Material level gauge

sensors on the loading station are installed with stress sensors on the steel structure support of the silo. When the material level in the silo changes, the stress on the steel structure support of the silo also changes accordingly. This change is small, but the Ramsey stress sensor can accurately measure it. By processing sensor signals, accurate material levels can be obtained.

GZ-1 stress sensor:

Stress sensors directly installed on the steel structure support of the silo and hopper. The shape is cylindrical with a diameter of 19mm. During installation, drill holes on the support and use a specialized installation tool to squeeze GZ-1 into the holes.

characteristic:

1) Precise patented strain sensor

2) The sensor adopts a Wheatstone bridge structure to eliminate external environmental temperature instability

3) 19mm diameter stainless steel structure

4) Sensors sense stress changes in the silos and tanks supported by steel structures. The effective stress variation range from no-load to full load is 105kg~1000kg/cm2.

5) Each weighing system can be equipped with up to 8 sensors.

Programming and self diagnostic function of control instruments based on microprocessors

Non volatile memory 50 segment LED display

Button calibration and alarm adjustment adjustable high and low alarm set points

Fixed overflow alarm (102% capacity) with polystyrene shell, weather resistant

The controller can be 1000 feet away from the sensor with a maximum allowable error of 2%

Optional 4-20mA or 0-20mA output provides dedicated installation tools and drill bits

Stress calculation:

1. Scope of application: For silos with metal supports, stress calculation is also required

2. Stress (Kg/cm2) calculation: 105 Kg/cm2<stress<1000 Kg/cm2

(1) Vertical structural stress normal stress=P/NxA

Where P=total amount of material in the hopper; N=total number of legs; A=cross-sectional area of each leg (cm2)

(2) Horizontal structural stress and tangential stress=P/2xNxDxTW

Where P=total amount of material in the hopper; N=total number of supporting angle plates; D=height of I-beam (cm); TW=thickness of I-beam

(3) Surrounding plate support stress=P/π xDxST

Where P=total amount of material in the hopper; D=diameter (cm); ST=thickness of enclosure board (cm)

3. The number of sensors installed is determined based on the support type and on-site conditions, but multiple sensors can evenly distribute uneven loads and improve accuracy.

4. Configuration: Sensor selection: GZ-1: General situation; Weighing module: designed in the silo support body

Control instrument: CL-100: red LED bar chart;

DCL-100 (Mini11-100): 16 bit LCD display

Junction box and installation tools: The junction box corresponds to each sensor;