Cable magnetostriction level gauge

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Cable type magnetostrictive liquid level meter with low power consumption MCU and high precision dig…

Products overview:

ZW - CZS seriesCable type magnetostrictive liquid level meterThe structure of the parts made of stainless steel tube (rod), magnetostrictive wire (silk) waveguide, removable float (with magnet), and other parts.In addition to the product has the characteristics of the magnetostrictive level indicator of analog output, due to the expanding its function, the use of more flexibility and stronger environmental suitability.Suitable for hydrology and water resources, water, petrochemical, electric power, biological agents, grain and oil, brewing and other industries a variety of liquid level and the accurate measurement of the interface.

Second, the working principle:

ZW - CZS series cable type magnetostrictive liquid level sensor, the sensor circuit part will inspire a pulse current on waveguide wire, wire when the current wire along the waveguide propagation in the waveguide of impulse current magnetic field generated around.Outside the sensor rod is equipped with a float, the float along the rod can move up and down along with the change of liquid level.There is a group of circular and inside the float.When the impulse current magnetic field when they met with float copper produced by the magnetic field, the magnetic field around the float is changed so as to make the wire made of magnetostrictive materials waveguide in float position to produce a torsion wave pulse, the pulse at a fixed speed along the waveguide wire back and detected by the detection institution.By measuring the transmitted pulse electric current and time lag of the torsion wave can accurately determine the position of the float is located on the surface of the liquid position.

Three, structural components:

ZW - CZS series cable type magnetostrictive liquid level meter using standardized design, structure is very simple, only consists of three parts:

Inspcetion in 1, 360 degrees;

2, sensors (pressure magnetic sensor and sensing tube);

3, thanks to the intelligent electronic device, the intelligent programming, with LCD display, can show the overall level, interface level, and temperature of output electric signal, the actual liquid level value, temperature, and with the actual level of the deviation of the value, the device is convenient user order spare parts and reduce the amount of spare parts.

Four, applications:

1, all kinds of oil, liquefied petroleum gas storage tank of liquid level, interface and temperature real-time measurement and monitoring;

2, gas reservoir management measurement and monitoring;

3, biochemical and pharmaceutical industry of various kinds of tank process control and monitoring;

4, food and beverage processing all kinds of storage tank and liquid level of the process control, interface and measure temperature measurement and monitoring;

5, water treatment and environmental protection in the process of industrial level, interface and temperature measurement and monitoring.

Five, the main features:

1, the high accuracy: 0.01% of the full scale;

2, calibration is very simple, no real standard, just press the button or using the HART protocol;

3, for to or forget calibration values, without having to check;

4, with double chamber structure, electronic parts and terminals are independent;

5, for not to occur any error in drift and the following parameters: dielectric constant changes, gas phase component change, changes in temperature, pressure change;

6 23 m, measurement range;

7, can simultaneously measure the overall level and/or interface level, temperature and output;

8, interface measurement zui small proportion difference: 0.03 g/cm3;

9, pressure range: zui 207 bar, standard is 66 bar.

10, temperature range is - 196 ℃ to 427 ℃.

11, inside this RFI/EMI filter;

12, can replace differential pressure type, capacitance type, ultrasonic type, radar type, outer buoy type, nuclear type, band steel or steel servo type liquid level transmitter, etc.

Six, the technical parameters:

1, the digital signal output liquid level sensor:

Oil level, water level and temperature data output one to five

Measuring range: 0.2 ~ 6 m;

Repeat: precision is better than 0.001% FS.

Non line: 0.05% FS.

In distinguishing rate: 150 microns;

Output mode: Rs - 485;

Power supply: 15 ~ 30 VDC;

Explosion-proof grade: Exd Ⅱ BT5 Exia Ⅱ AT5 Exia Ⅱ BT5;

Temperature coefficient: gad: - 40 ℃ ~ 120 ℃;

Electronic storehouse: - 20 ℃ ~ 75 ℃;

Job stress: floating ball: 3.2 MPa;

Rod material: 0 cr18ni9, 1 cr18ni9ti.

2, analog signal output liquid level sensor:

Range: 50 ~ 7000 mm;

24 VDC power supply: + / - 10%;

The output format: 4 ~ 20 ma;0 ~ 5 v.0 ~ 10 v.

Working temperature: electronic warehouse: - 40 ℃ ~ + 85 ℃ (zui large range);

Rod: - 40 ℃ ~ + 110 ℃ (zui large range);

The output temperature drift: 50 PPM / ℃;

The power consumption of the product: less than 60 ma;

Working pressure: 3.2 MPa floating ball;

The output ripple: less than 20 mv;

Linear error;Better than 0.05% FS;Range of sensors is less than 300 mm, the error is less than 150 microns;

Repeatability error: better than 0.002% FS.

