The Nivotester FTW325 level limit switch uses an intrinsically safe signal circuit and can be connected to conductive sensors. Its compact housing is convenient for installation on a standard DIN rail in an instrument cabinet.

Advantages

The limit switch is low-cost and suitable for conductive liquids

Linear sensor monitoring

Adjustable sensitivity range

ATEX, FM and CSA certification 

With the intrinsically safe signal circuit EEx ia IIC, the sensor can be used in hazardous areas.

Measuring range up to 200 kΩ 

The alarm relay can be converted into a changeover relay (SPDT)

Application

The limit switch can be used for liquid detection in tanks; ATEX II (1) GD EEx ia IIC is suitable for hazardous areas. Equipped with overfill protection, it is used for tank measurement of flammable or non-flammable water-polluting liquids. For pumps, it is equipped with dry-run protection. Used together with the Nivotester, it provides two-point control and point level detection.

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Source:Endress+Hauserwebsite public information