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pekkaj avatar image
pekkaj asked

Measure air and water temperature with BMV-712

Is this possible with the accessory kit or does it work only for metal contact (battery etc)? And what about Gerbo temp probe? Or do you need a Ruuvi tag etc?

BMV Battery MonitorTemperature Sensortemperature
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3 Answers
kevgermany avatar image
kevgermany answered ·

It clamps on the battery terminal. Temp reported is thus both when in equilibrium, and if there's a difference, it will tend towards air temp due to the slower change in temp of the batteries compared to air.

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pekkaj avatar image pekkaj commented ·

I meant that if you don't connect it to battery but leave hanging in air or drop in water?

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pekkaj avatar image
pekkaj answered ·

Okay so followup question, how can you monitor air or water temp? Anyone built a system for that?

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mvas avatar image mvas commented ·
Then just run a red wire from the temperature probe back to the battery (+) terminal for power. Problem solved for Air Temperature probe. Then make the second probe, with bat (+) wire added waterproof.
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Kevin Windrem avatar image
Kevin Windrem answered ·

You can use the Victron temperature probe the connects to Cerbo although I'm not sure if it is waterproof enough to submerge.

Those temperature sensors are LM355. I've made these relatively waterproof with a length of heat shrink tubing crimped at the end while still hot.

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Related Resources

Victron temperature sensor disambiguation table - which product supports which sensor


Additional resources still need to be added for this topic

Victron BMV battery monitors product page