InWater Tracker
User Manual
–
2021
15
1.250.850.0022 | [email protected] | INWATERTECH.COM
3.5.
Membrane Cartridge Testing
If the membrane cartridge becomes damaged, clogged, or filled with water, the TGP readings will be
inaccurate. It’s important to routinely inspect the membrane cartridge. There are 3 ways to inspect the
membrane cartridge.
1)
Observe the TGP readings as the probe is steadily immersed in water. A fast increase (several
mmHg per second) in displayed values indicates a damaged or broken membrane tube.
2)
Visually inspect the membrane cartridge. The membrane cartridge should be clean and free of
kinks or holes.
3)
If a hole in the tubing is suspected, the syringe test can be done to identify leaks in the tubing as
follows.
3.6.
Silastic tubing test (TGP Syringe test)
1)
Remove the membrane cartridge from the TGP probe.
2)
Using the included syringe, draw the syringe plunger back half way back.
3)
Attach the cartridge tubing to the end of the syringe.
4)
Place the cartridge in a container of water and gently apply pressure to the plunger.
5)
If resistance is felt in the syringe when pressed and no bubbles appear from the cartridge when
placed underwater, there are no holes in the tubing. This indicates that the unit is good.
If bubbles appear from the cartridge when placed underwater, there are holes in the Silastic
tubing. This indicates that the unit needs to be replaced.
