KVS100 Series Vibrating Fork Liquid / Solid Level Switch
Introduction
KVS100 series is a compact vibrating fork liquid level switch. It can be applied to the level measurement of vessels and storage tanks under difficult conditions. It is not only suitable to use in foams, air bubbles, viscous liquid and conditions with complex vibrating interference, but also particularly suitable to be installed in small containers and tanks with constricted mounting space. The design principles are also based on detecting the change of the vibration frequency when fork body is immersed in medium.
Principle
KVS100 level switch is designed based on detecting the change of the vibration frequency when fork body is covered by medium. The frequency of tuning fork will obviously decrease if it is covered by liquid. This change of vibration frequency directly reflects on the output signal of the piezoelectric detection device; thus, the detection circuit responds to the change of frequency and converts into a switching output signal.
Features
- Customized length can reach 3m
- DPDP SPDT Relay / NPN / PNP output
- 20~250VAC / VDC, 50/60Hz
- Whole metal construction, sturdy and durable.
- Self-study function. It can study different medium density by using buttons.
- The vibration amplitude of the fork is large, and the amplitude can reach more than 10mm, which can shake off the low-viscosity local hanging material on the induction rod to prevent malfunction.
- Bright red LED warning light.
- For liquid, powder, granule, thick medium measurement.
Parameters
Item | Specification |
Controller Casing Material | Aluminum alloy (IP65) |
Power Supply | 22-60VDC, 22-220VAC, 50/60Hz |
Power Consumption | DC-3W (MAX), AC-15W (MAX) |
Output | DPDT 5A/250VAC or NPN/PNP |
Operating Pressure | -1-40bar |
Installation | vertical or horizontal |

Model | KVS120 sanitary type |
Connection | 2” clamp(customizable) |
Rod Material | SUS304 / 316 |
Operating Temperature | -40℃~130℃ |
Insertion Length | 100mm(customizable) |
Ordering Information
KVS | |
| Model | |
120 | sanitary type |
| Power and Output |
Code | Power Supply |
A | 224VDC-220VAC relay output |
B | (NPN PNP transistor output) |
| Code | Connection | Code | Size |
A | 3/4” (20A) | M | 5Kg/cm2 |
B | 1” (25A) | N | 10Kg/cm2 |
C | 1-1/2” (40A) | O | 150Lbs |
D | 2” (50A) | P | 300Lbs |
E | 2-1/2” (65A) | Q | PT |
F | 3” (80A) | R | PF (G) |
G | 4” (100A) | T | NPT |
H | 5” (125A) | U | sanitary joint |
I | 6” (150A) | W | PN1.0 |
S | customize | X | PN1.0 |
| | Y | PN1.0 |
| | Z | PN1.0 |
| | S | customize |
| Rod Length (mm) |
Note: 1. The total length of the product is affected by the function adjustment, and the tolerance is ±5mm. 2. Features, specifications and dimensions could be modified when necessary without prior notice. |