The VR Series of vibrating rods are piezoelectric devices with a single blade-shaped vibrating element. Material coming into contact with the probe dampens the vibration; material falling away returns the unit to normal vibration. This allows the unit to be used for high or low level indication. The VR Series includes three different models:

• VR 21 - Standard unit with an insertion length of 7.37"
• VR 41 - Extends up to 13', using a solid extension tube
• VR 51 - Extends up to 19.5', using a flexible cable extension

• Suitable for high and low level indication
• Detects extremely light, fluffy materials and materials with low dielectric constants
• Unique "blade" probe design reduces false alarms caused by buildup
• Insertion length adjustable from 7.37" to 19.5'
• Switch selectable high/low fail-safe