The easiest and best way to test your calibration is to fill up a known container. First you reset your batch total to zero. Then you start your flow and fill up a known container. If you filled up a 5 gallon container then your display should read 5.00 gallons
In general you can expect a turbine meter to keep counting below its minimum range, but it will lose some of its accuracy. Normally it will completely stop at ½ of its published minimum flow. For example a ½ in. meter that reads between 1 and 10 GPM will be able to stretch down to around ½ of a gallon per minute. Keep in mind that nothing below the published minimum flow is guaranteed, and not all turbines will give this much extra performance.
Turbine meters can not tell the difference between air and liquid. It just knows the turbine is spinning, so any reading will be inaccurate if air is going through the turbine. Another reason to not put air through a turbine is potential damage. The air will make it spin extra fast, with no liquid for lubrication damage can occur. When the liquid gets there it can hit the turbine like a hammer. It is recommended to slowly bleed the air out of the lines then reset the meter total.
You want to take the diameter of the meter times 10 on the inlet and times 5 on the outlet. For a 1 in. meter this would be 10 in. of straight 1 ft pipe going in and 5 in. of straight 1 ft pipe coming out. If you cannot do this you will not make the meter worthless, but you cut into the accuracy.
If your meter says FAC or PRESET in the top right corner, then it is in the factory calibration mode and is set for water and water-like fluids.
The G Series, G2 Series and A1 Series Meters all come with a calibration report. This report is the data of the output of the meter at several flowrate points and will meet or exceed the advertised accuracy of the meter over the recommended flow range. This report should not be confused with a calibration certificate. (If a certificate is needed, request one from GPI.)
Yes, there is a NIST certificate available upon request for the G Series, G2 Series, A1 Series and TM Series Meters.
The current version of the display on FLOMEC meters has a new processor that uses much less power. This has given us the ability to let the display stay on 100% of the time. The best advantage gained from this change is the greatly extended battery life. The batteries will now last approximately five years.
Yes, you can take the display off of the 01, TM, A1 and G2 series meters and rotate them 180 degrees. Remove the (4) Phillips head screws from the displays, then remove the display (there will be no leaks). Rotate the display 180 degrees and reattach.
Yes, you can purchase a FM Approved Remote Kit (part # 113275-1). You can take the existing display off of your TM, A1 or G2 series meters, and put the remote kit in its place. At the other end of the remote kit is a box that is designed to be panel mounted. The existing display can then be installed on the remote box.