Before the water meter, where does the water meter refer to the end of the water meter?
Compound water meterDouble water meter, commonly known as mother and child water meters, consists of large caliber water meter (mother meter), small caliber water meter (Zi Biao), flow conversion valve organic composition. The parent table located in the main channel and main channel of water metering; sub table setting other auxiliary channel, metering bypass flow water; flow switch valve according to the size of the flow meter through the automatic control of the water flows through the sub table or at the same time through the parent table, with less water, flow conversion valve is in the closed state, sub meter; flow rate exceeds a certain value (qx2), flow conversion valve open, mother meter; flow decreased to a certain value (qx1), flow changeover valve closed.So, through the automatic control flow conversion valve, play a large and small water meter function, so the range ratio of 1500 to 2400 times, 25 times, far higher than the ordinary water level of 67 times the level of B, is the largest of all water meter.
The number you didn't use was just before the water meterWhen you start using it, it's the water meterThe user is responsible after the watch
Jump type water meterRead only valid values for four bit black words. Other pointers are used only as water meters for inspection, and users do not have to read them.
The section of water flowing into the meter is the front end of the water meter, and the section out of the meter is the back end of the water meter.
