Eureka MANTA+ - Logging Redundantly with Telemetry; Controlling Sensor Fouling

Eureka Manta Manual Page 50 of 67
It’s a good idea to remove the batteries from the Manta battery pack if the Manta is not going to be used
for a while. This helps prevent battery leakage.
E.10 Logging Redundantly with Telemetry
If you wish to add redundancy to your data collection, you can connect a Manta to a third-party data
logger, telemetry device, etc. to store data in the Manta (using its standard Logging function) and in the
third-party device (according to its manufacturer’s instructions).
Since you will be using an Underwater Cable, you can run power to the Manta from a surface power supply
to provide power to Mantas – you don’t need a Manta Battery Packs.
Or, the surface power supply can power Mantas with IBP’s, thus saving your batteries for emergencies
such as the failure of the surface power supply.
Either way, you will end up with data records in both the Manta and the third-party device.
More information can be found in Manta Logging with an Uninterrupted Power Supply and Manta
Power Options.
E.11 Controlling Sensor Fouling
Fouling cannot be eliminated altogether, but Eureka offers three effective options to minimize sensor
fouling and maximize data quality.
1 Eureka’s unique Copper Gauze Antifoulant is a double-wall sensor guard (below) envelops the sensors
with copper gauze. Unlike copper screen, the copper gauze dissolves with time, killing or discouraging
biota that would otherwise collect on the sensors. Available on all Mantas.
We strongly recommend that you do not use lithium batteries in any Eureka battery pack.
Lithium batteries don’t like water and may cause a dangerous build-up of pressure if they
get wet during a deployment. That pressure can damage the instrument and/or you.
The copper-gauze method works better than copper screen or copper parts. Solid copper
rapidly develops an oxide coating – stuff may not grow on the copper part, but the copper
will not protect the sensors. The copper gauze dissolves slowly, bathing the sensors in
copper ions that discourage biological growth.