Weighing, Batching & Automation System Specialist

PR490 Load Cell Amplifier


Features



  • Compact fully enclosed DIN rail mounting
  • Microprocessor based
  • Push-button calibration, settings stored in non-volatile EEPROM
  • Accuracy of 4000 divisions over the calibrated range
  • Zero (dead load) offset up to 100%
  • Calibration test facility without check weight
  • Selectable input signal filtration
  • Industry standard 0-10V DC and 4-20mA outputs
  • Power On and Fault LED’s

This compact microprocessor based Load Cell Amplifier connects with up to four strain gauge load cells, provides 10V DC excitation to the load cells and amplifies the resulting signal to produce a calibrated 0-10V DC and 4-20mA gross weight output. In typical applications, the output is connected as an input to a PLC system and/or to an analogue or digital indicator.

Calibration adjustments are performed by means of the two recessed push buttons in conjunction with the rotary switch and a digital test meter. With no potentiometers or links, access to the inside is not required. A single test weight can be used to calibrate using the straight line characteristics of the amplifier and variable gain settings to increase the sensitivity.


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