Katharometer measure the thermal conductivity of gas using four separate cells of equal resistance arranged in the form of wheatstone bridge. two of them measure the gas while the other two are selaed with a sample of pure oxygen.

Text object name or tag name used to describe objects or elements on the display panel or block diagram.

One of the best characteristics of an instrument is considered to be linearity. That is whether the output is linear to input.moreover a non linear behaviour does not essentially lead to inaccuracy.



A Form of communication protocol used widely to communicate between different PLC or DCS systems.

 HART communication system that allows more than two devices to be connected together on a single cable; usually refers to a network with more than one slave device


Its an ethernet switch which is used when many systems need to talk to many others,i.e when servers are to communicate with controllers or PLCs.




when the instrument provides a reading which is higher than the higher range specified for the instrument in the process. the instrument provides a value of more than 20mA in case of conventional transmitter which is referred to as overflow.​

The overload relay is a device that has three current sensing elements and protects the motor from an overcurrent. Each phase going from the contactor to the motor passes through an overload relay current-sensing element. The overload relay has a selectable current setting based on the full load amp rating of the motor. If the overload current exceeds the setting of the relay for a sufficient length of time, a set of contacts opens to protect the motor from damage











MultiDrop Netwrok



Network Switch






Overload Relays

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