Zero Power Magnetic Sensor (WG214) , Water Meter, Flowmeter, Heat Meter, Energy Meter, Gas Meter, Liquid Level Sensor

Basic Info.

Model NO.	WG214
IP Rating	IP65
Certification	RoHS
Customized	Non-Customized
Theory	Magnetic Sensor
Output	Pulse Signal
Transport Package	Carton
Specification	ROHS, REACH
Trademark	AHNJ
Origin	Nanjing, China
HS Code	85423100
Production Capacity	100, 000, 000PCS/Year

Packaging & Delivery

Package Size 14.00cm * 8.00cm * 4.00cm Package Gross Weight 0.500kg

Product Description

Features
No need the power supply when it works.Bipolar excitation working mode, the sensor outputs a pair of positive and negative electrical pulse signal when the magnetic field polarity changes for a circle.
Only when the external magnetic field polarity changes, magnetic strength reaches the excitation threshold, the sensor will outputs a pulse signal, so the vibration won't happen. The operation is stable and reliable.
The signal amplitude has nothing to do with the magnetic field changing speed, and it can work at the speed near to zero.
The signal processing is simple, and it can be directly connected with transistors, comparators, A/D converter, etc.
The output signal can be remote transmitted by the signal lines, it's suitable for LAN management.
No mechanic contact, no spark, is a kind of intrinsic safety devices.
Wide operating temperature range, strong environmental adaptability.
Performance Index

Name		Symbol	Value	Unit
Excitation strength	Min.	B	3	mT
	Typ.		5~6
	Max.		12
Pulse signal amplitude		Vo	≥1.5	V
Pulse width(in the location of 1V)		τ	10~30	μS
DC internal resistance		Ro	650~850	Ω
Operating frequency	Min.	f	unlimited	kHz
	Max.		10
Operating Temp.		T	-40~+125	ºC
Outline Dimension and Typical installation location		-	See the figure	-
Sensitive silk location		D	2.5(distance to the bottom)	mm
Package		-	Aluminum shell, Epoxy potting	-
External lead		-	Resistance to high temperature soft wire	-

Sensor dimension and sensitive silk location

InstructionIn the water meter application, the magnetic ring of φ9.5×φ6.0×3.5 mm can be used, it is magnetized in axial direction, a pair of poles. The surface magnetic strength is more than 90 mT, the installation distance from the surface of ring to the bottom of the sensor is about 2.5mm.
Note: The sensor has certain requirements to the magnetic strength, too strong or too weak magnetic field may affect its operation.(See the excitation strength on "Performance index" )
If using other material and shape of the magnet, it needs to measure its magnetic field, and adjust the installation distance.