Elettrotec Equipment — Industrial Pressure Switches, Thermostats, Level & Flow Meters

The Elettrotec manufacturer

Elettrotec S.r.l. was founded in 1977 in Milan, Italy, and operates as a global manufacturer of industrial instrumentation for monitoring pressure, temperature, level, and flow of fluids. Manufacturing processes are certified under ISO 9001, ATEX, UL, R.I.N.A., Lloyd's Register, and DNV.

Mechanical Pressure Switch Design: PMN, PMM, PMC, PSM, and PSP Series

Elettrotec mechanical pressure switches are categorized by sensing element into elastic diaphragm designs (for low and medium ranges from 0.1 to 100 bar) and precision-lapped steel piston models (for high pressures up to 400 bar and hydraulic surge peaks up to 600 bar).

The compact PMN and PMM series feature spring-return normally open (NO) or normally closed (NC) contacts.

The PMC, PPC, PSM, PSP, and PM250 series incorporate a snap-action SPDT microswitch (rated up to 250 V), capable of switching both low-current PLC logic inputs (with gold-plated contacts) and contactor coils.

Versions with the CE suffix are engineered for direct manifold flange mounting without threaded adapters, while the AM suffix provides an integrated G1/4 female port for a reference pressure gauge.

Selecting Diaphragm Elastomers and Protective Caps for Process Media

Service life and leak-tight reliability of pressure and vacuum switches depend directly on the chemical and thermal compatibility of the diaphragm or piston seal with the process fluid or gas.

Elettrotec offers 5 core seal compounds: NBR nitrile rubber (mineral hydraulic oils and air from -25 to +85 °C), FKM/Viton fluoroelastomer (synthetic oils, fuels, and acids up to +130 °C), EPDM ethylene-propylene rubber (water, brake fluids, and steam), silicone (food-grade and low-temperature media

from -40 to +120 °C), and HNBR hydrogenated nitrile rubber (refrigerants and compressor oils from -30 to +130 °C).

To protect electrical terminals against moisture, oil mist, and metal swarf, switches are fitted with replaceable rubber boots CAP1 and CAP10 (IP54 protection), sealed covers CAP3, or standard DIN 43650 (EN 175301-803) and M12x1 connectors rated to IP65/IP67.

Electronic Pressure Switches EPX02, EPS and Transmitters PTL, PTH

For continuous pressure monitoring in CNC machine tools, test benches, and variable-speed pumping stations, Elettrotec manufactures electronic units across the EPX02, EPS01, EPS02, PTL, PTH, and PTE series.

The flagship EPX02 electronic switch features a 4-digit LED display rotatable across 2 axes, 2 independent PNP or NPN transistor switching outputs, and a 4–20 mA analog output.

Industrial pressure transmitters PTL (monolithic Al2O3 ceramic cell covering -1 to 400 bar) and PTH/PTE (piezoresistive and thin-film AISI 316L stainless steel sensors up to 600 bar) deliver measurement accuracy within 0.5% of full scale and connect via standard 4-pin M12x1 or DIN 43650 plugs.

Filter Clogging Indicators (PDE, PDV) and Vacuum Switches (VMC, VSM)

Clogged pressure or return-line filter elements in hydraulic and lubrication systems trigger bypass valve opening, allowing unfiltered oil to reach precision servo valves.

Elettrotec PDE differential pressure switches and PDV visual-mechanical indicators monitor the pressure drop across the filter head (trip thresholds from 0.3 to 12 bar under static line pressures up to 250 bar), signaling timely cartridge replacement.

For vacuum lifters, packaging machines, vacuum pumps, and degassing chambers, adjustable diaphragm vacuum switches across the VMC, VCN, VCM, VSM, and VS series provide setpoint adjustment from -0.1 to -0.95 bar with high switching repeatability.

ATEX Explosion-Proof Pressure and Level Instruments for Hazardous Areas

In oil and gas, petrochemical, paint manufacturing, and marine applications, Elettrotec supplies certified explosion-proof instrumentation.

