OHAUS SCOUT, Руководство по обслуживанию

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2-1
CHAPTER 2 THEORY OF OPERATION
2.1 BALANCE OPERATION
This chapter contains basic theory of operation of the balance. An exploded view
drawing is included in Chapter 5 which identifies all mechanical components of the
balance.
2.1.1 Operation
The AC Power Adapter cord plugs into a receptacle at the rear of the balance. The
Rezero On switch when pressed (located on the PC Board), applies power to the
balance. When first turned ON, the balance displays a segment check for a few
seconds. A tare function is performed after initialization so the balance displays zero
and is ready for use. During any weighing operation, the user can tare the balance and
weigh increments above and below the weight of the initial object.
To aid the user, an error routine is employed to indicate that the weight input is beyond
the limits of the balance. Various error displays indicate internal balance problems,
overload conditions, incorrect calibration masses and parts counting errors.
2.1.1.1 Turning the Balance ON
With no load on the Platform, switch the balance ON by pressing ReZero On. When
first switched ON, all segments of the display should be on as shown in the illustration.
Figure 2-1 illustrates the display sequence. This display check is displayed briefly
followed by a software revision number (which may be different from the display shown
below) and then the weighing mode.
Warm Up
Before initially using the balance, allow time for it to adjust to changes in environment.
Turn the balance on to stabilize the electronics. Recommended warm up period is 5
minutes.
BAT
PC
oz t
dwt
g
BAT
PC
oz t
dwt
g
g
(400 and 600 g)
(200 g)
g
Figure 2-1. Display Turn On Sequence.