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Pizzato Elettrica introduces in the market of switches for potentially explosive environments a range of products that can satisfy the requirements of all the users. There are different switch series available in conformity with the directive ATEX 94/9/CE in the categories M2, 2G, 2D plus the new categories 3G and 3D (zones 2 and 22) introduced with the new regulations.
The approved products include both the position switches and the industrial safety switches with different contact blocks and manufacturers of actuators. To introduce these products on the market there’s a special brochure available which can be downloaded from the web-site www.pizzato.com.
Pizzato Elettrica is an established company with more than 20 years experience in the sectors of position switches and safety centres for machineries. The products are entirely planned and produced in Marostica - Italy in compliance with the standard ISO 9001 and they undergo the inspection by a third party for product conformity. |
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Micro Limit switches suppliers Series 8064
Position switching in Metal Series 8074 to EN 50041
Position Switches Series 8060
Position Switches Series 8070
Position Switches Series 7060
Safety Position Switch with Separate Actuator suppliers Series 8070
Position Switches Series 7070
Magnetic SensorSeries EEx RC M20
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Thermoplastic enclosure
Slow action
Max. 2 contacts
Cable
available with cable entry on side |
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Position switches for high temperature
For more than 20 years Pizzato Elettrica has been producing one of the world most wide range of position switches, protection switches, microswitches, foot switches. Pizzato Elettrica products are usually used worldwide in different industrial sectors characterized by their reliability and their quality/price ratio.
Eventually the range of products in the survey sector has been growing covering very specialized sectors such as switches in conformity with ATEX directive and switches with electronic contacts.
Among the various new products 2007 Pizzato Elettrica has introduced a new series of position switches especially studied for high temperature application. These products are characterized by their long mechanical life in relation to the working temperature, that is up to 1 million operation cycles at +180°C.
A dedicated brochure on these new products is available on the website www.pizzato.com. |
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Position switches are used wherever moving parts on machinery and plants need to be positioned, controlled and monitored.
The design details in relation to body dimensions, materials, electrical loading capacity, rated values and quality characteristics are to a great extent determined by the variety of application, from precision mechanics to heavy engineering.
Many of the position switches fulfill the requirements of the IEC 60947-5-1 product standard and can therefore also be used as position switches with safety function.
The position switches are available with snap action or slow action.
A wide variety of manufacturers of actuator heads are available. The majority of units are also obtainable with metal rollers.
The position switches are shown in the sequence of body sizes, starting with the smallest design.
Schmersal make both standard and AS-i Safety at Work safety modules.
Click here to see the AS-i models
Or for the standard models click below
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Position Sensing Solutions
Bimba offers pre-tested Position Sensing Solutions for Bimba industrial actuators. Our solutions provide a cost effective interface between the manufacturer of pneumatic actuators and electrical control systems. Our pre-tested solutions also eliminate costly, time-consuming design and fabrication required if switches are purchased separately and provide an aesthetically pleasing installation.
Both traditional Bimba switches as well as newer generations of Bimba switches are offered to allow for maximum flexibility to fit your application.
The switches perform the same functions as conventional limit switches suppliers. They can be used as position indicators, cycle counters, or to confirm operation.
All Bimba switches are designed to sense a magnet that is incorporated into the piston of the cylinder. Magnets are standard in Bimba MRS cylinders, but must be purchased as an option on other Bimba actuators.
A variety of outputs are offered for each switch family including PNP (transistor sourcing), NPN (transistor sinking), normally open contacts, and higher power triac. |
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| Our huge standard programme with its diversity of housings has the optimal solution for almost any application. The various types of workholding or the dovetail connections directly integrated into the switch mean that the switches can be fitted on almost any type of professional cylinder. Our range also includes compressed air cylinder switches for T-section cylinders. All the models can be supplied with dry reed contact with variable power capacities or in the electronic version. If you wish, we can develop completely new customer-specific sensors to meet your requirements. |
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Z/T and E.95 range position switches are suitable for sliding and hinged safety guards, which need to be closed to ensure the necessary operational security.
