3KP64 - 4.10
3000PLUS WITH 5D64 INSTRUCTION MANUAL V. SB.2
Daytronic Corporation
2211 Arbor Blvd. Dayton, OH 45439 • (800) 668-4745
Tel: (937) 293-2566 • Fax: (937) 293-2586 • www.daytronic.com
either by issuing the relevant commands (only) via the
button labeled
“Save and Send Calculated Calibra-
tion Values”
or by waiting until the entire instrument
configuration is downloaded. With every complete cali-
bration download, the present date and time will be
entered in the
Date/Time of Last Calibration field on
the module’s
Calibrate / Configure page.
If, after you have calibrated the 3000PLUS by pressing
the
Save and Send… button, you wish to restore the
meter to the calibration that existed before you pressed
the button, you may do so by pressing the
Restore
Previous Absolute Calibration
button, as explained in
the Configurator ON-LINE HELP.*
TWO-POINT (DEADWEIGHT) CALIBRATION
Unlike absolute calibration, two-point calibration is fully
“on-line.” In its computation of the required calibration
constants, the Configurator will use the
Instrument
Calibration
window’s “live” scaled output reading (see
Fig. 14 for the
Two-Point Calibration page).
The Configurator will step you through the entire cali-
bration procedure, enabling appropriate data fields and
displaying appropriate prompting instructions at each
step.
Each required calibration value will be automati-
cally sent to the 3000PLUS as soon as it is calculated
and verified.
It is strongly recommended that you perform an
ABSOLUTE calibration prior to every two-point calibra-
tion. This will not only yield a “nominally” calibrated
instrument, but will also automatically ensure a good
“first-approximation”
Range (RNG) setting. If you go to
the
TWO-POINT Calibration page without having first
performed absolute calibration
(since you last opened
the
Instrument Calibration window), the Configurator
will bring this to your attention.
In very brief outline, the sequential steps of the two-
point calibration procedure are as follows (in most
cases, you will use the
Continue button to advance
from one step to the next and the
Back button to return
to a prior step, if it is to be repeated; for complete
details concerning each step, see the Configurator ON-
LINE HELP):
1. Make sure that the desired FULL-SCALE READING
IN ENGINEERING UNITS (
FSU) has been entered
on the
Instrument Setup page.
2. Make sure that the appropriate RANGE (
RNG)
value has been selected on the
SC Module Setup
page.**
3. Click the
Begin Calibration button.
4. “Unload” the transducer—i.e., establish transducer
“zero” input condition (less than 20% of full scale).
5. Enter DESIRED
ZERO-POINT READING in engineer-
ing units (volts or otherwise).
6. Repeat the zero-point procedure, if necessary.
7. “Load” the transducer—i.e., establish transducer
“span” input condition (between 80% and 100% of
full scale).
8. Enter DESIRED
SPAN-POINT READING (in engi-
neering units).
9. Repeat the span-point procedure, if necessary.
10. If NEGATIVE SYMMETRY adjustment is desired,
establish transducer “negative span” input condi-
tion.
11. If NEGATIVE SYMMETRY adjustment is desired,
adjust the displayed
SYM value to obtain the
desired output reading (see Fig. 12).
12. If POSITIVE LINEARITY adjustment is desired (see
Fig. 15), apply input loading in the positive direction
to approximately half of the transducer’s nominal
full-scale rating.
13. If POSITIVE LINEARITY adjustment is desired,
adjust the displayed
LNP value to obtain the
desired output reading (see “Midscale Linearity
Corrections,” below, for details).
14. If NEGATIVE LINEARITY adjustment is desired (see
Fig. 15), apply input loading in the negative direction
to approximately half of the transducer’s nominal
full-scale rating.
15. If NEGATIVE LINEARITY adjustment is desired,
adjust the displayed
LNN value to obtain the
desired output reading (see “Midscale Linearity
Corrections,” below, for details).
16. End or repeat calibration.
Every time a new
RNG, MSF, or MIO value is automati-
cally computed and sent to the 3000PLUS during the
two-point procedure, the present date and time will be
entered in the
Date/Time of Last Calibration field on
the module’s
Calibrate / Configure page.
If, after you have calibrated the 3000PLUS via the two-
point procedure, you wish to restore the meter to the
4. SOFTWARE CONFIGURATION
AND CALIBRATION
* While this operation will return the connected 3000PLUS instru-
ment
to its previous calibration state by issuing appropriate
RNG, MSF, MIO, and SYM commands, it will NOT change the
corresponding values currently stored
in the present configura-
tion.
** The listed values for the RANGE (RNG) field are strictly “nomi-
nal.” In selecting the most appropriate
RNG setting, you should
consult the table of “practical ranges” given in the Configurator
ON-LINE HELP (and also in
Appendix B of this manual), which
takes into account the effective 4% overlap that has been built
into the 5D64 scaling structure.
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