This universal vibrating level switch is an ideal instrument for accurate point level detection in liquids. Using vibrating fork technology, this device will detect the change in its natural resonant frequency (1.100 Hz) which is driven by an internal piezoceramic element inside the sensor.
The frequency will change when the sensor is covered to a known point on the vibrating fork upon which the sensor will send a switching output. If the vibrating fork is not covered by a liquid, its natural resonant frequency changes back and so do the state of the switching output. Typical applications include washing, filling, cooling and lubricating systems, sump level and bulk holding tank level control.
Features & Benefits
- Simple, compact design
- Extremely reliable
- Setup without adjustment or calibration
- Independent of liquid properties and installation conditions
- No moving parts, thus wear and maintenance-free
- External test option using test magnet
- Suitable for temperatures up to 150º C (302º F)
Specifications
| Electrical Data | |
| Switching Output Type | Transistor (For connection to binary inputs of a PLC with an input resistance <100kΩ) |
| Supply Voltage | 10 to 31 VDC |
| Load Current Max. | 250mA (output is overload and permanently short-circuit protected) |
| Off-State Current (Load Off) | < 10uA |
| Voltage Drop | < 1V |
| Power Consumption Max | .825W |
| Protection Class | IP66/67 |
| Over-voltage Category | III |
| Connection Plug | M12x1, 4-Pin (See order code for adding the mating – M12 cable) |
| Measurement Performance (Reference Condition: Density .7g/cm3 | |
| Hysteresis | 0.08in (2mm) 3mm +/- 5mm |
| Switching Point (Nominal) | Vertical Installation: 0.51in (13mm) above tip of fork (indicated by a small notch on the outside of the fork paddles) |
| Horizontal Installation: Center axis of the fork paddle (indicated by an elogated ridge on the outside of the fork paddles) Switching point is in any liquid definitely located on the fork paddle area | |
| Switching Delay | On: 0.5s / Off: 0.5s |
| Application Conditions | |
| Dielectric Constant [ɛᵣ] | No restriction (Suitable for all oils, ie: cutting, grinding and hydraulics oil; collant; erosion dielectric fluid; cleaning and degreasing agents; solvents; all liquid lubricants; water and water-based liquids) |
| Conductivity | No restrictions |
| Density | 0.025 to 0.9lbs/in3 (0.7 to 2.5g/cm3) (Not suitable for substances with very low density, ie. propane) |
| Dynamic Viscosity | 0.1 to 10,000cP (0.1 to 10.000mPa s) (Not suitable for very viscous or adhesive substances) |
| Solid Content in the Liquid | Max. 0.2in (5mm) diameter of solid particles contained in the liquid can be used in slurries |
| Foam/Air Bubbles | Insensitive to foam and air bubbles |
| Build-up | Avoid situations where a substance coats and dries on the fork, thus creating excessive build- up/caking on the fork or even bridge the fork (ie. dense paper slurries, bitumen) |
| Application Temperature | F: -40º to + 212º or -40º to + 302º C: -40º to + 100º or -40º to +150º |
| Ambient Temperaure | F: -40º to 158º C: -40º to 70º |
| Temperature Shock | No restrictions |
| Application Pressure | -14.5 to 580 PSI (-1 to 40 Bar) |
| Mechanical Data | |
| Ingress Protection Rating | M12x 1 plug: IP66/IP67 |
| Connection Size | 3/4″ or 1/2″ |
| Thread Type | NPT (US) or G (Metric) |
| Surface Finish [Ra] | 1.26in-4 (<3.2um) |
| Material All Metal Parts | 1.4404 (316L) |
| Other Materials | PEIFlat seal: Klingersil C -4400, Plastic End Cap: |
Download Datasheet: Vibex™ LSV1 Vibrating Level Switch, Flocorp-Level Switches
Ref: Flo-corp.com
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