Calibration Type Menu Item - Honeywell SC1000 Owner's Manual

12.6.4
CALIBRATION TYPE
Menu Item
This chooses the type of calibration technique to be used. There are two methods
that can be used to calibrate the transducer to the Input Channel. Each has
advantages and disadvantages as described in the table below.
Table 1-7: Comparison of Calibration Types
RECOMMENDED...
...for most applications
...when frequently swapping
transducers
...when best possible accuracy
required
PROS and CONS
Relative accuracy
Requires actual, calibrated loads
to be applied
CALIBRATION TECHNIQUE
Zero-scale point from...
Full-scale point from...
Linearity correction from...
It is important to know your application in order to select the appropriate cali-
bration type. When the best possible accuracy is required, Known-Load Calibra-
tion is recommended.
Calibration may be used instead.
The choices for this menu item are:
• " " means Shunt Calibration. First, you are prompted to apply
TYPE= SHUNT CAL
the load entered in the "
connects the Shunt Cal 1 and Shunt Cal 2 pins. This activates the trans-
ducer's or in-line amplifier's shunt calibration circuit which causes a
predictable apparent signal. The instrument then takes a reading and adjusts
itself using the "
SHUNT CAL VALUE
• " " means 2-Point Known Load Calibration. You are prompted
TYPE= 2 POINT CAL
to apply the loads to the transducer that were entered in the "
and " " registers. This technique assumes that the transducer is
KNOWN POINT 2/2
linear, so the usual loads used are zero scale and full scale.
• " " means 3-Point Known Load Calibration. You are prompted
TYPE= 3 POINT CAL
to apply the loads to the transducer that were entered in the "
and " " and "
KNOWN POINT 2/3
Shunt Calibration
no
yes
no
good
no
applied load
transducer output
when Shunt Cal pins
connected
N/A
However, if known-loads are not available, Shunt
" register. Next, the instrument inter-
ZERO SCALE VALUE
" register.
" registers. This technique can be
KNOWN POINT 3/3
SC Series Instruction Manual
2-, 3-, or 5-point
Known Load
Calibration
yes
no
yes
best
yes
applied load
applied load
2-point: none
3- or 5-point:
applied load
"
KNOWN POINT 1/2
"
KNOWN POINT 1/3
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