Dwyer Instruments GSTC-N | Nitrogen Dioxide Transmitter with BACnet & Modbus Communication
Part No. GSTC-N-D
Genuine Dwyer Instruments GSTC-N-D nitrogen dioxide transmitter in duct-mount configuration, in stock at General Tech Services LLC, UAE. Designed for nitrogen dioxide monitoring in mechanical rooms, underground parking garages, loading docks and other ventilation applications. Free UAE-wide shipping.
Request a quote in under a minute - call +971 6 5436933.
Product Overview
The Dwyer GSTC-N-D is a duct-mount nitrogen dioxide (NO₂) transmitter designed to monitor gas concentrations associated with diesel engine exhaust. It is suitable for applications such as underground parking garages, loading docks, mechanical rooms and ventilation systems where continuous NO₂ monitoring is required.
The Series GSTC communicates over 2-wire RS-485 using BACnet MS/TP or Modbus® RTU, allowing integration with building management systems and other compatible controllers.
The transmitter uses an industrial-grade, field-replaceable sensor. Field calibration and service can be performed using the A-449 remote LCD service display, which also provides service information when the sensor reaches the end of its operating life.
For the factory-calibrated version, see GSTC-N-D-FC, which carries the same core configuration with a factory calibration certificate.
Key Benefits
- Monitors nitrogen dioxide (NO₂) associated with diesel engine exhaust
- Duct-mount configuration for in-duct gas sampling
- Industrial-grade, field-replaceable sensor
- BACnet MS/TP or Modbus® RTU communication over 2-wire RS-485
- Suitable for building management system integration
- A-449 remote LCD service display for setup and field calibration
- Designed for mechanical rooms, parking garages and loading dock ventilation applications
- Genuine Dwyer Instruments stock with free UAE-wide shipping
Who This Product Is Best For
- Underground parking garages requiring NO₂ monitoring for ventilation control
- Loading docks where diesel exhaust monitoring is required
- Mechanical rooms requiring continuous gas monitoring
- BMS integrators using BACnet or Modbus communication
- Ventilation system integrators requiring duct-mounted NO₂ sensing
How to Specify & Commission It
- Confirm that the application requires nitrogen dioxide (NO₂) monitoring and select a suitable duct location.
- Install the GSTC-N-D according to the manufacturer's installation requirements and provide suitable access for wiring and servicing.
- Connect power and the 2-wire RS-485 communication network for BACnet MS/TP or Modbus RTU.
- Configure the required communication protocol and network address.
- Use the A-449 remote LCD service display for field calibration and service checks when required.
- Verify the transmitter readings and communication with the connected BMS or ventilation controller.
Frequently Asked Questions
What gas does the GSTC-N-D detect?
The GSTC-N-D detects nitrogen dioxide (NO₂), which is commonly monitored for diesel engine exhaust applications.
How does the GSTC-N-D connect to a building management system?
It communicates over 2-wire RS-485 using either BACnet MS/TP or Modbus RTU.
Is the GSTC-N-D a wall-mount or duct-mount transmitter?
The GSTC-N-D is a duct-mount model, designed for in-duct gas monitoring.
Does the GSTC-N-D have an integral display?
No. The GSTC-N-D does not have an integral LCD. The A-449 remote LCD service display is used for setup, calibration and servicing.
Can the sensor be replaced?
Yes. The GSTC-N-D uses an industrial-grade field-replaceable sensor.
How is the GSTC-N-D calibrated?
Field calibration can be performed using the A-449 remote LCD service display. The service display can also indicate when the sensor requires replacement.
Is a factory calibration certificate available?
The standard GSTC-N-D does not include the factory calibration certificate. The GSTC-N-D-FC version provides the same core configuration with a factory calibration certificate.
Is genuine Dwyer stock available with UAE shipping?
Yes. General Tech Services LLC supplies genuine Dwyer Instruments products with free UAE-wide shipping. Call +971 6 5436933 for pricing and current availability.
Request a Quote Today
For pricing, stock availability or ordering information, contact General Tech Services LLC.
Call +971 6 5436933
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