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8111 Vibrating Level Switch
Brand: Burkert Fluid Control Systems
The 8111 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.
Depending on the version it is also used for monitoring or control of levels in hazardous environments, even for combustible liquids, gases, fogs or vapours.
Due to the simple and rugged measuring system, the 8111 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
Specifications
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
- Security: EN 61010-1
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
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 M20x1.5
Electrical Rating
- 1 A at 253 Vdc, 50 W, Max.
- 10 µA at 10 mV Min. - Relay Output
- 5 A at 253 Vac, 1,250 VA, Max.
- 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 C-4
- PFA
Frequency
- Approximately 1,200 Hz
Hysteresis
- Approximately 2 mm (0.08”) with Vertical Installation
Length
- Extension Tube Length: 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
- Tuning Fork & Process Fitting: 316L Stainless Steel 1.4435
- Food and Beverage Industry
- Chemical Industry - Solvents, Reactors
- Water/Sewage Water Plants
