Toxic Gas Detector Spectrex Quasar 950
The Spectrex Quasar 950 Open Path is an advanced industrial solution for continuous detection of toxic gases over long distances, using infrared (IR) open path technology.
The system consists of a transmitter and a receiver that create an IR beam between the two units. The equipment measures the absorption of infrared radiation caused by toxic gases along the entire optical path, providing volumetric detection that is significantly more effective than point detection systems.
Developed by Spectrex Inc. (part of Emerson Electric), this gas detector is designed for critical applications where process safety is essential.
Quasar 950 is suitable for:
- refineries and petrochemical plants
- chemical industry
- process and storage facilities
- energy and utility infrastructure
Reliable operation is ensured even in harsh environmental conditions such as dust, fog, rain, or temperature fluctuations.
Benefits
- Long-range monitoring
Enables coverage of large areas with fewer devices. - True volumetric detection
Measures gas concentration along the entire beam path (ppm·m), providing an accurate representation of risk. - Stable and selective IR technology
This open path gas detector ensures high accuracy and strong immunity to interference. - Reliable in harsh industrial environments
Robust construction for operation in demanding conditions. - Reduced false alarms
Advanced algorithms distinguish real gas presence from environmental disturbances. - Full industrial integration
Compatible with PLC, SCADA, and safety systems.
Technical Specifications:
| Feature | Value |
| Product type | Open path gas detector for toxic gases |
| Series | Quasar 950 |
| Technology | Infrared (IR) open path |
| Configuration | Transmitter + receiver |
| Measurement principle | IR absorption along optical path |
| Measurement type | Integrated concentration (ppm·m) |
| Detectable gases | Specific toxic gases (depending on configuration) |
| Detection range | Up to hundreds of meters |
| Response time | Fast |
| Outputs | Analog (e.g. 4–20 mA) and digital |
| Power supply | 24 VDC |
| Protection rating | Industrial grade, suitable for harsh environments |
| Operating conditions | Resistant to dust, fog, rain |
| Mounting | Optical alignment transmitter–receiver |
| Maintenance | Low |
Consulting & Quotation
Looking for a gas detector configured for your specific application?
The instrumentatie.ro team can support you with:
- proper solution selection
- detection range sizing
- integration into existing systems





