Senva TGD-BNX-A : Duct Mount Toxic Gas NO2 Sensor/Controller, BACnet MS/TP, Modbus RTU, Modbus ASCII Output, LCD Display, Clear/Tinted Enclosure, 7-Year Warranty
The Senva TGD-BNX-A is a duct-mount toxic gas NO2 sensor/controller featuring BACnet MS/TP, Modbus RTU, and Modbus ASCII output, as well as an LCD display, all housed in a clear/tinted enclosure with a 7-year warranty. This device is particularly useful in ensuring adequate airflow in occupied spaces, making it ideal for applications such as parking lot garages. The TGD-BNX-A can also alert occupants of elevated gas levels and directly control exhaust fans. The device features a 3-1/2 digit LCD display, LEDs for status indication, and an 85dB piezo transducer for audible alarm exposure. The NO2 sensor is electrochemical, with an accuracy of ±5% of the default range and a resolution of 0.1ppm. The sensor's life expectancy is greater than 7 years, covering an area of 5000-7500 square feet. The enclosure, suitable for both wall and duct installations, is made of ABS/Polycarbonate material and complies with UL61010-1 standards, being UL, cUL, and CE listed.
Applications
- Ensure adequate air flow in occupied spaces
- Ideal fo parking lot garages
- Alert occupants of elevated gas levels
- Directly control exhaust fans
Specifications
| Power Supply | 15-30VDC/24VAC(1), 4W max, 160mA max. |
| BACnet /Modbus | |
| Protocol RS-485 | BACnet MS/TP, Modbus RTU, Modbus ASCII |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Fan Relay | |
| Fan relay characteristics | N.C. 1A@24/30VDC (50/60Hz) (no mains connection) |
| NO2 fan relay setpoint | 1ppm (default), 0-30ppm (menu selectable) |
| Alarm Relay | |
| Alarm relay characteristics | N.C. 1A@24/30VDC (50/60Hz) (no mains connection) |
| NO2 alarm relay setpoint | 3ppm (default), 0-30ppm (menu selectable) |
| Display | |
| 3-1/2 digit LCD | Indicates NO2 ppm (menu selectable) |
| LEDs | |
| Green, Yellow, Red | Green = Normal, Yellow = Warning/Fan Relay, Red = Alarm/Alarm Relay |
| Audible Alarm Exposure | |
| 85dB Piezo transducer | 30 minutes above alarm setpoint per UL2034 (menu selectable) |
| NO2 Sensor Performance | |
| Type | Electrochemical |
| Accuracy | ±5% of default range(3) ±5%of reading above 20ppm |
| Resolution | 0.1ppm |
| Life expectancy | >7 years |
| Coverage Area | 5000-7500 square feet (placed within 50' apart from a Senva TG sensor.) |
| Enclosure (Wall & Duct) | |
| Material | ABS/Polycarbonate |
| Dimensions | 4.0”h x 4.4”w x 2.1”d (+6.8” probe for duct version) |
| Conduit Opening | Tapped 1/2” NPT |
| Rating | IP20 |
| Compliance | UL61010-1 Listed UL, cUL, CE |
Datasheets
- Enclosure Style:
- Duct
- Gas Element:
- Nitrogen Dioxide
- Analog Output:
- 0
- Relay Output:
- 2 SPDT
- Communication:
- BACnet MS/TP
- Display:
- LCD Display
