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Vibrating Probe Level Switch

Vibrating Probe Level Switch
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Vibrating Probe Level Switch

Product catalog summary
Working Principle
The Finetek vibrating probe switch is designed for versatile use in bulk solid applications, detecting levels of granular, sandy, chip-like, foodstuff, grain, or powdery materials. It operates on the principle of vibration frequency changes in a tuning fork when in contact with materials. Piezoelectric crystals in the probe generate vibrations, and frequency changes trigger the switch, making it suitable for low dielectric constant materials, varying moisture content, low viscosity liquids, and mixed materials.

Product Introduction
The vibrating probe features a stainless steel tube, vibration kit, and a wide voltage supply range (20~250, 50~60Hz Vac/Vdc). It offers SPDT relay output and SSR MOSFET output, with sensitivity adjustments for different density mediums. The device is maintenance-free, self-cleaning, and capable of detecting fine powders. It is certified by Euro and UL standards.

Applications
The probe is used for solid level detection in various materials, including powdered milk, flour, spices, coffee, grains, tobacco, plastics, and chip-like materials such as frozen potato chips and animal food.

Benefits
No calibration is required, and the device is easy to use, durable, and operates well under high temperature and humid conditions. Its design prevents medium buildup, and it has a high vibration force to shake off buildup.

Specifications
The probe is constructed from SUS 304/316, with a vibrating frequency of 395~405Hz. It operates in ambient temperatures of -40 to 60°C and bin temperatures of -40 to 80°C. The power supply is 20~250 Vac/Vdc, with a power consumption of 15VA max. It can handle operating pressures of -1 to 150 PSI (10BAR) and has a maximum vertical load on the rod of 177 in.Lbs (20Nm).

Installation
For vertical installation, the probe should be placed away from the inlet to avoid material impact. In horizontal installations, a 20-degree incline is recommended for optimal results. The conduit should face downward to prevent moisture ingress.

Operating Instructions
The device features fail-safe high (FSH) and low (FSL) protection modes. Sensitivity can be adjusted for high or low settings, suitable for detecting materials with varying specific gravities. The panel includes power supply and signal output indicators.

Ordering Information
Various models are available, including standard, extension, ultra-extension, cable extension, and corrosion-proof models. The ordering process involves checking voltage, mounting positions, material specific gravity, and any additional equipment attached to the silo wall.
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Catalog excerpts

Vibrating Probe Level Switch-1

Vibrating Probe Level Switch

 Open the catalog to page 1
Vibrating Probe Level Switch-2

PRODUCT INTRODUCTION WORKING PRINCIPLE The Finetek vibrating probe switch is highly versatile and can be used for most almost any bulk solid application. This includes level detection of almost any granular, sandy, chip like, foodstuff, grain or powdery materials. The operating principle is based on the changes of vibration frequency of the tuning fork when it comes into contact with a liquid or solid material.. The Vibrating probe contains piezoelectric crystals built into the vibration tube that produce vibrations/resonations at specific frequencies. One element acts as a transmitter of the...

 Open the catalog to page 2
Vibrating Probe Level Switch-3

SC2110 【Probe Extension Model】 Level sensor housing SC2120 【Ultra Extension Model】 Probe construction Conduit Max. vertical load on rod. Operating pressure. Power supply Power consumption Operating temp. in ambient air Signal output Min. material density sensed Relay, SPDT, 5A/250Vac, PNP/NPN(MOSFET)400mA/60 Vac/ Vdc Solid: ³0.32g/cm3 Time delay 0.6~1 Second / Operate; 2~5 Seconds / Reset Vibrating frequency. Selectable Fail-safe Selectable sensitivity

 Open the catalog to page 3
Vibrating Probe Level Switch-4

SC2300 【Cable Extension Model】 Level sensor housing Probe construction Mounting Conduit Max. vertical load on rod. Operating pressure. Power supply Power consumption Operating temp. in ambient air Signal output Min. material density sensed Relay, SPDT, 5A/250Vac, PNP/NPN(MOSFET)400mA/60 Vac/ Vdc Solid: ³0.32g/cm3 Time delay 0.6~1 Second / Operate; 2~5 Seconds / Reset Vibrating frequency. Selectable Fail-safe Selectable sensitivity

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Vibrating Probe Level Switch-5

