GTC200 tuning fork switch

Product Features

Adopting a vibration based working principle sensor, it is simple, practical, and reliable in operation; Used for upper and lower limit switch control of liquid and solid media;

The measurement is not affected by foam, pressure and eddy current, and has strong applicability, anti-corrosion and explosion-proof output and input forms.

Working principle

A fork shaped sensor using piezoelectric crystals is driven to vibrate through a circuit. When the sensor is subjected to material damping, its vibration amplitude increases

The drama decreases, and the vibration frequency and phase undergo significant changes. This change is verified by the internal electronic circuit of the instrument and processed accordingly,

Convert into switch signal output, used for limit alarm and control of various material levels (solid, liquid).

Technical Parameter

Allow the tested medium	Liquid, powder or granular solid
Allow the density of the measured medium	Solid ≥ 0.1g/cm3 Liquid ≥ 0.7g/cm3
Allow the measured solid particle size	≤10mm
Maximum allowable liquid year	＜1000mm2/s
Allow the measured medium to rest angle	≥20°
Allowable medium temperature	-20℃~80℃
Allow ambient temperature	20℃~80℃
Allow storage temperature	-30℃~70℃
Allow environmental humidity	≤98%RH
Allowable working voltage	≤1MPa
Housing material	Die cast aluminum alloy or plastic BPTP
Connection method	G1 1/2 threaded flange (user selected)
Working power supply	DC24V or AC220V 50HZ
output signal	Relay output 8A220VAC DC voltage output 0 or 5V DC current output 0 or 10mA
Voltage power consumption	≤2W
Sensor operating frequency	300±50HZ
Environmental vibration level	V. Acceleration not exceeding 1g
Response time of switch signal	Adjustable from 2s to 6s
Fork material	Stainless steel 316
protection grade	IP66

Exterior structure

Electrical connection

Installation method

In the case of scarring, sufficient space should be left between the fork and the tank wall.

·For highly viscous liquids, the tuning fork head cannot freely separate the process medium, and it is recommended to only install the fork end vertically downwards.

·For instruments used for level monitoring, the installation position of containers similar to vertical cylinders depends not only on the need for monitoring

The height of the material level should be considered or controlled, while also taking into account the resting angle and feeding position of the material. When installed horizontally, the fork

The end should be located one-third of the container radius away from the inner wall of the container, and the two forked strands should be in the same horizontal plane. Vertically installed in

When installing at the top of the container, the distance between the installation center and the inner wall of the container should be selected at one-third of the container radius. Instrument installation position

The placement should try to avoid direct impact and splashing of material flow as much as possible, in order to avoid erroneous actions and wear. If it is impossible to measure the surface material

For the impact and splashing of materials, protective eaves can be installed above the instrument installation position, and the effective width of the protective eaves should be greater than

The width of the fork end should be greater than the actual size of the instrument penetrating into the silo.
·Explosion proof tuning fork is used in an environment with a temperature range of -30 ℃~60 ℃, for measuring the level of explosive mixed gas in zone 1, and for explosion-proof purposes
Level: ExdII CT5

·The explosion-proof tuning fork cable entry device requires the use of certified cable glands or explosion-proof flexible conduits with explosion-proof ratings

ExdII CT5。

During installation and use, do not grip the fork of the instrument with your hands or strike or bounce the fork to avoid deformation caused by force and even internal damage

The piezoelectric component is damaged.