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PML-PPL – Diaphragm Piston adjustable pressure switches intrinsic safety execution

The PML-PPL adjustable pressure switch is engineered for industrial environments requiring intrinsic safety and precise pressure monitoring. Designed with diaphragm and piston technology, it delivers reliable performance across wide pressure ranges. Ideal for hazardous zones, this ATEX-certified solution ensures consistent switching accuracy, durability, and long operational life. Suitable for manufacturing, oil and gas, and automation systems requiring safe and efficient pressure control.

Category Pressure
Brand Elettrotec
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Technical details and application highlights

Review the complete description, feature set, and specification details before sending your inquiry.

The PML-PPL diaphragm and piston adjustable pressure switch is a high-performance industrial device designed for precise pressure control in hazardous environments. Built for intrinsic safety applications, this ATEX-certified pressure switch ensures reliable operation in explosive atmospheres. Its robust construction and versatile pressure range make it ideal for industries such as oil and gas, chemical processing, and industrial automation.

Key Features

This industrial pressure switch combines durability, precision, and safety compliance. With multiple adjustment ranges from low to high pressure applications, it supports accurate monitoring and control. The intrinsic safety design prevents ignition risks, making it suitable for critical environments. Its SPDT contact configuration ensures flexible switching performance.

Design & Functionality

The PML-PPL series incorporates both diaphragm and piston sensing technologies to accommodate different pressure requirements. The anodized aluminium and AVP steel body ensures mechanical strength, while advanced sealing materials like NBR, HNBR, and silicone provide compatibility with various fluids and temperatures. The compact design allows easy integration into industrial systems.

Total Crossed Beams

Engineered for consistent signal response, the internal mechanism ensures stable switching performance even under fluctuating pressure conditions. This enhances system reliability and reduces operational risks.

Beam Pitch Options

The adjustable set-point configuration allows precise calibration for rising and falling pressure levels. This flexibility supports a wide range of industrial applications, improving efficiency and process control.

Intrinsic Synchronism

The pressure switch maintains synchronized operation between mechanical sensing and electrical switching. This ensures accurate triggering without delays, even in demanding environments.

Operational Advantages

With a maximum static pressure of 600 bar and high mechanical life of over one million operations, the PML-PPL pressure switch delivers long-term reliability. Its IP65 protection rating ensures resistance against dust and water ingress. The ATEX certification guarantees safe usage in explosive atmospheres, making it a trusted solution for critical industrial operations.

Parameters

Intrinsic safety

ConnectorDIN 43650 form A PG09 or PG11
Input voltageVi 30 V
Input currentLi 100 mA
Max. input powerPi 0.75 W
Input capacityCi ≈ 0
Input inductanceLi ≈ 0
Adjustment range0.5–10 bar / 10–100 bar / 30–150 bar / 150–350 bar
Max. static pressure600 bar
Hysteresis30% of set-point
Temperature range-30 °C to +140 °C
ContactSPDT
Body materialAnodized aluminium – AVP steel
Diaphragm / Seal materialNBR – HNBR – Silicone
ThreadsG1/4 female
ProtectionIP65 – DIN 40050
Mechanical life10⁶ operations
DimensionsBody 30 × 30 mm – Max height 95 mm
CertificateATEX – II 1 G EEX ia IIC T6
OptionsRising/falling set-point – Gold-plated contacts
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