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Not Recommended for New Installations.
Please contact Technical Support for more information.
Strain Gauge/Load Cell Bridge Amplifier
Model FBDA
Documentation Number FBDA0797
This product
Designed and Manufactured
In Ottawa, Illinois
USA
of domestic and imported parts by
B&B Electronics Mfg. Co. Inc.
707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
Internet:
http://www.bb-elec.com
orders@bb-elec.com
support@bb.elec.com
1997 B&B Electronics
Documentation Number FBDA0797 Manual
Cover Page
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
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Table of Contents
Related Manuals for B&B Electronics Strain Gauge/Load Cell Bridge Amplifier FBDA
Summary of Contents for B&B Electronics Strain Gauge/Load Cell Bridge Amplifier FBDA
- Page 1 Not Recommended for New Installations. Please contact Technical Support for more information. Strain Gauge/Load Cell Bridge Amplifier Model FBDA Documentation Number FBDA0797 This product Designed and Manufactured In Ottawa, Illinois of domestic and imported parts by B&B Electronics Mfg. Co. Inc. 707 Dayton Road -- P.O.
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Page 2: Table Of Contents
TABLE OF CONTENTS CHAPTER 1: INTRODUCTION...1 ...1 EATURES ...2 ACKING ...2 OFTWARE ...2 ALIBRATION FBDA S PECIFICATIONS CHAPTER 2: CONNECTIONS...3 OWER UPPLY ONNECTIONS ENSOR ONNECTIONS CQUISITION CHAPTER 3: GAIN SELECTION...7 CHAPTER 4: EXCITATION VOLTAGE ...9 Documentation Number FBDA0797 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 433-5105 ...2 ...3... -
Page 3: Chapter 1: Introduction
Chapter 1: Introduction Features The FBDA is a signal conditioning module that allows you to measure voltages produced by full-bridge sensors using a data acquisition module. This module can condition signals from Strain Gauges, Load Cells, Pressure Sensors, and other Full-Bridge Transducer Sensors. -
Page 4: Packing List
Packing List Examine the shipping carton and the contents for physical damage. The following items should be in the shipping carton: 1. FBDA module 2. This instruction manual If any of these items are damaged or missing, contact B&B Electronics immediately. Software Software is not included with the FBDA module. -
Page 5: Chapter 2: Connections
Chapter 2: Connections Power Supply Connections The FBDA module requires 13 to 18VDC @ 10mA. Model 232PS2 available from B&B Electronics is recommended. Although the 232PS2 is a 12VDC power supply, it outputs a voltage above 13VDC when less than 10mA are being drawn from it. The power supply is connected to the terminal blocks marked +13V and GND. -
Page 6: Data Acquisition Connections
Data Acquisition Connections The connections to the Data Acquisition Module are made through a DB-25 (male) connector. The FBDA is pin compatible with B&B Electronics’ SDAXX, and ADIO12 modules. This allows you to simply plug the FBDA into one of the above data acquisition modules, and the data acquisition module connections to the FBDA are complete. - Page 7 Sensor Terminal Blocks SIG- SIG+ Module A/D 1 +13V +13V Figure 2.1: Block Diagram of FBDA Connections Documentation Number FBDA0797 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 433-5105 Note: Conditioned signal is available on DB-25 pin #8 and is labeled as Vout.
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Page 8: Chapter 3: Gain Selection
Chapter 3: Gain Selection The FBDA has several different gain settings to provide the largest possible voltage range for an A/D converter. The gain of the FBDA is selected using a jumper, 6 jumper pins (labeled 1-6), and a potentiometer (labeled P1). The FBDA is calibrated at the factory to have a gain of 80 ±... - Page 9 GAIN = Vout / ((SIG+) - (SIG-)) Sensors that incorporate bridge circuitry usually have noticeable zero offsets. This should be considered when taking measurements and determining gain. The easiest way to solve this problem is to calibrate the system while avoiding zero inputs, and correct for the zero offset in software.
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Page 10: Chapter 4: Excitation Voltage
Chapter 4: Excitation Voltage Sensors that are based on a Wheatstone bridge need an excitation voltage to excite the bridge. The FBDA provides an adjustable excitation voltage. This excitation voltage is available on the terminal block labeled EXV. The excitation voltage is set to 5VDC ±...