Dwyer GSTC-N : Wall Mount Nitrogen Dioxide Transmitter, 10 PPM, BACnet MS/TP, Modbus RTU, or Modbus ASCII (switch selectable) Communication Protocol, 5-Year Warranty
The Series GSTC Carbon Monoxide Transmitter is designed to monitor gas concentrations in underground parking garages and loading docks, effectively measuring the exhaust from gasoline engines. Compatible with BACnet or Modbus® communication protocols, it integrates seamlessly with most building management controllers. For enhanced accuracy, the transmitter supports field calibration using the A-449 remote LCD display. Additionally, the display notifies users when the sensor reaches the end of its life and requires replacement.
Benefits/Features
- Easy Maintenance: Industrial-grade, replaceable electrochemical sensors with a typical lifespan of two years.
- Inventory Efficiency: Field-selectable outputs reduce the need for multiple units.
Applications
- Ventilation monitoring in garages or loading docks.
- Air quality monitoring in mechanical rooms.
Specifications:
| Sensor: | Field replaceable electrochemical, 2 years typical lifespan. |
| Range: | NO2: 10 PPM |
| Output Drift: | <5% per year in air. |
| Coverage Area: | 5000 to 7500 sq ft typical. |
| Accuracy: | NO2: 3% FS, at the time of calibration. |
| Resolution: | NO2: 0.1 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: | <25 s to 90% NO2 |
| Span and Zero Adjustment: | GSTC models: Zero only via BACnet or Modbus® communication protocol. |
| Housing: | UV resistant glass filled polycarbonate. |
| Output Signals: | GSTC: BACnet MS/TP, Modbus® RTU, or Modbus® ASCII (switch selectable) communication protocol. |
| Power Requirements: | GSTC: 10-36 VDC or isolated 21.6-33 VAC, 5.7 mA @ 24 VDC. |
| 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. |
Datasheets
 |
Dwyer GSTC Series | Carbon Monoxide Data Sheet |
|
Dwyer GSTC Series | Carbon Monoxide Catalog Pages |
- Enclosure Style:
- Wall
- Gas Element:
- Nitrogen Dioxide
- Analog Output:
- None
- Relay Output:
- None
- Communication:
- BACnet/Modbus
- Display:
- No Display
