Fixed Gas Detector

GDS 301 Single Line Sample Unit

GDS 301 single line gas sample unit

The GDS 301 system is designed to monitor gas levels in situations where the positioning of conventional gas sensors may not be practical. This may be due to equipment security, cable routing, access for detector head installation/maintenance, harsh environment or a cost effective means of monitoring designated hazardous areas, typically – tunnels, marine applications, underground/high level voids, process control, brewing, horticulture, livestock husbandry.

  • Flammable Gases
  • Refrigerant Gases
  • Toxic Gases
  • Continuous monitoring
  • Flammable, oxygen or toxic gases
  • Easily installed and maintained
  • 2 alarm levels & relays
  • 4-20mA analogue output
  • Line blockage and pump fail monitor
  • Delay to alarm option

About this product

The GDS 301 continuously draws a gas sample along a single fixed line to one sensor, for places where a conventional sensor is hard to fit or reach, such as tunnels, voids, marine and process areas. Unlike the GDS 306 (up to 20 points) and GDS 305 (up to 48 points), which step through several lines in turn, the 301 watches one line all the time. We supply, install, commission and service all three.

Key specifications

SamplingContinuous, single sample line
GasesFlammable, oxygen or toxic
SensorsInfrared, electrochemical, catalytic and other 4 to 20mA sensors
Alarms2 alarm levels with relays; delay to alarm option
Output4 to 20mA analogue
MonitoringLine blockage and pump fail
CalibrationBuilt-in manual test gas selector valve
Power230 or 115V AC mains

Supplied, installed and serviced by Vistec

We supply, install, commission and service this equipment across Ireland. Call 01 289 7720 or email info@vistec.ie for advice or a quote.