HQUHZ-CZ Magnetostrictive Liquid Level meter

• Product Description

When the sensor of the HQUHZ-CZ magnetostrictive level gauge is working, the circuit part of the sensor will excite a pulse current on the waveguide wire. As the current propagates along the waveguide wire, it will generate a pulse current magnetic field around the waveguide wire.

I. Overview of Magnetostrictive Level Gauges

■ Capable of measuring the liquid level and interface level of various storage tanks or process tanks; an intelligent field instrument achieving high-precision liquid level (interface) measurement at trade-grade levels;

■ Can be used independently by inserting it into the tank top;

■ Can be used in conjunction with magnetic floats and installed on the side of the tank;

■ By increasing the number of floats, it can simultaneously measure the liquid level and interface;

■ By selecting appropriate floats, it can directly measure the interface;

II. Advantages of Magnetostrictive Level Gauge

This product is an original German product, and its high quality and cost-effectiveness make it widely used in various liquid level measurements.

Advanced SYSTEC Technology

(1) Measurement accuracy: ±1.0mm
(2) Resolution: 1.0mm
(3) Can simultaneously measure interface and liquid level
(4) Built-in temperature compensation
(5) 2-wire system (4~20mA)
(6) HART protocol (optional)
(7) Fast response speed and extremely short sampling period
(8) Widely used in explosion-proof applications (ATEX, IECEx certified)
(9) Simple structure, robust design, long service life, and high reliability
(10) Resistant to shock and vibration
(11) Measurement range can be adjusted arbitrarily with probe length, and calibration is simple
(12) Simple installation, no need to adjust or modify parameters, and it can run after power-on.

III. Magnetostrictive Level Gauge Structure

1. Transmitter Head: Stainless steel head, capable of separate level indication, two-wire output (power supply/communication), HART communication (optional)

2. Sensing Section: Includes a piezomagnetic sensor and a long-life magnetostrictive signal pulse waveguide

3. Magnetic Float Section: Multiple models are available for different densities, pressures, and materials; materials include 316Ti, pure titanium, or Hastelloy.

IV. Typical Applications of Magnetostrictive Level Gauges
1. Petrochemical Process Level Monitoring
2. Oil-Water Interface Measurement
3. Oil Tank Farms
4. Gas Stations
5. Chemical Production and Storage

V. Appearance and Installation Method of Magnetostrictive Level Gauge

Figure A: Used in conjunction with the magnetic flapper (using the float of the magnetic flapper), attached to the outside of the magnetic levitation cylinder.

Figure B: Top-mounted threaded connection.

Figure C: Top-mounted flange connection (can be installed on the flange on the tank top or the top of the outer levitation cylinder).

VI. Working Principle of Magnetostrictive Level Gauges

The Hongqi self-controlled magnetostrictive level gauge primarily utilizes the physical properties of magnetostriction for measurement, unaffected by changes in the dielectric constant, temperature, or pressure of the medium. Inside the non-magnetic sensing tube is a taut magnetostrictive wire.

(1) The circuit unit emits a current pulse along the magnetostrictive line;

(2) This generates a ring-shaped magnetic field around the magnetostrictive line;

(3) The level float or interface float contains a set of permanent magnets;

(4) Their own magnetic fields magnetize the magnetostrictive line axially. When the current magnetic field and the magnetic field of the magnets are superimposed, the magnetostrictive line at the float position will generate an instantaneous torque;

(5) Simultaneously, a return pulse is generated, which is transmitted along the magnetostrictive line to both ends, one end to the top of the sensing tube and the other end to the bottom of the sensing tube. The pulse wave returning to the top is received by the transmitter electronic unit. Since the propagation speed of the pulse wave is a constant value, the electronic unit only needs to use the time difference between the initial pulse and the return pulse to calculate the position of the magnet in the float, thereby obtaining precise level and interface position.

VII. Actual installation photos of the magnetostrictive level gauge.