Rice Lake PR5230 Fieldbus Transmitter - Manual (Page 120)

Commissioning PR 5230 Instrument Manual
EN-120 Sartorius
5.4.9 Subsequent Dead Load Correction
If the hopper/platform weight changes by an amount that is higher than the zero-setting range; e.g., due to
dead load reduction, dead load increase or mechanical changes, the functions for automatic zero tracking and
manual zero setting no longer work. To view the range which is already utilized by zero tracking or zero
setting, in [Calibration] press the
key; this also activates 10-fold increased resolution of the weight value.
Press again to return to the previous state:
Current zero set: 0.123 kg
If the entire zero-setting range is already utilized, you can still correct the dead load (CAL switch must be
open) without affecting other calibration data/parameters.
To do this, select -[Weighingpoint]-[Calib]-[Modify] and determine the dead load with [Deadload at]-[by
load] (see Chapter 5.4.5).
Note:
If the liniarization is active (see Chapter 5.4.10):
After selection of the line ‚Dead load at’ the following tip is displayed:
Can not be changed here
while linearization is active
5.4.10 Linearization
After selecting -[Weighingpoint]-[Calib]- [New]/[Modify] and after completing calibration, select the
linearization menu with softkey [Linear.]:
by load by mV/V by data Linear. CalcTest
When you press [Linear.] the menu shown below appears:
Weighingpoint/WP A/Calibration/ Linearization
Max at 3000.00 kg 1.000000
Add by mV/V by load
To add a new linearization point, press [Add], fill in the weight value, apply the weight and press [by load].
Then fill in the corresponding value in mV/V for the weight. After pressing [mV/V], the value can be entered
directly.
Up to 3 linearization points can be determined.
A linearization point can be added with [Add], removed with [Delete] and changed with [Change].
Weighingpoint/WP A/Calibration/ Linearization
1. Lin. point 750 kg 0.250010
2. Lin. point 1500 kg 0.500020
3. Lin. point 2250 kg 0.750040
Max at 3000.00 kg 1.000000
Add Change Delete by mV/V by load
A linearization point can be selected with , changed with [Change] and deleted with [Delete].