Honeywell SC1000 - Manual (Page 88)

page 88 008-0608-00
11.5.5
CALIBRATION
DATA
Sub-Menu
This sub-menu enters the values that will be used by the instrument when it calibrates
itself to the transducer. The menu items that are displayed will change according to
what the
CALIBRATION TYPE
is set for.
FULL SCALE VRMS
Menu Item The transducer output when its full-scale displacement is applied to it, in Volts RMS
(root-mean-squared) assuming 3 VRMS excitation. This menu item is used by the
instrument to set gain of its amplifier circuit. This value is normally found on the trans-
ducer’s Certificate of Calibration issued by its manufacturer.
KNOWN POINT x/y
Menu Items This enters the engineering units for the known-displacement calibration points.
These points must match the actually displacements that you will apply to the trans-
ducer during calibration. The number of calibrations points depends on the
CALIBRATION
TYPE
.
When using the 2-Point Known Displacement Calibration type, the following menu
items are available:
• “
KNOWN POINT 1/2
”: point 1 of 2, usually 0% of the transducer’s full-scale capacity.
• “
KNOWN POINT 2/2
”: point 2 of 2, usually 100% of the transducer’s full-scale capacity.
When using the 3-Point Known Displacement Calibration type, the following menu
items are available:
• “
KNOWN POINT 1/3
”: point 1 of 3, usually 0% of the transducer’s full-scale capacity.
• “
KNOWN POINT 2/3
”: point 2 of 3, usually 50% of the transducer’s full-scale capacity.
• “
KNOWN POINT 3/3
”: point 3 of 3, usually 100% of the transducer’s full-scale capacity.
When using the 5-Point Known Displacement Calibration type, the following menu
items are available:
• “
KNOWN POINT 1/5
”: point 1 of 5, usually 0% of the transducer’s full-scale capacity.
• “
KNOWN POINT 2/5
”: point 2 of 5, usually 25% of the transducer’s full-scale capacity.
• “
KNOWN POINT 3/5
”: point 3 of 5, usually 50% of the transducer’s full-scale capacity.
• “
KNOWN POINT 4/5
”: point 4 of 5, usually 75% of the transducer’s full-scale capacity.
• “
KNOWN POINT 5/5
”: point 5 of 5, usually 100% of the transducer’s full-scale capacity.
NOTICE
To insure both correct operation of the transducer and application of the dis-
placement, the instrument expects the voltage applied at each known-displace-
ment point to be increasing. For example, the displacement applied at Known-
Displacement Point 2/2 must cause the transducer to produce a more positive
voltage than at Known-Displacement Point 1/2. You may need to swap the
(+)Signal and (-)Signal wires on the 12-pin channel connector to accomplish
this.