The new ammeter is on the market, 20A direct measurement, without shunt
Ultra high cost performance and convenient wiring
Product indicators:
Weight: 30g / piece
Opening size: 45mm * 26mm
Overall dimension: 48mm * 29mm * 22mm
Power supply voltage: connect dc4-30v2 line (do not over-voltage the power supply, otherwise it will burn out)
Display mode: 3-bit 0.56led nixie tube
Display color: Red / Blue / Green
Refresh speed: About 500ms / time
Measurement accuracy: ± (1% + 2 words)
Wiring length: 14cm
Resolution: 0.1A
Range of ammeter: 0.0-20.0a (please use within the range)
The ammeter measures the negative line current, only the positive current, but not the negative current.
特别注意:(请仔细按照说明接线,否则烧坏后果自负)
•本电流表的供电端与测量端的地线采用共地设计,也就是说,供电电源的地线与测试端的地线是相通的,所以电流表的测试端只能串在用电器之后(既被测设备的负极与被测设备电源的负极之间)
•建议表头供电端采用单独隔离供电
接线示意图:
电流表用隔离电源供电连接图
如电动车控制器或者同一电源的非隔离降压模块转换出来的供电电源线,一条细黑线悬空即可!
电流表在测量中取电中连接图(4-30V范围内)