ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 303)

Maintenance and Troubleshooting 8-19
4. Attach a new dryer tube to the pressure depth sensor by
inserting the brass barbed fitting into the open end of the plastic
tubing running from the sensor connector. Make sure the
tubing seats firmly against the fitting to prevent air or moisture
transfer.
Inserting the brass barbed fitting into the tube
5. Secure the new dryer tube to the monitor.
6. Remove the black end-cap from the dryer tube before re-
installing the monitor in the manhole.
Caution: If the cap is not removed, air will not be able to
enter the dryer tube, adversely affecting the pressure depth
sensor.
7. Use the diagnostics function in the Profile or Qstart software
to fire the sensor and check that the sensor is working correctly.
Replacing the Desiccant
When replacing the desiccant inside the pressure depth sensor dryer
tube, use indicating beads that are approximately 0.16 inches (4.1
mm) in diameter. Smaller beads may be able to escape the dryer
tube, enter the clear plastic tubing leading to the sensor connector.
The desiccant beads of the appropriate size for this dryer tube are
available through IETG (p/n 901-11055-00).