The tuning fork level switch is a new type of liquid level switch. The tuning fork vibrates using a crystal excitation. When immersed in liquid, the frequency of the vibration changes. This frequency change is detected by electronic circuitry and outputs a switching value. Also known as an "electric float," the tuning fork level switch can be used in applications where a float level switch is not suitable due to structural issues, turbulence, agitation, bubbles, vibration, or other factors. Since the tuning fork level switch has no moving parts, it requires no maintenance or adjustment, making it a superior alternative to the float level switch.
Measuring medium: Liquid
Measuring range: 45-1000mm
Process connection: G1-1/2", 1-1/2" NPT
Accuracy: ±3mm or 0.1% FS (whichever is greater)
Ambient temperature: -40°C to 120°C
Power supply: 8.2VDC/24VDC/220VAC
Response time: Approximately 1 second
Explosion-proof certification: Intrinsically safe: Ex d IIC T1-T5/T6 Ga; Ex ia D 20 T85°C
Protection rating: Aluminum/IP67
Output signal: Relay / (namur) / 8~16mA
Oscillating frequency: 980~1080Hz
Density range: Liquid ≥ 0.7g/cm³
Viscosity range: 1-10000 cSt
Dysfunction setting: Approximately 3mm
Actuation point: Vertically inserted approximately 25mm into the material
Process pressure: -1...30bar
Material: SUS304/SUS316/SUS316 coated with PTFE
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