25
Calibrating the Analog Signal
The analog signal coming to the ProSample from an analog device must be calibrated before configuring any analog
program. To calibrate the analog signal:
1.
From the Main Menu, select
Setup
g
System Settings
g
Analog Signal
g
Calibration
2. Analog 4-20 mA and Analog 0-20 mA
are available options.
Highlight the appropriate option for your device and press the
Enter key.
3.
On your analog device, choose to output a mA value that
corresponds to the low value of the range selected in step #3.
As an example, if 4-20 mA was selected in step #3, output a 4
mA signal from your analog device.
4.
The
Measured Value
on the ProSample display should equal
(or nearly equal) the desired mA value. Press the Enter key to
confirm.
As an example, if 4 mA is the signal sent from the analog
device, the Measured Value might be equal to 3.9 mA. Please
note the screenshot below was taken before the mA device
sent a 4 mA signal to the ProSample.
5.
On your analog device, choose to output 20 mA.
6.
The
Measured Value
on the ProSample display should equal
(or nearly equal) 20 mA. Press the Enter key to confirm.
7.
The ProSample will display
Calibration Done
. Press the Enter
key to return to the System Settings menu.
Wiring and Connecting Analog, Digital I/O, and SDI-12 Devices
