Eureka MANTA+ - Deployment and Applications

Eureka Manta Manual Page 65 of 67
3 How does the Manta2 communicate (SDI-12, etc.)?
Mantas speak RS-232 as their native language, but Eureka provides converters for SDI-12 and
MODBUS if you prefer. (Manta Comm Protocol, Manta SDI-12 Adapter, and MODBUS
Communications on Eureka’s Web site)
4 What com port should I use?
Most people should never have to worry about choosing a COM port; just let the PC do the work.
(C.4)
5 Is the colored top line an average of the values or the latest readings?
No; the data in the colored band is the most recent line of data obtained from your Manta. (C.2)
G5 Deployment and Applications
1 How long can I expect my batteries to last?
Battery life is difficult to predict because it varies with Logging Interval, quality of batteries, number
and type of sensors, and water temperature. Battery life is best determined by experimenting with
your specific Manta in your specific applications. (E.9)
2 For my battery pack when looking in the log file at battery voltage, at what point will the Manta2 stop
logging?
The Manta can show the voltage provided via the cable and the voltage provided by an Internal
Battery Pack. The voltage provided by an External Battery Pack is shown as cable voltage. There is no
fixed cut-off point, but any time the battery pack or cable voltage drops below about 5 VDC, the
voltage may not be adequate for the Manta to boot properly. (E.9)
3 What How do I deploy my sonde when there is no bail hook? Is it OK to hang by the cable? How much
weight will the cable hold?
When properly attached, the Manta Underwater Cable can support well over 50 pounds without using
a Bail Kit. You can hang the Manta by the Underwater Cable if the load is not likely to exceed 50
pounds. (B.4)
4 How do I attach the underwater cable to the sonde?
Please see B.4.
5 What anti-fouling products to you offer?
We offer three anti-fouling aids, including the uniquely effective copper-gauze method. (E.11)