Mounting Location

Use vibrating rods to detect high levels by mounting them on the roof of the vessel. Alternatively, they can be mounted on the side for high, mid, or low-level alerts. Used in the cone of the bin or a hopper, they can detect when the vessel is almost empty.

Mounting Plates

Vibrating rods can be mounted on flat or sloped bin roofs. Powder-coated carbon steel mounting plates are available in 0°, 5°, 10°, and 30° angles. For mounting in the cone or on the side of the bin a 0° mounting plate is used.

Standard 7-inch

The VRX21 is the standard, in-stock model featuring a sword-shaped blade and a 7.37” insertion length. It is used for top and side mounted applications, plugged chute detection, or is installed in the cone of the vessel for low level detection of powders and solids.

Rigid Extended

The top-mounted VRX41 can be extended from 13” to 13’ using a galvanized, stainless steel or a sanitary pipe extension. It is used for level or plugged chute detection in heavy, medium, and light materials. It is sensitive enough to detect light fluffy materials with a dielectric as low as 1.25 lb./cu. ft.

Sediment Detection

The SED model is used to detect the level of settled sediment or solid materials in a tank of liquids. The sediment option is available for the standard-length VRX21 SED and VRX41 SED which can be extended with a rigid extension from 13” up to 13’.

Flexible Extended

The VRX51 features a steel-rope reinforced cable that can be extended from 19” to 19’ down into the vessel. The flexible extension resists damage from falling material. This top-mounted model is custom built to customer specifications.

Sanitary Environments

The VRX31 is designed for food or pharmaceutical use. This model features a 2” sanitary stainless-steel fitting for use with a tri-clamp for clean-in-place applications. It can be customized with an optional stainless-steel extension in lengths from 13” to 13’.

Round Rod for Coarse Solids

The VR-90 features a round, stainless steel rod suitable for coarse-grained solids and granules. It can also be used in food and pharmaceuticals when ordered with the stainless-steel enclosure option. The VR-90 is a good option for vessels where the material is changed often. It is available with hazardous location approvals should they be needed.

Vibrating rod level switches operate using a piezoelectric crystal element that causes the sensing blade or rod to vibrate at its natural frequency.

When the probe is uncovered, the vibrating element oscillates freely. But when material contacts—or covers—the probe:

1. The vibration becomes damped
2. The sensor electronics detect the change in vibration frequency
3. The sensor triggers a relay output, indicating a covered condition

When the material falls away from the probe, vibration resumes, and the sensor returns to an uncovered state.

This simple operating principle makes vibrating rods highly reliable and resistant to dust, buildup, and changing material characteristics.

Vibrating rod advantages brochure

Vibrating rod brochure

Vibrating Rod for Sediment Level Detection brochure

Vibrating rod VR90 brochure

Manual VR90

VRX21-31-41-51-61-71 Manual