NEW: E490 Explosion Proof - Multi-Purpose Indicator

Robust indicator for a wide range of applications

The E490 is a versatile, loop powered multi-purpose indicator to display the actual process value, range and loop current. Besides the focus on level, temperature and pressure applications, the E490 can also work with other measuring units, like %, mA, RPM and even the possibility to create a custom unit with max. 8 characters.

The input circuit is separated from the backlight circuit and has an ultra low voltage drop < 1.5V DC, allowing easy installation in almost any 2-wire, 4–20mA loop. The measuring unit to be displayed is simply selected through an alfa-numerical configuration menu. The E490 accepts 4 - 20mA input signals from a wide range of process instruments, including flow (linear or square root), level, pressure and temperature transmitters. Making it the perfect fit for almost any explosion proof application where you want to display an analog process value.

Above and beyond requirements

Robust and weatherproof

The robust solid die cast aluminum and the stainless steel 316L E-Series housings are designed to guarantee safety. It takes the E490 Explosion Proof Multi-Purpose Indicator beyond the legal requirements for hazardous areas. In the harshest environmental conditions, as found in deserts and maritime climates with extreme temperature fluctuations, the durable E-Series consistently delivers accurate measurements.


The E490 is extremely practical in use. The touch-through-glass keypad allows for a safe and effortless operation of all functionalities without having to remove the glass cover. The menu, display and navigation structure are designed according to the Fluidwell “know one, know them all” principle, which enhances easy and intuitive control of various Fluidwell totalizers, flow computers and other displays.

Touch-through-glass keypad

Your advantages

  • Universal loop powered indicator.
  • Input signal: Galvanically isolated 4 - 20mA with ultra low voltage drop < 1.5V DC, allowing easy installation in almost any 2-wire, 4–20mA loop.
  • LED backlight circuit which can be powered from the loop (voltage drop 6.5V DC), it is separated from the input circuit.
  • Create a custom measuring unit with max. 8 characters.
  • Selectable engineering units for many different applications: L- NL- mL - M3- AM3- NM3 - mg - g - Kg - TON- OZ- GAL - USGAL - IGAL - lb - bbL- cf - CUFt - scf - p - rev - °C - °F - K - % - M - mm - CM - mtr - inch - Ft - SQFt – Yd - PSI - psig - mbar - MbARG - bar - barg – bara – PA - PAG - KPA – KPAG - MPA - INHG – mmHg - mmH2O - MH2O – INH2O- Ph – mV – mA - A - uS – PPM – RPM - custom unit or no unit.
  • Saves time and improves flexibility with the touch-through-glass keypad: no need to open the front cover
  • Familiar easy operation with the Fluidwell "Know one, know them all" configuration structure, saving time, cost and aggravation.
  • Easy installation in spacious chamber and plug & play connectors.
  • Durable high-grade stainless steel 316L Ex d enclosure withstanding extreme maritime conditions (optional).
  • Key information at a glance as the display shows the actual value, measuring unit and loop current and a 10 segments bargraph.

Hazardous area information

The E490 is ATEX and IECEx, certified with an ambient temperature range of -40°C to +70°C (-40°F to 158°F) for the aluminum enclosure. Ambient temperature stainless steel enclosure: -40°C to +67°C (-40°F to 153°F).

ATEX markings:
: II 2 G Ex db IIC T6 Gb.
Dust: II 2 D Ex tb IIIC T85°C Db.

IECEx markings:
: Ex db IIC T6 Gb.
Dust: Ex tb IIIC T85°C Db.

CSAc-us / FM: Pending

Display example


The E490 Explosion Proof - Multi-Purpose Indicator will be available from October 2nd.

Are you interested in learning more about the application possibilities of this robust Ex d Multi-Purpose Indicator?
Find out everything on the E490 product page: technical specifications, datasheet, certificates and other downloads.
Or feel free to contact a Fluidwell expert: Sales support

News overview