# Difference between revisions of "Strain Gauge Amplifier"

From Elsys Wiki - Help and Recources for TranAX and TraNET DAQ

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==== Formulas ==== | ==== Formulas ==== | ||

− | <syntaxhighlight lang= | + | <syntaxhighlight lang=vb style="border:0px dashed blue"> |

G = 1 ;Amplifier Gain | G = 1 ;Amplifier Gain | ||

+ | S[mV/V] = 10 ; Sensitivity | ||

+ | LR[Kg] = 1 ; Rated Load | ||

+ | L[Kg] = 0.5 ; Applied Load | ||

+ | Vex[V] = 10 ; Excitation Voltage | ||

− | Vout[mV] = G * Vex | + | Vout[mV] = G * Vex * S * L/LR |

− | + | ; Calculate the applied load from the output voltage | |

− | + | Load = Vout * LR / (G * Vex * S) | |

− | |||

− | * G | ||

</syntaxhighlight> | </syntaxhighlight> | ||

## Revision as of 13:28, 6 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:

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

#### Formulas

```
G = 1 ;Amplifier Gain
S[mV/V] = 10 ; Sensitivity
LR[Kg] = 1 ; Rated Load
L[Kg] = 0.5 ; Applied Load
Vex[V] = 10 ; Excitation Voltage
Vout[mV] = G * Vex * S * L/LR
; Calculate the applied load from the output voltage
Load = Vout * LR / (G * Vex * S)
```