Difference between revisions of "Strain Gauge Amplifier"

From Elsys Wiki - Help and Recources for TranAX and TraNET DAQ
Jump to: navigation, search
m
Line 9: Line 9:
 
[[File:sga_4wire_full_bridge.JPG|frameless]]
 
[[File:sga_4wire_full_bridge.JPG|frameless]]
  
<math>\alpha</math>
+
The 6-wire mode compensate any voltage drops on the excitation voltage line between the amplifier and the sensor/load cell.
 +
 
 +
==== Formulas ====
 +
<nowiki>Vout[mV] = G * Vex[V] * Sensitivity[mV/V] * Load/(Rated Load)</nowiki>
 +
 
 +
<nowiki>Load = Vout*(Rated Load) / (G * Vex * Sensitivity)</nowiki>
 +
 
 +
where:
 +
* Vout = Output Voltage of the Amplifier
 +
* G = Amplifier Gain
 +
 
  
  

Revision as of 15:19, 5 October 2017

Connection and Wiring Guidelines

Load Cell

A load cell based on strain gauge sensors is basically a full wheatstone bridge which is specified by its voltage sensibility in [mV/V] of the applied excitation voltage and the load sensibility in [Applied Load/Rated Load].

The SGA-2 Amplifier can be connected either in 4- or 6 wire mode:

Sga 6wire full bridge.JPG Sga 4wire full bridge.JPG

The 6-wire mode compensate any voltage drops on the excitation voltage line between the amplifier and the sensor/load cell.

Formulas

Vout[mV] = G * Vex[V] * Sensitivity[mV/V] * Load/(Rated Load)

Load = Vout*(Rated Load) / (G * Vex * Sensitivity)

where:

  • Vout = Output Voltage of the Amplifier
  • G = Amplifier Gain


Useful Links