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ELETTROTEC s.r.l.
Pressure and Vacuum switches

Pressure and Vacuum switches

Product catalog summary

Specifications and Procedures:
The document outlines detailed procedures for setting up pressure and vacuum switches, focusing on adjustments for rising and falling pressures. It highlights the use of tools like pneumatic or hydraulic pressure generators, alarm devices, and precision gauges for accurate calibration. Adjustments are made using a screwdriver on the pressure switch's adjusting screw, with clockwise rotation increasing the pressure or vacuum value.

Hysteresis and Adjustment:
Hysteresis is defined as the difference in bar between the intervention of the pressure switch and the resetting of the contact. Examples illustrate hysteresis with specific pressure values for both rising and falling adjustments.

Conversion Tables:
Conversion tables for pressure and temperature units are included to facilitate understanding across different measurement systems.

Material Selection Guide:
A guide for selecting diaphragm/seal materials is provided, classified according to ASTM-D 1418/2016, with compatibility information for various materials and temperature ranges.

Technical Data and Recommendations:
The document outlines general technical data, including recommended tightening torques for different materials and configurations. It stresses verifying product suitability for specific applications and the impact of improper torque on the switch's mechanical life.

Batch Code and QR Code Information:
Each product is marked with a QR code for batch identification, allowing users to trace production details. The batch code reading system includes production year and week.

Compliance and Warranty:
Elettrotec pressure switches comply with CE directives where applicable. The document notes that Elettrotec reserves the right to modify products or cease production without notice, and it is the user's responsibility to ensure product suitability through field tests.

Overview:
This document provides technical specifications and operational guidelines for Elettrotec pressure switches, specifically focusing on the PMN series. It includes details on hysteresis, pressure settings, and various configurations available for different applications.

Specifications:

Pressure Switch Type: PMN10A, adjustable with push-on terminals.
Pressure Range: 0.1 to 300 bar, depending on the model.
Materials: Options include anodized aluminum, brass, zinc-plated steel, and stainless steel 316.
Temperature Range: -40°C to +140°C, depending on diaphragm/gasket material.
Electrical Protection: IP 54, IP 65, and IP 67 available.
Certifications: ATEX, R.I.N.A., LLOYD’S, IMQ, UL.

Operational Guidelines:

Hysteresis: The document explains hysteresis in pressure switches, where the switch does not immediately return to its initial state after pressure changes.
Set-Up: Pressure switches are factory-set but can be adjusted for specific applications.
Usage Recommendations: Users must verify product suitability for specific applications, including material compatibility and field testing.

Product Variants and Options:

Contact Types: Normally open (NO) and normally closed (NC) contacts are available.
Diaphragm/Gasket Materials: Options include NBR, FKM, Silicone, HNBR, Neoprene, EPDM, and stainless steel.
Thread Options: Various thread types are available, including BSPT, BSPP, and NPT.
Special Features: Options for gold-plated contacts, oxygen degreasing, and gas testing are available.

Warnings and Limitations:

Pressure switch contacts can be damaged by strong shocks or high vibrations.
Technical data may change without notice, and empirical values may not apply to all cases.

General Overview:
This document provides technical specifications and ordering information for various models of adjustable pressure switches manufactured by Elettrotec. It includes details on models such as PML, PPL, PSK, MPS, and PHP, each designed for specific applications and performance requirements.

Specifications:

Models and Options: The document outlines different models like PML, PPL, PSK, MPS, and PHP, each with specific options such as gold-plated contacts for low current, set-point adjustments, and connectors with LEDs at various voltages.
Pressure Ranges: Each model has a defined pressure range, for example, PML10 ranges from 0.5 to 10 bar, while PSK360 ranges from 100 to 360 bar.
Materials and Construction: The switches are constructed using materials like anodized aluminum, stainless steel, and brass, with diaphragms made from NBR, HNBR, and other materials suitable for different temperature ranges.
Electrical Specifications: The switches support a maximum voltage of 250 Vac and have varying current capacities depending on the model.
Protection and Durability: The switches offer protection ratings up to IP67 and have a mechanical life of up to 1,000,000 cycles.

Procedures and Standards:

Compliance: All products comply with Directive 2014/30/CE.
Ordering Information: Detailed instructions are provided for ordering, including model type, options, diaphragm material, and connector type.
Installation and Use: Users are advised to verify the suitability of the products for their specific applications, including material compatibility and field testing.

