FTW325-A2A1A Endress+Hauser

Product Dimensions：

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

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.

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.

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Colour：new                                   Warranty: 12 months

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