Dwyer GSTA-C Gas Transmitter

Product Description

The DWYER GSTA-C carbon monoxide transmitter monitors gas concentration in underground parking garages and loading docks. Field selectable current and voltage outputs allow the transmitter to be used with almost any building management controller. The user can select the output range to be from 0 to 50 ppm or up to 0 to 500 ppm.

• 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

Product Highlights

The GSTA-C transmitter is designed for monitoring gas concentrations in mechanical rooms, underground parking garages, and loading docks.

Product Information

Standard Information

• Brand: DWYER
• Manufacturer Part Number: GSTA-C
• Country of Origin: United States

Technical Specifications

• Output Type: V or mA
• Measurement Range: 0 - 500 ppm
• Application: Commerical Building,Industrial Site,Hospital,Mine,Aircraft
• Output Signal: Current
• Mount: Wall
• Gas Type: Carbon Monoxide
• Particle Count Max: 500ppm
• Accuracy: CO: 2% FS, at the time of calibration.
• Product Range: GSTA Series
• SVHC: No SVHC (25-Jun-2025)
• Country of Origin (subject to change): United States
• Sensor: Field replaceable electrochemical, 2 years typical lifespan.
• Range: GSTA CO: Switch selectable 200 or 500 PPM
• Output Drift: <5% per year in air.
• Coverage Area: 5000 to 7500 sq ft typical.
• Resolution: CO: 1 PPM
• Temperature Limits: -4 to 122°F (-20 to 50°C).
• Storage Temperature: For best sensor life, 32 to 68°F (0 to 20°C).
• Humidity Limits: 15 to 90% RH constant; 0 to 99% RH intermittent.
• Response Time: <45 s to 90% CO
• Span and Zero Adjustment: Via onboard push-buttons or using optional A-449 display
• Housing: UV resistant glass filled polycarbonate.
• Output Signals: GSTA: Switch selectable 4-20 mA (loop powered), 0-5 V @ 5 mA, or 0-10 V @ 5 mA; Switch selectable 0-5 V/1-5 V and 0-10 V/2-10 V; Switch selectable normal or reverse output
• Power Requirements: GSTA: Current output: 10-35 VDC, Voltage output: 15-35 VDC or 15-29 VAC
• Electrical Connection: Removable terminal block, knockouts for conduit fitting.
• Calibration: Via onboard push-buttons (LCD model only) or using optional A-449 display. Span gas concentration is field selectable.
• Enclosure Rating: IP64.
• Weight: 1 lb (0.45 kg).
• Compliance: CE.
• Enclosure Style: Wall
• Gas Element: Carbon Monoxide
• Analog Output: 1
• Relay Output: None
• Communication: None
• Display: No Display