Bindicator SonoTracker Ultrasonic Liquid Level, Руководство по установке и эксплуатации, Страница: 87 / 96

Problem Solution
The controller is displaying
data while channel
monitoring, but the value
does not agree with the
known measured level in
the vessel.
1. Check the raw target value to compare it to the known measured level in the
vessel. The raw target is the ‘raw’ distance from the face of the transducer to the
target, before averaging, tracking, filtering, etc. are applied. The raw target has
units of inches (or centimeters).
• To obtain the raw target, press the F1 Key while in Manual Mode. The top
line of the display now shows the raw target. Press F1 again to turn off.
If the raw target value agrees with the measured level, the values input for
averaging or filtering parameters, plan or fullpoint may be causing the problem
with the displayed data. Contact the Bindicator
®
Service Department. In order to
allow us to help you with troubleshooting over the phone, first write down all of
the parameters you entered during the Startup Procedure, and in the Calibration
and Service Menus. See Appendix D.
2. Disconnect the transducer and reconnect it directly to the controller. Aim it
at a target of a known distance that is greater than the minimum range of the
transducer (the target must be farther than 3.5’ (1.1m) away). If the level reads
correctly, reconnect the transducer into the application and aim the transducer to
ensure proper level. Refer to Chapter III, System Installation, for installation and
aiming information.
3. Check the cable to ensure that there are no ground points within the cable.
4. Turn the AC power off. Measure the resistance across the transducer leads:
• 25’ Transducers - Verify resistance is between 180 and 220K ohms
• All other Transducers - Verify resistance is between 90 and 110K ohms.
Resistance of 0 ohms indicates a short. Resistance above the specified range
indicates a transducer or cable open or a bad connection to the controller.
• Check the connection of the transducer cable to the controller. A common
error is wires inserted in the wrong side of the crew terminal connector
clamps. Also check polarity and shield wire.
5. Verify that the frequency of operation of the channel matches the transducer
used for the application. The frequency selection can be viewed and modified in
Transducer Menu. Refer to Chapter IV, Monitor.
6. Verify that the maximum range is below the bottom of the vessel. Maximum
range can be viewed and modified in Range/Filters. Refer to Chapter IV.
7. Adjustments to the power and gain settings may be required. These
adjustments should only be made by trained operators or Bindicator
®
personnel.
Contact the Bindicator Service Department.
8. If you have followed the above steps and the displayed data still does not
agree with the known measured level in the vessel, contact the Bindicator
®
Service Department. In order to allow us to help you with troubleshooting over
the phone, first write down all the parameters you entered during the Startup
Procedure and calibration.
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SON280020 Rev. C