The tuning fork level meter is a point level instrument for powder, granules, and bulk solids in silos, hoppers, tanks, and pipelines. A piezoelectric crystal drives the fork at its natural frequency. When material covers the fork, frequency decreases and the output switches, giving high, low, or intermediate level alarms. It is widely used in chemical, food, pharmaceutical, cement, power, and mining industries because it works reliably under dust, vibration, and changing material conditions.

As a professional tuning fork level meter manufacturer, we supply powder level detection fork switches in standard, compact, extended, and high-temperature models. The fork is made of stainless steel, and the housing is available with IP65/IP66/IP67 protection. The sensing fork has no moving parts, so maintenance is minimal and service life is long.

The working principle is simple: a piezoelectric crystal vibrates the fork at about 125-350 Hz. When the fork is buried by media, the frequency shift is detected by internal electronics and output changes state. When the material clears, the original frequency returns and output resets automatically. This makes it ideal for low-level alarms, overfill prevention, pump protection, and blocked filter detection.

Our tuning fork level meter is especially suitable for powder level detection. It detects fine powders like fly ash, flour, milk powder, lime powder, cement, plastic pellets, silica sand, carbon black, and other bulk solids. The fork can be installed vertically or horizontally, and built-in sensitivity adjustment handles different material densities and particle sizes. The design also reduces the effect of buildup, static electricity, and material flow, ensuring accurate alarm points.

When considering the tuning fork level meter price, check material of construction, process connection, insertion length, explosion-proof certification, and output type. Our factory offers competitive prices without compromising quality. We supply low-cost general-purpose models, food-grade sanitary versions, ATEX/IECEx approved hazardous-area instruments, and high-temperature probes up to 250°C or more. Every unit is calibrated before delivery and supported with warranty and technical service.

Installation is quick. The standard connection is 1 inch BSP or G1, with optional flanges, tri-clamp, or custom threads. Mount the fork vertically or horizontally in a tank, hopper, or silo. For low-level alarm, position it slightly above the outlet. For high-level alarm, place it at the desired fill height. A shield can be used if material impacts the fork directly, preventing false signals.

Key benefits are no moving parts, easy calibration, low maintenance, universal power supply, and compatibility with PLC/DCS. Output options include SPDT relay, PNP/NPN transistor, and 4-20 mA HART. An LED indicator helps commissioning and troubleshooting. Compensation circuitry prevents false switching from material impact or vessel vibration. Common uses include coal bunkers, cement silos, plastic hoppers, flour silos, dust collectors, and chute blockage detection. The fork switch is more reliable than capacitive or rotating paddle devices in many dusty powder applications.

For a reliable powder level detection switch, choose an experienced manufacturer with proven engineering and responsive service. Our tuning fork level meter price is transparent and factory-direct. We welcome sample tests, OEM/ODM customization, and distribution inquiries. Contact us for a datasheet, manual, and quotation.