product overview Product overview

The LPS-F2 series diaphragm negative pressure switch adopts a fully welded stainless steel diaphragm structure, which is designed to be simple and easy to use, with few fault points, and can effectively prevent liquid leakage and misoperation; Mainly used in vacuum control applications, the set value can be adjusted, no separate power supply is required, and the contact capacity is large, which greatly facilitates on-site application for users. It is widely used in various industries such as petroleum, chemical, metallurgy, power, sugar, and pharmaceuticals that require negative pressure control.

measuring principle principle

Diaphragm pressure switch is a mechanical pressure switch that uses the mechanical deformation of the diaphragm to achieve the function of controlling contact closure and disconnection. When the pressure of the measuring medium changes, the diaphragm will produce corresponding displacement. The displacement of the diaphragm is transmitted to the micro switch through the transmission component. When the displacement stroke reaches the set value, the micro switch will be pushed, causing the contacts of the micro switch to close or open as a state variable. Adjustable pressure switches can control pressure within a fixed value or range by adjusting the stroke relationship between transmission components and micro switch contacts, in order to achieve control objectives.

performance index TECHNICAL PARAMETERS

Measurement medium: gas or liquid (in highly corrosive environments, communication is required)
Measurement range:- 100-0kpa
Shell material: die cast aluminum, epoxy resin coating, outer cover with sealing gasket
NEMA protection level: meets NEMA 4X requirements
Set value accuracy: ± 0.5%
Repeatability accuracy:< 1%
Pressure interface: standard 1/2NPTF internal thread, M20 * 1.5 external thread; Special interfaces can be customized
Electrical interface: M20 * 1.5 internal thread; Special interfaces can be customized
Switch output: a single pole double throw (normally open+normally closed) output;
Environmental temperature:- 40℃～+70℃
Environmental humidity: 5% to 95%
Cycle life: 1 million cycles
Protection level: IP67
Explosion proof rating: Exde IIC T6 Gb
Dust explosion-proof: ExtD A21 IP66 T80 ℃;
Contact capacity: Conventional type: 380V, 15A; Explosion proof type: 380VAC, 5A;

External dimensions APPEARANCE OF SIZE

Preparing materials

INSTALLATION REQUIREMENTS INSTALLATION

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