Hi Adam,
We have an MAP 215-50 from 1994. I have a circuit diagram for the
Hall Probe dated 1985. I can scan it and send it to you if you would
like. Our magnet controller has a manual and digital mode. Does the
magnet current go to full with it in manual mode and the pot. set to
zero? I would think that the readback from the Hall probe would not be
used if the controller is in manual mode.
Thanks
Josh
On 8/15/2019 4:33 AM, Adam Frew wrote:
> Dear Noble Gas colleagues,
>
> We are having a problem with our MAP 215-50 magnet controller. When “field” control is selected the magnet controller pushes the magnet current to full as soon as the power is turned on. We have tested the magnet controller box electronics and cannot find any obvious problems. We are now looking at the hall probe circuitry which feeds into the controller but the circuit diagram we have dose not match the circuitry we see inside the hall probe amplifier box. Would anyone have any idea of the hall probe make and model used in a MAP 215-50 built in 2000 and or have a hall probe circuit diagram for an instrument of that era?
> Any suggestions as to what may be causing our magnet current control issues would be much appreciated.
>
> Cheers
>
> Adam Frew
>
> BSc (Physics), BSc (Geophysics) Hons
> Technical Officer
>
> Western Australian Argon Isotope Facility
> John de Laeter Centre
> Curtin University
> Tel | +61 8 9266 4731
> Mobile | +61 402 036 860
>
> Email | [log in to unmask]
> Web | http://jdlc.edu.au/
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--
Joshua Curtice
Research Associate III
Department of Marine Chemistry and Geochemistry
Woods Hole Oceanographic Institution
MS 25, Clark 4
Woods Hole, MA 02543-1541
Phone: (508) 289-2618
Fax: (508) 457-2193
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