Senva TGW-AHX-A Hydrogen Gas Sensor/Controller 0-50% LEL

Product Description

The Senva TGW-AHX-A is a wall and duct sensor that can be ordered as an individual sensor. The analog output model features two outputs that support daisy chain wiring. The unit can also act as a stand-alone controller, utilizing the relay for exhaust fan operation, or the output for direct control of a VFD.

• Cost-effective dual gas sensing and control
• Flexibility of analog output model
• Versatility with BACnet/Modbus model. High reliability reduces callbacks

Product Highlights

The Senva TGW-AHX-A is easy to install and has a 7-year warranty. It has an LCD display and selectable output.

Product Information

Standard Information

• Brand: SENVA
• Manufacturer Part Number: TGW-AHX-A
• Country of Origin: USA

Technical Specifications

• Display: 3-1/2 digit LCD: Indicates CO ppm, NO2 ppm (menu selectable)
• Measurement Range: 0 - 50% LEL
• Application: Industrial,Oil & Gas,Labs,Agriculture,Transportation,Mining
• Output Signal: Voltage,Current
• Power Supply: 15-30VDC/24VAC(1), 4W max, 160mA max.
• Analog Outputs: 2 programmable outputs: 0-10V (default), 0-5V, 1-5V and 4-20mA (menu selectable)
• CO output scaling: 0-200ppm (default), 0-1000ppm (menu selectable)
• NO2 output scaling: 0-10ppm (default), 0-30ppm (menu selectable)
• Temperature output scaling: -20 to 85
• BACnet /Modbus: Protocol RS-485: BACnet MS/TP, Modbus and 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 (Analog model only): Alarm relay characteristics: N.C. 1A@24/30VDC (50/60Hz) (no mains connection)
• Alarm relay setpoint: 600 ppm (default), 0-1000 ppm (menu selectable)
• LEDs: Green = Normal, Yellow = Relay, Red = Alarm
• Audible Alarm: 85dB Piezo transducer / 30 minutes above alarm setpoint (menu selectable)
• CO Sensor Performance: Type: Electrochemical
• Accuracy: 5% of range
• Resolution: 1%LEL
• Certifications: UL2034 Listed Component
• Life expectancy: >5 years
• Coverage Area: 5000-7500 square feet
• NO SensorPerformance: Type: Electrochemical
• Methane Sensor Performance: Type: Catalytic
• Detection Range: 0-50% LEL (Lower Explosive Limit)
• Propane Sensor Performance: Type: Catalytic
• Operating Environment: Temperature, continuous: -20 to 50°C
• Humidity: 15-95% continuous, 0-95% intermittent
• Max Elevation: 2000m
• Enclosure (Wall & Duct): Material: ABS/Polycarbonate
• Dimensions: 4.0"h x 4.4"w x 2.1"d
• Conduit Opening: Tapped 1/2" NPT
• Enclosure (Metal): Material & Enclosure Rating: Powder-coated steel/acrylic, NEMA 3R
• Opening: Dual air vents on the bottom of the enclosure
• Mounting: Pre-drilled for 2x4" electrical box
• Approvals: Compliance UL61010-1 Listed UL, cUL
• Warranty: 7 years
• Response Time: <10s to 90%
• Enclosure: IP43 or NEMA 3R
• Enclosure Style: Wall
• Gas Element: Hydrogen
• Analog Output: 2
• Relay Output: 2 SPDT
• Communication: None
• CO fan relay setpoint: 25ppm (default), 0-1000 ppm (menu selectable)
• NO2 fan relay setpoint: 1ppm (default), 0-30ppm (menu selectable)
• CO alarm relay setpoint: 100ppm (default), 0-1000 ppm (menu selectable)
• NO2 alarm relay setpoint: 3ppm (default), 0-30ppm (menu selectable)