Tanked Unit Overview


Tanked units are designed to measure the empty space in a wine tank from the top down. The units are able to work through all stages of the process by lowering a float or disk to the surface of the liquid, upon contact the amount of line deployed is measured and recorded in the application database and reported to the end user. The unit will then retract the line and the float remains docked until the next reading is needed.


CO2 is measured by circulating air through the supplied hatch fitting and back into the main unit. Data is reported back to the server via the wifi network and then to the end user via a browser interface. Reporting is in PPM –  any reading below 10,000PPM would indicate there is oxygen present.


System Installation


Power Requirements 240v / 24v DC (Minimum 1.5A) (AC adaptor supplied)

Wifi / 4G network (Wifi hotspot should be within range of the unit)




Ensure power is not connected. The unit is shipped fully assembled, the first step is to carefully pull the disk away from the unit to expose  about 15cm of mainline. Identify the top of the float boss and unscrew from the main body of the float boss. This will allow you to remove the float boss and disk from the main unit. * Pay attention to the way the line is wound to the float boss as this is a critical part and it should be reassembled with at least 7 – 10 wraps around the upper float boss. We advise adding some silicone to the top of the float boss when assembling to prevent any product from penetrating.


Once the float is removed you can then remove the mounting nut and self leveling washers and seals from the unit which is now ready for installation into the hatch.


The units are designed to mount direct through hatch – 2 holes are required, 1 for main unit 1 for gas interface – self leveling washer kit supplied. Units should be installed close to level, a slight working angle is acceptable and will not affect the operational accuracy  of the units. Units should be secured firmly in place by the locking nut (s) supplied.


Self leveling washers are supplied with oring seals  in 2 parts for each side of the tank hatch, the unit should be inserted through the hole with the locking nut tightened firmly. Locktite should be used to ensure the unit remains in place.


  • Consideration should be given to the lid opening to ensure the unit does not make contact with any structure.
  • Once a unit is tilted past the working angle the unit will no longer function and will report the tank hatch as being open. (70 degrees)




The gas nozzle mounts through a single hole and should be positioned as close as possible to the main unit. Supplied hoses should be trimmed to length and pushed into the fittings at the base of the main unit.




Units are 24v DC 1.5A and are shipped with an AC adaptor. If the adaptor is used then adequate water proofing steps must be taken to ensure no moisture can contact the connection plug or the transformer.




The units are shipped with hardcoded wifi credentials supplied independently for each installation.  4G dongles should be installed close to the unit in a waterproof container out of direct sunlight. Connect WIFI antenna to unit.




Green – Normal operation

Blue – Connected to wifi

Blinking Blue – Data present (normal)

Blue strobing – Wifi issue check modem, reboot unit contact support

Blue not working – No Wifi




The buttons can be used  to deploy and retract the line, both buttons must be held down together for 5 seconds before they will work. At the end of the operation both buttons must be held down again for the unit to return to its normal state or the power should be reset. Always perform a test dip with the software after using manual buttons to be sure. The line can be deployed for trimming or cleaning maintenance.


Before use


Check and clean the disk or float you intend to use, check line for stains or contamination, clean or trim line.


Overall tank depth should be matched to the unit for the best performance. From time to time depending on the number of dips and the working range it is advisable to respool the line.




Tanks are added and setup via the client login here –  http://app.tank-ed.com.au/login Dip charts can be uploaded for each tank in CSV format. An positive or negative offset value can be added for each tank depending on how the unit is mounted in relation to the absolute top of the tank neck.


Taking a Dip


Once logged into the application the “dip tank” button will activate the unit, latency can be up to 10 seconds, depending on the tank size and volume results can be almost instant or take up to 30 seconds. CO2 data takes at least 3 minutes to sample after the first dip, the latest data can be accessed by refreshing the screen after 3 minutes or by taking another dip.




In development the units have proven to be highly robust, at this stage the only issues have been local interference to the wifi signal, the unit will detect a loss of signal and attempt to reconnect until the connection is reestablished.


A correctly spooled line will give the same reading over and over, from time to time a line can spool in a random fashion and cause the unit to return small variations from one dip to the next. It is good practice to run longer dips periodically  to “clean up the spool” In normal operation this should not be an issue.


Float stopping – Early prototypes with lighter floats could occasionally output a false positive or short dip. Firmware changes and hardware revisions have resolved this but we advise dipping more than once if an unexpected tank volume is reported.


CO2 Reporting


CO2 sensors take time to settle in, the first few dips may not return useful data. If you suspect problems with CO2 sensors then please contact support and we can troubleshoot the issue remotely.


Float Missing


The float or dipping disk should be installed with care at installation and after cleaning. We advise at least 7 – 10 wraps of the line to ensure the float will remain secure.




The units require a minimal amount of maintenance. The line should be checked for contamination and wear, trimming or cleaning the line may be required. The float and float boss should be cleaned as required. Cap nuts should be checked for tightness. The CO2 sensor may require baseline calibration from time to time which can be executed remotely through the software.