Burkert Vibrating Level Switch, 8112
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8112 Vibrating Level Switch

Brand: Burkert Fluid Control Systems
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The 8112 is a vibrating level switch for liquids, using a tuning fork for level detection. It is designed for industrial use in areas of process technology and can be used in liquids. Typical applications are overfill or dry run protection. The Type 8112 is available with different sensor length using tube extension. The right length can be adapted thanks to a lock fitting. 

Due to the simple and rugged measuring system, the 8112 is virtually unaffected by the chemical and physical features of the liquid. It works even under unfavourable conditions such as turbulence, air bubbles, foam generation, buildup or varying products.
Features
  • For universal use as overfill or dry run protection system
  • Setup without adjustment
  • For food and beverage industry thanks to surface finishing <0.8 µm
  • ATEX approvals

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Specifications

Brand

Ambient Temperature Range

  • Conformity Specification: -40° to 85° C (-40° to 185° F)
  • Operating: -40° to 70° C (-40° to 158° F)
  • Storage: -40° to 80° C (-40° to 176° F)

Applications

  • Chemical Industry - Solvents, Reactors
  • Food Processing Industry
  • Water/Sewage Water Plants

Approvals & Certifications

  • ATEX: EN 50014, EN 50020, EN 50284
  • CE
  • EMC EN 61326
  • Ex Ia IIC T6
  • NAMUR: IEC 60947-5-6 (EN 50227)
  • PTB

Approvals & Certifications

  • Security: EN 61010-1

BSP Connection

  • G 1" Male
  • G 3/4" Male

Class

  • Protection: Class I (Relay Output)
  • Protection: Class II (NAMUR Output)

Consumption

  • Current (Falling Characteristic - Blade Covered, Rising Characteristic - Blade Uncovered, Fault Signal): ≤ 1 mA - NAMUR Output
  • Current (Falling Characteristic - Blade Uncovered, Rising Characteristic - Blade Covered): ≥ 2.2 mA - NAMUR Output
  • Power (AC): 1-8 VA - Relay Output
  • Power (DC): Approximately 1.3 W - Relay Output

Cover Material

  • Polycarbonate (PC)

Delay Time

  • Approximately 500 milliseconds
  • When Immersed: 0.5 seconds - Relay Output
  • When Laid Bare: 1 second - Relay Output

Density Range

  • 0.5 to 2.5 g/cm³ (DIP Switch)
  • 0.7 to 2.5 g/cm³

Electrical Connectors

  • 1 or 2 Cable Glands M20 x 1.5

Electrical Rating

  • 1 A at 253 Vdc, 50 W, Maximum
  • 10 µA at 10 mV Minimum - Relay Output
  • 5 A at 253 Vac, 1,250 VA, Maximum
  • Short Circuit Rating: 103 mA

Enclosure, Body Material

  • 316L Stainless Steel, 1.4404
  • PBT (Polybutylene Terephthalate)

Environmental Protection

  • IP66
  • IP67

Flange Material

  • ECTFE (Ethylene Chlorotrifluoroethylene)
  • Enamel
  • Hastelloy® C4
  • PFA

Frequency

  • Approximately 1,200 Hz

Hysteresis

  • Approximately 2 mm (0.08") with Vertical Installation

Length

  • Extension Tube: 200 to 1,000 mm

NPT Connection

  • 1" NPT Male
  • 3/4" NPT Male

Power

  • 516 mW

Power Supply

  • 20-253 Vac at 50/60 Hz - Relay Output
  • 20-72 Vdc - Relay Output
  • Conformity Specification: 20 V
  • NAMUR Input: 8.2 Vdc
  • Open-Circuit Voltage: 8.2 V - NAMUR Output
  • Short-Circuit Current: Approximately 8.2 mA - NAMUR Output

Pressure Range

  • psi: -14.51 to 928.64 (kPa: -100 to 6,400, bar: -1 to 64)

Process Temperature

  • -50° to 150° C (-58° to 302° F)

Ring Material

  • Seal Ring: EPDM

Seat / Seal Material

  • Process Seal: Klingersil C 4400

Switch Type

  • 2 Floating SPDTs
  • Relay (DPDT)

Temperature Range

  • -50° to 250° C (-58° to 482° F)

Tri-Clamp Connection

  • 1" Tri-Clamp®
  • 1-1/2" Tri-Clamp®
  • 2" Tri-Clamp®

Viscosity

  • Dynamic Viscosity: 0.1 to 10,000 MPa-s (with Density 1)

Wetted Materials

  • Extension Tube ø 21.3, Tuning Fork & Process Fitting: 316L Stainless Steel 1.4435

Documentation

Data Sheets

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