CiDRA SONARtrac PW VF-100 - Manual (Page 177)

20835-01 Rev 04 Page 9-3
9.2 Initial Diagnostic Checks
9.2.1 Process On-Line
The passive sonar meter can be installed and configured with the
process in operation. Ideally, configuration is made with the process
operating at normal flow rates and operating conditions.
If the process is on-line (flowing) the following system checks should
be made.
9.2.2 Sensor Test
A Sensor Test all ‘ON’ sensors. (Individual sensors may be turned off
in the ‘Customize>Sensor Setup>State’ menu. Sensors should never
be turned off unless directed to do so by Technical Support
Personnel.) The test will take several seconds to perform. After the
test is completed, the screen will display test results.
A Sensor Test is made as follows:
Press any key except ‘EXIT’ on the keypad to enter the ‘Menu
Mode’.
The ‘Basic Config’ menu is displayed on Line 1 of the display.
Press the
↓ key to scroll to the ‘Diagnostics’ menu on Line 1.
Press the ‘ENTER’ key to access the options available under that
menu.
‘Sensor Check’ will appear on Line 2 of the display.
Press the ‘ENTER’ key to start the sensor test. Each of the
sensors will be tested. If any sensor does not PASS, repeat the
test. Individual sensor faults will be displayed on the display and
along with the recommended corrective action.
Perform any recommended corrective measures and perform a
Sensor Test. Repeat as necessary
Press the ‘EXIT’ key to return to ‘Operational Mode’.
9.2.3 Gain
An electronic ‘Gain’ (amplification) is applied to the sensor outputs.
Transmitter based gain control functions are provided through three
sub-menus
– ‘AUTOSET GAIN’, ‘CHECK/SET GAIN’, and ‘TEST
GAIN ’. Gain adjustments should be made to the system when the
process is operating “normally”.
The sensor head pre-amplifier gain sub-menus is accessed as follows:
9.2.3.1 Autoset Gain
‘Autoset Gain’ performs an automatic test and adjustment of the pre-
amplifier gain setting. It automatically cycles through pre-determined