Product Overview
The Teledyne Oldham Simtronics GD10P is a fixed infrared point gas detector designed for continuous monitoring of combustible hydrocarbon gases.
It uses a patented solid-state infrared source instead of a conventional filament lamp, providing excellent stability, fast response and exceptionally low maintenance. Its stainless-steel construction, heated optics and hazardous-area certifications make it especially suitable for ships, FPSOs, offshore platforms and petrochemical installations.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Teledyne Oldham Simtronics |
| Exact model | GD10P |
| Available model references | GD10-P00 and GD10-PE0 |
| Detector type | Fixed infrared point gas detector |
| Detection technology | Dual-wavelength, dual-path infrared absorption |
| Detected gases | Hydrocarbon gases |
| Standard gas ranges | Methane or propane: 0–100% LEL or 0–100% volume |
| Other flammable gases | 0–100% LEL |
| Accuracy from 0–50% | ±3% of full scale |
| Accuracy from 50–100% | ±5% of full scale |
| T20 response | Approximately 0.7 seconds |
| T50 response | Approximately 1.7 seconds |
| T90 response | Approximately 4 seconds |
| Standard output | 4–20 mA current source |
| Optional output | 4–20 mA current sink |
| Communication | HART 7 |
| Maximum load impedance | 500 ohms |
| Power supply | 18–32 VDC, nominally 24 VDC |
| Power consumption | Approximately 3.5 W |
| Electrical connection | Three-wire shielded cable |
| Cable entry | M20 Ex e cable gland |
| Operating temperature | −40°C to +60°C |
| Storage temperature | −40°C to +70°C |
| Operating humidity | 0–100% RH |
| Ingress protection | IP66/IP67 |
| Housing material | ASTM 316 stainless steel |
| Dimensions | 264 × 104 × 106 mm |
| Weight | Approximately 2.9 kg |
| Calibration | Factory calibrated; no routine field recalibration |
| Self-testing | Continuous optical and electronic self-test |
Key Features
- Patented solid-state SimSource infrared technology
- No oxygen required for correct gas measurement
- Immune to catalytic-sensor poisoning from silicone vapours and H₂S
- Continuous internal self-diagnostics
- Early dirty-optics warning
- Heated optics help prevent condensation
- No saturation-related false readings
- Gas velocity does not affect measurement accuracy
- Factory calibrated with no routine field recalibration
- Fail-safe output and configurable fault levels
- Suitable for high-demand SIL 2 safety applications
- Rugged stainless-steel explosion-protected housing
Fault Output Levels
| Condition | Output |
|---|---|
| Normal gas measurement | 4–20 mA |
| Preventive optics warning | 2 mA |
| Dirty optics | 1 mA |
| Internal detector fault | 0 mA |
Certifications and Approvals
- ATEX
- IECEx
- INMETRO
- CNEX
- PESO
- Ex db eb IIC T6 Gb
- CSA and applicable North American approvals
- SIL 2 SC3 High Demand
- Marine Equipment Directive
- ABS marine approval
Typical Applications
- LNG and LPG carriers
- Oil and chemical tankers
- FPSOs and offshore platforms
- Gas compressor rooms
- Boiler and machinery spaces
- Fuel-gas supply systems
- Drilling rigs and MODUs
- Refineries and petrochemical plants
- Hazardous machinery compartments
- Gas turbine enclosures
