Infrared gas detection for non-oxygen environments
Omniguard® model 3100 Infrared Gas Detector
The Omniguard model 3100 gas detector detects and measures gases in industrial applications such as refineries, drilling and production platforms, gas turbines, chemical plants, fuel loading facilities, compressor stations, wastewater treatment facilities, LNG/LPG processing and storage facilities, transportation facilities, and manufacturing processes.
- Infrared gas detection
- Operation in non-oxygen environments
- HART rev 7 communication
- Relay contacts for Alarm 1, Alarm 2, and Fault
- Long service life greater than 5 years
Specifications
Key gas detection and installation specifications for Model 3100
General specifications
| Measuring type | Diffusion. |
| Measuring method | Infrared. |
| Detectable gases | Hydrocarbon gases including LNG, LPG, methane, and butane, plus CO2, CO, and N2O. |
| Measuring range | Depending on gas. |
| Accuracy | +/-3% full range. |
Performance
| Response time | Typical 90% of range in less than 6 seconds; typical 50% of range in less than 3 seconds. |
| Zero drift | +/-2% full range. |
| Service life | Greater than 5 years. |
Electrical
| Input voltage | 18-31 VDC, nominal 24 VDC, ripple voltage less than 1 V. |
| Power consumption | Max. wattage 9.6 W at 24 VDC; max. current 400 mA at 24 VDC. |
| Interfaces | Analog 4-20 mA current interface, HART rev 7, relays, and RS485. |
Operating limits
| Operating temperature | Transmitter and sensor -40C to +80C. |
| Operating humidity | 5-99% RH non-condensing. |
| Pressure | 90-110 kPa. |
| Max air velocity | 6 m/s. |
Mechanical
| Dimensions (H x W x D) | 156 x 322 x 110 mm. |
| Weight | 3.2 kg aluminum; 4.8 kg stainless steel. |
| Conduit entry | 3/4-14 NPT or M20-1.5. |
| Housing materials | Aluminum or stainless steel. |
Configuration
| Model | 3100 |
| Product type | Infrared gas detector |
| Product type definition | Gas Detectors (gas) |
| Ordering format | [MODEL]-X X X X X X X |
| Housing material/conduit entry | 0 – Aluminium, 3/4-14 NPT (white); 1 – Stainless steel, 3/4-14 NPT; 2 – Aluminium, M20x1.5 (white); 3 – Stainless steel, M20x1.5 |
| Detectable gas | 0 – CH4 (Methane); 1 – C4H10 (Buthane); 2 – C3H8 (Propane); 3 – CO2 (Carbon dioxide); 4 – CO (Carbon monoxide); 5 – N2O (Nitrous oxide); 9 – Other, please specify |
| Measuring method | 0 – Infrared |
| Measuring range | 0 – 0-4000 ppm (N2O); 1 – 0-9999 ppm (CO2); 2 – 0-5000 ppm (CO2); 3 – 0-2% Vol (CO, CO2); 4 – 0-5% Vol (CO2); 5 – 0-20% Vol (CO2); 6 – 0-1% Vol (CO, CO2); 7 – 0-100% LEL (CH4, C4H10, C3H8); 9 – Other, please specify |
| Output signal | 0 – 4-20 mA, and HART rev 7, relays |
| Configuration | 0 – Standard; 1 – Remote option |
| Approvals | 0 – IECEx, ATEX, UL, SIL2, CE |
Why Model 3100
Model 3100 product highlights
Infrared sensing
Uses infrared detection for hydrocarbon gases plus CO2, CO, and N2O applications.
Non-oxygen environments
Suitable for gas detection where oxygen may not be present.
Fast response
Typical 90% response is less than 6 seconds, with typical 50% response less than 3 seconds.
HART communication
Standard HART rev 7 communication supports setup, integration, and diagnostics.
Advanced diagnostics
Self-test and diagnostic features support reliable field operation.
Relay outputs
Relay contacts support Alarm 1, Alarm 2, and Fault output configurations.
4-20 mA output
Standard analog output supports quick installation and operation.
Long service life
Infrared sensor design supports service life greater than five years.
Rugged enclosure
Weather- and flame-proof enclosure supports indoor and outdoor industrial environments.
Approvals
Approved for hazardous-area use, including IECEx, ATEX, UL, SIL2, and CE.
Accessories
Mounting, shields, and add-ons to fit your installation environment.
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Swivel mount for all Aluminum 660/760/860 Flame detectors
Material: Stainless Steel 304
Part number: 20856 -
Swivel mount for all Stainless Steel 660/760/860 Flame detectors
Material: Stainless Steel 316
Part number: 24784 -
Pole mount 2″ for Swivel mount 20856
Material: Stainless Steel 316L
Part number: 26803 -
Pole mount 2″ for Swivel mount 24784
Material: Stainless Steel 316
Part number: 26807 -
Weather shield for all 660/860 Flame detectors
Material: Stainless Steel 316L
Part number: 23546 -
Air shield for all 660/860 Flame detectors
Material: Delrin, Sintered Brass
Part number: 8001023 -
Air shield for all 660 High-temp Flame detectors
Material: Aluminum, Sintered Brass
Part number: 26489 -
Test Gun for all 660 Flame detectors
115VAC, USA, Canada
Part number: 43808-2 -
Test Gun for all 660 Flame detectors
100-240VAC
Part number: 43808-3 -
Test Gun for all 660/860 Flame Detectors
Part number: 540
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Test Gun for all 660/760/860 Flame Detectors
Part number: 545
Applications
Typical installation environments for Model 3100
Ready to configure Model 3100?
Use the configurator to choose the right version and options for your site, then request a quote.