| Item | Value |
|---|---|
| Measured gases | |
| Measuring range | |
| Detection principle | catalytic combustion |
| Accuracy | |
| Resolution | |
| Response time | |
| Ingress protection | |
| Explosion protection | |
| Operating temperature | |
| Power supply | |
| Output signal |
The Dräger Polytron Pulsar 2, the most advanced technology in the field of Open-Path gas detection, is dedicated to the detection of a wide range of gaseous hydrocarbons. This includes chain hydrocarbon families, from methane to hexane, propylene, ethylene, methanol and ethanol. The detector is equipped with a junction box or certified cable access for easy installation.
Easy to adjust and configure
The Pulsar is designed for one-person installation and operation without special training. By using a handheld terminal, the Pulsar transmitter and receiver can be accurately tuned, zeroed and operated for maximum efficiency. Polytron Pulsar is factory calibrated, eliminating the need for manual setup and testing of gases.
High performance
The Pulsar receiver communicates with the transmitter over a digital link that acknowledges and adapts to harsh environmental conditions. The microprocessor inside the receiver instructs the transmitter to increase the flash frequency for higher performance and accuracy. Due to vibrations in the rotating parts, Polytron Pulsar is not affected by sunlight, gas flame sparkles, arc welding or resonance, or environmental factors such as mist, light rain or snow. The flicker rate is also increased when detecting gases to ensure accuracy and quick response.
System stability
The detector is designed to ensure that all faults are detected. In normal mode, the output signal is from 4 to 20 mA, depending on the measured gas concentration. A signal of less than 1 mA represents a fault that should be immediately noticed (due to persistent beam shielding or hardware failure). While a 2 mA signal indicates beam shielding, which can fail if it exceeds 60 seconds. The Pulsar can also output a 3.5 mA signal for early warning – when the optics may be contaminated or mistuned. Gas detection continues during the time Pulsar displays an "early warning", allowing customers to schedule maintenance of the detector and reduce downtime. Polytron Pulsar is suitable for SIL Level 2 systems.
Heated optics
Adjusted internal lens heater prevents ice and snow cover in harsh climates. They also prevent condensation on the lens.
Built-in database
The receiver log details the report for the last 7 days and a summary for the last 32 weeks. These reports contain important information (e.g., measured values), events (e.g., "beam shielding" and gas alarms), warning signals, signal strength, regulation, supply voltage, and operating temperature.
HART - Communication
Polytron Pulsar's HART-Communication is responsible for digital communication between explosion-proof areas and safety areas. Without the need for additional cables, you can get real-time individual detector status and configuration and historical data for each device.
Extended pathways for secure areas
The optional AI500 Digital Interface provides easy access to configurations, current measurements, and internal data loggers via data communication from non-hazardous areas. In order to build large and complex facilities, up to 32 AI500 branches can be realized; This allows access to up to 128 pulsars – useful for planning maintenance and maintenance measures.
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It is suitable for industrial safety monitoring and on-site inspection scenarios.