Digital Water Meter - Totalizer and Flow Rate DM Series

Works exactly as advertised. One note is to use teflon tape when attaching the adapters. You do have to open it up and put the batteries in the holder, as more of a commercial item then a consumer item, but not hard to do if you know how to use a screwdriver. I am using it to set landscape watering levels and it is working very well.

I connected this unit to my Birchmeir backpack sprayer to measure jobs that I do. After calibration to the liquid I use, the device seems to be pretty accurate. This will certainly help in the future.

I bought this to measure the flow rate on an open looped geo thermal HVAC unit. Just as I suspected, the flow rate was at 14 GPM. The meter allowed me to reduce the flow rate to 6 GPM where it needs to be. Now I am saving 8 GPM which reduces the work my well pump has to do. Good product. It easily connected to the outflow PVC pipe.

The threaded connections are real tight, however, the plastic material may result is cross-treading the adapters. Overall, it is performing well for us.

I purchased this unit (1/2” version) to measure drip watering for my plants so that I can measure how much liquid fertilizer to add to the water. I was not successful. May be because I purchased a unit with an incorrect measurement range. Sometimes it measures 0.1 pints per minute sometimes 0.2 pints, most of the time it stays at 0.0. So I don’t know if it works, I would like to think it does, especially since it is $150 item. I reached out to customer service, they were polite, but in the end the conversation did end in resolution of my problem and I still don’t know how much water is flowing. Anyway thank you.
RESPONSE FROM FLOWS.COM: We’re sorry this product didn’t work for your application. As you mentioned, it was measuring 0.1 to 0.2 pints/minute at times. When you convert that to Gallons, you’re looking at 0.0125 to 0.025 Gallons per minute. The ½” meter in this series is only going to be accurate between 0.04333-6.583 GPM. When purchasing any meter the most important part of the selection process is to make sure your flow rate meets that meter’s specs. This usually can be done with a “bucket” test (time how long a known amount of water takes to dispense and calculate that out to Gallons Per Minute). If the meter had been defective, it does have a 1 year warranty that we would honor. In addition, if we had a meter that measures that low, we would have been happy to offer a discount on the purchase of another meter.

Leaks, made really cheap for the price.
Response from Flows.Com:
We're sorry you're having an issue with this product. We reached out to you two times to discuss as it does have a 1 year warranty on any defects. Leaking would likely be a valid warranty issue (if it wasn't caused by something outside of what is on the meter's specification sheet ie: max pressure, temperature, etc.).

There is no on/off switch on this. You have to take it apart and remove the batteries each time. Poor engineering.

I recently purchased 2 DM-P-050 flow meters to monitor the flow of fertilizer into my irrigation system. I love the ease of use and the precision. It requires a bit of recalibration since I am using it for fertilizer and not water. Very helpful that the orientation can be changed so I can run them vertical for low flow operations.

I bought this for a low yield well in order to adjust the pumping rate of the well. Simple to install and it has been working perfectly for a week. It has been invaluable in setting the flow restriction valve to reach the desired flow rate. It has also been eye opening to see how much water I am using to irrigate a one-acre yard in the Central Valley of California! I highly recommend it.