LDT11 Magnetostrictive Level Transmitter
Characteristics: Using high-speed counter, with high precision which can up to one ten thousandth. Non-contact measurement, long life. A variety of output options. With reverse polarity protection. Anti-lightning, anti-RF interference. Excellent price-performance ratio. Easy installation, no need demarcate and maintain。Magnetic unit of the float uses permanent magnet material and proprietary combined technology, so the magnetic force concentrated in the line plane to make sure the control is more precise.
Profile: The design of magnetostrictive level transmitter is based on some metals (such as nickel-iron alloy) have the
characteristics of magnetostriction under the role of the intersecting magnetic field, which is called Veidemann
effect. When measuring, the sensor detector sends a start pulse on one terminal of the magnetostrictive waveguide
line, which will form a magnetic field perpendicular to the transmission line, and the magnetic field
transmits following the pulse current along the transmission line at the speed of light. Once the magnetic field
come across the magnetic field produced by the magnetic ring which is set outside the waveguide line, the
intersect magnetic field is formed. The waveguide line produces the transient tension under the role of the
intersecting magnetic field, which will make the waveguide line twisting and producing the twist wave, this twist
wave (the velocity is about the speed of sound) is running along the waveguide, and when it returns to the detector,
it produces the inverse magnetostriction phenomenon, and forms a return electrical pulse on the sensor probe. The
time difference between the transmitting initial pulse and the receiving return pulse is related to the magnetic ring
position, the transmitter transforms the time difference signal (displacement of the magnetic ring) into the standard
current or voltage signal and export. LDT magnetostrictive level transmitter includes two
parts, which are sensor parts and the transmitter
parts. The sensor is consisted of stainless steel
guide rod, magnetostrictionc line, removable magnetic circle (including permanent magnet) and electronics bay.
The sensor part converts the physical signal into the corresponding electrical signal, and then the transmitter part
convert the electrical signal into standard analog signal before output.
LDT magnetostrictive level transmitter’s installation is flange.
| Range | 50~3000mm |
| Working voltage | 24VDC |
| Max dissipation | ≦1.5W |
| Linearity | ≦0.05 |
| Resolution | ≦0.002%FS |
| Lag | ≦0.002%FS |
| T coefficient | 50ppm/℃ |
| Full range ad | 20%FS |
| Ripple | <20mA |
| Frequency response | 0.2~5ms |
| Output model | 4~20mA |
| Load resistance | 24VDC,<600Ώ |
| Insulation resistance | 100VDC, 100M Ώ |
| Install model | Flange form |
| Link model | PVC shielded cable aviation jack |
| Sensor shell | SUS304, 316L |
| E-bay material | Stainless steel |
| Side pole stuff | 0Cr19Ni9Ti |
| Environment | -10~80℃,≦85%RH,prevent from corrosive gases |
| Protection scale | IP65,IP67 |
Sản phẩm tương tự
Characteristics: It is polished, and the appearance is beautiful.
The magnetic unit material is NdFeB which is used in Space station, the magnetic structure is special,
so the magnetic beam is centered in the line plan, the strength can be sustained.
The output contact is with magnetic memory.Apply to the measurement of the level of the pressure container, corrosion resistance.
Profile
MN magnetic flap level meters adopt side mounting through a bypass pipe which is characterized by its easy installation, high stability and reliability or top mounting through a guide rod. The level meter is completely isolated between the inside and outsider cavity, and added a sealed flange at its bottom which can be opened easily to clean up dirt, impunity, etc.. One way level meters and meters adopting top mounting for its guide rod , equipped with a pressure hole in the top connected with atmosphere, are suitable for measuring level of medium at room temperature and pressure; Two-way level meters can be made with a certain operating pressure according to customers’ needs, and are suitable for measuring the liquid level of corrosive medium in places with high temperature, high humidity and high pressure. Level meters mainly consist of body of magnetic flat, display board of magnetic flat, floating ball, magnetic memory switch, ruler, etc.. In addition, an transmitter can be added according to customers’ needs.
Side mounted magnetic bundle unit through a bypass pipe is placed inside of the floating ball, while top mounted magnetic bundle unit is connected with a floating
The magnetic unit of the floating ball adopts a special magnetic group, which can still provide the required magnetic force for normal working of the transmitter even if used for a long period. Meanwhile, when the floating ball moves along a guide rod, the stronger linear magnetic field derived from the magnetic bundle unit of the floating ball, shall attract magnetic induction modules in the sensor one by one, thereby improving the accuracy rating and reducing the deviation of the transmitter.
ball. When the floating ball moves over liquid level, the magnetic bundle unit shall move along a level relay made up of a serial of magnetic module. Under the action of the magnetic unit, the magnetic module inside the level sensor shall make a corresponding action, output a changed resistor signal, and then transfer the signal into a current output signal of 4~20mA. Meanwhile, the level can be observed directly through the quartz tube, and a magnetic switch shall conduct a related action at the corresponding point, making alarming action and control output.
