Fluxmeter Selection Factors
One of the most important considerations of integrating
Fluxmeters is drift, which is always present due to the extended time
of measurement. Drift is the change in the instrument's displayed
values that is not due to flux changes.
All integrating fluxmeters must make compensations for drift.
It is the accuracy of these compensations and the overall stability of the system that give good drift and hence integrator performance.
Hirst’s Integrating Fluxmeters feature fully automatic drift
compensation technology. The drift correction operation
instruments existing drift rate and makes the necessary adjustment to
obtain optimum compensation. When not performing a measurement,
instrument tracks any changes in the drift rate and makes the necessary
Calibration and User Coils
A very common requirement of Fluxmeters is for the user to manufacture their own search coils. Hirst’s range of Integrating Fluxmeters (IFM) come with the ability to remember the details of a specific user probe.
The user can program the turn / area product of the coil to
convert the measured voltage into flux density.
The IFM range of Fluxmeters come equipped with a PLC port to enable control via 24v logic signals. This makes interfacing with existing PLC and mechanical handling systems simple.
Independent output signals are provided for PASS and FAIL and an input signal is provided to initiate a measurement sequence.
The IFM02 and IFM03 also feature an RS232 and a USB port. Both
these ports can be used to control the instrument and acquire data.
In many industrial applications it can be useful to isolate the measurement coil from the instument input. For example during a magnetising pulse the resultant signal may be so large as to damage the input. The IFM ranges offer remote control functions that include isolating the input as part of a measurement cycle.
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