Counter, Type nA, field mounting



  • To be discontinued, ATEX Ex nA certification will be de-harmonised in 2022, alternative is BA364G.
  • 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
IECEx logoEX logoETL logo

Product details
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.

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

Model BA364NG
BA364NG #
Mounting & Enclosure 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.
Ex nA ic IIC T5 Gc
Ex ic tc IIIC T80°C Dc
-40°C ≤ Ta ≤ +60°C
Group II Category 3GD
Ex nA ic IIC T5 Gc
Ex ic tc IIIC T80°C Dc
-40°C ≤ Ta ≤ +60°C
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
4/20mA output

Mounting &
No. of inputs
Downloads BA364NG
Datasheet PDFDownload
IECEx certificate PDFDownload
ATEX certificate PDFDownload
ETL & cETL certificate
Ingress certificate PDFDownload
Instruction manual PDFDownload
Abbreviated manual PDFDownload
Application guide PDFDownload
Declaration of Conformity (EU)
CAD files PDFDownload

# Shown with optional backlight, separately powered.