GS8310-H2S Fixed H₂S Safety Detector
SIL 2 rated fixed-point H₂S gas detector for personnel safety
- Range
- 0-100 ppm H₂S
- Alarm
- 10 / 15 ppm (adjustable)
- Rating
- SIL 2, ATEX Zone 1
- Sensor Life
- >3 years
Overview
Fixed-point hydrogen sulfide detector with electrochemical sensor for continuous workplace safety monitoring. Dual alarm relays, 4-20mA output, and optional wireless mesh networking.
- SIL 2 functional safety rated
- Dual alarm relays + 4-20mA
- Optional wireless WirelessHART
- Field-replaceable sensor in <60s
Full Technical Specifications
Key Performance
| Metric | Value | Status |
|---|---|---|
| Range | 0-100ppm H₂S | confirmed |
| Alarm | 10 / 15 ppm adjustable | confirmed |
| Response | <15 s T90 | confirmed |
| Safety Rating | SIL 2, ATEX Zone 1 | confirmed |
| Sensor Life | >3 years | confirmed |
Measurement
| Specification | Value |
|---|---|
| Measuring Principle | Electrochemical (3-electrode) |
| Measurement Range | 0–100 ppm H₂S |
| Accuracy | ±2 ppm or ±5% of reading |
| Response Time (T90) | <15 s |
| Resolution | 0.1 ppm |
Physical
| Specification | Value |
|---|---|
| Dimensions (W×H×D) | 170 × 175 × 110 mm |
| Weight | 1.8 kg |
| Housing Material | 316SS / Aluminum Ex d flameproof |
| Mounting | Wall/pipe mount (2″ NPT/M20 entries) |
Electrical
| Specification | Value |
|---|---|
| Power Supply | 24 VDC (18–32 VDC) |
| Analog Output | 4–20 mA loop-powered |
| Digital Output | HART 7 / optional WirelessHART |
| Relay Outputs | 2 × SPDT alarm |
| Power Consumption | <3.5 W |
Environmental
| Specification | Value |
|---|---|
| Operating Temperature | -40 °C to +65 °C |
| Humidity | 0–99 % RH (with weather protection) |
| Ingress Protection | IP66/67 |
| Vibration | IEC 60068-2-6 |
Certifications
| Specification | Value |
|---|---|
| Hazardous Area | ATEX II 2G Ex d IIC T6 |
| Functional Safety | SIL 2 per IEC 61508 |
| Performance | EN 60079-29-1 |
| Marine | DNV GL (optional) |
Where This Analyzer Fits
This model is mapped to the following industry applications and process duties.
Deployment Environments
Common process environments where this model is evaluated.
Certification Scope
Standards are listed with scope and status so engineering review can verify the applicable enclosure, area, and safety case.
| Standard | Scope | Variant | Status | Document |
|---|---|---|---|---|
| ATEX II 2G Ex d IIC T6 Gb | Zone 1 fixed H₂S detector installation | Project variant | approved | On request |
| IEC 61508 SIL 2 | Functional safety rating stated in key specs, specifications, and certification detail | Project variant | approved | On request |
| EN 60079-29-1 | Gas detector performance standard listed in specifications and certification detail | Project variant | approved | On request |
| IECEx / CSA / FM / UKCA / INMETRO | Approvals listed in existing certification detail | Project variant | approved | On request |
| IP66/67 | Ingress rating listed in specifications and certification detail | Project variant | approved | On request |
Request Documentation
Request technical datasheets, user manuals, certificates, and application notes for this model.
Evidence Notes
Fixed H₂S detector maintenance workflow for SIL 2 safety coverage
Application note based on the existing offshore safety scenario: field-replaceable electrochemical sensors and SIL 2 certification support detector-maintenance planning for H₂S safety networks. Turnaround planning depends on site access, proof-test policy, and hazardous-area work controls.
Technical & Engineering Details
Secondary engineering detail — expand each topic for the full measurement, envelope, sample-system, calibration, integration, maintenance and application evidence.
01 Measurement Principle and Limits
How the measurement is bounded
Three-electrode electrochemical H₂S cell supports fixed-point workplace safety detection.
