The Drager Polytron Pulsar 2 is the latest infrared technology in open path gas detection. Equipped with all the same functions as the standard Drager Pulsar, Drager Pulsar 2 is fitted with an ABS moulded cover and is supplied with either a junction box or certified connector to provide complete flexibility during installation.

Drager Pulsar 2 is capable of detecting a wide range of gaseous hydrocarbons. These include the alkane series from methane to hexane, propylene, methanol, ethanol and ethylene.

SIMPLE TO ALIGN AND COMMISSION - One person can easily align and commission the system without the need for special training or skills. After an initial coarse adjustment by eye, a hand held terminal provides separate “radar” displays of the Transmitter and Receiver alignments. This makes it easy to optimise the adjustment for maximum signal strength.

The built-in calibration of the Drager Polytron Pulsar does not need any manual adjustment or standard test gas. After the alignment procedure is finished a selfzeroing sequence is started to complete the commissioning of the system.

The parameters about alignment and signal strength are logged and will be used to determine any future misalignment or build up of deposits on the optical lenses.

INCREASED PERFORMANCE - Continuous communication between Receiver and Transmitter across a signal line allows the system to adapt to difficult environmental conditions and ensure highest availability.

The high power xenon lamps combined with a sophisticated algorithm which varies their intensity and frequency makes the Drager Polytron Pulsar immune to influences from solar radiation, stack flares, arc-welding or resonance effects associated with the vibration from rotating machinery, as well as environmental changes along the beam like fog, mist, and snow.

A higher flash rate is also triggered by the first indication of gas, allowing a fully validated gas reading along with a reduced response time.

FAILSAFE - The detector is designed so that no fault can go undetected. In normal operation the output signal is 4 to 20 mA, depending on the gas concentration measured.

Whereas a signal of under 1 mA indicates a fault and a signal of 2 mA indicates a beam blockage. In addition a continuous selftest of the Drager Polytron Pulsar will issue a pre-warning signal of 3.5 mA where the detector is still operational but requires some attention – for example when there is a build up of deposits on the optics, or misalignment of the transmitter or receiver. This way maintenance can be scheduled without downtime.

The Drager Polytron Pulsar carries a Safety Integrity Level rating of 2 (SIL 2).