Pointer Flow Switch-SN510

-Pipe thread connection 3/4"~21/2’
-Suitable for horizontal and vertical pipes
-Rotating form scale
-1 or 2 flow limit switches
-Measuring system 3 or 5

-Flange connection DN15~DN50/65 (1/2‘~21/2’)
-Applicable to horizontal and vertical pipelines
-Rotary form scale
-1 or 2 flow limit switches
-Measuring system 3 or 5

-Flange connection DN80~DN200(3‘~8’)
-Applicable to horizontal and vertical pipelines
-Rotary form scale
-1 or 2 flow limit switches
-Measuring system 7
Adopting conical measuring tube and measuring target, when the fluid passes along the conical tube, the measuring target generates displacement according to the size of the flow rate, the displacement of the measuring target is balanced by the action of spring balancing force, which is transmitted to the indication system through the magnetic coupling system to realise the monitoring and control of the flow rate.

Indicator for flow switches (see figure on the right).
The corresponding measuring ranges are divided into L/h, L/min and m²/h dials, and the circular dial and rotating pointer allow easy observation of the flow rate.
The most important feature of the indicator is that the switching alarm point can be easily adjusted without interrupting the flow in the pipeline.

1. The flow switch should first be cleaned of impurities, welding slag, debris, and dirty items in the pipeline before installation, and compressed air blowing and clean water flushing are recommended.
2. Please pay attention to the fluid flow direction marked on the instrument case, the arrow is the outflow direction.
3. It is recommended to install a straight pipe section equivalent to 5 times of the calibre at the inlet and outlet to ensure the measurement accuracy.

1. The flow switch has been debugged and calibrated at the manufacturer's factory before leaving the factory, and has been inspected and qualified by a full-time inspector.
2. When using the flow switch for the first time or in the future; please open the inlet valve gently and slowly to avoid damaging the flow switch.
3. The switching point of the flow switch can be adjusted in the full flow range, which can be adjusted without cutting off the water flow.
4. Indicator commissioning: open the shell, according to the desired flow value alarm point, keep the flow at the flow point, then loosen the adjusting screws with a tool, carefully adjust the alarm
switch position, so that the alarm switch in the flow point to produce action.
5. After adjusting the alarm switch, tighten the adjusting screws, and finally tighten the instrument case.

Under normal conditions, the flow switch can be free of maintenance and repair. If there are impurities, granular substances or suspended matter in the fluid, it will block the measuring body of the flow switch, and the above phenomena should be removed and cleaned in time.
The above phenomena should be removed and cleaned up in time, and then in the process of cleaning up, you should be careful not to damage the internal parts of the flow switch, in order to ensure the normal operation of the flow switch.
In case of malfunction that cannot be handled on site, please do not dismantle it easily. It is recommended that you send the flow switch back to the manufacturer for inspection and repair. Please follow the following procedure
On-site processing.
1. Measurement without indication; first check whether there are impurities, granular substances or suspended matters that may block the measuring body of the flow switch, remove the impurities and return to normal.
2. The flow rate is sometimes there, sometimes not; first check whether there is damage to the measuring element, if there is damage, please contact with the manufacturer.
3. Measurement inaccuracy; first check whether the flute element is damaged, if there is damage, please contact with the manufacturer.
4. Leakage occurs; first check whether the seal is intact, the biggest possibility is that the O-ring of the seal is damaged, please replace it in time.