The Yokogawa IR400 EXA IR manual describes operation, specifications, installation, and maintenance of the five‑component non‑dispersive infrared gas analyzer.
The IR400 EXA IR is a five‑component non‑dispersive infrared gas analyzer designed for continuous measurement of NO, SO₂, CO₂, CO, CH₄ and O₂ in combustion exhaust and industrial furnace gases. It features a high‑sensitivity dual‑probe mass flowmeter, a large LCD display, and optional external O₂ zirconia sensor.
The manual provides detailed technical specifications, wiring diagrams, analog and relay output options, calibration procedures, communication interfaces (RS‑232/Modbus), installation guidelines, and a parts list for service and maintenance. This manual is written in Chinese.
| NO measurement range | 0 ppm – 5000 ppm |
|---|---|
| SO₂ measurement range | 0 ppm – 10 vol % |
| O₂ (internal sensor) range | 0 % – 25 % vol |
| Power supply | 85 V – 264 V AC, 50/60 Hz |
O₂ is measured either with an internal magnetic O₂ sensor or an external zirconia O₂ sensor.
The device supports RS‑232C (9‑pin) and Modbus™ protocol for reading and writing parameters.