The General Monitors S4000TH Intelligent Sensor instruction manual provides installation, operation, maintenance, troubleshooting, and Modbus interface…
This manual covers the complete setup and use of the S4000TH Intelligent Sensor, including safety warnings, mounting dimensions, wiring instructions, and terminal connections. It also explains the sensor's operating modes, calibration procedures, and HART/Modbus communication settings.
Key sections include a Quick Start Guide, detailed installation steps, user-selectable options, maintenance recommendations, fault code troubleshooting, and full technical specifications such as power requirements, relay ratings, and environmental limits.
| Sensor Type | Continuous diffusion, adsorption type metal oxide semiconductor (MOS) |
|---|---|
| Sensor Life | 3 to 5 years typical |
| Repeatability | +2 ppm or 10% of the applied gas, whichever is greater |
| Response Time (Typical) | T50 < 14 seconds (screen); T50 < 30 seconds (sintered) |
| Measuring Ranges | 0‑20 ppm, 0‑50 ppm, 0‑100 ppm |
| Input Power | 24 VDC nominal, 20‑36 VDC, 350 mA max |
| Relay Ratings | 8 A @ 250 VAC / 8 A @ 30 VDC resistive max |
| RS‑485 Output | Dual Redundant Modbus RTU, up to 128 units (247 with repeaters) |
| Baud Rate Options | 2400, 4800, 9600, 19200 bps |
| Physical Dimensions | Length 6.4 in, Height 3.4 in, Width 4.1 in, Weight 5.5 lb |
| Operating Temperature Range | -40 °C to +60 °C (FM) / -40 °C to +75 °C (CSA) |
| Warranty | Two years |
The maximum distance is 2,000 feet (610 meters), and each cable run should be as short as possible.
The relays are rated for 8 A at 250 VAC or 8 A at 30 VDC resistive maximum.
The sensor is covered by a two‑year warranty.
It operates from –40 °C to +60 °C under FM approval and –40 °C to +75 °C under CSA approval.