Recommendations:

Ensure compatibility with application requirements, especially in terms of pressure range and material compatibility.
Consider environmental factors such as temperature and vibration that may affect the performance and durability of the pressure switches.
Follow the provided guidelines for installation and maintenance to ensure optimal performance and longevity.

Warnings:

Pressure switch contacts can be damaged by strong shocks or high vibrations.
Technical data may change without prior notice, and users should verify the latest specifications before use.

Catalog excerpts

PRESSIONE / PRESSURE Pressostati e Vuotostati Pressure and Vacuum Switches CONTROL DEVICES FOR FLUIDS

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PARTI ROSSE - ATTESA TRADUZIONE TARATURE IN DISCESA E SALITA SET-POINT ADJUSTMENT Utilizzare un opportuno generatore di pressione pneumatico o idraulico, un dispositivo di segnalazione acustico o visivo da collegare ai contatti elettrici, per verificare l’intervento del pressostato, un manometro di precisione in classe 0.5. Il valore di taratura desiderato deve essere impostato a metà del campo di lettura del manometro. Esempio: se si deve tarare un pressostato a 5 bar si deve utilizzare un manometro con campo scala da 0 a10 bar. Use a suitable pneumatic or hydraulic pressure generator with an...

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GUIDA ALLA SELEZIONE DELLA MEMBRANA/GUARNIZIONE GUIDE TO SELECTING THE DIAPHRAGM/SEAL CODICE DI MEMBRANA/GUARNIZIONE / DIAPHRAGM/SEAL MATERIAL ID Classificazione secondo ASTM-D 1418/2016 - According to ASTM-D 1418/2016 N copolimero butadiene acrilonitrile / copolymer butadiene acrylonitrile gomma fluorurata polimetilene / fluoro rubber of the polymethylene terpolimero etilene propilene / terpolymer ethylene propylene polimero cloroprene / polymer chloroprene silicone / sylicon copolimero butadiene acrilonitrile idrogenato / copolymer butadiene acrylonitrile Hidrogenated copolimero butadiene acrilonitrile...

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ESEMPIO LETTURA CODICE BATCH CODE READING I pressostati Elettrotec sono conformi alla direttiva “CE” ove quest'ultima sia applicabile Elettrotec pressure switches are in compliance with “CE” directives where applicable LOGO ELETTROTEC ELETTROTEC LOGO MODELLO MODEL DATI ELETTRICI ELECTRICAL DATA A-Lunedì / B-Martedì / C-Mercoledì D-Giovedì / E-Venerdì A-Monday / B-Tuesday / C-Wednesday D-Thursday / E-Friday CODICE INTERNO INTERNAL CODE Tutti i pressostati Elettrotec sono “MADE IN ITALY” All Elettrotec pressure switches are “MADE IN ITALY” ANNO DI PRODUZIONE PRODUCTION YEAR SETTIMANA WEEK Il QR...

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DATI TECNICI GENERALI GENERAL TECHNICAL DATA PRESSOSTATO A MEMBRANA, CONTATTO NC / MEMBRANE PRESSURE SWITCH, NC CONTACT Vite di regolazione / adjusting screw Fast on di collegamento / push on terminal Molla / spring Porta contatti / contact holder SENZA PRESSIONE WITHOUT PRESSURE CON PRESSIONE WITH PRESSURE Disco di contatto, chiuso / contact plate, close position Membrana / membrane Corpo Ch 24 / body Sw 24 PRESSOSTATO A MEMBRANA, CONTATTO NA / MEMBRANE PRESSURE SWITCH, NO CONTACT Vite di regolazione / adjusting screw Fast on di collegamento / push on terminal Molla / spring Porta contatti /...

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Taratura in salita e Isteresi / Rising set up and Hysteresis Pressione in bar relativi /Bar pressure Int. chiuso / Switch OFF Taratura / setting point Ripristino / hysteresis Immaginiamo ad esempio di utilizzare un pressostato tipo PMN10A tarato in salita a 8 bar. A pressione atmosferica l'interruttore elettrico è aperto ( bollino rosso=interruttore aperto). La pressione sale gradualmente e l'interruttore commuta a 8 bar ( linea arancione, bollino verde, interruttore chiuso). Quando la pressione scende, l'interruttore non si riporta nello stato iniziale immediatamente ma dopo un tempo di “x”...

