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Documents: VRLS-01

Instruction Manual Model VRLS Catalog Page More Info

VRLS-01 | Vibrating rod level switch. | Dwyer

Vibrating rod level switch.

Brand: DwyerSKU: VRLS-01

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Overview Details for VRLS-01

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Vibrating rod level switch.

Model VRLS Vibrating Rod Level Switch

Economical, No Material Build Up, For Powder or Bulk Solids

The Model VRLS Vibrating Rod Level Switch is an economical choice in leveldetection of powders and bulk solids. The VRLS utilizes a piezoelectric crystal thatvibrates the rod at a natural frequency. Once the rod comes in contact with the material,the vibration will be dampened and the switch will change state. Once the rod is uncoveredby the material, the switch will revert to its normal state. Perfect for silo or hopperapplications, its probe design allows for self-cleaning, ensuring no build-up or bridging ofmaterial and accurate detection. Sensitivity is adjustable for detection ranging from largegranular material to small powders with low bulk densities. The failsafe mode can be setfor failure on high level or failure on low level using a selector switch in the enclosure.

Product Applications

Lime, styrofoam, tobacco, dry cereals, sugar, animal feed, milk powder, flour,insulation, cement, paper shavings, plastic granules, sawdust, carbon black, lightfibers, detergent powders, dyes, chalk, silica, and wood chips.

Probe design allows for self-cleaning, ensuring no build-up or bridging of material and accurate detection
No mechanical moving parts with no routine maintenance required
Sensitivity is adjustable for detection ranging from large granular material to small powders with low bulk densities
The failsafe mode can be set for failure on high level or failure on low level using a selector switch in the enclosure
Unaffected by the dielectric constant of the sensed material, making it superior to a capacitance level switch for applications where the dielectric constant is too low, where there is more than one material being used in one vessel, and when material moisture content can change
Ideal for applications where the bulk density is too low for a rotating paddle level switch

Specifications

Service: Dry powder or bulk materials compatible with wetted materials.
Sensitivity: Min. bulk density of 20 lb/ft3 (320 kg/m3).
Wetted Materials: 304 SS.
Temperature Limits: Ambient: -40 to 140°F (-40 to 60°C);Process: -40 to 176°F (-40 to 80°C).
Pressure Limit: 150 psi (10 bar).
Power Requirement: 20 to 250 VAC/VDC; 50/60 Hz.
Power Consumption: 15 VA.
Enclosure: Aluminum; painted.
Enclosure Rating: IP65.
Switch Type: SPDT.
Electrical Rating: 5 A @ 250 VAC.
Electrical Connections: Screw terminals.
Conduit Connection: 1/2" female NPT x 2.
Process Connection: 1" male NPT.
Indication Lights: Internal: green and red LED.
Sensing Delay: 0 to 6 s.
Weight: 4.4 lb (2.0 kg).