The Yokogawa SAI143-S03 is a high-performance analog input module designed for use in safety instrumented systems (SIS) such as the ProSafe-RS platform. Specifically tailored to handle 4 to 20 mA current inputs from field instruments, the SAI143-S03 provides 16 isolated input channels with robust safety and signal integrity features. This model emphasizes operational reliability and flexibility, suitable for mission-critical industrial automation and process safety applications.

Technical Specifications

Applications

• Safety Instrumented Systems (SIS) in process automation

• Oil & gas plants for critical sensor signal acquisition

• Chemical and petrochemical facilities requiring intrinsic safety

• Power generation facilities for monitoring process instrumentation

• Pharmaceutical manufacturing environments with high safety demands

• Industrial automation in hazardous locations

Advantages

• High Accuracy: Ensures precise analog current measurement with minimal drift

• Signal Isolation: Each channel is electrically isolated, enhancing safety and reducing interference

• Dual Redundancy Support: Improves system reliability and fault tolerance

• Transmitter Power Supply: Capable of powering 2-wire transmitters directly from the module

• Compact Design: Space-saving installation with DIN-rail mounting capability

• Robust Build: Designed for high-temperature industrial environments up to 70°C

• PRM Support (H version): Enables integration with Yokogawa’s Plant Resource Manager for diagnostic and configuration management

• Fast Update Rate: 40 ms per channel ensures timely data for control and safety logic

FAQ

Q1: What input signals does the SAI143-S03 support?

A1: The module supports 4 to 20 mA current signals, with a permissible input range of 0 to 25 mA.

Q2: Can this module power 2-wire transmitters directly?

A2: Yes, it provides transmitter power supply with a minimum of 16.15 V at 20 mA.

Q3: Is the SAI143-S03 suitable for high-temperature environments?

A3: Yes, with appropriate suffix codes (e.g., “3” or “C”), it supports ambient temperatures from -20°C to +70°C.

Q4: Is the module safe for use in explosion-hazard areas?

A4: Explosion-proof variants are available using specific suffix codes (e.g., “E” or “F”).

Q5: What kind of wiring connection is available?

A5: It supports pressure clamp terminals, MIL cables, and dedicated signal cable interfaces.

Q6: Can the SAI143-S03 be used in redundant configurations?

A6: Yes, the module supports dual-redundant configurations for enhanced system reliability.

Q7: What is the data update frequency of this module?

A7: The module updates input data every 40 milliseconds.

Q8: Does the SAI143-S03 include HART communication?

A8: Only the SAI143-H variant includes HART communication; the S03 standard variant does not.

Q9: How is input signal isolation achieved?

A9: Each of the 16 channels is electrically isolated from the system, ensuring safe and interference-free operation.

Q10: What is the weight and size of the SAI143-S03?

A10: The module measures 130 x 107.5 x 32.8 mm and weighs approximately 0.34 kg.