The tuning fork level switch is a new type of level limit switch, which is widely used in the petroleum, light industry, food, water treatment and other industries, for level limit alarm and control. The product features are sturdy and durable, wide applicability, maintenance-free, no need to adjust, LED display status and working conditions.
This manual describes the JWY tuning‑fork level switch, a non‑contact level detection device that uses a crystal‑excited fork to sense material presence. It explains the principle of operation, typical applications such as petrochemical, food, and water treatment, and the advantages of no moving parts and low maintenance.
The document includes installation guidelines (side or vertical mounting with NPT or flange connections), wiring diagrams, adjustment procedures for vibration amplitude, protection measures, fault diagnosis for low‑ and high‑level alarms, and ordering information for custom lengths and configurations. This manual is written in Chinese.
| Material | Stainless steel |
|---|---|
| Supply Voltage | 220VAC 50Hz, 24V DC |
| Contact Capacity | 220VAC 0.5A |
| Container Pressure Rating | 1.0 MPa |
| Medium Temperature Range | -20 °C to 200 °C |
| Damping Delay | 2 seconds |
| Free Delay | ≤7 seconds |
| Fork Vibration Amplitude | 0.5 mm |
| Particle Size Limit | ≤10 mm |
| Length (compact type) | 142 mm |
The switch can be installed side‑mounted or vertically, using either NPT thread (standard type) or flange connections as shown in Figure 4.
The device can be powered by 220 VAC 50 Hz or by a 24 V DC source.