Informatie (ENG)

This is a 1/2" inch size water flow sensor made by rotor assembly and the Hall sensor. Can be fixed with 1/2" pipe and mounted at the inlet end of the heater, for detecting a water flow, when the flow of water through the rotor assembly, and the speed of rotation of the rotor with a magnetic flow change, a pulse signal corresponding to the Hall sensor output, the feedback to the controller, the control is to determine the size of the water flow regulation. 

Specs:
Red VCC, black GND, yellow frequency signal type

Signal type: NPN square frequency

Voltage supply: less than 24VDC, current use 15mA (can not be over 10ma when 5VDC)

Size 54(Length)*25(1/2”) mm

Very rigid plastic, quality is good.

impeller has embedded metal ball to against wearable

sealed side can prevent water leakage into the circuit.

High quality internal hall sensor, glue sealed to against wearable

Withstand pressure: 1.75Mpa, temperature and humanity range: ≤80℃ and 35%～90%RH

Calculation:
Sensing range: 1-30L/min, 300 pulse = 1 liter water. Frequency, pulse number = F=5*Q(L/Min)*T-3 in which Q is the unit flow volume, liter per meter, T is the time, 5 and 3 is the constant value for example, 5 * 1 liter * 60 sec – 3 =300 pulse precision is ±2%