Main Technical Parameter
Body:
Measurement Range:0～3000mm(max.) (subject to actual goods)
Operating Pressure: Top mounting, one way, normal pressure
Two way: 1.0MPa, 2.5MPa, 4.0MPa or 6.3 MPa, etc..
Resolution Ratio: 5mm
Body Material: SUS304 or 316L
Connection Manner: Flange (subject to actual goods for special requirement)
Mounting Method: One way or two way flange（thread）side mounting
Ambient Condition: -20~80℃，≤95%RH (avoid strong corrosive gas)
Transmitter:
Measurement Range: 0~3000mm(Max.), optional
Measurement Accuracy: 5mm
Repeatability Deviation:±0.25%FS
Operating Voltage: 14~36Vdc
Maximum Power Loss: 5W
Output Signal:4~20Ma
Protective Tube for Sensor: 316L
Wiring Box: Aluminum
Load Resistance: <750Ω
Insulation Resistance: 100MΩ(500Vdc)
Ambient Condition: -20~60℃，≤95%RH，avoid strong corrosive gas
Protection Class:IP67
Magnetic Memory Switch
Contact Type: Standard Type: a couple of open&close passive contact output.
Current limiting output: with current limiting function and can be directly
input as PLC.
Active relay: extended contact output.
Contact Capacity: open/close contact: 1A /220Vac，1A /220Vdc
current limiting output:1A /220Vac，1A /220Vdc
active relay: 5A/24Vdc，1A/220Vac
Contact State: magnetic memory keeping switch
Insulation Resistor: ≥100MΩ (Under normal temperature)
Number of Action: 107 times
Enclosure Material: Alloy with oxidized surface
Ruler（Optional）
Overall Size: 2000(height)*13(width) mm
Figure Size: 5(height)*2(width）mm
Ruler Material: PVC adhesive plastics film
Characteristics: Accurate and reliable level measurement. High accuracy up to 0.1. Flexibly installation. The zero point and full range can be adjusted. Suitable for the flowing and whipping liquid. Restrict to the length of guide rod, the measurement range is narrow: 0.5–4m.
Profile
LTJ21 guide rod insert type level transmitter adopts diffusion silicon or dry ceramic capacitor as measurement unit. In process of measurement, diaphragm of probe, under action of level pressure, shall change its capacitance or resistance. The concise voltage signal shall be output after capacitance or resistance signal is enlarged by microcircuit. Finally, the signal shall be transferred into a corresponding standard current signal output of 4~20mA.
The measurement parts and transmission parts of LTJ21 are connected by the rigidity of the stainless steel
guides, it is suitable for the environment of flow rate liquid and swinging liquid. It is easy to install. But the
guide rod’s length is limited, so the measuring range is smaller. The sensors could select ceramic capacitor diaphragm,
the measurement is accurate and reliable, its accuracy class can up to 0.1.
Characteristics: It is polished, and the appearance is beautiful.
The magnetic unit material is NdFeB which is used in Space station, the magnetic structure is special,
so the magnetic beam is centered in the line plan, the strength can be sustained.
The output contact is with magnetic memory. It is suitable for measuring the liquid level which is in non-pressure
applications.
Profile: The body of the BNA11 single–pass magnetic flap level gauge and the measuring media are connected by a
bypass tube, to make the media level in the body is consistence to the external media. At the top of the level
gauge body there is opening a cited pressure hole which is used to connect with atmospheric, which is suitable
for atmospheric pressure environment. In the bottom of the body, there is adding a bottom flange, to easy
maintain (open the bottom flange and clean the precipitate).
Our company specially selected a standard selection for customers, if you need special requirement to put in,
please give us your schedule with images and tables.
Main technical parameters:
Connection type: Flange, if it is thread and non-standard, please list your figure and table.
Body material: SUS304,316L
Rule material: PVC,SUS304 rule
Working voltage: Atmospheric pressure
Temperature range: -40–100℃
Float: The float type is selected by our company.
Transmitter: You can choose MN, MH and ML transmitter.
Characteristics: It can work in different and extensive pressure. Good anti-jamming ability. More precise with permanent magnet. The sensor parts adopt the designation of integrated module: stable and reliable. High-resolution: as high as 5mm.
Profile: LTF21 Split-type Magnetic Inductive Level Transmitter’s measurement part and transmission part is connected by the cable, flexible for installation: suitable for narrow space or the circumstance where it can’t observe the values and wire after installation. In process of measurement, the ball built-in magnetic bundle unit shall move along a sensor made up of a serial of magnetic modules, under action of the magnetic unit, the magnetic module inside the sensor shall make counter point action, output a changed resistor signal, and then transfer the signal into a corresponding current output signal of 4~20mA.
Đánh giá
Chưa có đánh giá nào.