Counter, Type nA, field mounting

Ex logo


  • ATEX, IECEx, ETL and cETL Ex nA & Ex tc certification allows installation in Zone 2 and 22 without Zener barriers or galvanic isolators.
  • Proximity detector, open collector, magnetic pick-off, voltage pulse, or switch contact input.
  • Separate total and rate displays
  • Can display the sum or differences of the two inputs and includes a quadrature decoder for position measurements.
  • Isolated synchronous pulse output
  • Optional:
        Internally powered display backlight
        Isolated Alarms
        Isolated 4/20mA output
        Stainless steel legend plate
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  PDF logoNEW application guide

This easy to use, Ex nA and Ex tc certified counter can process and simultaneously display the total number of pulses received and their rate in the same or different engineering units from a wide variety of sensors. Can be installed in Zone 2 or 22 without the need for Zener barriers or galvanic isolators thus significantly reducing cost. International certification allows use worldwide.

Accessories, include a display backlight, isolated dual alarms and an isolated 4/20mA output.

The instrument can be supplied configured and fitted with a customer specified printed scale card showing the units of measurement for no additional charge. An optional stainless steel legend plate is also available which can be supplied laser engraved with customer specified tag and application information.

Other counters in our range include:


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



BA364NG Counter#
Mounting Field 122 x 120mm
Protection IP66
Display Primary: 8 digits 18mm high
Secondary: 6 digits 12mm high
No. of inputs 2
Certification     Ex ic certification codes only refer to the instrument push button contacts which are nonincendive.
Europe ATEX Group II Category 3GD
Ex nA ic IIC T5 Gc
Ex ic tc IIIC T80°C Dc
-40°C ≤ Ta ≤ +60°C
USA ETL Class I Zone 2 AEx nA ic IIC T5 Gc
Zone 22 AEx ic tc IIIC T80°C Dc
-40°C ≤ Ta ≤ 60°C
Canada cETL Ex nA ic IIC T5 Gc
Ex n IIC T5 Gc
Ex ic tc IIIC T80°C Dc
Class III Div 2 Class II Div 2 Gp F, G
-40°C ≤ Ta ≤ 60°C
International IECEx Ex nA ic IIC T5 Gc
Ex ic tc IIIC T80°C Dc
-40°C ≤ Ta ≤ +60°C
Backlight Yes
Alarms Yes
4/20mA output Yes



Datasheet PDF logodownload
ATEX certificate PDF logodownload
ETL & cETL certificate PDF logodownload
IECEx certificate PDF logodownload
Ingress certificate PDF logodownload
Instruction manual PDF logodownload
Application guide PDF logodownload
Declaration of Conformity PDF logodownload
CAD files ZIP logodownload

# Shown with optional separately powered backlight.

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