Senva TGW-B3X-A : Wall Mount R134A (Multi-Gas R407C, R404A, R22, R123) Refrigerant Sensor/Controller, BACnet MS/TP, Modbus RTU, Modbus ASCII Output, LCD Display, Clear/Tinted Enclosure, 7-Year Warranty
The Senva TGW-B3X is a refrigerant sensor and controller designed for duct mount applications. This device is specifically calibrated for R134A and supports multiple gases, including R407C, R404A, R22, and R123. With BACnet MS/TP, Modbus RTU, and Modbus ASCII output capabilities, it provides seamless integration into building automation systems. The unit features an LCD display with clear/tinted enclosure options and comes with a 7-year warranty. The TG Series is an ideal solution for refrigerant leak detection in various settings, such as mechanical rooms. It can be ordered pre-calibrated for R134A or R410A, or factory calibrated for other refrigerants. The TGW-B3X sensor/controller can function as a stand-alone unit, controlling exhaust fans or interfacing with variable frequency drives.
Applications
- Refrigerant leak detection in mechanical rooms
- Pre-calibrated for R134A but senses any refrigerant including R134A, R410A, R407C, R404A, R22, R123
- Monitor multiple gases with one mounted unit
- 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) |
| Fan relay setpoint | 300 ppm (default), 0-1000 ppm (menu selectable) |
| Alarm Relay | |
| Alarm relay characteristics | N.C. 1A@24/30VDC (50/60Hz) (no mains connection) |
| Alarm relay setpoint | 600 ppm (default), 0-1000 ppm (menu selectable) |
| Display 3-1/2 digit LCD | Green, Yellow, Red |
| Audible Alarm | 85dB Piezo transducer 30 minutes above alarm setpoint (menu selectable) |
| General Purpose Sensor Performance | |
| Type | MOS |
| Detection Range | 0-1000 ppm |
| Resolution | 1 ppm |
| Listed Gas types 2-9 | Factory calibrated for respective gas |
| R134A Sensitivity(2) | @300ppm test gas: 450 ppm R410A, 425 ppm R407C, 400 ppm R404A, 370 ppm R22, 300 ppm R134A, R134 |
| Other detectable gases(3) | R407A, R407F, R427A, R452B, R507, R448A, R422A, R422D, R452A, R514A, R32, R123 |
| Life expectancy | >10 years (typical life expectancy for MOS sensors) |
| Coverage Area | 5000-7500 square feet |
| Operating Environment | |
| Temperature, Operational | -30 to 50oC (-22 to 122oF) (CO2 versions rated to -40o C) |
| Humidity | 15-95% continuous, 0-95% intermittent |
| Max Elevation | 2000m, Refrigerant 2629 m (8625 ft) |
| Enclosure (Wall & Duct) | |
| Material | ABS/Polycarbonate |
| Dimensions | 4.0”h x 4.4”w x 2.1”d |
| Conduit Opening | Tapped 1/2” NPT |
| Rating | P43 or NEMA 3R |
| Agency Compliance | UL61010-1 Listed UL, cUL, CE |
Datasheets
- Enclosure Style:
- Wall
- Gas Element:
- Refrigerant
- Analog Output:
- 0
- Relay Output:
- 2 SPDT
- Communication:
- BACnet/Modbus
- Display:
- LCD Display