Mechanical pressure switches EPM (diaphragm), EPP (piston up to 400 bar), and vacuum switches EVM are housed in flameproof cast aluminum enclosures certified to ATEX II 2GD Ex d IIC T6 with IP66 ingress protection.

For storage tanks containing solvents, fuels, and flammable liquids, Elettrotec provides explosion-proof float level switches series LX (Ex d enclosure) and intrinsically safe level probes series LXI (Ex ia IIC T6 circuit) with immersion stems up to 2500 mm and marine type approvals from R.I.N.A.,

Lloyd's Register, and DNV.

Bimetallic and Capillary Thermostats: TBF evo, TBG, TER, NTB, and TCR

Monitoring the temperature of hydraulic oil, coolant, and lubricating oil prevents additive breakdown and thermal seizure of actuators.

Compact screw-in thermostats TBF evo, TBG, EBT, and EBC utilize a fixed-temperature bimetallic disc (operating from +30 to +120 °C in 5 or 10 °C increments) that opens or closes the electrical circuit without external power.

The NTB, NTBC, and NTR series feature a 360° rotatable upper housing with an M12x1 connector, simplifying cable routing after tightening the hex body into a manifold.

The immersion thermostat TER offers continuous external dial adjustment from 0 to +120 °C (up to +300 °C in special versions), while the TCR model integrates an onboard power relay to directly drive oil cooler fan motors.

Magnetic Float and Continuous Level Switches: LM1, LMM1, GRL, and SL1

Electromagnetic float level switches LM1, LM2, and LMM1 mount vertically onto tank tops (G1 to G2 threads or flanges) to monitor 1 to 4 discrete fluid levels down to 3000 mm depth.

Sealed inside a guide stem made of brass, AISI 316 stainless steel, or PVC are reed contacts actuated by a permanent magnet housed inside a Buna-N foam (NBR), AISI 316 stainless steel (FIA, TIA, GIA), or PVC (GPA) float.

In the combined LM1A…T series, the bottom of the stem incorporates an additional bimetallic thermal switch or a Pt100 RTD probe, enabling simultaneous oil level and temperature monitoring through 1 tank opening.

For continuous 0 to 100% level gauging, SL1, SL2, SLM1, and SLM2 probes pair a reed-resistor chain with a CVS1/CVS2 head converter (4–20 mA output).

Variable-Area Flow Meters IF, TFM, FMP and Flow Switches FPR, CFV, EPF

Protecting water-cooled CNC spindles, laser resonators, welding guns, induction furnaces, and bearing circuits against coolant loss is achieved with Elettrotec flow meters and switches.

Variable-area rotameters IF…V, IF…VE, IF…V2E, TFM, and panel-mounted FMP units (ranges from 0.25 to 300 l/min) feature a conical borosilicate Pyrex glass tube with direct visual reading and 1 or 2 adjustable reed switches.

For viscous oils, flow meters are calibrated for the fluid kinematic viscosity (up to 150–200 cSt), while spring-loaded EPF flow switches allow installation in any spatial orientation.

On main pipelines from 1 to 8 inches in diameter, FPR paddle flow switches with interchangeable brass or stainless steel paddles provide reliable flow interlocking.

Elettrotec S.r.l. Corporate Identity and Excluded Homonyms

Italian manufacturer Elettrotec S.r.l. (founded in 1977 in Milan, Via Jean Jaurès 12, with branches in Shanghai, Florida, and Tunisia) specializes exclusively in industrial fluid control instrumentation for pressure, temperature, level, and flow (Fluid Control Equipment).

The company integrates the historical Italian instrumentation lines Elettro Instruments and SIE under the unified Elettrotec brand and catalog.

Elettrotec S.r.l. is completely unrelated to local electrical installation contractors named 'Electrotec', building wire and cable distributors, consumer wall sockets, or domestic garden water pump switches.

We supply strictly genuine industrial sensors, switches, and accessories manufactured by Elettrotec S.r.l.