Ⅰ Summarize
PCBA metering sensor is based on the unique metering chip WF8002. The coils are integrated into PCB board , it used to detect the number of turns with half-moon metal plate rotor which is below PCBA in right distance parallelly. (as PIC 1)，it is widely applied in smart water meter/smart gas meter industries.Unique Algorithm/anti-magnetic/low power consumption/durable/reliable/compact/customizable are the features of PCBA count sensor.
PIC 1 The principle of PCBA count sensor
Ⅱ Main Features
Item | Residential water meter | Commercial water meter |
Type | V23050 | |
Pulse output mode | OC/TTL | |
Pulse width | 64ms | |
Metering Mode | Forward and Reverse | |
Work Voltage | 3.0V~3.6V | |
Work temp. | - 15~55℃ | |
Static power | ＜4μA | ＜11μA |
Working power | ＜6μA | ＜20μA |
Stable detect distance | Less than 10 mm | |
Max. Speed | 2.2 turns/sec. | 10 turns/sec. |
Storage temp. | -40℃~ +90℃ | |
Storage humidity | 5%~95%RH | |
Other | Sensor structure size is customizable | |
(1)Signal output mode
This inductive sensor offers TTL(default)/OC output mode,other mode could be customized.
(2)Power Supply
It is external power supply,rated voltage: 3.0V~3.6V.The higher power supply voltage is, the longer detect distance would be.
The power consumption when PCBA sensor works.
The longest stable work distance between 304S/S rotor and PCBA sensor. Diameter 16mm、0.2mm thickness is the normal size of 304S/S rotor.The bigger diameter of 304S/S rotor is, the farther detect distance could be.
Rotor and PCB sensor’s flat must be concentric and parallel on a stable holder.
Ⅲ Function of PCBA sensor
(1) Signal intensity value output, to indicate the distance from PCBA sensor to S/S rotator in water meter.--READ from “T” pin
⚫convenient to keep consistency in production and testing
⚫used to confirm installation in expected place
(2) Accumulated pulses output(forward pulses and reverse pulses)--READ from “T”
⚫easy to judge the step(sync) issues between PCBA sensor and Main control board
⚫Completely anti-magnetic（overcome 10,000 Gs magnetic ）
(4) Strong performance in anti-electromagnetic interference
⚫ implement unique anti-electromagnetic algorithm
Ⅳ Interface Specification
4.1 Interface View
4.1.2 Interface explanation
No. | Mark / Pin | Interface Definition |
1 | - | Ground for Vcc |
2 | + | Positive pole for Vcc |
3 | P / P1 | Forward running pulse output |
4 | D / P2 | Reverse running pulse output |
5 | T | Control pin which is connected with main control board |
Ⅴ Structure size of PCBA sensor
PIC 4 Structure Size
Vertical Cut Size (xx±0.5mm)，Horizontal-Size(xx±0.2mm)
Contact Person:Jing Yapeng WhatsApp/Wechat: +86 136 1650 5123 Jing@hangzhouweifeng.cn
