Senva TGD-A3X-AS : Duct Mount R134A (Multi-Gas R407C, R404A, R22, R123) Refrigerant Sensor/Controller, 0-10V, 0-5V, 1-5V and 4-20mA Selectable Output, LCD Display, Solid/Opaque Enclosure, 7-Year Warranty
The Senva TGD-A3X-AS is a duct-mount refrigerant sensor/controller pre-calibrated for R134A or R410A, but it can also be factory calibrated for other refrigerants, including R407C, R404A, R22, and R123. The TGD-A3X-AS sensor/controller offers selectable output options such as 0-10V, 0-5V, 1-5V, and 4-20mA. It features an LCD display and comes in a solid/opaque enclosure with a 7-year warranty.
The TG Series refrigerant sensors by Senva are an ideal solution for refrigerant leak detection in mechanical rooms. They can be used for monitoring multiple gases with a single mounted unit and are capable of alerting occupants of elevated gas levels. The analog output supports daisy chain wiring, allowing for cost-effective coverage of large areas. The TGD-A3X-AS can function as a standalone controller, utilizing the relay for exhaust fan operation or the output for direct control of a Variable Frequency Drive (VFD).
The TGD-A3X-AS features a 3-1/2 digit LCD with color indicators, and an audible alarm with a Piezo transducer is included. The sensor, based on Metal Oxide Semiconductor (MOS) technology, has a detection range of 0-1000 ppm and is factory calibrated for specific gases.
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. |
| Analog Outputs | |
| Programmable output | 0-10V (default), 0-5V, 1-5V, 4-20mA (menu selectable) |
| Output scaling | Menu selectable; see installation manual for ranges |
| 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:
- Duct
- Gas Element:
- Refrigerant
- Analog Output:
- 2
- Relay Output:
- 2 SPDT
- Communication:
- None
- Display:
- LCD Display
