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Applications: |
| TAG Level Switches are designed to detect the presence of different materials accrue in the surroundings of the electrode’s position. Materials can be any fluids, semi- fluids, powders and granules, conductive or non-conductive. The electrode may be installed in free air or closed vessels.
Vessels may be metallic or non-metallic pipes or reservoirs.
Any material sticking to it does not affect the function of the sensing unit |
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Operating principle: |
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TAG operates on the basis of RF absorption measurement in electrode environment.
The electronic unit generates a continuous sinusoidal wave applied to the electrode
creating a field around it.
RF environment absorption changes (electrical loss) around the electrode are reflected on changes of the generator supply current.
Such a change, when converted to voltage, is the data compared to reference voltage.
Reference voltage will be adjusted as is described in the setting-up description.
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Purposes & applications: |
| TAG level switches are designed to regulate (generate pumping commands) and/or signal the level of various materials in containers (I.e. grains in silos, water in reservoirs, feeding plastic raw materials to extruders, oils and chemicals in various containers) |
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Indicate the presence of material at a fixed place.
To enable material in container to reach a predetermined level.
To prevent material in container to go lower than a predetermined level.
To keep material within 2 fixed levels (liquid in tanks, material in bins etc.)
To prevent pumps from dry-running.
Overflow protection in water pools, liquid containing (e.g. beer) tanks etc. |
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| Materials: |
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Pigments for the color industry.
Colors in containers and industrial processes.
Glues and adhesives on watery and non watery basis (such as in paper industry, laminates, gluing metal films on plastic).
Various chemicals in industrial processes and storage tanks.
Impregnating materials in impregnation vessels.
Cement, flour, etc. in tanks and tankers.
Level of stones, sand, lime and aggregates in silos at quarries and in ready-concrete plants.
Fly-ash and settled ash.
Plastic raw material.
Control of liquefied cryogenic gases (i.e. fluid nitrogen at -220°c).
Control of level in oil (mineral and organic) tanks and tankers.
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| Special conditions: |
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Very corrosive materials (bromines and compounds, hydrochloric acid, chlorine, etc).
Materials in high temperature of 250°c, (reactors, and furnaces).
Pharmaceutical process
Distinguish intrusion of oil in water / water in oil
Liquid – liquid interface separation.
Keep water contents in material (such as water content in margarine).
Control of compensating water.
Foam detection and differentiation of foam from liquid.
Detection of liquids in accurate point.
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Technical specifications: |
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Power supply to control boxes: 24 / 110 / 220 VAC. 24 VDC.
Frequency: 50/60 Hz*
Voltage between control box and sensing unit in the standard set: 7-19 VDC *
Working currents in the standard set: 0.5MA-2MA *
Short circuit current: 12MA* |
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| A twin cable connects the sensing unit with the control box. (In remote system)
The distance between control box and sensing unit is almost unlimited. |
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| Output relay 1 changeover, contact 5A 250V AC, 5A 24V AC/DC
Response time: 0.1 sec |
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| Operation pressure: -1 to +10 bar,)Optional up to 60 bars)
Degree of protection for sensing unit: IP – 67
Degree of protection for control box “weather proof” IP-67 |
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| Ambient temp: -30° to +70°C, Media temp: -30° to +70°C (optional up to +1300°C)
PTFE feelers – 50?Cto +200?C, Operation pressure: -1 to +10 bars |
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| Thread size – 1/2", 3/4", 1", 1.1/2" – BSP |
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