XNXXSH2SS Analytics Hydrogen Sulfide H2S Sensor
Brand: Honeywell | Model: XNXXSH2SS | Type: Electrochemical H₂S Sensor
This sensor delivers precise hydrogen sulfide detection for industrial safety and process control. It offers a selectable full scale from 50 to 500 ppm with a default 100 ppm range. The lower detectable limit is 1 ppm, and the default calibration point is set at 50 ppm. Response time T90 is under 30 seconds, and accuracy stays within ±5 ppm. Built for harsh environments, it operates from -40°C to 55°C. This sensor is a reliable choice for oil, gas, and chemical monitoring applications.
Technical Specifications
| Gas Type | H₂S (Hydrogen Sulphide) – high range |
| Selectable Full Scale | 50 to 500 ppm (steps of 10 ppm) |
| Default Range | 100 ppm |
| Lower Detectable Limit | 1 ppm |
| Calibration Gas Range | 30 to 70% of selected full scale |
| Default Cal Point | 50 ppm |
| Response Time (T50) | < 20 sec |
| Response Time (T90) | < 30 sec |
| Accuracy | < ±5 ppm |
| Operating Temperature | -40°C to 55°C (-40°F to 131°F) |
| Linearity & Sensitivity | Excellent linearity over full range, high sensitivity to H₂S |
| Environmental Tolerance | Resistant to humidity, vibration, and minor shocks |
| Interference Rejection | Minimal cross-sensitivity to CO, SO₂, and NO₂ |
Installation & Compatibility
- Mount in standard 4‑20 mA loop or voltage input systems.
- Compatible with most PLC and DCS platforms, including Modicon Quantum.
- Use shielded cable for signal integrity in electrically noisy areas.
- Sensor housing fits standard 22 mm threaded ports.
Calibration & Maintenance
- Simple zero and span calibration via push-button or remote command.
- Calibration gas: 30‑70% of selected range (recommended 50 ppm).
- No warm‑up time required – ready immediately after power‑on.
- Maintenance interval: 6‑12 months depending on exposure level.
Diagnostic Capability
- Continuous self‑check with fault output signal.
- End‑of‑life indication and out‑of‑range alert.
- Diagnostic data accessible via Modbus or analog output.
Typical Applications
- Oil & gas refineries – leak detection and area monitoring.
- Chemical plants – process safety and scrubber efficiency.
- Wastewater treatment – digester gas and sewer monitoring.
- Mining and pulp & paper – confined space entry.
Why Buy From Oiltech Controls?
- Over 15 years in industrial automation spare parts.
- Global shipping via FedEx, UPS, DHL – fast and tracked.
- Every unit undergoes technical verification before shipment.
- We stock tested industrial surplus and refurbished options.
- Support for obsolete control systems – we have hard‑to‑find parts.
- 12‑month warranty against manufacturing defects.
Package Contents & Certifications
- Sensor module XNXXSH2SS – 1 unit.
- Calibration cap and O‑ring kit.
- Quick start guide (digital download).
- CE marked, RoHS compliant, ATEX certified for hazardous areas.
Frequently Asked Questions (FAQ)
- Q: Can I change the range after installation?
A: Yes, selectable from 50 to 500 ppm via software. - Q: Does it work in low oxygen environments?
A: Yes, it operates reliably down to 5% O₂. - Q: How often should I recalibrate?
A: Every 3‑6 months for critical applications. - Q: Is the sensor plug‑and‑play?
A: Yes, with pre‑configured default settings.
Contact & Ordering
For inquiries: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923
Shipping: FedEx, UPS, DHL – worldwide delivery.
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