Radio Frequency Based Level Switch
Leveraging on our wide experience and knowledge in this domain, our company is considered as one of the well equipped manufacturers & exporters of Radio Frequency Based Level Switch. Our offered range of level switches is in compliance with set standards and norms of industry. These switches are widely used in sugar mills, cement plants and pharmaceutical industry. Radio Frequency Based Level Switch is known for its features such as temperature resistance feature, durability and accurate results.
SENSING PROBE (No moving parts) Rigid/Flexible (No Electronics in probe)
1. Application : Solids/liquids
2. Particle Size : Dust to 50mm or specify
3. Process Temp. : 0 degree.c to 1000 degree.c (Specify)
4. Insertion Length : Mim. 100 mm to max. 6 mtr.
5. Process connection : Flange /40 NB Socket/ 20-25
6. Ingress Protection : IP-66
7. Cable connection : ½" ET Gland
8. Probe Head : Cast Aluminum IP66
9. Insulation : PTFE/CERAMIC.
ELECTRONIC UNIT (Solid State, Circuitry)
1. Power supply 220/110 V AC OR 24V AC/DC
2. DPDT Relay output rated 5 amps @ 230V AC
3. Local LED Indication (RED, GREEN, YELLOW)
4. No recalibration
5. Cable (remove from probe) 90 feet (max)
6. Ingress protection: IP-66.
Coating over sensing probe is very common
Flow star engineering sensors ignores any accumulation and coating, avoid false signals.
Liquid like tarcaol, chrome, poly Oil etc. are very sticky and accumulate over the sensing probe. Our instrument does not effect on such type of accumulation.
Temperature in process material can goes upto 1000deg.C. or more for certain applications. Flow star engineering provides suitable sensors for high temperature or ambient conditions.
Inside the vessels/tank pressure is generated for fluidizing of process materials. Under such conditions the sensor has too be selected as per pressure conditions. Flow star engineering provide suitable sensor.
For acid/ alkali application we provide PTFE/PTFE insulation on the sensing probe to avoid Erosion and these perform without any troubles.
Model FERF-200 has two parts: one is sensing probe and another is called electronic Unit. Both are connected by our coaxial cable. The sensing probe has two parts active and shield section, both insulated from each other.
Model FERF-200 works on Radio frequency principle. Oscillators generate a very low power radio frequency signals, which is equal in frequency phase and amplitude, provided to shield and active sections of the sensing probe and reference signal is taken from the ground of the electronic housing installed the nearest structure. The signals provided to the shield parts remain constant by use of a compensating circuit. The signal to the active section is not compensated i.e. it can vary. Inside empty vessel gas or suspended dust particles always present. The Signal propagation continue towards zero (vessels body). We call it free propagation inside the empty hopper, there will no change in signals. When material stars filling and goes up to the sensor and submersed some length of active part of the sensor by the material, The signal propagation still continues, but this time signal passes through the difference media, and signal will try to exhort more energy since same signal was passing earlier freely while hopper was empty & now the signal become weak in comparsion to the shield. The variations in active signals are compared with the shield signal and actuates relay by the predetermined set value with the reference of ground. We take a potential free relay change over contact for further automation/control.
|Fly ash |
| Acid |
| Alkali |
| Coal tar |
and many more