LWS-24LT/24LR Microwave level switch 
LWS-24LT/24LR Microwave level switch has high penetration performance , Its normal and effective monitoring is not affected by environmental pollution, corrosive media and harsh working environment .
LWS-L Type B microwave level switch is installed face to face , Level switch consisting of transmitter and receiver . Transmitter team receiver transmits microwave , Receiver output when microwave is blocked by objects relay signal . Bad working environment may cause adhesion on the sensor surface , Because of the strong penetrability of microwave , The sensor can easily penetrate these contaminants to complete the measurement .
characteristic
* Strong penetrability
It is easy to penetrate and accumulate dust, and the working range can be expanded compared with the standard type 300%( High energy type ) 。
* Not affected by harsh environment
The sensor is not affected by surface scarring, combustion, steam and suspended particles.
* Simple alignment method
Wide range of launch angle, easy to install and align.
* Easy selection of monitoring mode
The emergency signal monitoring mode can be selected according to the actual needs of the site.
* Small sensor probe size
diameter 27mm The antenna measurement range of is about 100m( High energy type ) 。
* The protection grade is IP65
Microwave penetrability
When microwave encounters an object through air, some of it is reflected back, some is absorbed, and some passes through the object. The amount of microwave passing through an object depends on its composition. Generally speaking, the microwave cannot pass through the metal and is reflected back;
Water absorbs most of the microwaves.
Microwave can easily penetrate plastic, Glass ， ceramics , paper and other materials. Therefore:
one It is not suitable to detect the scattered paper material, foam polymer benzene Ethylene, and dry cement.
two Microwave can penetrate non-metallic attachments on the sensor surface. The penetration ability of microwave depends on the thickness, composition, metal content and water content of the measured object.
three Based on the high penetrability of microwave, protection windows can be added on both sides of the tank wall or installed away from the harsh environment to avoid damage to the microwave sensor caused by high temperature, hazardous materials, vibration or impact. The protective window shall be made of ceramic, Teflon plastic, anhydrous polypropylene and other materials to avoid microwave loss.
four The diameter of the detection window shall be at least sixty Mm, so that the microwave can be emitted at a larger angle.
The distance between the window and the sensor should be less than two hundred Mm, if a larger window is used, the installation distance can be further.
application
* Microwave can penetrate the paper scraps or other substances attached to the sensor surface to detect the actual level inside the tank.
* The microwave level meter can be installed at both sides of the tank wall with protective windows or away from harsh environments to avoid damage to the microwave sensor caused by high temperature, hazardous materials, shock or impact. Therefore, it can be used to measure the actual material level in severe occasions.
Adjustment steps
After sensor installation , It can be adjusted according to the following steps when the microwave is not blocked.
launcher
- After power supply , The power indicator lights up ( green ) 。
receiver
- After power supply , Microwave blocked red indicator (3) Or unblocked green indicator (4) Will light up.
- Set the measurement mode selector switch (1) Dial to BLOCK On , Then turn the sensitivity selector switch (5) Dial to L On , The potentiometer will be adjusted later (2) Rotate counterclockwise to the end ( Smaller position ) 。
- Adjust the sensitivity potentiometer (6) Move to a smaller position.
- Red output signal indicator ON(3) Will light up.
- Slowly rotate the sensitivity potentiometer clockwise (6) Until the green output indicator OFF(4) Is illuminated. This position is the action point of the material level switch. If the sensitivity is very high ( Over potentiometer position 7) Hour , Then it is necessary to switch the sensitivity selector switch (5) Dial to H On , Then adjust according to the above steps.
- If there is non-conductive deposit on the sensor probe, the sensitivity potentiometer should be (6) reduce one or two Gear.
If it is used to measure substances with high water content ( Such as wet garbage ), The sensitivity potentiometer (6) reduce 3-4 Gear.
If it is applied to the measurement of substances with strong microwave absorption ability ( Such as coal ), The sensitivity potentiometer (6) reduce five Each gear.
- After the above adjustment , The delay time can be adjusted appropriately , In this way, misoperation caused by sporadic materials can be avoided.
- If you want to set the output when the microwave is not blocked , Simply turn the measurement mode switch (1) Dial to UNBLOCK The position of the.
