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Mamco Pressure Switch, LF31

LF31 Pressure Switch

Brand: Mamco
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The MAMCO LF31 series switch was designed for use in the HVac industry where safety and reliability are essential. Despite the design intent, this series has proven to be a viable solution for many pneumatic applications as well. 

Available in vacuum switch, differential switch and pressure models with fine silver or gold cross bar contacts, the LF31 is capable of detecting very low pressures. 

Factory calibrated units maintain set point tolerances of ±10% over a temperature range of -40° to 185° F due to its molded silicone diaphragm and the stability of its glass filled polyester body. 

MAMCO/LEFOO offers multiple electrical terminations and mounting options as well as bleed holes and three different size orifices. This switch series is not only the leading product in the market offering the highest quality and reliability but is also the most economical.

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Specifications

Brand

Applications

  • HVac Industry
  • Pneumatics

Tube Connection

  • 6.4 mm

Electrical Rating

  • Current: 100 mA Min., 5 A (Resistive) - Max.
  • Current: 15 mA Min., 0.5 A, Max.

Electrical Connectors

  • Terminals: 6.4 mm to 4.8 mm

Burst Pressure

  • psi: 5 (kPa: 34.47, bar: 0.3447) Min.

Proof Pressure

  • Inches WC: 100
  • psi: 3.6 (kPa: 25, bar: 0.25)

Operating Temperature

  • -40° to 85° C (-40° to 185° F)

Resistance

  • Initial: < 50 milliohms

Mounting Position

  • Diaphragm in Any Vertical Plane

Set Point - Increasing

  • Inches WC: 0 to 34
  • mbar: 0 to 84.6
  • mmHg: 0 to 63.52

Set Point - Decreasing

  • Inches WC: 0 to 34
  • mbar: 0 to 84.6
  • mmHg: 0 to 63.52

System Pressure

  • Inches WC: 100
  • kPa: 24.8
  • mbar: 248
  • psi: 3.6

Materials of Construction

  • Electrical Contact: Fine Silver Alloy
  • Electrical Contact: Gold Platinum Silver Alloy

Enclosure, Body Material

  • Glass-Filled Polyester
  • Silicon

Media

  • Air
  • Natural Gas
  • Products of Combustion

Approvals & Certifications

  • ISO 9001: 2000

Switch Type

  • SPDT
  • SPST

Tolerance

  • Set Point: ± 10 %

  • HVac Industry
  • Pneumatics

Documentation

Data Sheets

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