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LPS-M1 Diaphragm-Type Pressure Switch
● Fully welded diaphragm, zero leakage
●Mechanical principle, no power supply required
● High-quality microswitch with minimal dead zone
● The process interface is versatile, and both flanges and threads can be customized.
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Product Description
Product Overview Product overview
"The LPS-M1 series diaphragm pressure switches are manufactured by secondarily filling the basic pressure switch design with oil through a double diaphragm. The wetted parts can be equipped with various diaphragm materials, making them suitable for handling complex operating conditions such as corrosive, viscous, easily crystallizing, or particle-clogging media. Inside the diaphragm, inert oil is used to transmit pressure, ensuring that corrosive substances come into contact only with specially engineered diaphragm materials. The deformation of the diaphragm is transmitted via the oil to the sensor, enabling high, low, high-high, and low-low alarm functions or interlocked control actions. The setpoints are adjustable, and the device requires no separate power supply. Additionally, it features large contact capacity, making it ideal for differential pressure control applications in industries such as petroleum, chemical processing, metallurgy, power generation, sugar production, and pharmaceuticals."
Measurement Principle Principle
A diaphragm-type pressure switch is a mechanical pressure switch that uses the mechanical deformation of a diaphragm to control the closing or opening of electrical contacts. When the pressure of the measured medium changes, the diaphragm undergoes a corresponding displacement. This displacement is then transmitted via a linkage mechanism to a microswitch. Once the displacement reaches a preset value, it actuates the microswitch, causing its contacts to either close or open—thus signaling the pressure level. Adjustable pressure switches allow users to fine-tune the relationship between the linkage mechanism and the microswitch contact travel, enabling precise pressure control at either a fixed value or within a specific range, thereby achieving the desired operational purpose.
Performance Metrics TECHNICAL PARAMETERS
Measurement medium: Gas or liquid (For highly corrosive applications, please confirm beforehand).
Measurement range: 0–40 MPa
Working viscosity: ≤10E3 m²/s
Housing material: Die-cast aluminum, epoxy resin coating, with a sealing gasket on the outer cover
NEMA Protection Rating: Meets NEMA 4X requirements
Set value accuracy: ±0.5%
Repeatability accuracy: <1%
Pressure interface: Standard M20×1.5 external thread or flange; special interfaces available upon request.
Electrical interface: M20×1.5 internal thread; special interfaces available upon request
Switch output: One single-pole double-throw (normally open + normally closed) output;
Switching component: Microswitch
Ambient temperature: -40°C to +70°C
Environmental humidity: 5%–95%
Cycle Life: 1 million cycles
Protection Rating: IP67
Explosion-proof rating: Ex de IIC T6 Gb
Dust Explosion Protection: ExtD A21 IP66 T80℃
Contact capacity: Standard type: 380V, 15A; Explosion-proof type: 380VAC, 5A;
External dimensions APPEARANCE OF SIZE
Installation Requirements INSTALLATION
1. Weld the pressure-tapping pipe, and it’s best to install a shut-off valve on the pipe. Leave threaded connections corresponding to the switch, allowing for easy removal of the switch during maintenance.
2. Install the switch in a location with minimal vibration and temperature fluctuations. An appropriate installation spot can effectively prevent moisture from entering the housing. If the switch will be installed under harsh operating conditions, it must be mounted vertically (with the pressure connector facing downward). Please avoid installing it in environments outside the specified temperature range.
3. Special note: When installing or removing, never directly twist the outer casing to secure or detach the switch. Instead, use a wrench to tighten or loosen the connecting hexagonal (or flat) fitting at the joint.
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