NEPSI PROOF NO. GYJ111212 Ex d IIC T3~T6 PTB PROOF NO. 05 ATEX 1026 II 2G Ex d IIB T6 Gb II 2D Ex tb IIIC T85BC Db IP65 SC1701 【Probe Extension Type】 Level sensor housing SUS 304 / 316 Screw: 1"PT or PF, Flange: 1"~6"JIS / DIN / ANSI 1/2"NPTx2 Conduit Max. vertical load on rod. Operating pressure. Power supply Power consumption Operating temp. in ambient air Signal output Min. material density sensed SC1710 【Ultra Extension Type】 Probe construction Mounting Relay, SPDT , 3A/250Vac Max. Solid: ³0.32g/cm3 Time delay 0.6 Second / Operate; 2~5 Seconds / Reset Vibrating frequency. Selectable Fail-safe...

 Open the catalog to page 5
Vibrating Probe Level Switch-6

Vertical Installation (Figure 1): 1. Install the vibrating probe away from the inlet to avoid material impact or false readings. 2. Note the material flow pattern and place the vibrating probe in the appropriate position to avoid overflow. Horizontal Installation (Figure 2) 1. Install the vibrating probe away from the inlet to avoid material impact. If this is unavoidable make use of a shield or barrier for protection. 2. Installing the vibrating probe at a 20 degree incline will optimize the results and increase sensitivity. 3. Keep the conduit facing downward to avoid moisture getting inside...

 Open the catalog to page 6
Vibrating Probe Level Switch-7

OPERATING INSTRUCTIONS (EURO MODEL) SENSITIVITY OUTPUT MODE Fail-Safe High / Low Protection Terminal Function L+, N-: Power Supply FSH (Fail-Safe High) Protection: Switch to FSH mode. Normal Status: The signal lamp is on. It means that the vibrating probe does not sense the material and the relay is conductive. Failure: When the power shuts down, the signal lamp is off. It means that the vibrating probe is voided and the relay is not conductive. NC, COM, No: Relay Output RT1, RT2: Remote-Test : Ground Connection : SSR(MOSFET) Output Panel Function PWR: Power Supply (Green Light) SIGNAL: Output...

 Open the catalog to page 7
Vibrating Probe Level Switch-8

OPERATING INSTRUCTIONS (UL MODEL) FAIL SAFE SSR(MOSFET) Output Fail-Safe High / Low Protection Terminal Function L+, N-: Power Supply FSH (Fail-Safe High) Protection: Switch to FSH mode. Normal Status: The signal lamp is on. It means that the vibrating probe does not sense the material and the relay is conductive. Failure: When the power shuts down, the signal lamp is off. It means that the vibrating probe is voided and the relay is not conductive. NC, COM, No: Relay Output RT: Remote-Test : Ground Connection : SSR(MOSFET) Output Panel Function PWR: Power Supply (Green Light) SIGNAL: Output Indication...

 Open the catalog to page 8
Vibrating Probe Level Switch-9

2120: Vibrating Probe Ultra Extension Model 2300: Cable Extension Model 2500: Corrosion Proof Model Explosion Proof models POWER & OUTPUT MODULE- A: Relay O/P (Barrier terminal block-limited to the 17's and 21's series) B: Transistor PNP/NPN (Barrier terminal block-limited to the 17's and 21's series) R: Relay O/P (Green terminal)-EuroType ^ The letter A depicts lengths longer than 10m: A150 =15m, A200 = 20m CHECK - before placing order 2. Check the mounting positions. 3. Check the material specific gravity (S.G.) value. 4. Check whether any bridge block or vibrating motors are attached to the...

 Open the catalog to page 9
Vibrating Probe Level Switch-10

Mini Float/Magnetic Float Level Switch Magnetic Float Level Transmitter Side Mounting Float Switch Cable Float Level Switch Thermal Dispersion Flow Switch Paddle Flow Switch Optical Level Switch Capacitance Level Switch Rotary Paddle Level Switch Pressure Level Transmitter Vibrating Probe Level Switch Tuning Fork Level Switch RF-Capacitance Level Transmitter RF-Capacitance / Admittance Level Switch Magnetostrictive Level Transmitter By-Pass Level Transmitter FMCW Radar Level Transmitter Electromechanical Level Measuring System Ultrasonic Level Transmitter Mini By-Pass Level Transmitter Speed...

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