The Model VibraRod™ is a vibration type level indicator that provides reliable, durable and versatile point level sensing in a variety of applications within the powder and bulk solids markets. The vibratory sensor has a single probe design that is self-cleaning. The Vibra Rod does not require calibration which makes for easy set-up.
Principle of Operation:
The VibraRod™ line of point level sensors is a mechanical resonance system that is excited and kept in resonance by the sensor's electronic circuitry. Two piezoelectric crystals are mounted on the internal portion of the probe’s base. An electrical signal is applied to one crystal at the frequency corresponding to the probe’s self-resonance. This electrical excitation causes physical deformation of the crystal which in-turn creates probe vibration. When no material is present around the VibraRod's probe, the vibration of the probe is received by the second crystal. This causes physical deformation of the second crystal which generates a voltage analyzed by the electronic circuitry. With material present and surrounding the probe, the vibration is dampened so that the second crystal is not able to generate as high a voltage as when no material is present. The electronic circuitry senses this change and the relay output changes accordingly.Features:
SINGLE-PRONG PROBE DESIGNThe VibraRod™ provides a probe design superior to ""tuning fork"" devices and eliminates problems associated with build-up between tines of ""tuning fork"" devices. In addition, the VibraRod's vibration acts as a self-cleaning effect for most materials, which can further eliminate problems. The reinforced 316 stainless steel rod provides a high level of corrosion resistance suitable for virtually any application. The unique design of the VibraRod level sensor makes it immune to changes in many different application variables.
- Easy Setup - No Calibration
- Universal Power Supply
- No Clogging/Bridging Like Tuning Fork Designs
- Unaffected by Environmental & Material Changes - No Calibration
- Variety of Probe Configurations
- Pipe & Cable Extension Units Available
- Standard Version with Plastic or Aluminum Enclosure
- Hazardous Location ApprovalsApplications:
The VibraRod™ level sensor provides reliable point level sensing in a wide variety of applications for most bulk solid materials. The single-prong vibrating rod principle requires no calibration, is easily setup and eliminates the application problems associated with build-up and clogging between tines on a typical ""tuning fork"" device. The VibraRod is ideal for bulk solids ranging from 3.12 lbs/ft³ (0.05 kg/dm³ ) with a maximum particle size of about 3/8 inches (10 mm) and is even self-cleaning via vibration in many applications.Typical Applications include, but are not limited to:
Food Products Chemicals Clay Sawdust Fly Ash Grain Carbon Black Plastics Lime Sand Cement Feed Pellets Rice Flour Tobacco
| Specification | Power Requirements: 22-27VDC (+/-10%); 22-232VAC (+/-10%), 50/60 Hz Power Consumption: ≤ 4VA (AC); ≤ 3W (DC) Altitude: 6562 ft (2000m) max Installation Category: II Pollution Degree: 2 Process Temperature: . Standard Probe: -4˚ to 176˚ F (-20˚ to 80˚ C) . Pipe Extension Probe: -4˚ to 176˚ F (-20˚ to 80˚ C) Ambient Temp (all units): -22˚ to 149˚ F (-30˚ to 65˚ C) Output Relay: . VAC: SPDT isolated; 3A @ 250VAC max . VDC: SPDT isolated; 3A @ 30VDC max Sensitivity: . A: 10.0~12.5lbs/ft3 (160~200kg/m3) . B: 12.5~15.6lbs/ft3 (200~250kg/m3) . C: 18.7~21.8lbs/ft3 (300~350kg/m3) Time Delay (Fixed): . Hold-off (stop of vibration), delay of 1 second . Hold-on (start of vibration), delay of 2 to 5 seconds Fail-Safe: Switch Selectable: High or Low Max. Load at Probe End: 100 lbs [45.4kg] (450N) - Standard & Pipe Ext. Resonance Frequency: 355 to 390 Hz Housing: Powder coated die-cast aluminum; NEMA 4X, ENCLOSURE TYPE 4X, IP66 Process Connection: 1-1/4" NPT (VibraRod), 1-1/4” NPSC (Vessel); 304SS Pressure Rating: . Standard Probe: 145psi (10bar) . Pipe Extension Probe: 145psi (10bar) Conduit Connections: (2) 1/2" NPT Local Indicator: Bi-color LED; . Green = No material, . Red = Material present, . No light = No power Probe Material (all versions): 304 Stainless Steel Pipe Extension: 304SS 3/4” pipe, Customer specified length max. 6' [1.83m] for top mount, 2' [0.61m] for side mount Approx. Ship Dims. and Weight: Standard Probe: 17.75"Lx6.5"Wx6.5"H (451x165x165mm); 5lbs. (2.3kg) Approvals: CSAUS/C: Ordinary Locations; Class II, Div. 1&2, Groups E, F, G; Class III Hazardous Locations with Intrinsically Safe Probe ATEX: (Ex) II 2D Ex tb [ia Da] lllC T75˚C Db IECEx: Ex tb [ia Da] lllC T75˚C Db (See Bulletin #554K regarding specific conditions of use.) CE Mark CHINA RoHS 2 |
| Versions | Standard Version: . Single probe design VibraRod Vibratory Level Indicator - Standard Probe Pipe Extensions: . For high and low level applications that extend beyond the length of a standard probe. . Top-mount is intended for high-level applications only and is suitable for lengths up to 6’ (1.8m). . Side-mount is acceptable for short lengths and where probe is properly supported. Process Connections / Reducer Fittings: . 1-1/2” NPT x 1-1/4” NPT to attach VibraRod to a 1-1/2” ANSI pipe thread opening (Part #9-0101) . R 1-1/2” [BSPT] x 1-1/4” NPT to attach VibraRod to a 1-1/2” BSP/ISO pipe thread opening (Part #9-0102) |
