RF Admittance Level Sensor Switches

MOQ : 1 Piece(s)

Business Type Manufacturer, Supplier
Level Switches/Sensor RF Admittance Level Switches/Sensor
Product Code JAYCEEADMITT 3000
Port Maharashtra
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Price Basis : Ex works, Pune
GST : 18%
Freight : Extra by courier on to pay basis/ paid extra
Payment Terms : 100 % Against proforma invoice

Housing : Aluminium, weatherproof IP 67, powder coated , integral with the probe mounting Cable Entry : 1 no.s (standard) Ambinent temperate : 0 to 60 Deg c , Mains Voltage : 18 to30 VDC, Output : PNP NO/NC or Relay ,Operating Freguency : 6 KHz / 110 KHz , COAT GUARD SENSING PROBE: Mounting : Screwed BSP (standard) Or Flanged (optional) or as per specification. Sense rod : Stainless steel Shield : Stainless steel Insulation : PTFE (standard)Other on request and as per application. Operating Temp in :100 deg for the integral switching vessel unit. For higher temp remote switching unit(please consult works)


THEORY: The RF level switch operates on the basis of RF absorption measurement. The electronic unit generates a 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 generator supply current. Such changes, caused by the increase in level is amplified and used to energies the relay. The main drawback of the conventional method is that after the level has once increased and then decreased, there may be a coating left on the probe which is sensed by the instrument as though the level is still on the probe. In JAYCEEADMIT a COAT GUARD and Trance-Conductance amplifier are incorporated in the circuit having its output exactly at the same voltage and phase at all times as its input. The output is connected through the shield of the low capacitance co-axial cable to the concentric tube on the sense probe, called shield element. Since both the elements, sense and shield are exactly at the same potential and phase at all times, there is no current flow through the cable. Thus there is no change in calibration due to coating on the probe and the temperature effect of the cable.

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