Keywords: Toxic Gas Detector, Toxic Gas Monitor, H2S Detector, Hydrogen Sulfide Detector, NH3 Detector, Ammonia Detector, Chlorine Detector, Carbon Monoxide Detector
GT814 NOVA-Sensor Elite™ Toxic Gas Sensor is our latest intelligent model toxic gas detector which monitors the presence of toxic gases such as H2S or hydrogen sulfide, ammonia, carbon monoxide, chlorine, and other toxic gases. Self-contained device, measures and displays the concentration of gas accumulated in a protected area, performs local control functions, and optionally transmits this information to a central control point. Features a bright LCD display of gas, 4-20 mA output signal, dry contact relays, and on-screen calibration instructions. 5 Year Warranty. Made in the USA.
Use the NOVA-Sensor Toxic Gas Detector to alert personnel when life-threatening gas is present in a protected area. This detector uses an electrochemical fuel cell sensing element, and provides accurate measurements in all atmospheres. A high reserve of electrochemical activity insures a long life and excellent temperature stability. The performance is relatively unaffected by humidity, providing that conditions are noncondensing,
The display screen on the NOVA-Sensor continuously displays operating status and the actual concentration of toxic gas in parts per million (PPM). This reading is converted to a standard 4-20 mA signal, which may be connected to any remote device for remote display or logging. Relay contacts are provided which transfer when the gas SAFETY SYSTEMS TECHNOLOGY novagas toxic concentration exceeds the LOW ALARM and HIGH ALARM set points. Typical set points are adjusted by the installer upon installation and may be reset later by authorized personnel. The relays are suitable for controlling local HVAC equipment, alarm signal devices or for equipment shutdown. Fault relay contacts are also available which operate upon loss of power or internal failure of the unit.
The automatic calibration sequence is initiated by depressing the pushbutton switch located on the side of the enclosure. During calibration, step-by-step instructions are displayed on the NOVA-Sensor screen. There are no screwdriver or other manual adjustments required, and the calibration can be performed even in the presence of toxic gases.
| Sensor Type: | Electrochemical cell |
| Modes: | Normal operation, set-points, calibration, set-up |
| Warranty: | 5 Years; 1 Year for cell |
| Approvals: | Explosion-proof approved housing Class I, Division I, Groups A, B, C, D; Class I, Zone I, AEx d IIC; Type 4X ATEX: II 2G Ex d IIC Gb |
| Electrical Specifications | |
| Input Power: | 24 VDC nominal, 16 to 32 VDC |
| Relay Contact Ratings: | 6 amps @ 28 VDC or 300 VAC resistive 1/8 HP @ 120/240 VAC |
| Analog Signal: | 0-20 mA (600 Ohms or less) 0 mA Malfunction 4 mA Setup Mode/Calibrate 4 mA Zero Reading 4 – 20 mA 0-XXX PPM > 20 mA Over-range |
| Display: | Graphic Liquid Crystal Display Displays target gas concentration in PPM; Flashing screen in alarm mode; Low brightness setting in power save mode |
| Field Connections: | 4-20 mA output – three-wire shielded cable All other connections: 22 AWG (.35mm²) to 12 AWG (4.0mm²) |
| Wireless Communication: | Available with optional wireless transmitter with text, e-mail notification features |
| Environmental Specifications | |
| Operating Temperature: | Electronics: -40°F to 185°F (-40°C to 85°C) |
| Storage Temperature: | Sensors: 32°F to 68°F (0°C to 20°C) |
| Pressure Range: | Atmospheric ±20% |
| Operating Humidity: | 0-100% RH, non-condensing |
| Ingress Protection: | IP40 to IP66 |
| Mechanical Specifications | |
| Dimensions: | 14.44×5.75×4.375 inches (159x146x111 mm) |
| Weight: | 10.0 lbs (4.5kg) Aluminum housing 16.0 lbs (7.2 kg) Stainless steel housing |
| Controller Housing: | Aluminum or Stainless Steel |
| Sensor Housing: | Stainless Steel |
| Specifications subject to change without notice. | |
| Part No. | Description |
| 814-AL | Model GT814 Toxic Gas Detector Electronics in aluminum housing Sensor in stainless steel housing |
| 814-SS | Model GT814 Toxic Gas Detector Electronics in stainless housing Sensor in stainless steel housing |
| Accessories | |
| 851-1 | Rain shield, stainless steel (IP65) |
| 851-5 | Water spray shield (For IP66, requires 852-1-4) |
| 851-1 | Dust cover, stainless steel (Requires 851-5-4) |
| 854-1 | Duct mount, stainless steel |
| 859-1 | Gas sensor collection cone, stainless steel |
| 850-4 | Sensor remote junction box |
| 857 | Calibration kit (test gas sold separately) |
| 10121 | Spare calibration/test key |
Where to Buy
+1 (949) 583-1857
