The F490 is a versatile, loop powered Multi Purpose Indicator which displays the actual process value, range and loop current. Besides the focus on level, temperature and pressure applications, the F490 can also work with other measuring units, such as %, mA, RPM and more. Therefore, the F490 is a versatile indicator that suits many applications.

At the F490, the input circuit is separated from the backlight circuit. It is designed in such way that it does not influence the intrinsically safe circuit to which it is connected.

The F490 accepts 4 – 20mA input signals from a wide range of process instruments, including flow (linear or square root), level, pressure and temperature transmitters. All these process parameters can be displayed in their own engineering units. Thanks to its ruggedness, the F490 withstands extreme weather conditions such as rain, snow, sun, sandy deserts, salty atmospheres and temperatures between -40°C/-40°F and +80°C/+178°F without the need for expensive protective cabinets. Moreover, all products in the F-series are robust by design: even a truck can stand on them.

Hazardous area information

The F490 is certified according ATEX, IECEx and CSA for use in Intrinsically Safe applications with an ambient temperature of -40°C to +70°C (-40°F to +158°F).
ATEX markings:
Gas: II 1 G Ex ia IIC T4 Ga
Dust: II 1 D Ex ia IIIC T100°C Da
IECEx markings:
Gas: Ex ia IIC T4 Ga
Dust: Ex ia IIIC T100°C Da
CSA c-us 

IS Class I/II/III, Division 1, Groups A to G.
Ex ia IIC / Class 1 Zone 0 AEx ia IIC T4.