Subject: RE: BCS
Date: Mon, 23 Jul 2001 09:51:20 -0500
From: "Kaufman, Tom" <Tom.Kaufman@mts.com>
To: "Larson, Rod" <Rod.Larson@mts.com>
CC: "Olson, Doug" <Doug.Olson@mts.com>

The bolts on the top of the load cell hold the load cell to an adapter
plate.  The load cell itself has welded covers on top and bottom to
provide a hermetically sealed cell.  So taking these bolts out will not
help.
The connector is mounted onto a small box that is welded to the load
cell.  If you can go into this small box through where the connector
comes in, you may find solder tabs inside.  I don't think you can damage
it any more than it is, so it may be worth a try.  Tom Kaufman

> -----Original Message-----
> From: Rod Larson [SMTP:rod.larson@mts.com]
> Sent: Friday, July 20, 2001 9:36 PM
> To:   Kaufman, Tom
> Subject:      BCS
>
> Tom,
> Well, finally had great success late Friday.  All but 1 of the 18
> strain
> gages work fine and we are going to run them w/ 497.22s cuz it's
> easier.  Gage #1 was bad and that's why no one could use it.  Pat
> thought that completion resistors were required, but after doing an
> ohm
> check it was obvious that complete bridges were available and that the
> ATC equipment was configured wrong, but the 497.22s would work fine.
> We
> verified that 17 gages work fine.  We can run strain control on 17
> gages
> and run stroke control on #1 slaved to stroke #2 like we're doing in
> load control.  The load cell for #1 doesn't work anyway, so can't get
> load data for it at all.  I can make changes to s/w to run strain
> control loop right.
>
> So....Monday we will run strain control w/o too much trouble.  The
> load
> cell cable for #8 was pulled out by the roots - solder pads were
> broken
> and the cable extracted out of the innards of the load cell.  The
> question is now - can the load cell be opened by the 8 odd bolts on
> the
> top and the cable re-soldered??  ATC has some good technicians, but
> the
> load cell will have to be opened to be repaired.
>
> Rod
>
