4/20mA Loop powered rate totaliser, Type nA, field mounting

Ex logo


  • ATEX & IECEx Ex nA and Ex tc certification
    Installation in Zone 2 or 22 without barriers or isolators.
  • Large easy to read displays:
        5 digit 12mm high
        8 digit 18mm high
  • IP66 GRP enclosure with separate terminal compartment.
  • Operating temperature -40°C to +70°C
        Display functions -20°C to +70°C
  • Internal calibrator
  • Root extractor and lineariser
  • Optional:
        External keypad
        Backlight - may be loop or separately powered
        Escutcheon scale and tag labelling
        Etched stainless steel legend plate
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  PDF logoNEW application guide

This third generation, Type nA certified BA354NE 4/20mA loop powered Rate Totaliser has large high contrast rate and total displays with an extended operating temperature range. It can display flow rate per second, minute or hour and total flow in the same or different units. Adjustable linearisation or square root extraction are selectable and the instrument can display and totalise bi-directional flows.

No additional charge is made for factory calibration or for escutcheon scale and tag marking, however the Rate Totaliser can easily be recalibrated on-site.

Coated printed circuit boards plus extensive thermal and vibration testing provides maximum reliability supported by a three year guarantee.

Other loop powered rate totalisers in our range include:


To select options for your application please refer to the following table.



BA354NE 4/20mA Loop powered rate totaliser#
Mounting Field
Protection IP66
Display 5 digit 12mm high
8 digit 18mm high
Europe ATEX Gas - Group II, Category 3G,
Ex nA ic IIC T5 Gc -40°C ≤ Ta ≤ +70°C
Dust - Group II, Category 3D,
Ex tc IIIC T80°C Dc IP66 -40°C ≤ Ta ≤ +70°C
International IECEx Gas - Ex nA ic IIC T5 Gc
-40°C ≤ Ta ≤ +70°C
Dust - Ex tc IIIC T80°C Dc IP66
-40°C ≤ Ta ≤ +70°C
Alarms Yes
Backlight, which may be loop or separately powered Yes
External push buttons Yes
Escutcheon scale and tag labelling (no charge) Yes
Etched stainless steel legend plate Yes



Datasheet PDF logodownload
ATEX certificate PDF logodownload
IECEx certificate PDF logodownload
Ingress certificate PDF logodownload
Instruction manual PDF logodownload
Application guide AG354 PDF logodownload
Application guide AG310 PDF logodownload
Declaration of Conformity PDF logodownload
CAD files ZIP logodownload

# Shown with optional external push buttons and backlight, separately powered.

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