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Pressostati Pressure Switches CONTROL DEVICES FOR FLUIDS

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ESECUZIONI SPECIALI - PRESSOSTATI CON PROTEZIONE ELETTRICA IP67 SPECIAL EXECUTIONS - WATERPROOF IP67 PRESSURE SWITCHES CONNESSIONE ELETTRICA / ELECTRIC CONNECTION Deutsch femmina Deutsch maschio Deutsch female Deutsch male Flying leads 4 cables Flying leads 2 cables DEUTSCH FEMMINA DEUTSCH MASCHIO DEUTSCH FEMALE DEUTSCH MALE FLYING LEADS 2 CABLES FLYING LEADS 3 CABLES FLYING LEADS 4 CABLES PRESSOSTATO PRESSURE SWITCH PS Pag. 15 I pressostati vengono prima tarati in sede al valore richiesto. Per altre esecuzioni speciali contattare il nostro ufficio commerciale. Pressure switches must be set in...

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PRESSOSTATI / PRESSURE SWITCHES MATRICE PRODOTTI / SELECTION MATRIX Pagina /Page Caratteristiche generali / General data Contatto NA / NO Contact Contatto NC / NC Contact Contatto SPDT / SPDT Contact Esecuzione a membrana / Membrane execution Esecuzione a pistone / Piston execution Regolabile / Adjustable Isteresi fissa / Fixed hysteresis Isteresi regolabile / Adjustable hysteresis Pressione di lavoro / Working pressure PSM PMC PPC PPC...D PML PPL PSK MPS PHP PHC PSP PMC...D PPCF PPCF...D 70 - 200 mbar 200 - 480 mbar 480 - 900 mbar 900 - 1600 mbar 1600 - 3400 mbar 3400 - 6200 mbar Pressione statica...

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PROTEZIONI ELETTRICHE / ELECTRIC PROTECTIONS PRESSOSTATI / PRESSURE SWITCHES PMN PMM PM250 MS Pagina /Page Protezione IP 54 / IP 54 electric protection CAP 1 PSM PMC PPC PPC...D PML PPL PSK MPS PHP PHC PSP PMC...D PPCF PPCF...D Protezione IP 65 / IP 65 electric protection CAP 3 Protezione IP 67 / Cap 14 + Cavi + Connettore IP 67 electric protection Cap 14 + Flying Leads + Connector DATI ELETTRICI / ELECTRIC DATA Tensione di alimentazione / Power supply Corrente massima / Max. current Contatti argentati / Silver plated contacts Contatti dorati / Gold plated contacts Isteresi fissa / Fixed Hysteresis...

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PRESSOSTATI REGOLABILI CON CONNESSIONE A FAST-ON Adjustable pressure switches with push-on terminal Vite di regolazione Adjusting screw Tensione massima 48 Vca/cc Intensità di corrente resistiva 0.5 (0.2) A Campo di temperatura -40°C...+140°C (in funzione della membrana/guarnizione) Max. n° di interventi a 25°C 200/1’ (membrana) Max. n° di interventi a 25°C 80/1’ (pistone) Protezione fast-on IP 00 Protezione con CAP 1 - CAP 10 IP 54 Protezione con CAP 3 IP 65 Corpo portacontatti PA 66 Vita meccanica 106 cicli Prova di rigidità 1500 V - 10 mA - 10” Coppia di serraggio consigliata max. 4 Kgm vedi...

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PRESSOSTATI REGOLABILI CON CONNESSIONE A FAST-ON Adjustable pressure switches with push-on terminal SIGLA DI ORDINAZIONE / HOW TO ORDER PMN Opzioni / Options SM - T... - T...D - G - SG - TG - CAP3 Membrana / Diaphragm vedi tabella membrana / guarnizione see diaphragm / gasket table Contatto (senza pressione) / Contact (without pressure) A-C Filettatura / Thread G1/8 BSPT conica/taper G1/4 BSPT conica/taper M10x1 conica/taper M12x1,5 cilindrica/parallel G1/4 BSPP cilindrica/parallel G1/8 BSPP cilindrica/parallel 1/4” NPT conica/taper 1/8” NPT conica/taper SPIEGAZIONE DELLE SIGLE DI ORDINAZIONE...

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Pressure and Vacuum switches

Pressure and Vacuum switches

Catalog excerpts

All ELETTROTEC s.r.l. catalogs and technical brochures