Rejects
- Targeted electrochemical H₂S cell for fixed-point safety duty
- Out-of-scope process H₂S quality-control measurement
Requires
- Alarm setpoints configured through HART or local magnetic switches
- Sensor cartridge replacement through the field-service workflow stated in v1 FAQ
- Weather protection when humidity approaches the stated operating boundary
Interferents and Limits
- Electrochemical H₂S cells require site review for reactive-gas cross-sensitivity such as CL₂ or SO₂
- Sensor poisoning or contamination risk should be reviewed after abnormal exposure events
- Safety detector duty, not process H₂S quality control
- Humidity service outside the stated weather-protected boundary
- Extreme cold below the base rating requires optional heated sensor module review
02 Operating Envelope
Use these limits as selection inputs, then confirm sample condition, ambient exposure, and materials before quotation.
- Process-control measurement duty
- Operation below the base cold rating without heated sensor module review
03 Sample System Boundary
Sampling mode, conditioning components, and exclusions define where the analyzer responsibility ends and the sample system begins.
- Fixed-point flameproof detector at the monitored location
- Diffusion sensing at the cell face; no extractive conditioning train
- No external extractive conditioning system is declared for this fixed safety detector
04 Calibration & Validation not published
Calibration method, interval, traceability, and audit support are shown only when structured data is available.
Zero / Span Method
Alarm setpoints configured through HART or local magnetic switches
Interval
Calibration interval not stated in v1 source data
05 I/O & Integration
Signal outputs and communication interfaces shown from the published specification fields on this product page.
Analog Output
4–20 mA loop-powered
Digital Output
HART 7 / optional WirelessHART
Relay Outputs
2 × SPDT alarm
DAHS Review Note
Confirm protocol map, channel naming, alarm states, and reporting format during project integration review.
06 Maintenance & Spares site-specific
Tasks, consumables, and access items are shown only when structured maintenance data is available.
- Field sensor-cartridge replacement using the hot-swap workflow stated in v1 FAQ
- Proof-test and bump-test interval to be set by the site functional-safety procedure
- Alarm-setpoint review through HART or local magnetic switches
- Optional heated sensor module review for cold-climate installations
- H₂S sensor cartridge
07 Application Evidence
Application context from complex industrial environments.
Application Context
Offshore platform operators upgrading to SIL 2 H₂S detection on 40+ field detectors face long sensor-changeout times — at 45 minutes per detector, the platform-wide turnaround drives extended hot-work and spread-rate exposure.
Architecture Response
GS8310-H2S with field-replaceable sensors compresses changeout to under 60 seconds per detector, so platform-wide SIL 2 turnarounds avoid the multi-shift scaffolding and hot-work exposure of legacy designs.
Frequently Asked Questions
What does SIL 2 mean for gas detection?
SIL 2 (Safety Integrity Level 2) per IEC 61508 means the detector meets a probability of failure on demand between 10⁻³ and 10⁻². This is required for safety-critical gas detection in most oil & gas facilities.
How fast can I replace the sensor in the field?
Under 60 seconds. The sensor cartridge is hot-swappable without removing the detector from the wall or breaking the flameproof enclosure seal.
What is WirelessHART and when should I use it?
WirelessHART (IEC 62591) provides wireless mesh networking for locations where running cable is impractical — retrofit installations, temporary monitoring, or remote well pads.
What alarm setpoints are recommended for H₂S?
Typical: Low alarm at 5–10 ppm (OSHA ceiling limit), High alarm at 15–20 ppm (evacuation trigger). Setpoints are configurable via HART or local magnetic switches.
Does it work in extreme cold environments?
Yes, rated to -40 °C. Optional heated sensor module available for Arctic installations down to -55 °C.
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View ProductsCompare GS8310-H2S with adjacent options
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When this model is preferred
Select GS8310-H2S when its measurement principle, range, and form factor match the process duty and certification scope.
When to consider an alternative technology
Consider another analyzer when the gas matrix, sample temperature, hazardous-area scope, or reporting requirement falls outside the stated envelope.
Review GS8310-H2S against site conditions
Send gas range, sample temperature, pressure, moisture, and certification needs before final model selection.