Rice Lake MSI9300 PortaWeigh Crane Scale Operator Manual - Manual (Page 29)

MSI-9300 Crane Scale™ • User Guide Page 29
MEASUREMENT SYSTEMS INTERNATIONAL
Rev 1 7/27/02 for SW Ver 1-1
SEALING MSI-9300 CRANE SCALES
The 9300 Series Crane Scales are sealed with a standard lead-wire seal. The seal is used to prevent removal of
the seal screw covering the calibration enable switch. The wire is passed through the seal screw and through
an adjacent casting bolt. Use seal wire with a maximum diameter of .040” (1mm). 20 Gauge or smaller wire is
appropriate.
Once all channel parameters are set and calibrations completed replace the seal screw and tighten down
securely to ensure a water proof seal.
Sealing display/indicator devices (9750A, 9850 and 3750CS) is not required because all metrologically sig-
nificant features are stored in the 9300 device. The 3750CS does offer a sealing method to prevent calibration
tampering in industrial settings. However use of the 3750CS for calibration still requires pressing the calibra-
tion enable switch on the 9300 when it is set into LFT modes. The 9750A offers password protection modes to
prevent calibration tampering, but again, in LFT modes the calibration enable switch on the 9300 will have to
be pressed, requiring breaking the seal at the 9300 Series Crane Scale.
The Power must be cycled after a calibration of a LFT scale in order to reset
the sealed Calibration switch.
Remove only this screw for access to
the calibration enable switch. Do not
remove the casting Cap Screw.
Pass 20-24 AWG wire through this
casting Cap Screw and the Seal
Screw for Legal-For-Trade seal.
Scale Inspectors Lead Seal
Figure 4-1
Calibration Switch Pushbut-
ton is behind Seal Screw