Load capacity: 4 ~ 20 ma output: not less than 500 Ω on load capacity;

0 ~ 5 v, 0 ~ 10 v output: zui big output impedance is less than 20 Ω;

Rod material: 0 cr18ni9, 1 cr18ni9ti, or user special custom;

Electronic pod shell material: 1 cr18ni9ti or user special custom;

Floating ball material: 1 cr18ni9ti, cr17ni12mo2 0, 0 cr17ni14mo2;

Connection: M18 * 1.5, 1.5, M20 3/4-16 unf - 2 a (or the user special customization);

Explosion-proof type: Exd Ⅱ BT5.

Seven, connection note:

1, wiring to avoid the large capacity of transformer, motor or interference sources.

2, for explosion-proof type, in order to ensure explosion protection performance, must be in accordance with the relevant provisions of the wiring.

3, unscrewed the connector wiring end cover, the cable through the cable joint, connected to 24 VDC +, - on both ends.

4, according to the need to grounding terminals.

5, tight junction box of the wiring end cover.

Eight, use the matters needing attention:

1, order, or before installation, the user should first understand the installation site conditions, provide installation site environment temperature, shock, vibration and pressure and size as liquid level sensor parameters such as the installation of the permissible range.

2, the application of products, anti-corrosion and function selection.

3, rod cannot bend, after use, should be put back to the product packaging tube.

4, liquid level sensor, electronic storehouse and rod, the end does not allow the big impact or vibration.

5, liquid level sensor cannot be directly used to have a chemical reaction or other damage to liquid level sensor is flammable, explosive, corrosive, steam and liquid, etc, have protective measures to protect as needed.

6 splash, liquid level sensor, electronic components but not submerged, must not let the liquid immersion to hexagon above base.

7, installed, deal with to protect electronic storehouse.

8, liquid level sensor shielded cables must avoid high-power power, radio frequency signal source, and other such as noise of the transmission line.

9 there can be no interference, sheath maerial installation place, such as mixer, into the mouth.Sheath maerial of bending force, not allowed by the larger impact or vibration.Sheath maerial inspcetion should be free to slide up and down, not is blocked by other objects.

10, level gauge must be installed vertically, the installation Angle shall not be greater than 5 degrees.Installation of floating ball markers of the hemisphere should be above the liquid level.Lower limit of a locking ring, locking ring should mark and bar at the bottom of the upper line level.

Nine, installation requirements:

1, the magnetostriction is usually installed at the top.

2, sheath maerial installation place there can be no interference, such as mixer, into the mouth.

3, sheath maerial of bending force, not allowed by the larger impact or vibration.Sheath maerial inspcetion should be free to slide up and down, not is blocked by other objects.

4, level gauge must be installed vertically, the installation Angle shall not be greater than 5 degrees.

5, the level of the steam and in inflammable, explosive, corrosive liquid such as occasion when using, must have protective measures to protect.

6, liquid level meter connection cables must avoid high-power power, radio frequency signal source, and other such as noise of the transmission line.

10 and selection considerations:

1.Level gauge selection should be consistent with the medium environment, including environmental temperature, pressure, vibration, impact, structure, material compatibility with medium, etc.

2.Measured medium at high temperature (100 ~ 200 ℃), recommend selecting out-of-band buoy type probe (selection table option B), using the side flange installation.At higher temperature (200 ~ 300 ℃), recommend selecting out-of-band buoy side bundle type probe (selection table option C), using the side flange installation.

3.Sheath maerial of both ends up and down with measurement dead zone, choosing range should be considered.

4.Gauge the size of the commonly used stainless steel inspcetion for 45 * 56 * Ф Ф 15, should choose (and more flange connection.Liquid level gauge for selection of screw thread connection, the user need since with flange or bracket installation.

Eleven, parameter table:

Twelve, selection of coding:

Note:1, please indicate when matching flange flange material matching other specifications of the flange, please provide detailed drawings; 
2, you need to provide other connection thread is in the order of money.

13, design selection and ordering information:

1, model specifications;

2, measurement range;

3, working pressure, and temperature;

4, plant material;

5, special requirements;

6, whether level device matching supply vessel flange, bolts, nuts, valves and fittings such as sealing washer, so that the correct selection.

After-sales service commitment:

Level 1, I companies sell products within twelve months appear quality problem, is responsible for free maintenance.

2, the warranty period, such as the products of our company,,, any quality problem, our company is responsible for free repair or replacement.

3, the warranty period, such as user improper use, damaged products, my company is responsible for the maintenance, charge damage parts cost.

4, after the warranty period appear quality problem, my company is responsible for the maintenance, charge damage parts cost.

5, such as user need to my company site services, to users in the province I company service personnel to reach the site within 12 hours, fujian association of foreign languages and user reach the site within 48 hours.