Isolating Switching Amplifiers
Isolating switching amplifiers are applied for galvaically separated transmission of binary signals provided by sensors and mechanical contacts. The devices are equipped with intrinsi-cally safe control circuits and transmit binary signals from the Ex to the non Ex area Sensors according to DIN EN 60947-5-6 (NAMUR) and mechanical contacts can be connected.
Rotation speed monitors / pulse counters
In the field of control and regulation monitoring of rotary and oscillating motions is the primary task. Revs of drives or shafts as well as stroke and swivel motions can be monitored with rotation speed monitors. In order to achieve short response times for all applications, low frequencies are monitored acceding to the principle of period duration measurement and high frequences are monitored with a time window.
Analog signal Isolator - Input field side Intrinsically safe
Analog signal isolators are used to gal-vankalty separate standard current and voltage signals, to condition them and if required, to transfer them between the Ex and the non-Ex area.Many analog signal isolators are HART transmissible and support parametrization of field devices via the HART * protocol
Isolating transducers detect physical quantities and convert them mto electrical values via transmitter at the input circuit The electrical signals provided by the irjnsmiiter are professedgalvanically separated and if required transmitted between the Ex and the non-Ex area. Many isolating transducers are HART transmissible and support parametrization of field devices via the HART protocol
Temperature measuring amplifier
Temperature measuring amplifier transform signals provided by thermocouples or resistance thetmodetectors(RTD) Into standard signals of 0/2...10 VDC or 0/4...20mA
Analog signal isolator - Output field side Intrinsically safe
Analog ugnal isolators are used to galvanically separate standard current and voltage signals, to condition them and if required, to transfer thorn between the Ex and the nonEx area Typical applications are for example, the control of l/P converters (e.g. at control valves) or indicators in the Ex area. Many analog signal isolators are HART transmissible and support parametrization of field devices the HART protocol
Potentiometer amplrfiers convert the variable resistance value of a potentiometer in standard current or voltage signals. They can be connected to potentiometer in 3 ot 5 wire technology
Limit Value Indicators
Limit Value Indicators monitor value of standard current and voltage signals. They monitor over or underrange
of adjusted values and window limits (window function) and issue an alert message
Solenoid drivers supply galvanically separated as well as current and voltage limited power. Typical applications transmitter are the control of Ex i pilot valves as well as the supply of displays and transmitters.
Relay couplers galvanically separate any type of signal convert signal levels 24 VDC to 230 VAC for example, suppress interference levels and amplify signals'
The switching, processing and monitoring devices have to be fed with different currents and voltages not provided by the mains. We provide high quality power adapters, to convert the mains alternating voltage from 23O VAC to 24 VDC for example
Surge protection devices
The possibility of surges being coupled into Ihe wiriing may led to interference or even destruction of sensitive signal inputs in MSR circuits. In order to avoid downtime costs, measures must be taken tn the clow vicnity to protect the MSR devices. Special surge protection devices which are connected upstream of the corresponding interface modules, provide seamless protection against surges and are exactly tuned to the type of signals and the circuitry in use.