Product details
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PRODUCT SIGNAL PROFILE

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YOKOGAWA

CENTUM · SIGNAL I/O

CONDITIONING CARD

ARTICLE NUMBER

EA1*A

FUNCTION 2-Wire Transmitter Input

OFFICIAL PRODUCT NAME

Signal Conditioner Card

2-WIRE TRANSMITTER INPUT

CONDITIONNew Original

WARRANTYOne year

AVAILABILITYIn stock

YOKOGAWA EA1*A|Signal conditioning for legacy process-control I/O

DIAGNOSTIC & CONTROL MATRIX

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Yokogawa EA1*A is a signal conditioner card for two-wire transmitter inputs, supporting 4–20 mA process signals in legacy Yokogawa control installations.

TECHNICAL SPECIFICATIONS

Manufacturer	Yokogawa	Part number	EA1*A
Card type	Signal conditioner	Input function	2-wire transmitter
Input signal	4–20 mA DC	Control family	Legacy Yokogawa DCS
Mounting	Plug-in card	Country of origin	Japan

DIAGNOSTICS & PROTECTION

Check transmitter loop power, card seating, input polarity and the measured 4–20 mA signal before replacement. Use cabinet isolation and electrostatic precautions during service.

LOOP POWER

POLARITY

CARD SEATING

MONITORING & CONTROL

Monitor the transmitter current, conditioned channel value and controller indication together. Compare the field signal with the configured range and alarm limits during commissioning.

4-20 mA

CHANNEL VALUE

ALARM LIMIT

BRAND & APPLICATION COMPASS

BRAND CHARACTERISTICS

Yokogawa process-control modules emphasize stable signal conditioning, documented station integration and maintainable card-level replacement for long-life DCS installations.

SIGNAL STABLE

DCS READY

TRACEABLE

APPLICATION FIELDS

Applied to transmitter loops, process measurements and conditioned analog inputs in chemical, energy, utility and continuous-production control systems.

TRANSMITTERS

PROCESS DATA

PLANT I/O

MODEL REFERENCES

Yokogawa

AAI141-S00	AAI143-S00	AAI543-S00	AAI835-S00	ADV151-P00
ADV159-P00	ADV551-P00	ADV561-P00	ALR121-S00	ALP111-S00
ANB10D-420	ANB11D-420	CP451-10	CP461-50	EC401-10
EB501-10	VI451-10	ATSS3D-0	EA1*A	ECO*A

Koyo Electronics

D2-230	D2-240	D2-250-1	D2-260	D2-430
D2-440	D2-450	D2-16ND3-2	D2-16NA	D2-16TD1-2
D2-08NA-1	D2-04AD	D2-08AD-1	D2-02DA	D2-08TR
D4-450	D4-16ND2	D4-16TD2	F2-04AD-1	F2-08DA-1

ORDER & SERVICE FLOW

01 · IDENTIFY

Provide the complete EA1*A marking, installed system, machine function and required quantity.

02 · VERIFY

Confirm the full code, hardware revision, companion equipment, field wiring and compatibility with the installed architecture.

03 · QUOTE

Review current condition, availability, warranty, lead time, protective packing and destination-based delivery terms.

04 · DISPATCH

Complete final identity checks, ESD-safe packing, shipment documentation and destination routing before release.

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The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.

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Yokogawa EA1*A 2-Wire Transmitter Input Signal Conditioner Card

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