GE VeriDri, Руководство пользователя

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Operating Instructions
8 VeriDri™ User’s Manual
5 Operating the Transmitter
After proper installation, the VeriDri transmitter is very easy to use. Simply
power the unit up and you are ready to begin taking measurements. As the
VeriDri stores moisture calibration data in non-volatile FLASH memory,
you do not have to enter data manually or worry about losing data during a
power loss.
Probes may need to be cleaned occasionally, depending on the application.
Consult a GE Applications Engineer for recommended cleaning intervals.
If a problem should arise with the probe, see “Error Handling” below for
the transmitter reactions to various error conditions.
5.1 Powering Up
After the VeriDri is wired as described in the previous section, you may
apply power to the unit. The transmitter takes approximately 20 seconds to
initialize and begin normal operation. The unit will meet specified accuracy
in about 3 minutes.
5.2 Error Handling
In the event of an error condition, the analog output reading is forced to the
following values:
•
≥
22 mA to indicate a short circuit in the probe
•
≤
3.5 mA to indicate an open circuit in the probe
CAUTION! Any attempt to open the module or remove the
sensor probe will void your warranty.