In combination with AES and/or AZR range safety monitoring modules all position switches class 1 shown in this chapter achieve Control Category 3 or 4 to EN 954-1.
Further applications for positions switches class 1 are most varied positioning duties. The variety of requirements to be found in practice can be met in detail by means of a wide range of actuating elements.
Design and mode of operation:
On the position switches class 1 the guarding device and the positive break NC contact are positively linked.
Schmersal make both standard and AS-i Safety at Work position switches with safety function.
Click here to see the AS-i models
Or for the standard models click below
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The range of detectors of Crouzet position is characterized by:
- A broad choice of metal enclosures or plastics
- An important range d%u2019organes of control (push rod, push rod with roller, lever, flexible device, etc%u2026.)
it possibility of connection per stuffing box, cable or suppliers of connector
- A great resistor with the accidental shocks
- A good protector with liquid projections and the streaming
- Specific sensors, protected, miniature, of precision and for severe environments
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| The outstanding feature of the Contrinex series 700 inductive proximity switch is its one-piece stainless steel housing which, at one fell swoop, manages to eliminate the most critical weakness of this type of device. Forget damaged plastic caps, forget breakdowns due to inadequate sealing; they are things of the past! These switches are also exceptional in having very long operating distances, for instance 6 mm for the size M12 embeddable version. As a further bonus, these operating distances are also achieved on non-ferrous metals, e.g. aluminum and brass. These improvements result in completely new application possibilities for traditional inductive devices, without having to forego any of their advantages. In all others ways, they are normal proximity switches with the usual data and protection functions. Embeddable and non-embeddable versions in sizes M12, M18 and M30 are available immediately. |
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| All the electronic sensors work on a non-contacting basis using industrial magnets - this includes Hall and magnetoresistive sensors. The exceptions are the gear-wheel sensors which use a ferrous gear-wheel. The advantage of magnetoresistive sensors is that the same sensor, a standard small model, can be used for different operational distances. The operational distances which can be achieved depend only on the strength of the magnet used. All the models can also be delivered with non-wearing Hall sensors. Besides the various standard models, we also manufacture customised housings to your requirements. |
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Non-contact magnetic detection proximity switch manufacturers produces a digital output. The output produced by Hall-Effect Proximity Switch sensor switches between logic low (operate point) and logic high (release point) with presence and absence of a magnet as a target. The difference between the magnetic operate and release points is called the hysteresis of the device. The built-in hysteresis circuitry allows clean switching of the output even in the presence of external mechanical vibration and electrical noise.
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| The range includes different size devices for operating pressures from 100 to 500 bars. Their main applications are in high-pressure hydraulic systems. They feature a stainless-steel housing imperviously shrunk onto a ceramic disk at the sensing face. |
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For demanding applications in high-temperature areas, inductive proximity detectors with good long-term reliability have become increasingly popular. Contrinex offers a series of embeddable and non-embeddable HT switches in sizes M8 to M50. The devices have operating distances from 2 to 25 mm, and are respectively suitable for applications up to 140°C, 150°C, 180°C and 230°C.
The executions for 140°C, 150°C and 180°C feature built-in professional amplifiers. Connections by means of a 2 m silicone or Teflon cable is standard. Other cable lengths and types are available on request.
For 230°C types, the amplifiers are built into an M12 stainless-steel housing, which is connected by means of a standard 2 m Teflon cable, and thus removed from the hot area. This cable carries a pure DC, rather than a high-frequency signal, and its length can thus be chosen freely, without having a negative influence on the switching behavior of the device, and without the need for adjustment. Connection of the amplifier is by means of a 2 m PUR cable.
