Elettrotec float level switches are designed to meet the most complete range of application requirements in liquid level monitoring. The wide offer both of standard level switches with one or two floats and custom length executions assures greatest choice, flexibility and gives the possibility to select the best level control solution for any specific application. Custom length units may be configured with a single station, or as many as four (depending on series), in lengths up to 2500 mm.
Mounting, float and stem materials include aluminium, thermoplastic, PVC, NBR, Nylon, Hostaform, brass and stainless steel.
Different mounting styles are available such as flanges, GAS and metric thread mounting plugs. A variety of wire terminations, custom lead lengths, silicone cable jacket for high temperature applications, housings and connectors are also available.
Explosion-proof executions (ExtD) and models intrinsically safe approved (Exia) according to DirectiveATEX94/9/EC can be supplied on request.
Elettrotec level switches are particularly suitable for hydraulics, lubrication plants, pharmaceuticals, water treatment, industrial vehicles, generating sets, fluid stocking, food and beverage processing, cleaning machines and equipment.
Executions specifically approved R.I.N.A., Lloydʼs Register for marine and offshore applications are also available.
OPERATING PRINCIPLE
Elettrotec level switches operate on a direct, simple principle. The hermetically sealed reed switch housed inside the stem is actuated by a magnetic field created by a magnet equipped float. As the float rises and lowers with liquid level, the magnetic field passing the switch in the stem causes the switch to either open or close.
Elettrotec level switches are generally mounted from tank top, but some models have been adapted for side mounting. Switches will operate normally with up to a 15° tilt from vertical. Some single/double point switches operate in either a normally open (NO) or normally closed (NC) mode. Selecting the mode is as easy as removing the retaining clip and reversing the float on the stem. However, the most part is non-reversible and must be clearly ordered as NO or NC.
GENERAL SPECIFICATIONS
Max. fluid viscosity: 150cSt
Max. pressure: 10bar
Fluid specific gravity: ≥0.7kg/dm³
Electrical connection: PG09–DIN43650
Electrical protection: IP65– DIN40050
Operating temperature: -10°C to +80°C
Max. temperature with FKM seal and silicone cable: +130°C
ELECTRICAL DATA
Standard reed switches in Elettrotec level switch units are hermetically sealed, magnetically actuated, designed for reliability to millions of cycles.
Switches are normally closed/normally open(SPST) or SPDT. Each Elettrotec level switch varies in rating depending on the type of reed switch used.
