Belt Watch a sophisticated 2-wire system to monitor conveyor safeties
 
Modern complex bulk material conveying systems contain a large number of belts having considerable lengths, involving hundreds of safety switches. Checking out the actuated switch for rectifying and putting the system back into operation, therefore, becomes a long drawn out process resulting in huge production loss.
 
While some relief was provided by indicating flags or lamps fitted on the individual switches, it was imperative to provide an arrangement to enable the operator in the remote control room to know immediately the location of the ‘operated’ switch. So far, this was being achieved by providing the ‘Diode Plates’ inside the switches to identify the location of the ‘operated’ switch by audio-visual display in the control room with suitable control circuitry. The biggest disadvantage of this system was the necessity to lay multi-core cable along the conveyor. More the number of switches, more was the number of diodes per switch & consequently more number of cores in the cable.
 
Jayashree has now introduced “BELT WATCH “- the sophisticated monitoring system that is simple, cost effective and most importantly-highly reliable.
 
Remon Electrodynamic Speed Switch
Speed dependent contact actuation by eddy current torque results in instant response even to small speed changes. Rotor and actuating stator mounted on sealed pre-lubricated bearings for smooth operation over long service periods. Spring steel contacts with Silver-Cadmium alloy tips for wear free circuit interruption. Actuation speeds from 30-3000 RPM in 6 ranges. It also has high repeat accuracy. Settings are easily adjustable at site and also feature heavy duty flexible coupling. Threaded entries for compression type cable glands. Epoxy painted by powder coating technique. Effective sealing provided by specially designed gaskets for the cover and shaft entry. Built in terminal box incorporating moulded terminals for wiring/looping. Screws captive in T.B cover to ensure proper retightening after opening for inspection/wiring etc. Standard/ Flameproof enclosure.
 
Remon Centrifugal Speed Switch
Rotor mounted on sealed pre-lubricated ball bearing for smooth operation over long service period and carries ball bearings mounted Governor mechanism for friction free speed dependent actuation of two precision micro switches each with one C/O contact. Actuation speed from 100-3000 RPM in 4 ranges. High repeat accuracy. Speed setting easily adjustable at site. Heavy duty flexible coupling. Threaded entries for compression type cable glands. Epoxy painted by powder coating technique. Effective sealing provided by specially designed gaskets for the cover and shaft entry.
 
Pull cord and belt sway switch.
Switches available in Die Cast Aluminum enclosures in sophisticated as well as economic versions. Switches are also available in Industrial Polymer Enclosure to withstand Chemical/ Fertilizer/ Saline (Seashore) environment. Metallic enclosures are epoxy painted by electrostatic powder coating technique. Effective sealing is provided by specially designed Nitrile Rubber gaskets for the covers and shaft entries to achieve IP65 grade of protection. SS screws captive in covers to ensure proper retightening after opening for inspection / wiring etc. Built in terminal box for sophisticated models, incorporating moulded stud type terminals for easy wiring / looping. Switching elements have Silver-Cadmium alloy tipped contacts with double break and wide contact separation for optimum switching performance.    

Contact:
Jayashree Electrodevices Pvt. Ltd.
101, Prabodhan Apartments, 64/9,
Erandwane, Pune – 411004.
Tel: 020-25437736