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0.28-inch ultra-small digital DC voltmeter head, digital display, adjustable three-wire DC0-100V battery voltmeter
Link to the original
Price
0.4 $
0.4 $
Article
535405041883
Characteristics
- brand 0.28-inch voltmeter
- model 0.28-inch voltmeter
- sort by color Red three-wire measuring range 0-100V, yellow three-wire measuring range 0-100V, green three-wire measuring range 0-100V, blue three-wire measuring range 0-100V, red two-wire measuring range 2.5-30V, yellow two-wire measuring range 2.5-30V, green two-wire measuring range 2.5-30V, blue Two-wire measuring range 2.5-30V
- Working Principle DC voltmeter
- Power supply circuit DC ammeter
- Item number 0.28-inch voltmeter
- Ammeter type Voltage display
- Decoration and construction content Hydropower engineering
Seller 深圳市科展伟业电子企业店
- Name 深圳市科展伟业电子企业店
- Shop 深圳市科展伟业电子
- Located 广东深圳
- Reviews 0
- Positive 0
- Evaluation of score 4.92
- Evaluation of goods 4.92
- Evaluation of services 4.93
- 100 — 1999 шт 5000$ per piece.
- 2000 — 50119 шт 4000$ per piece.
- 50120+ шт 3000$ per piece.
Available 200 pcs.
0.4
$
+ Shipping in China
0.29$
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Delivery from China to Ukraine, Uzbekistan, European and African countries
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Photo and product description
使用前，一定要分清耐压和接线方式，我们出厂前全部测试过！
3线不建议改2线并用，容易烧，烧了不负责！
测12V的电压表请推荐二线，不要用三线来并成二线来使用。
很多客户买了3线然后黄色红色合并一起接正极，是改为二线。改为二线后测量范围变小，并且非专业人员，会出现接线不良情况，所以不建议这样使用，烧坏不显示不负责！
请看好描述再拍！
三线中的黄色线，接被测电源正极，
3线测量范围是0-100V必须接外部电源供电。
三线的供电电压不要超过40v！
>10V时误差正负0.2V <10V时正负0.03V 调节可调电阻，精度 可达百分百。
二线抗阻是32千欧，三线100千欧
这个消耗电流非常小一般10-15ma
用于电瓶车，电动车推荐购买0.56二线5-120V ：https://item.taobao.com/item.htm?spm=a2oq0.12575281.0.0.26cb1debmf9ZeH&ft=t&id=537666544695
使用电源不得高于40V，使用时要注意给表留足够的余量，避免因电机火花，电流纹波或者其它过高突变电压，这些会对电压表造成损坏。
两线跟三线有什么区别？
回答：
1，三线和二线主要区别是测量范围不一样，二线测量范围2.5-32V，三线测量范围0-100V, 三线可以根据客人要求订制测量范围。
2， 二是二者的测量方法不同：二线直接接线测量，三线需要外部供电才能测量。
