The SPA is a field-programmable loop monitor that can be used to monitor process status and instrument status. It can read digital signals hidden in the signal, providing process options and fault diagnosis alarms. It also provides multiple alarm channels and analog output functions, which can be used to track the valve position of smart valves and other variables.
The SPA HART is a HART‑enabled circuit monitor and alarm unit designed for continuous monitoring of smart transmitters, valves and positioners. It can be installed in parallel with a 4‑20 mA loop and provides up to four alarm channels, relay outputs and an optional isolated analog output.
The manual covers device features, wiring diagrams, panel configuration, safety password protection, performance specifications and troubleshooting. It also explains how to set alarm limits, select process variables, and use the built‑in display for real‑time data. This manual is written in Chinese.
| Power supply range | 22‑300 VDC or 90‑260 VAC |
|---|---|
| Power consumption | < 6 W |
| Isolation capability | 1000 V rms |
| Operating temperature range | -25 °C to +65 °C |
| Digital response time (normal mode) | ≤ 300 ms |
| Alarm response time | Digital response time + 150 ms |
| Output accuracy | ±0.003 % of full scale |
| Display type | 2 × 4 LED display |
It reads the diagnostic information from the HART signal and triggers an alarm when the instrument reports a fault.
The device accepts a DC supply of 22‑300 V or an AC supply of 90‑260 V.
Yes, the optional isolated analog output can be set to transmit any selected process variable as a 4‑20 mA signal.
Only one SPA HART may be installed in a HART loop.