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GfG Dynagard Stand-alone System, Hydrogen Sulfide (H2S) - 3703-100

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GfG Dynagard Stand-alone System, Hydrogen Sulfide (H2S) - 3703-100

GfG Dynagard Stand-alone System, Hydrogen Sulfide (H2S) - 3703-100


3703-100 Dynagard Stand-alone System, Hydrogen Sulfide (H2S) by GfG

Single-point Area Monitors

Dynagard AutoCal® monitors are single point detection instruments that accurately measure toxic gases and oxygen levels. Alarm lights on the front panel illuminate and an internal horn sounds when gas concentrations are exceeded.

Simple and effective

The units accurately display values on a large backlit LED and can transmit a linear 4-20 mA output. AutoCal® calibration and maintenance is done effortlessly through front panel push-buttons. Smart sensors enable the user to change measuring ranges or gas types in the field without a need for additional programming. The Dynagard is equipped with onboard relays for two adjustable alarm points. It also has one sensor fault for local connection and activation or deactivation of external devices like strobes, fans, auto dialers etc.


  • AutoCal® automatic calibration
  • Smart sensor technology
  • Digital display / control connection
  • Internal push-button alarm settings
Dynagard Stand-alone System Specifications:
Detection principal Electrochemical
Detection method Diffusion
Response time T90 <5 sec. (depending on gas)
Expected sensor life 2 years (depending on gas)
Display 4 digit LCD
Power, alarm and fault LED's
Power supply 115 VAC / 24 VDC
Output signal Linear 4-20 mA
Relays 2 alarm points, 1 fault – voltage free
Voltage: 250 VAC 50/60 Hz or 250 VDC maximum
Current: 4 A AC/DC maximum
Horn 95 dB at one foot
Temperature range +5 to +115°F / -15 to +46°C
Humidity range 15 to 96% rh
Pressure range 920 to 1,080 hPa
Housing UL 94 HB polystyrene enclosure with clear poly carbonate lid
Weight 2 pounds (907 g)
Dimensions 7.9x7.5x4.8 inches (200x190x120 cm (HxWxD)
Housing approvals IP 65
Accessories Remote display / control

Gases and Ranges:
Gases Detection ranges
Ammonia (NH3) 0-200 or 1,000 ppm
Carbon Monoxide (CO) 0-500 or 2,000 ppm
Chlorine (Cl2) 0-50 or 250 ppm
Chlorine Dioxide (ClO2) 0-1.0 ppm
Ethylene Oxide (C2H4O) 0-20 ppm
Hydrogen (H2) 0-2,000 ppm or 0-4% volume
Hydrogen Chloride (HCL) 0-200 ppm
Hydrogen Cyanide (HCN) 0-200 ppm
Hydrogen Sulfide (H2S) 0-200 or 1,000 ppm
Nitrogen Dioxide (NO2) 0-50 or 200 ppm
Oxygen (O2) 0-25% volume
Sulfur Dioxide (SO2) 0-50 or 500 ppm

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