SAI143-H53A4D00 Safety Analog Input Module

Parameter Name	Parameter Value
Product Model	YOKOGAWA SAI143-H53A4D00
Manufacturer	Yokogawa Electric Corporation
Product Type	Safety Analog Input Module
Channels	4 (isolated, HART-enabled)
Input Signal	4–20mA + HART protocol
Accuracy	±0.05% of span
Update Rate	100 ms/channel (all channels)
Isolation	1500V AC channel-to-channel
HART Support	Full HART 7 tunneling (PV/SV/TV/QV)
Diagnostics	Open wire, short circuit, out-of-range
Safety Rating	SIL 3 (IEC 61508/61511)
Response Time	≤50 ms (sensor-to-logic solver)
Operating Temp	-40°C to +70°C
Power Consumption	1.8W @ 24V DC
Connection	Removable terminal block
Certifications	TÜV Rheinland, Ex ia IIC T6
Dimensions	130 x 40 x 120 mm

Add to quote

Description

Product Overview

The YOKOGAWA SAI143-H53A4D00 is a high-integrity safety analog input module engineered for critical safety instrumented systems (SIS) within Yokogawa’s ProSafe-RS platform. Designed for SIL 3 applications per IEC 61511, this module provides 4-channel isolated analog input processing for 4–20mA/HART signals from field sensors (e.g., pressure transmitters, temperature transmitters) with ±0.05% accuracy. The SAI143-H53A4D00 features hardware-based diagnostics, redundant signal processing paths, and automatic HART data tunneling to enable predictive maintenance while ensuring failsafe shutdown response times ≤50 ms. Its ruggedized design withstands harsh industrial environments (-40°C to +70°C) with galvanic isolation and conformal-coated PCBs, making it essential for oil & gas, chemical, and power generation safety loops.

Technical Specifications

Parameter Name	Parameter Value
Product Model	YOKOGAWA SAI143-H53A4D00
Manufacturer	Yokogawa Electric Corporation
Product Type	Safety Analog Input Module
Channels	4 (isolated, HART-enabled)
Input Signal	4–20mA + HART protocol
Accuracy	±0.05% of span
Update Rate	100 ms/channel (all channels)
Isolation	1500V AC channel-to-channel
HART Support	Full HART 7 tunneling (PV/SV/TV/QV)
Diagnostics	Open wire, short circuit, out-of-range
Safety Rating	SIL 3 (IEC 61508/61511)
Response Time	≤50 ms (sensor-to-logic solver)
Operating Temp	-40°C to +70°C
Power Consumption	1.8W @ 24V DC
Connection	Removable terminal block
Certifications	TÜV Rheinland, Ex ia IIC T6
Dimensions	130 x 40 x 120 mm

Key Features & Advantages

Triple Modular Redundancy (TMR):

Three independent signal paths with 2oo3 voting detect sensor/transmitter failures within 10 ms, preventing nuisance trips while maintaining SIL 3 integrity.

HART-over-Safety:

Embedded HART multiplexer extracts device diagnostics (e.g., sensor drift, plugging alarms) without compromising safety loop response time.

SAI143-H53A4D00

Cybersecurity Hardening:

Hardware-enforced write protection and encrypted firmware updates meet IEC 62443 SL2 requirements for critical infrastructure.

Lifecycle Management:

Stores calibration records and device health indices in non-volatile memory for 15+ years, simplifying compliance audits.

Seamless Integration:

Auto-recognized by ProSafe-RS Engineering Suite for automatic tag generation and SIL verification reports.

Application Areas

Oil & Gas: Safety-critical pressure/temperature monitoring in offshore platforms
Chemical Plants: Reactor high-pressure shutdown systems
Power Generation: Boiler drum level safety interlocks
Pharmaceutical: Sterilizer over-temperature protection
LNG Terminals: Cryogenic storage tank overfill prevention
Refineries: Furnace flame failure detection