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MODEL 7561-PSDS
PORTABLE SENSOR DISPLAY – STRAIN BRIDGE
The first detected, valid calibration table from the TEDS device will be selected.
The user can select an alternative calibration table from the menu or Toolkit and this
selection will be remembered and the table will be re-selected next time the device is
plugged in.
The PSD will remember the last twenty connected TEDS devices so will automatically
select the most recently used calibration table and will re-use the User Experience
parameters such as Units and tare values.
There is also an option to ignore TEDS on specific devices so that the PSD Calibration
Ranges can be used instead of any Calibration Tables held in the connected TEDS
device.
In this case the User Experience parameters will be used from the selected Calibration
Range. The device will act as if there is no TEDS chip until the user re-enables TEDS
for this device. When a TEDS disabled device is connected again it will automatically
switch to the last used PSD Calibration Range.
Supported TEDs Hardware Devices
TABLE 1. SUPPORTED TEDS HARDWARE DEVICES
DS2431+ and
compatible devices
,
NOTE
A 4 Kbit (or larger) device is recommended where additional TEDS calibration
templates are to be included.
Extended TEDS Calibration Options
The PSD supports up to five extended TEDS calibration tables in addition to the
standard 2-point calibration. These can be any combination of template ID=40 (multi-
point calibration) or template ID=41 (polynomial calibration). This could be used to
provide multiple calibrations for the transducer, for example high range, low range,
tension & compression.
Typically, a TEDS-enabled transducer would be supplied with one additional
calibration template. The default behavior is to select the first calibration template,
or the standard 2-point if a calibration template is not found. The user can cycle
between all the available calibrations unless this feature has been restricted.
The TEDS standard allows very large or complex calibration templates to be defined.
For practical reasons the PSD imposes restrictions on the size and complexity that is
allowed.
Multi-Point Calibration (template ID=40)
• Maximum calibration points = 10
Polynomial Calibration (template ID=41)
• Maximum number of segments = 1
• Maximum number of coefficients = 10 (10th order polynomial)
DS2433+ and
compatible devices
DS28EC20 and
compatible devices
Model 7561-PSDS User Manual |
Issue A
008-0752-00
sps.honeywell.com/ast
| 9
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