Calibration device is made of working platform, clamping device,
the front and end straight pipe, flow measurement or drain valve
When the intake of the calibration device is connected with stable
pressure source, water will flow into the water meter and then into
standard measuring instrument.
Compare the values between the water meter and measuring
instrument, so as to know the indication error.
3, technical index: for performance test (using in the production)
4, Discharge flow instruction: use float-type flow-meter ,the
precision is less than 2.5%
5,the volume of measurement 15-25mm,(10L+10L)20L,(50L+50L)100L;
7,the distance of chucking system : 15-25mm. Calibration device is
500mm,15-50mm, Calibration device is 60mm.
8,The range of measurement is 1 liter water. And the rising height
is better than the standard regulation of water meter
1. Clamp the water meter into the front and end of straight pipe or
the center of pipe. Close the all control valve and open the inlet
valve, to make water meter and pipe fill with pressure, in that
case, there is no leaking water any more .
2, Open the control valve, and open the control valve again to let
air out, which can make the water meter turn and then the pointer
point at the zero or other degrees. Close the cyclic type
regulating valve and record the graduation .Then let the water out,
The time is one minute about 10L,20L,100L,300L,.And then close the
drain valve, that is standard measurement of zero. Operate the
drain value to some points and pour into the measurement. When the
pointer arrives at graduation, or a set value. Close the cyclic
type regulating, it is less than 1.5 seconds. When the water level
is still, record the water quantity and the water quantity of
standard measuring instrument. Compare them.
3, starting flow verification Open the cyclic type regulating valve
of the rotameter 4-90L/ slowly , at this time, the float will rise
through the float of the water meter. When you notice the value is
smallest, that is the practical float.
4, to make the water meter have common data, you had better use
Installation and adjustment
1, the device of installation and calibration device should be
placed at the draughty place with good light.
2. Put the standard measuring instrument on the ground, adjust
plate level well. The platform should be installed in the front of
the instrument. Fix the measurement and working platform.
3, Connect well with the inlet pipe, and copper tube with two
position four-way valve to make sure all joints will not be
4, if the rotameter is not well, adjust it and make it vertical.
5, It must have enough space when installed, which is convenient
for using and mending.
Maintenance and attention
1, the seal element of two position four-way valve, clamping device
and drain mechanism is fuel-resistant rubber “0”.If the water is
leaking in it, it should be replaced right away.
2, If the water gauge glass and glass rotameter is be used for a
long time, the inner will have rust, which is bad for reading .If
you wash it with oxalic acid, it will be new.
3, all kinds of valve is leaking, it can be replaced with sealing
packing or valve
4, when using the rotameter, open the cyclic type regulating valve
slowly. Don’t break the glass pipe. Pay attention to the rotameter
5, the inside of rotameter should be clean, so as to be frozen