Indicating temperature transmitter, Intrinsically safe, field mounting

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  • ATEX & IECEx intrinsic safety certification, optional FM & cFM.
  • Large 5 digit display + 31 segment bargraph
  • HART® communication
  • Transmitter and sensor diagnostics
  • Loop powered
  • IP66 enclosure with separate terminal compartment
  • Optional:
        Loop powered backlight
        External push buttons
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This second generation BA474D 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 internal push buttons or via HART® digital communication.

The BA474D is intrinsically safe, when protected via a Zener barrier or galvanic isolator it may be installed in any gas or dust hazardous area.

The BA474D transmitter is also certified as associated apparatus, when the transmitter is installed in a safe area the input may be directly connected to an RTD, THC, resistance or voltage source located in any gas or dust hazardous area without the need for a certified Zener barrier or galvanic isolater, thus significantly reducing the loop cost.

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

Other indicating temperature transmitters in our range include:


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



BA474D Indicating temperature transmitter#
Mounting Field
Protection IP66
Display 5 digit 20mm high + 31 segment bargraph
Europe ATEX II 1G Ga Ex ia IIC T5
II (1) G, [Ex ia] IIC (associated apparatus)
-40°C ≤ Ta ≤ +70°C
International IECEx Ga Ex ia IIC T5
[Ex iaGa] IIC (associated apparatus)
-40°C ≤ Ta ≤ +70°C
Alarms Yes
Backlight - loop powered Yes
External push buttons Yes
USA FM certification Entity CL I, II, III Div. 1
Gp A, B, C, D, E, F & G
T4 Ta = 70°C
Nonincendive CL I, II, III Div. 2
Gp A, B, C, D, E, F & G
T4 Ta = 70°C
Canada cFM certification Entity CL I, II, III Div. 1
Gp A, B, C, D, E, F & G
T4 Ta = 70°C
IPA CL I, II, III Div. 2
Gp A, B, C, D, E, F & G
T4 Ta = 70°C
Europe ATEX Dust certification II 1D Ex iaD 20 T80°C IP66
II (1) D (Ex ia D) -20°C ≤ Ta ≤ +60°C
International IECEx Dust certification Ex ia IIIC T80°C IP66 Da
(Ex ia Da) IIIC -20°C ≤ Ta ≤ +60°C



Datasheet PDF logodownload
ATEX certificate PDF logodownload
FM certificate PDF logodownload
cFM certificate PDF logodownload
IECEx certificate PDF logodownload
HART® certificate PDF logodownload
Ingress certificate PDF logodownload
Instruction manual PDF logodownload
BA47X/67X Indicating Temperature
Transmitter HART® Interface Guide
PDF logodownload
Declaration of Conformity PDF logodownload
HART® device files ZIP logodownload
CAD files ZIP logodownload

# Shown with optional loop powered backlight.

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