RIL220 Level switch with two float Riels Instruments - 5 Pages

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RIL220 Level switch with two float Riels Instruments

Catalog excerpts

LEVEL SWITCH WITH 2 FLOATS LEVEL Immersion level controller with 2 control points Tutti i dati ed i contenuti di questa scheda sono di proprieta esclusiva di Riels Instruments It can be used for dirty liquids, water, petroleum, cutting oils, and tolerates the presence of metal and ferrous particles, since the float does not hold a magnet and is integral with the rod. The required length can be obtained simply by cutting the steel rod, using an ordinary pipe cutter; or the switching point can be varied by using a float with through hole allowing the required liquid control point to be modified whenever necessary One float can operate just one Reed (min. or max. level), or two Reeds (min. and empty and extra max. level) thus meeting the most complex needs. Total safety since the electrical part is completely separate in the tank side and perfectly sealed with respect to the external side by means of ultrasonic welding and resin coating of the pins. The nylon-glass body is very strong and very resistant with respect to chemicals, and is ideal as an insulating container for the Reed contacts. The RIL220 come standard with rods suitable for control of a max. measurement of 500 or 1000mm. To obtain specific measurements, refer to the table on the next page. They can be ordered already arranged for the control of predetermined measurements. The RIL220 range has a head which holds two control rods and two floats. Each control rod can commutate the signal of 1 or 2 Reeds (with single or exchange contact). Each head can therefore contain from 2 to 4 Reeds. The most suitable system can chosen for each rod. In case of excessively dense liquids the two floats can be supplied entirely separate from each other to prevent rod 1 from undergoing friction with the float of rod 2. Fixing diagram Through Float On request the float can be supplied with through hole and therefore be positioned in the required position without having to cut the rod (which can therefore be as long as the height of the tank). If necessary, the liquid control point can be subsequently be modified as required by simply moving the float. IP65 CONNECTION HEAD WITH 6 POLARITIES Indispensable for use with systems providing for 4 to 6 polarities.

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Connection rod cutting table (N.B. : Carry out the cutting measurement with the rod in traction with respect to the body) Tutti i dati ed i contenuti di questa scheda sono di proprieta esclusiva di Riels Instruments

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Tutti i dati ed i contenuti di questa scheda sono di proprieta esclusiva di Riels Instruments EXCHANGE EXCHANGE EXCHANGE Model CONNECTION    ELECTRICAL CONTACTS    REED REED REED REED TEMPERATURE PRESSURESTD    PLC S2+S2 FLANGE a 3 o 2 HOLES Closed in absence of liquid Closed in presence of liquid Special min. empty

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IMPORTANT The electrical characteristics of the reed contacts, given in the descriptive tables, are supplied by the manufacturer. If the level indicator is connected to an inductive, resistive or capacitive load or lamp, permanent or temporary sticking of the contact may occur for particular load values, thus compromising its proper operation. It is advisable to appraise the nature of the load before connecting the level indicator. After identifying the type of load the level indicator will be connected to, a contact protection circuit must be included between the indicator and load,...

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CAPACITIVE AND RESISTIVE LOAD Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments Unlike the inductive load, in this case it is the current peaks caused by the charge and discharge of the capacitances that can cause faults in the reed contacts. When a capacitive load is commutated (e.g. even just the capacity of the cables) a discharge of strength depending on the capacity and length of the cables (considered as a series of resistances) passes through the reed contact. The discharge current can be limited by a resistance in series with a capacitor,...

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