E+H Nivotester FTW325-C1A1A Conductive Point level switch

Point level switch with intrinsically safe signal circuit for connecting to conductive sensors Application

• Two-point control also for hazardous areas

• Overfill protection for tanks

• Dry running protection for pumps

• Point level detection Your benefits

• Cable monitoring up to sensor

• Adjustable sensitivity range

• ATEX, FM and CSA approval

• Measuring range up to 200 k

• Alarm relay can also be used as a second point level relay (SPDT)

• Compact housing for easy series mounting on standard DIN rail in the cabinet

• Pluggable terminal blocks make wiring easy

• Connection to different supply voltages

Function The Nivotester supplies a small amount of alternating current to the measuring point via the signal line. The cable is connected to the ground probe or the metal vessel and the probe. The voltage drops if an electrically conductive medium touches the probe. An amplifier circuit in the Nivotester causes the relays to switch.

Signal transmission The intrinsically safe signal input of the Nivotester FTW325 is galvanically isolated from the power supply and from the output. The Nivotester supplies the conductive probe with alternating current via a two- or three-wire cable and monitors the voltage of this cable. If the medium reaches the switch point of the probe, the voltage between the probe and the Nivotester is reduced. The switching of the output relays at the Nivotester depends on which fail-safe mode has been configured.

The switching state of the relays is indicated on the front panel of the Nivotester by means of two yellow LEDs. Fail-safe mode The choice of fail-safe mode affects how the relay works in quiescent current fail-safe mode. • MAX = Maximum fail-safe mode: the relay de-energizes when the level rises above the switch point (probe covered), a fault occurs or the power fails. Used for overfill protection, for example. • MIN = Minimum fail-safe mode: the relay de-energizes when the level falls below the switch point (probe uncovered), a fault occurs or the power fails. For use with dry running protection or pump protection, for instance.

Great System In.(GSI) a name synonymous with Process Control Instrumentation and Electrical and Instrument and Solution Provider have established themselves as a Quality Leader since its inception in 1998 based at Hong Kong ( China ).

For more than 26 years, we have successfully executed many prestigious orders by supplying Sophisticated Electronic Instruments and Control Systems and HT Panel and LT and Panel. Indigenization of the instruments of our product range have been in hand with our commitment to the manufacture of safe, reliable and quality instrument. Our thrust today is in the field of microprocessor based instrumentation and control systems. A knowledge inspiring and skilled arena that we are in, we are staffed to meet the dictates of the field and thus can provide various control and monitoring software packages for Instrumentation and control.

Application Gallery

Power : Feed Water (Drum Level & DP across Drum Level), Furnace Vacuum, SH Steam Temp Stage I & II (L&R), Dearator Level, Condenser Hotwell Level and REC, HP Heater Level, LP Heater Level, Gland Seal Steam Pressure, Gland Steam Temperature, Thermal Load, FD, PA and Vapor Fan Control

Oil & Gas : Platform & Pipeline, Catalytic Cracking, Distillation Columns, Blending, Reactors

Pulp & Paper : Stock Preparation, Chest Box, Bleaching

Mining : Ore Dressing, Pyro/Hydro Processing, Electrolytic Refining, Crushers, Ball Mills, Classifiers, Filters, Flotation Devices, Magnetic Separators, Calcining Kilns, Digesters, Evaporators

Food & Beverages : Evaporators, Blending & Batching, Fermenting

Steel : Blast Furnaces, Continuous Casting, Reheating Furnaces, Biological Waste Treatment, Annealing Lines Sintherization

Water & Waste Water : Filter Backwash, Chemical Feed, Clear well Level, Finished Water Pumping, Remote Workstation Monitoring, Sludge Process, Sequencing Batch Reactor Plants, Rotating Biological Contactor Plant, Sludge Dewatering, Incinerator Control, Return and Waste activated sludge pumping