Design Analysis H-350XL, Owner'S Manual

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24-2 Maintenance/Trouble Shooting
XL™ Series
Artificially High Data:
1- This could be an indication that the orifice in the water is restricted or plugged. Contact
the manufacturer of your gas purge system to find out how to purge the orifice. You may
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want to change your supply gas from dry Nitrogen to Carbon Dioxide (CO ) for a short
period of time. This will create Carbonic Acid at the end of the orifice and will serve as a
cleaning agent to remove deposits.
2- If you have entered a User Units Slope and/or Offset, either in our data recorder or in the
XL™, verify that they are calculated and entered correctly.
3- Verify that the orifice line has not moved.
Artificially Low Data:
1- This could be an indication of a leak somewhere in your system. Check all of your
plumbing connections with a soapy water solution or a commercial leak detection
solution such as SNOOP . Because the XL™ has laboratory quality accuracy, even the
®
smallest leak will show up as an error in your data.
2- If you have entered a User Unit Slope and/or Offset, either in your data recorder or in the
XL™, verify they are calculated and entered correctly.
3- Verify that the orifice line has not moved.
Wrong or Erratic Data:
1- Check the sensor status window for possible errors. (See section 3.6)
2- Check battery voltage and all connections.
GOES not transmitting:
1- Check power to the GOES radio, do so under a load.
2- See if the GOES time is correct, if it is stopped, it indicates power to the radio was lost,
stopping the clock. The radio will not transmit if the GOES clock is not running.
3- Check all antenna wires.
4- Check antenna alignment.
5- Use a power meter to measure the power output of the radio, and the reflected power.