Cooper-instruments-systems DCM 460 Voltage Bridge Amplifier Instrukcja Użytkownika Pobierz pdf

CF 28 1 4/2001

DCM 460 VOLTAGE BRIDGE AMPLIFIER

Description

The DCM 460 Bridgesensor is a self-contained, AC powered, signal conditioning module for bridge type

instrumentation. It contains a precision differential instrumentation amplifier with filtered output and a highly

regulated, low noise, adjustable output bridge excitation source. The unit is completely encapsulated for use in

rugged environments. The output filter cutoff frequency is 2000Hz and may be lowered by adding two external

capacitors.

Features

• 2 kHz Frequency Response

• Rugged, Compact And Fully Encapsulated

• Complete System-just Add AC Power

• Ready To Use With Screwdriver Wiring

• Stable and Accurate

Applications

• Weighing With Load Cells

• Long Term Structural Monitoring

• Process Control Pressure Transducers

• Temperature Controls Using Thermocouples

• Strain Measurements

Figure 1. Simplified Block Diagram

1 2 3 4 5 6

CF 28 1 4/2001 DCM 460 VOLTAGE BRIDGE AMPLIFIER Description The DCM 460 Bridgesensor is a self-contained, AC powered, signal conditioning modul

CF 28 2 4/2001 Specifications (Typical @ 25°C unless noted) Amplifier Gain Range 40-250 Gain Temperature Coefficient 200 ppm/°C Drift (RTI) 3 µV

CF 28 3 4/2001 C. Turn on the AC source supply to the DCM 460. D. Set the required EXCITATION supply voltage to the load cell by adjusting B+ ADJUST

CF 28 4 4/2001 The sense lines minimize variations in output voltage with changes in load current or lead resistance. It should be noted that if th

CF 28 5 4/2001 Filter Roll Off Frequency The table in Figure 4 shows the values for C1 and C2 to set the 3 dB filter frequency. A printed circuit bo

CF 28 6 4/2001 Figure 5. Case Dimension Terminal Strip Assignments Screw Terminal Function Screw Terminal Function 1 SENSE 8 +INPUT 2 B- 9

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Cooper-instruments-systems DCM 460 Voltage Bridge Amplifier Instrukcja Użytkownika