Yes, a water meter will run backwards. Running your meter backwards is stealing and could result in your service being diconnected and or a fine.
Modern meters that are read via radio signals are sofisticated electronic instruments and will report leaks and reverse flows when read. So if your meter is a radio read type you had better not mess with it.
Yes you can use a flow meter to measure your water pressure. They are available at any home improvement retailer.
In some cases yes, but it depends on the motor's application (use). For example, the electric motor in a batery-operated toy car will turn backwards if you reverse the polarity. Other more complex motors won't work at all, or can be damaged if you reverse the polarity. it is an AC motor that runs the Wattmeter, it is all about the direction of current flow to make the meter run backwards you would need to swap the incoming active and the incoming neutral with the outgoing active and the outgoing neutral, thereby reversing the meter. reversing the Active and Neutral does nothing because they already are swapping between themselves at 50 times a second or 60 depending on your location. Also if you put more current into your supply than is being draw by it then the meter will also spin backwards. eg: overdriving it with a generator.
The purpose of a flow meter is to measure the flow of either air or water. They allow one to measure the total volume of air or liquid flow and the rate of the flow.
A flow meter.
A flow meter.
flow meter
"A flow meter is necessary when dealing with air conditioners, hot water heaters, and any other types of equipment requiring the monitoring of a water or gas flow."
It is called a flow meter well it is certainly called flow meter but its other name is prahvahmapi
This is possibly referring to a double check valve or back flow preventer on your potable water system. The valve prevents potable water from traveling backwards in your water line. Lets say that you are filling a sprayer can with weed killer and your hose is submerged in the sprayer while you are filling it. If your water system was to lose pressure it would be possible for the water in the hose to start traveling backwards and actually suck up the weed killer into the potable water supply. When pressure was restored the contaminated water would now flow through to your sink faucets and possibly to your neighbors faucet also. The back flow valve is usually located in a box below grade next to your water meter. In some states the back flow valve needs to be tested every year. When the back flow valve is tested they actually test the backseat valve to insure it lets no water pass backwards
same thing qs both meaure flow
THE SYMBOL FOR Flow Meter is : FI as Flow Indicator
Reverse their flow