DIGITEN Water Liquid Flow Capacity Volume Digital Display Flow Meter Controller Counter Liter Gallon

先ずは動画の説明から。 50Lで水が止まるように設定してスタート。 ディスプレイの一番上の数字が総量ですが、46L過ぎでいきなり50Lの表示になりストップ。 このような症状がかなりの頻度で起こります。 実は、最初この商品を他のショップで購入したのですが、メーカーに動画を添えて返品を申し入れたのですが、シミュレートすると言った切何の連絡もなしです。 最初に買った個体の不良も考えられるので、返品のしやすいAmazonさんで、もう一つ買ってみましたが、同じ症状が出ます。もちろん返品しました。 メーカーは不良を認識していると思います。 同じ機能の商品が、別のメーカーからも出ています。そちらを試してみます。

現場で透水の状況を試験するための流量計として購入。マニュアルは英語だけどなんとなくわかります。取り扱いは簡単で、私は同じメーカーの0-30ホールセンサー式流量センサーを一緒に購入。キャリブレーション等はないけど実際の流量と計測値を比較。実際のものより流量計は約1％少なく表示されていたが 誤差範囲内と思われます。この価格で小数点2桁の流量計は十分ではないでしょうか。（カウントは0.12～0.13くらいずつ上がるので実質表示は小数点1桁と考えたほうが無難。

after setting the K factor ( constant needed for the sensor) and verifying the proper volume reading this meter works perfectly. I use it on my radiant concrete floor "electric boiler" to check and set flow in each circuit. Even though I have flow valves, checking flow with this type meter is much more accurate and quicker. My resulting floor temperatures are identical and the flow matches the engineering calculations. I didn't realize it comes with a flow sensor (lets the boiler know there is water moving in the system and also a temperature sensor. Very good and complete product that works!

Works great. Very accurate. Illuminated backlit screen

Use a water valve to control your flow if you want small amounts. Once you set the k valve 13L every time.

Setup with the linked solenoid and flow sensor. When I pressed run/start the unit would shutoff which then burnt out the circuit board. Think is more an issue with the solenoid that was supplied. It looks cheap. I will need another controller so hopefully doesn’t happen again

I've adapted this unit paired with a Gredia GR-201 1/2" flow sensor to monitor flow rate thru a UV sterilizer. The sterilizer I have requires a flow at 37 GPH optimum and 60 GPH max to be effective eradicating protozoa. Out of the box the pairing of the meter and sensor was way off reporting 16 GPH while a had a gate valve nearly closed. So to calibrate it, the meter has a K-factor value that has to be adjusted to the sensor you pair it with. The default was a K-factor value of 1.98. I did a Google Bard search for what the sensors K-factor should be... 11.45. I set the meters K-factor to that. It was much closer but not accurate. I adjusted my valve until the meter was reading 1 GPH of flow. I set up a bucket to divert the water exiting the system into so I could measure the amount dispensed in a minute. I recorded .453 gal. with the K- 11.45. Now a little math, a divide the current K- (11.45) by the flow it produced (0.453) while the valve restricted flow with the meter reading 1 GPM. The resulting new K-factor of 25.27 work precisely. Well as precise as using a large measuring cup to measure the amount of water dispensed. I re-ran the test, I got 1 gallon at the 1 minute mark, 3 gal at 3 minutes. The one annoying thing about the meter is the backlit display goes dark after 15 seconds. Annoying during the calibration when your hands are busy turning on/off a pump and a timer. But in actual use I'll only be using this to set the gate valve position and the backlighting won't so much be an issue. I hope this helps those trying to get a more accurate reading.