GSTA CO/NO2

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Dwyer GSTA CO/NO2 Transmitter | Field Selectable 4-20mA & Voltage Output

DWYER GSTA CO/NO2 TRANSMITTER | FIELD SELECTABLE 4-20mA & VOLTAGE OUTPUT 

The Dwyer Series GSTA  is a high-accuracy carbon monoxide (CO) and nitrogen dioxide (NO₂) gas transmitter designed to monitor and control gas concentrations in commercial and industrial settings.

  • Add optional integral LCD displayby adding -LCD to end of modelnumber (Example: GSTA-C-LCD)
  • Industrial grade replaceable CO or NO2 sensors
  • Field selectable current or voltage output on GSTA models
  • Service display tool for set-up and calibration of models without a LCD

APPLICATIONS:

  • Garage or loading dock ventilation
  • Mechanical room monitoring

 

DWYER GSTA CO/NO2 TRANSMITTER | FIELD SELECTABLE 4-20mA & VOLTAGE OUTPUT 
The Series GSTA monitors CO or NO₂ levels using industrial-grade, field-replaceable electrochemical sensors that offer an extended working life. CO units are typically used to measure gasoline engine exhaust, while NO₂ units detect diesel engine exhaust. The transmitters are highly versatile, featuring field-selectable current and voltage outputs (4-20 mA, 0-5 V, or 0-10 V), making them compatible with nearly any building management controller. They are housed in a UV-resistant, glass-filled polycarbonate enclosure rated at IP64 and offer on-site calibration via push-buttons or an optional remote display.

PRODUCT USES:

  • Underground Parking Garages: Monitors toxic engine exhaust for ventilation control.
  • Loading Docks: Detects CO/NO₂ levels during vehicle idling.
  • Mechanical & Boiler Rooms: Ensures safety in areas with fuel-burning equipment.
  • Automobile Service Bays: Protects workers from accumulation of gasoline and diesel exhaust.

Technical Sheets

Instruction Manual

Catalog Page

Specifications

DWYER GSTA CO/NO2 TRANSMITTER | FIELD SELECTABLE 4-20mA & VOLTAGE OUTPUT  – KEY SPECIFICATIONS

  • Sensors: Field-replaceable electrochemical; 2–4 year typical lifespan.
  • Selectable Ranges: CO (200 or 500 PPM); NO₂ (10 PPM).
  • Output Signals: Switch-selectable 4-20 mA, 0-5 V, or 0-10 V.
  • Accuracy: CO: ±2% FS; NO₂: ±3% FS at time of calibration.
  • Coverage Area: 5,000 to 7,500 sq. ft. typical.
  • Temperature Limits: -4 to 122°F (-20 to 50°C).
  • Enclosure Rating: IP64.
  • Power Requirements: 10-35 VDC for current; 15-35 VDC or 15-29 VAC for voltage.

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