Rockwell Automation 937CU-AISTR-DC1 Strain Gauge Converter Installation Instructions - Manual (Page 19)

Bul. 937
C Strain Gauge Converter Installation Instructions
Without adjustment , the gross value is calculated as follows:
This results in the following assignment: 0 mV is converted into 0 unit, the maximum sensor signal (=
sensitivity x excitation voltage) is converted into the maximum cell load of the selected unit, interim
values are converted proportionally.
Rate, Cell error, Smoothing
• If you have selected the fast setting for Rate, the Sensor failure and Smoothing menu options are
not displayed. In this case, a check for sensor breakage and smoothing is not possible.
• If you have selected the On setting for Sensor failure, a check for sensor breakage is performed
after each measurement (terminals 1 and 2). Possibly, the Strain Gauge Converter returns the
error message Err CELL. Unless this check is enabled the Strain Gauge Converter might
process uncontrolled input values until the sensor failure has been detected.
Gross value
Sensitivity × Excitation voltage
----
M---e-----a---s---ur-----ed------ v------a--lu--------- e in
--------
mV
------
kg/unit
---------- ----------- × -----
Ce
--------
ll ra
------
ti
-----
ng
--- =
0
mV
Unit
0
Maximum cell load
Maximum sensor signal
= Sensitivity x Excitation voltage
= Cell rating/(kg/unit)
Note
1 7