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Dual Digital Display DC Voltmeter & Ammeter 0-100V 0-100A (CE05132)

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An all in one solution for monitoring voltage and current.

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Hi. I was hoping to use this to monitor a salt cell on a pool chlorinator but that occasionally reverses polarity to clean the cell. Do you know if this meter will simply not display if the polarity is reversed or could it be damaged? I would power the meter from a separate supply.

Hi Andrew,

Welcome to the forum! :partying_face:

Unfortunately, it doesn’t appear that this ammeter is able to handle a reversed polarity. I don’t believe that it will damage it, as the majority of the current would be passing over the shunt which shouldn’t be an issue to reverse. However, it wouldn’t be an appropriate part for that situation. If you’re only monitoring the salt cell for a short time, then you should be able to use an appropriately rated multimeter for that application. If you’ve got any further questions please let us know, enjoy your day!

Thanks for the info. I’ve used a multimeter for one-off measurements, was hoping for something I could leave hooked up. Not to worry.

Hey Andrew,

Do you know how many amps will be running through the wires?
I would check out these two boards to see if they would work for you application:

Liam