All the usual protection functions, such as short-circuit, overload and voltage-reversal protection are built in. Furthermore, the devices feature good protection against environmental influences (IP 67). |
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A proximity switch is a device which causes a switching action without physical contact. SCHMERSAL proximity switches manufacturers respond to targets that come within the active range of their generated sensing fields. These units are completely self-contained, and house a field professional generator, professional amplifier, and other necessary circuitry to accomplish electronic switching.
The units are all solid state and have no moving parts that can wear out. The electronic switches are not susceptible to contact contamination, contact erosion, or material transfer as are mechanical switches.
Their service life, within their specified ratings, is virtually unlimited. The switching is insensitive to vibration, and is positive (full step function) without chatter, regardles of how slowly the target approaches or recedes from the sensor |
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Inductive proximity switches manufacturers are designed for wear-free and non-contact detection of metal objects. For this they use a high-frequency electro-magnetic AC field that interacts with the target.
Moreover uprox+ detection offer highest switching disntance with their unique professional coil concept, factor 1 and highest operational safety from the start by simple and safe mounting. |
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| These new Contrinex size M8 analog transducers are distinguished by their unusually large sensing range from 0 to 4 mm with, at the same time, excellent temperature stability between -25°C and +70°C, as well as outstanding repeat accuracy. Thus, the distances achieved using these devices are far in excess of those achieved with conventional standard detection where, in order to obtain similar detection values, a model with a diameter of at least M18 would have to be used. In addition, since intermediate digitization has been done away with, the resolution of the Contrinex devices is virtually unlimited. The use of analog sensor technology permits the realization of numerous applications. For instance, the regulated approach to end positions at minimum cost, the realization of several switch points with a single device, monitoring concentricity or the detection of vibrations. The switches are available with output voltage ranges of 0 … 5 V or 0 … 10 V. As a result of the non-linearized transfer function, the Contrinex devices are inexpensive but nevertheless efficient. Contrinex inductive analog sensors are also available in sizes M12, M18 and M30. |
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All-metal inductive proximity switches for food industry, series 700: M12
All-metal inductive proximity switches for sea-water applications, series 700: M12
All-metal inductive proximity switches for food industry, series 700: M18
long operating distance on steel and aluminium
extremely resistant |
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| There has always been an industrial demand for small and reliable proximity detectors with very long operating distances. Thanks to the CONDIST® technology, developed and patented by the innovative Swiss company CONTRINEX, inductive proximity switches with quadruple operating distance have been launched onto the market. These switches guarantee all functionalities with operating temperatures of -25 °C ... +70 °C. They are manufactured according to the strictest quality standards, and present the user with a wide range of technically interesting and economically advantageous application possibilities. Largely compatible with standard proximity switches, they are particularly suitable for targets which are normally difficult to detect, such as small or narrow objects, non-ferrous metals, wires, etc.. The range includes N.O. and N.C. types, PNP or NPN executions, as cable or connector supplier versions. Available in sizes M8 and M12, the devices are quasi embeddable, and contain all important protection functions, such as short-circuit protection, EMC and polarity-reversal protection. |
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The Swiss sensor manufacturer Contrinex, specialized in long operating distance and miniature devices, now offers a large selection of the world's smallest, fully self-contained inductive and photoelectric proximity detectors.
With housing diameters of just 3 mm up to M5, plus cuboid 5 x 5 x 25 mm formats, the sensors have electrical characteristics equivalent to larger types. In addition, they also contain all the usual built-in protection functions, such as short-circuit, voltage-reversal and overload protection, and feature high levels of EMC.
Despite their small dimensions, the inductive models offer operating distances of 0.6 to 1.5 mm. Mechanically robust, with stainless-steel housings and full potting, these devices are highly suitable for rugged applications.
The photoelectric models are available with housing diameters of 4 mm and M5, as diffuse and through-beam executions, and have operating distances from 10 to 250 mm.
These tiny sensors are ideally suited for applications where space is limited. They require no separate professional amplifiers, and are thus easier to install and considerably cheaper than equivalent fibre-optic solutions. |
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Due to their compact design Ultra Mini sensors from Pulsotronic are appropriate for applications offering little installation-space. They are used for example in medical engineering devices or other filigree applications.
