NOHKEN INC.
NOHKEN INC VQ Series Tuning Fork Level Sensor
Manufacturer: NOHKEN INC
Model: VQ Series
Main application
VQ is a compact level sensor ideal for integration into machinery. Wetted parts, the fork and process connection, are 316L stainless steel to offer high corrosion resistance. The cover has a window. The user can check operation status through it by LED without opening the cover. The fork assembly incorporates a piezo-electric crystal. This crystal oscillates the detecting element, the fork, at a frequency. The frequency changes when the fork is covered by the material. The electronics of the sensor detects this change in frequency, and gives an output for presence or absence of the material.
Main feature
FR offers excellent durability and corrosion resistance, compatible with most liquids. Standard wetted parts use 316LSS with optional ECTFE coating for enhanced protection.
Users skip adjustment and maintenance, even when switching liquid types. FR operates immediately after installation.
Supports both AC/DC power supplies:
Two-wire type: 24–240V AC ±10% (50/60Hz) / 24–54V DC ±10%
Relay type: 100–240V AC ±10% (50/60Hz) / 24–54V DC ±10%
Built-in LED provides operation check and failure diagnosis.
In case of error, the LED blinks 5 times and turns off for 1 second.
Technicians can use the test switch to reverse operation and verify the loop during installation and maintenance.
Applications
High or Low Alarm in small tank
Pump control (Charge or Discharge control)
High or Low Alarm in small tank
