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K-Dyne Flange Mount Electric Level Switch, Model L81

Model L81 Flange Mount Electric Level Switch

Brand: K-Dyne, Inc
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This Model L81 liquid level switch incorporates a slip ring mount configuration and is ideal for applications where a positive process pressure seal is required. It utilizes an explosion proof SPDT or DPDT snap acting dry contact switch and has an extended float rod for installation thru 2" or larger flanges. The design has a non-adjustable trip point and narrow level operation range making it perfect for applications where trip point tampering is unacceptable.
Features
  • Extended float rod ideal for mounting in tanks or vessels with 2" ANSI flanges
  • Explosion proof switch: Dry contact, hermetically sealed switch, has UL, CSA, & FM hazardous location classification; Meets NEMA 7 and 9
  • Excellent for dirty fluid applications: The design has no deep cavities or recesses exposed to process fluids
  • No external adjustments: The design minimizes the set point tampering on high or low level alarms
  • Isolated pivot: Patented internal pivot seal design provides efficient mechanism to transmit liquid buoyancy

Specifications

Brand

Ambient Temperature Range

  • -29° to 74° C (-20° to 165° F)

Approvals & Certifications

  • UL Rated Dry Contact Snap Switch for Hazardous Locations Class I Groups A, B, C, D, Class II Groups E, F, G

Cap Material

  • Spring Cap: 316 Stainless Steel

Cone Material

  • 630 (17-4 PH) Stainless Steel

Electrical Connectors

  • 18 AWG x 18” Leadwires

Electrical Rating

  • 11 A, 1/4 hp at 125/250 Vac
  • 5 A Resistive, 0.25 A Inductive at 125 Vdc
  • 5 A Resistive, 3 A Inductive at 28 Vdc

Enclosure, Body Material

  • 316 Stainless Steel

Environmental Protection

  • NEMA 7
  • NEMA 9

Flange Size - 2” (DN 50)

  • 2” (DN 50) - Unrated

Fluid Specific Gravity

  • Minimum: 0.6

NACE & NIST

  • NACE

Nut & Bolt Material

  • Hex Nut: 316 Stainless Steel

Operating Pressure

  • Maximum

Pressure Range

  • Maximum

Process Connection Style

  • 2” or Larger

Process Temperature

  • Maximum

Screw Material

  • Socket Cap Screw: 316 Stainless Steel

Seal Retainer

  • 316 Stainless Steel

Seal Type

  • Hermetically Sealed

Seat / Seal Material

  • Body Seal: Fluorocarbon (FKM)

Spring Material

  • Inconel X-750

Switch Type

  • DPDT
  • SPDT

Documentation

Data Sheets

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