Operating voltage: 10 - 30V DC
Switching distances: 0,6mm to 3mm
Max. Switching frequency 2000Hz
Designs:
Professional cylinder without thread diameter 3 to 8 mm
Cylinder with metrical thread diameter 3 to 8 mm
Square housing dimensions 5 and 8mm
Housing: Stainless steel and brass
Operating temperature: -25°C to +70°C
Protection class IP67
Output:
PNP N.O. / N.C.
NPN N.O./N.C.
>>> Different sensor versions or catalogue on request. |
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The Swiss sensor manufacturer Contrinex, specialized in long operating distance and miniature devices, now offers a large selection of the world's smallest, fully self-contained inductive and photoelectric proximity detectors.
With housing diameters of just 3 mm up to M5, plus cuboid 5 x 5 x 25 mm formats, the sensors have electrical characteristics equivalent to larger types. In addition, they also contain all the usual built-in protection functions, such as short-circuit, voltage-reversal and overload protection, and feature high levels of EMC.
The photoelectric models are available with housing diameters of 4 mm and M5, as diffuse and through-beam executions, and have operating distances from 10 to 250 mm.
These tiny sensors are ideally suited for applications where space is limited. They require no separate professional amplifiers, and are thus easier to install and considerably cheaper than equivalent fibre-optic solutions. |
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Comus can offer a complete range of proximity switches manufacturers and sensors in different technologies.
The major range is using magnetic reed switches which can be operated by a permanent magnetic. Rectangular, cylindrical and threaded housings are available in plastic as well as in metal. These can also be offered with integrated manufacturers of connectors.
Electronic proximity switches are also available using solid State Hall Effect technology.
A very interesting range are Hybrid Proximity Switches, combining the reed switch technology for sensing and the electronics for handling the higher load requirements.
A range of Economy Proximity Switches has been added for applications requiring low cost solutions.
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One for all: 2 sizes fit almost all pneumatic drives. Standard: seamless adjustment within profile slot, variants for all applications.
• Sensing, contactless and contacting
• Voltage 24 V DC or 230 V AC
• Temperature range -20 ... +120 °C
• CE-compliant
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| Yaskawa's Bestact dustproof and flood-tight manufacturer of proximity switches offer industry-compatible mounting capability with IP52-IP68 (~NEMA 2-6) enclosure ratings. These switches utilize Yaskawa's world-renowned Bestact logic and inductive rated (0.5 & 0.125HP) reed switches. General locations up to 510°F (265°C) and sensing distances up to 4.33" (110mm) are possible. They do not need a Dc power supply specifications or snubber/varistor protective devices and do not employ complicated amplifying circuitry that is needed for photo-electric/inductive proximity switches. They are ideal for corrosive, dirty, extreme temperature and gaseous Class I, Division 2 hazardous location environments where failure is not tolerated and reduced maintenance costs are of the utmost importance. Two-line wiring and latching capability are other features that are offered. |
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The principal features of the sealed inductive proximity detectors of Contrinex are:
- Absolute impermeability of the ceramic sensing face (IP 68)
- Stainless-steel housing for excellent resistance to chemical agents
- Ideal for difficult operating conditions
- Particularly suitable for the food and chemical industries, as well as on ships and oil rigs
- Available in sizes Ø 4 mm, M5, Ø 6.5 mm and M8. |
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The QUADRO-PROX series of inductive proximity switches is available with detection ranges from 0,2 up to 18 mm. The polycarbonate or metal housings with the QUADRO® (PDF) design are ideal for heavy duty applications or where space is at a premium.
The electronics have been built to conform to industry standards. Smps of 10 - 30V and PNP / NPN / Namur output configurations are all available.
Next to the standard products DIS also supplies many CUSTOMIZED inductive switches. |
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