Indicating temperature transmitter, Intrinsically safe, panel mounting

Loop powered indicating temperature transmitter


  • Intrinsic safety certification
  • Large 5 digit display + 31 segment bargraph
  • HART® communication
  • Transmitter and sensor diagnostics
  • Loop powered
  • IP66 front panel
  • Optional:
  • Alarms
    Loop powered backlight
IECEx logoEX logoFM logo

Product details
This second generation BA478C loop powered indicating temperature transmitter provides a large, easy to read digital temperature display plus accurate 4/20mA analogue and HART® digital outputs. Optional alarm outputs enable under and over temperature warnings to be generated and an optional display backlight enhances display visibility in poor lighting conditions.

The transmitter has a resistance thermometer, thermocouple, resistance or voltage input and may be configured using the front panel push buttons or via HART® digital communication.

The BA478C is intrinsically safe, when protected via a Zener barrier or galvanic isolator the transmitter may be installed in any gas hazardous area.

The instrument can be supplied calibrated to customer's requirements free of charge and can be labelled to show units of measurement, tag number and application.

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

Model BA478C
BA478C #
Mounting Panel 144 x 72mm
Protection Front IP66, rear IP20
Display 5 digit 20mm high + 31 segment bargraph
International IECEx
Ga Ex ia IIC T5
-40°C ≤ Ta ≤ +70°C
(operating temperature -20°C)
Europe ATEX II 1G Ga Ex ia IIC T5
-40°C ≤ Ta ≤ +70°C
(operating temperature -20°C)
Entity CL I Div. 1
Gp A, B, C & D
T4 Ta = 70°C
Nonincendive CL I Div. 2
Gp A, B, C & D
T4 Ta = 70°C
Canada cFM
Entity CL I Div. 1
Gp A, B, C & D
T4 Ta = 70°C
Nonincendive CL I Div. 2
Gp A, B, C & D
T4 Ta = 70°C
Alarms Yes
Backlight - loop powered

Mounting &
Downloads BA478C
Datasheet PDFDownload
IECEx certificate PDFDownload
ATEX certificate PDFDownload
FM certificate
cFM certificate
HART® certificate
Ingress certificate
Instruction manual PDFDownload
BA47X/67X Indicating Temperature
Transmitter HART® Interface Guide
Declarations of Conformity PDFDownload
HART® device files
CAD files PDFDownload