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液位传感器

液位感应时需要物理触点吗?

No, using a reed level sensor a magnet is mounted in a float that is physically isolated from a reed switch that is usually mounted to a PCB in an isolated area, usually in the sensor stem.

制作干簧液位传感器需要哪些元件?

Essentially a reed switch is required to sense the position of a magnet.  The magnet is usually mounted to a float mechanism that moves with the changing level of a fluid.

干簧液位传感器如何封装?

干簧液位传感器一般采用塑封,然后由坚固的环氧树脂进行密封。

干簧液位传感器抽拉功率吗?

Reed level sensors use reed switches as their switch sensing mechanism.  In the off state there is no physical contact, so no current flows for as long as  the contacts are open, which can be weeks, months, or years.  When the contacts close they will switch on the appropriate circuitry carrying out the switching function.

液位传感器可提供多种切换配置吗?

干簧液位传感器提供多点常开触点。它们还可以提供单点或多点常闭触点,以及一个单刀双掷(SPDT)触点。

液位传感器的导杆上可以安装多少个感应点?

Literally 100s of sensing points are possible. Reed switches can be mounted as close together as possible and can be mounted on long printed circuit boards that can be several meters long.

How many floats can be mounted on a stem for several trip points?

Standex Electronics has developed the LS04 series plastic level sensors with up to six floats on one stem.  The stainless steel LS05 series can be as long as 2000mm and have any number of floats spaced at a minimum of 1.5″ apart.  Standex Electronics engineers are always available for special design configurations

办公电子产品哪些地方可以使用干簧液位传感器?

干簧液位传感器主要用于咖啡机,复印机,空调,加湿器,水净化器,超声波清洗机,油浴测试仪器,等等。

在家电和电子产品行哪些地方可以使用干簧液位传感器?

干簧传感器用于加湿器,水清洁剂,地毯清洁剂,火炉,空调,太阳能系统。暖风机,桑拿,洗碗机,卫生间,等等。

工业机械上哪些地方可以使用干簧液位传感器?

The reed level sensors are used in factory liquid level sensing, water seal float, oil level for transformers, air leak valve for waterworks, boiler control, auto-drain for pneumatic filter, lubricating units, generators, gasoline fuel dispensers, and more.

干簧液位传感器应用于汽车的哪些位置?

干簧液位传感器用于检测燃油液位,制动液液位,发动机油液位以及挡风玻璃洗涤液位。

在汽油环境下,为了避免更改浮子属性,最佳材质是什么?

NBR (nitrile butadiene rubber) absorbs the least amount of liquid when immersed in oil, gasoline, alcohol, toluene, and benzene.  It absorbs less them 0.5% of the fluid minimizing any float level inaccuracies.

在最低和最高温度环境下最佳浮子材质是什么?

采用NBR材质(丁腈橡胶),浮子可在温度低至-50℃和高至180℃使用。

液位传感器有哪些安装选项?

Reed level sensors can be mounted vertically from the top or bottom of a vessel containing the liquid.  Also, the sensors can be mounted on the side of the vessel as well.  All the sensors can be mounted with their hardware either internal or external.

同一个液位传感器能否检测两种不同液体?

You can measure two different liquids particularly when they have different specific gravities.  For example oil and water are two such liquids.  If the liquids are sitting together only one stem is needed.  The two floats having the proper float requirements (specific gravities),  will ride up and down for the given liquid.  Separate reed switches for each liquid within the stem, will supply the proper actuation.

NBR是什么?

NBR is a form of plastic material and stands for nitrile butadiene rubber.  Standex Electronics uses it as a float material.  It is excellent in its resistance to oil and fuel and withstands high temperatures very well.

在高温情况下检测液位时,干簧传感器使用什么材质?

在高温情况下使用不锈钢封装浮子和液位传感器。

检测食品业液位时使用什么干簧传感器材质?

检测水质产品和食品业液位时,使用聚乙烯材质。

在检测油,汽油和制动液液位时最理想的干簧传感器材质是什么?

PA聚酰胺是汽油类产品的最佳材料。

干簧液位传感器工作原理是什么?

The reed level sensors come in all different packages, but each sensor includes a housing that incorporates the reed switch and any circuitry along with wires to make the electrical connections to an external circuit.  Also included is a float that contains a permanent magnet.  The float can be part of the housing where it would ride up and down along the extension or stem of the housing.  Floats can also be completely separate from the housing giving complete versatility to the sensor.  When the float is in proximity to the reed switch, the contacts will sense the magnetic force closing the contacts.

液位传感器中哪项技术最好?

Generally each technology has its pros and cons:

  1. Mechanical sensors are the least expensive but their subject to environmental conditions and generally fail earlier than the other technologies.
  2. Inductive sensors sense changes in inductance and capacitance to determine a given level.  These are probably the most expensive.
  3. Hall and electronic sensors do a good job, but both need extra circuitry.  So the initial investment of the sensor needs to be evaluated in conjunction with the other circuitry to determine the total cost.  Also they draw power continuously, and they can be sensitive to some environmental extremes.
  4. The reed sensor requires no extra circuitry and uses no power in its off state.  The designs are very flexible and because the reed switch is hermetically sealed they can be used in almost any harsh environment.
液位传感器中使用哪些技术?

There are several technologies competing in the liquid level sensing market: primarily they are mechanical sensors, hall sensors, inductive sensors, and electronic sensors.

什么是液位传感器?

A liquid level sensor basically senses changes in the level of a fluid.  It can be used to sense low level or high level points, and of course any point in between.

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