Low pressure switch adopts diaphragm sensor. The setting value of the controller is adjustable, and the adjustment range is -16KPa—2.5Mpa.
The Low pressure switch can be used for neutral gases such as air and liquid media such as water, hydraulic oil, lubricating oil, and light fuel oil. Low-pressure pressure switches are widely used in automobiles, water purifiers, power development and other fields. These fields are mainly used in low-voltage protection switches for automobiles, low-voltage switch appliances for power equipment, and low-voltage control switches used in pressure systems.
Sino-Inst offers a variety of Pressure Switches for pressure control. If you have any questions, please contact our sales engineers.
Features of low pressure switch
- Mechanical switch, no need for power supply, easy to use
- There are normally open and normally closed contacts
- Adjustable pressure alarm point
- Suitable for occasions with explosion-proof requirements
- Easy to use, stable work and long mechanical life
Specifications of low pressure switch
| Working parameters | normal type | Explosion-proof |
| Working viscosity | ＜1×10-3m2/s | ＜1×10-3m2/s |
| Switching element | Micro Switch | Sealed switch |
| Explosion-proof grade | / | Exed II CT4~T6 |
| Enclosure rating | IP65 | IP54 |
| Ambient temperature | -20℃~50℃ | -20℃~50℃ |
| Medium temperature | 0~120℃ | 0~120℃ |
| Installation location | / | Pressure vertically downward |
| Vibration resistance | ZNC-Y500: 40m/s² | Max. 20m/s² |
| Repeatability error | ≤1.5% | ≤1.5% |
| Contact rating | AC 220V, 6A (resistive) | DC 250V, 0.25A (resistive), 60W max. AC 250V, 5A (resistive), 1250VA max. |
Set value reference table
| No. | Corresponding setting value adjustment range | Pressure | Corresponding dimensions | ||
| B | K | W | |||
| 1 | 0~2.5 (Kpa) | 0~2.5 (Kpa) | -16~0 (Kpa) | 50(Kpa) |
Normal: 01 Explosion-proof: 04 |
| 2 | 0~6 (Kpa) | 0~6 (Kpa) | -10~0 (Kpa) | ||
| 3 | 0~16 (Kpa) | 0~16 (Kpa) | -6~0 (Kpa) | ||
| 4 | 0~25 (Kpa) | 0~25 (Kpa) | -2.5~0 (Kpa) | ||
| 5 | 0.005~0.06 (Mpa) | 0.005~0.06 (Mpa) | -1.6~0 (Kpa) | 1.5(Mpa) |
Normal: 02 Explosion-proof: 05 |
| 6 | 0.005~0.1 (Mpa) | 0.005~0.1 (Mpa) | 0~0.6 (Kpa) | ||
| 7 | 0.005~0.16 (Mpa) | 0.005~0.16 (Mpa) | 0~1.1 (Kpa) | ||
| 8 | 0.005~0.25 (Mpa) | 0.005~0.25 (Mpa) | 0~1.6 (Kpa) | ||
| 9 | 0.03~0.4 (Mpa) | 0.03~0.4 (Mpa) | 4(Mpa) |
Normal: 03 Explosion-proof: 06 | |
| 10 | 0.03~0.6 (Mpa) | 0.03~0.6 (Mpa) | |||
| 11 | 0.05~1 (Mpa) | 0.05~1 (Mpa) | |||
| 12 | 0.1~1.6 (Mpa) | 0.1~1.6 (Mpa) | 5(Mpa) | ||
| 13 | 0.1~2.5 (Mpa) | 0.1~2.5 (Mpa) | |||
Remarks: ① The meaning of the pressure resistance value: even a short pressure peak cannot exceed this value.
② The corresponding external dimensions of the W-type controller are unified as ordinary: 01, explosion-proof: 04.
You may like: Explosion Proof Pressure Transmitter for Hazardous locations
Working principle of low pressure switch
When the system pressure and the rated pressure are too high or too low, the disc in the sensor will move instantaneously. Thereby, the switch joint is pushed on or off by the connected guide rod.
In short, it is compared with the rated value through the test situation of the measured pressure. When there is a change, a working effect will be produced, and the free end of the elastic element will be displaced. Push the switching element directly or after comparison. Change the on-off state of the switching element to achieve the purpose of controlling the measured pressure.
The commonly used components of pressure switches mainly include four categories: diaphragm, diaphragm, single coil spring tube and bellows.
Extended reading: Miniature Pressure Switch
The role of low pressure switch
Because pressure switches have relatively high accuracy and stable performance, low-pressure pressure switches are widely used in automobiles, water purifiers, power development and other fields. These fields are mainly applied to low-voltage protection switches of automobiles, low-voltage switch appliances of power equipment, and low-voltage control switches used in pressure systems.
Among them, in the automotive field, it means that when the voltage provided by the car to the on-board power supply is lower than how much, the power supply will automatically shut down to achieve a protection function. As a commonly used electrical component, low-voltage car switches can prevent damage to the power supply equipment of the car and ensure the normal ignition of the car.
The low-pressure switch in the pressure system achieves the working effect according to the water supply pressure of the entire system. It is mainly to cut off the entire circuit when there is no water or the pressure is too small to achieve the purpose of protecting the water pump.
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吴鹏出生于1980年，是一位备受尊敬且成就卓著的男性工程师，在自动化领域拥有丰富的经验。凭借20多年的行业经验，吴鹏在学术和工程领域都做出了卓越的贡献。
在其职业生涯中，吴鹏参与了许多国内外工程项目。他最著名的项目包括炼油厂智能控制系统的开发、石化厂尖端分布式控制系统的设计以及天然气管道控制算法的优化。
Low Pressure Switch for Sale | Adjustable | -16KPa-2.5Mpa
Low pressure switch adopts diaphragm sensor. The setting value of the controller is adjustable, and the adjustment range is -16KPa—2.5Mpa.
Product SKU: Low Pressure Switch Y-500
Product Brand: Sino-Inst
Product Currency: USD
Product Price: 30
Price Valid Until: 2059-9-30
Product In-Stock: InStock
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