| 原产国/地区 | 美国 |
|---|---|
| 是否进口 | 是 |
| 订货号 | 1640-0 |
| 类型 | 机械压力开关 |
| 额定电压 | 250 |
| 额定电流 | 1.5 |
| 机械寿命 | 100 |
| 最大工作压力 | 2500 |
| 产品认证 | ce |
| 货号 | 1640-0 |
| 3C额定电压范围 | 36V及以下 |
| 主要下游平台 | 独立站 |
| 主要销售地区 | 北美,东南亚 |
| 是否跨境货源 | 是 |
| 规格 | 1640-0 |
| 品牌 | Dwyer德威尔 |
| 型号 | 3000MR-00 |
| 加工定制 | 是 |
The unique electric switch design in the Series 1640 is another Dwyer Instrument, Inc. innovation. The Dwyer? Series 1640 Differential Pressure Switch resembles the Series 1630 switches. However, the Series 1640 is equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch.As the diaphragm moves in response to pressure changes, it moves the floating contact to cause switching action at two preset points with no switching action between these points. The "high" circuit will be closed when rising pressure differential reaches the preset level. The "low" circuit will be closed when falling pressure differential reaches the preset level.
A typical example of usage is to position motorized dampers when static pressure in a duct system reaches a desired maximum and reposition the dampers when the static pressure falls to a pre-established minimum. By using a Pitot tube sensing element the Series 1640 switch can serve in the same way to control air velocity and maintain a constant volume of air in a supply duct.