User manual

A511 User Manual, Rev. 1.1 - 10 - 08/2007
Customizing the Default Settings:
To start the configuration Menu press the “Menu ON” key once. You will see the following
three parameters on the screen of your A511:
Figure 7: Analog Measurement option screen
The top entry displays the status of the Permanent Power Supply setting,
the centerline displays the status of the Measurement Mode, and
the bottom entry displays the status of the Average Measurement Mode.
Permanent Power Supply:
Toggle between the two options by pushing the F1 key:
• “OFF” – the A511 will auto-shut down after 60 seconds, if no keys are pushed.
• “ON” – the A511 will not shut down automatically. To shut if OFF press the “Menu
ON” key for 2 seconds and release. This mode is useful for tasks like
normalizing C-Probes.
Measurement Mode:
Toggle between the two options by pushing the F2 key:
• “permanent” – the device will permanently sample sensors, about 60 - 70 times per
second, and display each reading.
• “after 2s” – the supply voltage of the sensors will be turned on for approx.
2 seconds and afterwards turned off for approx. 3 seconds. The
measurement will be started at approx. 1.8 seconds, and the very last
reading prior to turning the supply voltage off again is displayed. This
simulates the way an Adcon RTU samples sensors. It avoids quickly
fluctuating values, and facilitates the recognition of erroneous sensor
behavior. The fluctuations of values should be limited to overall accuracy
of the sensor.
Average Measurement Mode:
Toggle between the two options by pushing the F3 key:
• “OFF” – only the last reading will be taken and displayed.
• “ON” – ten readings will be taken and the arithmetical average value will be
displayed.