- Description
- Technical Data
- Approvals
- Resources
Description
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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 analog 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 isolator, 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.
Supported by a three year guarantee.



Technical Data
Legacy Status | Replaces BA374C | ||
Mounting & Enclosures | Field 141 x 212 mm | ||
Display | 5 digit 20 mm high + 31 segment bargraph | ||
Ingress Protection | IP66 | ||
Alarms / Control Outputs | Optional | ||
Backlight – loop powered | Optional | ||
External Keypad | Optional | ||
Factory Mutual | Specify |
Approvals



Europe ATEX Gas Certification | II 1G Ga Ex ia IIC T5 II (1) G, [Ex ia] IIC (associated apparatus) -40°C ≤ Ta ≤ +70°C (operating temperature -20°C) |
Europe ATEX Dust Certification | II 1D, Ex iaD 20 T80°C IP66, -20°C ≤ Ta ≤ +60°C II (1) D, [Ex ia D], -20°C ≤ Ta ≤ +60°C |
International IECEx Gas Certification | Ex ia IIC T5 Ga, -40°C ≤ Ta ≤ +70°C [Ex ia Ga] IIC, -40°C ≤ Ta ≤ +70°C (associated apparatus) (operating temperature -20°C) |
International IECEx Dust Certification | Ex ia IIIC T80°C Da IP66, -20°C ≤ Ta ≤ +60°C [Ex ia Da] IIIC, -20°C ≤ Ta ≤ +60°C |
USA FM Certification | Entity: IS / I, II, III / 1 / ABCDEFG / T4, Ta = +70°C – Entity; Type 4X, IP66 I / 0 / AEx ia / IIC / T4, Ta = +70°C – Entity; Type 4X, IP66 Nonincendive NI / I, II, III / 2 / ABCDEFG / T4, Ta = +60°C – NIFW; Type 4X, IP66 I / 2 / IIC / T4, Ta = +60°C – NIFW; Type 4X, IP66 AIS / I, II, III / ABCDEFG – Entity; Type 4X, IP66 [I / 0] / [AEx ia] IIC – Entity; Type 4, IP66 |
Canada cFM Certification | Entity: IS/I, II, III / 1 /ABCDEFG / T4, Ta = +70°C – Entity; Type 4X, IP66 I / 0 / Ex ia / IIC / T4, Ta = +70°C – Entity; Type 4X, IP66 Nonincendive IPA / I, II, III / 2 / ABCDEFG / T4, Ta = +60°C – NIFW; Type 4X, IP66 I / 2 / IIC / T4, Ta = +60°C – NIFW; Type 4X, IP66 AIS / I, II, III / ABCDEFG – Entity; Type 4X, IP66 [I / 0] / [Ex ia] IIC – Entity; Type 4, IP66 |