Laser Based Open Path Gas Detection for H2S or CO2 - GD1
The Simtronics GD1 sets a new standard for toxic gas detection. Using a tuneable laser diaode the GD1 delivers enchanced coverage and fail safe detection. The performance improvement marks a genuine step change for safely systems and life cylce cost savings
- Optical infrared toxic gas detection
- Tuneable laser diode / laser scanning
- No undisclosed source of failure
- Large area of coverage
- High sensitivity
- Fast acting
- Vibration and misalignment tolerant optics
- Heated optics, transmitter and receiver
- Optional Methane detection output
- HART®
- No sensor recalibration or replacement
- Superior detector stability and specific
- Suitable for use in SIL2 system
- Fewer devices cover the same risk
- Suitable for personnel safety purposes
- Fastest possible speed of response
- High performance in arduous conditions
- Reduced cabling and maintenance costs
- Non-proprietary user interface and improved preventive maintenance
The GD1 has been designed with features that provide an effective response to the detection of gas hazards in a wide range of industrial environments from offshore production facilities to wastewater treatment plants.
At the heart of the detector is a tuneable laser diode that eliminates environmental effects from sun, rain and fog. The laser scans single absorption lines where there is no interference from other gases.
The complete optomechanical design and construction is so stable that an ultra fast speed of response can be achieved whilst providing unparalleled service life and detector stability, thus saving on maintenance and service costs.
Supplied with worldwide hazardous area approvals. Suitable for use in systems with SIL 2 requirement.
| Technical Details | |
| General | |
| Detection Method | Near IR laser scanning |
| IR-Source | Tune-able laser diode / Laser Class 1, eye safe |
| Detector Variants | H2S; CO2; h2S and CH4 (Dual Output) others available on request |
| Range | |
| H2S | 0 – 200 ppm.m (Option 0 – 1,000 ppm.m) |
| CH4 Methane | 5 LEL.m (Option 1 LEL.m) |
| Path Lengths | 5 – 50 m / 5 – 100 m |
| Self Test | Continuous |
| Calibration |
Factory set, no field recalibration |
| Performance | |
| Lifetime Stability | Zero: ±2% of Full scale deflection / Span: ±3% of Full scale deflection |
| Response Time | T90 < 5 sec. |
| Optics | |
| Alignment | ±0.5° (5 – 50m) |
| Optics | Heated (Transmitter and Receiver) |
| Obscuration | >90% |
| Output Signal | |
| Standard | 4-20mA sink or source, max. load impedance 500Ω HART® |
| Option | RS485 / Modbus protocol |
| Fault Signal | Beam block / fault: 1mA Low signal: 2mA Warning: 3mA |
| Electrical | |
| Power Supply | 24 VDC, range 18-32 VDC |
| Power Consumption | <10W |
| Cable Entry | 3 x M20 per junction box |
| Temperature Range | |
| Storage | -40°C to +70°C (-40°F to +158°F) |
| Operating | -40°C to 65°C (-40°F to +158°F) |
| ATEX Flameproof | -55°C to 75°C (-67°F to +167°F) |
| Humidity (Operation) | 100% RH |
| Material | |
| Tx and Rx Housing | Stainless steel SIS2343 (ASTM 316) |
| Junction Box | GRP |
| Weight | Approx. 5.5 kg (12 lbs) per Tx or Rx / Approx. 2.0 kg (4.4 lbs) per Tx or Rx Junction Box |
| Dimension | 205L x 115W x 248H (mm) / 8.1 x 4.3 x 9.8 (inches) |
| Warranty | 5 Years full warranty on detector system |
| Approvals | |
| ATEX | ATEX II 2 G EExd IIC T5 (DNV-2008-OSL-ATEX-18877X) ATEX II 2 G EEx ia m e T6 |
| CSA | Class 1, Div, Groups B, C & D (Pending) |
| Ingress | IP66 / IP67 DIN 40050 |
| SIL | Suitable for use in SIL2 systems |
| Note: Specification are subject to change without notice. | |
| Download Catalog | |
| GD1 - H2S |  |
| GD1 - CO2 |
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For all inquiries, you may contact us through Telephone, Email or Live Chat Support.
Operating Hours
Monday to Friday: 8.00am to 5.30pm
Technical Support (After Office Hour)
Tel: (65) 9876 6258
Contact Informations
| By Phone / Fax | By Email | By Live Chat | |
| Tel: (65) 6553 0366 Fax: (65) 6553 0828 |
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