My Cart
0 items
Genuine Automation Parts | Worldwide Express Delivery | 12-Month Warranty — [GET A QUOTE]
The SPASI23 is a 16-channel analog input (AI) module designed for ABB Symphony Plus and Harmony Rack (INFI 90) distributed control systems. It serves as the primary interface for process variable acquisition, converting continuous...
Availability: Low stock: 10 left
Reliable Worldwide Delivery
30-Day Money-Back Guarantee
Need more details? Read our fullShipping PolicyandRefund Policy.
The SPASI23 is a 16-channel analog input (AI) module designed for ABB Symphony Plus and Harmony Rack (INFI 90) distributed control systems. It serves as the primary interface for process variable acquisition, converting continuous electrical signals from field transmitters—such as pressure, temperature, flow, and level sensors—into precise digital data for the system controller.
Engineered for mission-critical industrial environments, the SPASI23 delivers high-resolution, noise-immune signal processing. Each channel incorporates dedicated signal conditioning circuitry to ensure accurate, stable measurements, enabling reliable monitoring of complex process loops in power generation, chemical, and large-scale industrial plants.
| Parameter | Specification |
|---|---|
| Model Number | SPASI23 |
| Module Type | Analog Input (AI) |
| System Family | Symphony Plus / Harmony Rack / INFI 90 |
| Input Channels | 16 independent channels |
| A/D Resolution | 12-bit to 16-bit (depending on system configuration) |
| Accuracy | ±0.1% of full scale |
| Input Impedance | 250 Ω (current mode) / >1 MΩ (voltage mode) |
| Dimensions (D × W × H) | 7.37 × 27.18 × 35.81 cm |
| Net Weight | 0.77 kg |
The SPASI23 is optimized for high-density analog data collection and is deployed in applications where signal fidelity and reliability are critical:
Process Variable Monitoring: Steam pressure, turbine temperatures, chemical tank levels
Control Loop Feedback: Provides PID loop input for BRC or SPBRC controllers
Safety Systems: Interfaces with critical transmitters for over-pressure or high-temperature trip logic
Its advanced isolation and signal conditioning make it suitable for electrically noisy industrial environments, ensuring uninterrupted operation and accurate process data.
How does the SPASI23 differ from the SPASI13?
The SPASI23 features modernized internal circuitry, improved thermal performance, and faster processing speeds, providing enhanced long-term stability over the legacy SPASI13.
Is factory calibration required?
The module is factory-calibrated. Routine plant maintenance typically involves annual loop checks to verify end-to-end accuracy of transmitters and input channels.
Can the SPASI23 power a 2-wire transmitter?
The module itself processes the signal, but 2-wire transmitter power is generally supplied by the termination unit (TU) or an external power source via the Harmony Rack backplane.
