equal a particular volume of fluid Think of each pulse as representing a small fraction of the totalizing unit An example might be a K-factor of 1000 (pulses per gallon) This means that if you were counting pulses, when the count total reached 1000, you would have accumulated 1 gallon of liquid Using the same reasoning, each individual pulse represents an accumulation of 1/1000 of a gallon This relationship is independent... - Page 14 K-factors explained Example 2 Known values are: Full Scale Flow Rate 85 gpm Full Scale Output Frequency 650 Hz 650 Hz × 60 sec = 39,000 pulses per min 39,000 pulses per min K factor 458.82 pulses per gallon 85 gpm The calculation is a little more complex if velocity is used You first must convert the velocity into a volumetric flow rate to be able to compute a K-factor To convert a velocity into a volumetric flow rate, you need to know the velocity...
- Page 15 K-factors explained Known values are: Frequency 700 Hz (By measurement) Flow Rate 99 1 gpm (By calculation) 700 Hz x 60 sec = 42,000 pulses per gallon 42,000 pulses per min K factor 423.9 pulses per gallon 99.1 gpm June 2021 SGN-UM-00282-EN-05 Page 15...
- Page 16 Control. Manage. Optimize. Blancett 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 ©...
Need help?
Do you have a question about the Blancett B220-885 and is the answer not in the manual?
Questions and answers