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Dwyer GSTC-N-D | Nitrogen Dioxide Duct Transmitter | 0-10 ppm NO2, BACnet/Modbus
The Dwyer GSTC-N-D is a duct-mount nitrogen dioxide transmitter covering 0 to 10 ppm NO2, used to monitor diesel exhaust in parking garages, loading docks and mechanical rooms and to report to a building management system over BACnet or Modbus.
- NO2 resolution 0.1 ppm, accuracy 3% FS at calibration
- Response under 25 s to 90% for NO2
- Switch-selectable BACnet MS/TP, Modbus RTU or Modbus ASCII over 2-wire RS-485
- Field-replaceable electrochemical sensor, typical life 4 years
- IP64 UV-resistant glass-filled polycarbonate housing
- Zero and span via the optional A-449 display
- Specifications
- Features
- Downloads
| Part Number | GSTC-N-D |
| Brand | Dwyer |
| Type | Nitrogen Dioxide Duct Mount Transmitter |
| Gas | Nitrogen dioxide (NO2) |
| Range | 0 to 10 ppm |
| Resolution | 0.1 ppm |
| Accuracy | 3% FS at calibration |
| Response Time | <25 s to 90% |
| Communication | BACnet MS/TP, Modbus RTU or Modbus ASCII |
| Sensor | Field-replaceable electrochemical |
| Power | 10-36 VDC or isolated 21.6-33 VAC |
| Operating Temperature | -20 to 50 °C (-4 to 122 °F) |
| Enclosure Rating | IP64 |
| Weight | 0.45 kg (1 lb) |
- Replaceable CO or NO2 sensors of industrial grade.
- On GSTC models, field-selectable BACnet or Modbus® connection.
- Option for integrated LCD display.
- For versions without an LCD, this service display tool is used for setup and calibration.
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