Timer or Clock, Ex nA, panel 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, magnetic pick-off, voltage pulse, or switch contact input.
  • Two separate displays
  • Optional:
        Internally powered display backlight
        Isolated dual Control Outputs
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This versatile Ex nA and Ex tc certified Timer or Clocks can perform a host of timing and control functions, such as sampling or dosing, within a Zone 2 or 22 hazardous area without the need for Zener barriers or galvanic isolators, thus significantly reducing cost. An easy to use state and event structure enables relatively complex timing functions to be easily configured. Timing operations may be started and stopped via the inputs, or from the front panel buttons. The instrument display shows progress of the operation and international certification permits worldwide installation.

An internally powered backlight is available as a factory fitted accessory.

The instrument can be supplied configured and fitted with a customer specified printed scale card showing the units of time for no additional charge. Specified tag or application information can also be printed onto the rear of the instrument.

Other timers or clocks in our range include:


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



BA377NE Timer or clock#
Mounting Rugged panel 105 x 60 mm
Case material 316 stainless steel
Protection Front IP66, rear IP20
Display 8 digits 9mm high
and 6 digits 6mm high
No. of inputs 1
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
-40°C ≤ Ta ≤ 60°C
Europe ATEX Ex nA ic IIC T5 Gc
Ex ic tc IIIC T80°C Dc IP66
-40°C ≤ Ta ≤ +60°C
Backlight Yes
Control 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
Declaration of Conformity PDF logodownload
CAD files ZIP logodownload

# Shown with optional separately powered backlight.

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