Mantracourt Electronics Limited
– ICA User Manual
15
Chapter 4 Calibration
The ICA amplifiers can be calibrated with the transducer connected provided that two calibration points can be
implemented e.g. by applying known weights or forces. If this is not possible, a stable mV source or load cell simulator
can be used if the precise sensitivity (mV/V) of the transducer is known.
Figure 4.1 Connection Details for Calibration
1.
Apply the known
low
calibration conditions (weight, force or mV/V). This may be zero if required, and using
the ‘Z’ potentiometer (Zero), set the output to the relevant low level depending on the model e.g. 0.1 V for the
ICA1H, 4 mA for the ICA4H etc.
2.
Apply the known
high
calibration conditions (ideally between 75% and full scale) and adjust the ‘S’
potentiometer (Span) to set the output to the relevant high level depending on the model e.g. 5.1 V for the
ICA2H at full scale, 20 mA for the ICA4H etc.
3.
Re-apply the known
low
calibration conditions and re-adjust the Zero if required.
