GDS GD-100-PEL-230 Single-Point Gas Alarm Control Unit

The GDS GD-100-PEL-230 is a fixed single-point gas alarm control unit designed for reliable monitoring of flammable, oxygen, and toxic gas levels. It supports wall or panel mounting and is suitable for commercial buildings, boiler rooms, swimming pools, water treatment facilities, HVAC control systems, manufacturing sites, and industrial process plants.

Key Features

• Supports flammable, oxygen, and toxic gas monitoring
• Two alarm stages with relay outputs
• Internal or remote sensor compatibility
• 4–20 mA analogue input and output
• 1–5 V output
• Compact wall- or panel-mount design
• Low power consumption
• IP65-rated enclosure
• Extensive fault detection circuitry
• Adjustable alarm delays
• Audible low, high, and fault alarms rated at 68 dB at 1 m
• System function test switch
• Alarm relay inhibit during calibration
• Sounder inhibit function

Technical Specifications

• Measuring range:
• Combustible gas: LEL, % volume, ppm
• Toxic gas: ppm, % volume
• Oxygen: % volume, depletion or enrichment
• Compatible with any 4–20 mA input signal
• Display: 3½-digit digital display
• Indicators:
• Green power LED
• Flashing power indicator during the 45-second switch-on delay
• Red low/high alarm LEDs
• Amber fault LED
• Flashing alarm LEDs during system testing
• Power consumption: 4 W at full alarm
• Alarm relays:
• Low, high, and fault alarm relays
• SPCO contacts, normally de-energized
• Energized options available
• Low-gas relay can be normally energized or de-energized
• Latched or unlatched operation
• Contacts rated 5 A, 230 V AC
• Auxiliary output: 24 V DC at 100 mA maximum for non-inductive auxiliary equipment
• Alarm adjustment: Digital setting, fully adjustable from zero to full scale
• Alarm delay options: 10 seconds, 30 seconds, or 10 minutes
• Sensor inputs:
• Bridge-type three-wire detector mV input for catalytic sensors
• 4–20 mA input for electrochemical or infrared sensors
• Sensor cable: Three-core, 1.5 mm² screened cable up to 1.5 km
• Operating temperature: −10 to +50 °C
• Storage temperature: −10 to +65 °C
• Field terminals: Screw type, 2.5 mm
• Cable entry: Top, bottom, sides, and rear
• Protection rating: IP65
• Dimensions: 200 mm L × 120 mm H × 58 mm D
• Weight: 0.8 kg

The delivered package includes the GDS 100 Single-Point Gas Alarm and a certificate of conformity. The unit is described as fully functional, tested, in excellent cosmetic condition, and supplied in its original packaging.