Futuristic and Visionary Car Park Basement Ventilation Solution
Carbon Monoxide (CO) and Nitrogen Dioxide (NO2) as per National Building Code (NBC) are most commonly and widely used gas sensor for basement car park application to detect the accumulation and increase in CO and NO2 gas concentration exhausted from petrol and diesel powered vehicles and locomotives. Our main objective as per Global standards is the dilute the gas concertation by means on purging fresh air and simultaneously exhausting the accumulated toxic gases with the help of Supply and exhaust air fans along with the dual speed Impulse fans (JET air fans) to distribute the air across the entire basement area.
As per European Standard acc. To EN 50545-1 and as per ASHRAE Standard 62.1, CO and NO2 gas sensor are intended to control a ventilation system and/or to give an indication, alarm or any other signal to warn of a toxic hazard. These gases are generically called “target gases, apart from these gases LPG, CNG (CH4) and Hydrogen (H2) are the other probable gases entitled in the car park basement application from LPG, CNG powered up vehicles along with latest battery operated/hydrogen fuel cell/hybrid technology vehicles which are highly flammable/combustible in nature and can result in a catastrophic disaster if not detected/identified at the early stages for critical life safety and asset protection which could also become the main source of fire.
For a futuristic Visionary Basement ventilation car park solution, we should adopt the following gas type such as CO, NO2, LPG, HC (CNG and H2) gases along with smart digital control system where the Gas Detectors shall be connected in a daisy loop fashion as shown below:
Here the traceability of the gas sensors and identification of the fault error signals becomes very easy compared to the conventional method of direct coupling of analog signal from each gas sensor making the system more complex, bulky and expensive.
Australian standard AS 1668.2-2012 and Building Code Australia Section “J” indicates that the ventilation of the parking structures should be continuous, 24/7. However, by ventilating only when the sensors indicate a requirement, energy can be conserved both from reduced fan operation and also from any related heating or cooling costs and CO gas radical’s detection for enhanced Very Early Fire Detection
The selection of CO sensor being the most common gas found in car park basement application also plays a vital role to achieve the energy saving and make the entire system more efficient and reliable with linear variation to detect not only just CO gas but to also detect enhanced CO gas radicals having detection capability for very early smouldering fire and smoke detection (product of gas radicals generated due to products of combustion fire)
Carbon monoxide and early smoke & fire sensor transmitter Technical Data and Specifications: (for Basement car park ventilation, enhancing gas radical CO detection for early fire and smoke due to products of combustion and smouldering fire in building application)
• Capable of detection, measurement and monitoring of carbon monoxide and carbon monoxide gas radicals
• Electro-chemical type sensor cell, Electrochemical Diffusion, Electrolyte type Gel based.
• Gel based Electrolyte and Hydrophobic filter in the sensor cell
• 0-300ppm measuring range, taking care of over range detection.
• Sensor coverage area: 465 m2 to 930 m2
• High accuracy, high repeatability, high reliability
• 2-wire loop powered connection for power supply and signal output.
• Analog output: 4-20mA (standard), 2-10V (optional)
• Modbus output
• Spring loaded terminal
• Operating temperature: -15 0C to +50 0C
• Humidity: 10-95% RH (non condensing)
• Mounting height: 1.5m – 1.8 m
• linear, proportional analog output
• Low response time ≤ 10 sec
• Accuracy: ± 3 PPM
• Low warm up time, ≤ 1 mins
• Low voltage operation: 24VDC
• Low power consumption: 22 mA, max. (0.5 VA @ +24VDC)
• Not cross-sensitive to gases like SO2, Acetone, Ammonia, Carbon Dioxide, Nitrogen dioxide, Nitric Oxide.
• Wall mountable without need of further mounting brackets.
• Plug-in, easy replaceable sensor unit for easy service and replacement (no need to change the whole unit)
• Manual trimpot and digital type calibration facility, with annual calibration frequency
• Auto recovery to zero point.
• Life expectancy of > 6 years to 10 years
• Capable of mounting in any direction, with no effect on performance, output and life of these sensors (no orientation problems)
• Poisoning protection, against background gases, lead vapours, dust etc
• Over flooding protection
• Reverse polarity and short circuit protection
• Simplified maintenance via exchange of pre-calibrated sensor cartridges or easy on site-calibration
• IP65 protected housing, with provision of dust and moisture protection with hydrophobic filter arrangement.
• Tough, rugged, glass-fibre reinforced, Impact resistant, fully gasketed polycarbonate IP 65 enclosure
• IMMUNITY TO RF/FM INTERFERENCE as per the guidelines of EMC- Directive 2004/ 30/ EU.
• Compliance to CE and UL standards, EMC Directives 2014/30/EU, IP 65/66 (EN 60529/ DIN VDE – 0470-1), Impact Resistant IK08 (DIN EN5012/VDE 0470 segment 100), UL508 & CSA C22.2 No. 14-13Certified Enclosure for IndustrialControl Equipment, UL50 & CSA 22.2 No. 94.1-07 Certified Enclosure for Electrical Equipment.
• Enclosure flammability in accordance to UL 94: V2.
Toxic (NO2, O2, SO2 etc) gas sensor transmitter Technical Data and Specifications:
• Electro-chemical type sensor cell
• Gel based Electrolyte and Hydrophobic filter in the sensor cell
• High accuracy, high repeatability , high reliability
• 3-wire loop powered connection for power supply and signal output.
• Analog output: 4-20mA (standard) or 2-10V
• Modbus output
• Operating temperature: as per gas type
• Humidity: as per gas type
• Mounting height: as per gas type
• linear, proportional analog output
• Low response time: as per gas type
• Accuracy as per gas type of measuring range.
• Low warm up time: as per gas type
• Low voltage operation: 24VDC/VAC
• LCD Display: Two lines, 16 characters each, monochrome (Optional)
• Open-collector (transistor) output (Optional)
• Low power consumption: 23 mA, max. (0.6 VA for 24V)
• Not cross-sensitive to gases: as per gas type
• Wall mountable without need of further mounting brackets.
• Plug-in, easy replaceable sensor unit for easy service and replacement (no need to change the whole unit)
• Digital type calibration facility, with annual calibration frequency
• Auto recovery to zero point.
• Life expectancy: as per gas type.
• Capable of mounting in any direction, with no effect on performance, output and life of these sensors (no orientation problems)
• Poisoning protection, against background gases, lead vapours, dust etc
• Over flooding protection
• Reverse polarity and short circuit protection
• Simplified maintenance via exchange of pre-calibrated sensor cartridges or easy on site-calibration
• IP65 protected housing, with provision of dust and moisture protection with hydrophobic filter arrangement.
• Tough, rugged, glass-fibre reinforced, Impact resistant, fully gasketed polycarbonate IP 65 enclosure
• IMMUNITY TO RF/FM INTERFERENCE as per the guidelines of EMC- Directive 2004/ 30/ EU, CE
• Compliance with according EN 378, EN 45544-1, EN 50104 (for O2, EN 50545, EN 50271, EN 61010-1, ANSI/UL 61010 1, CAN/CSA-C22.2 No. 61010-1
• Device flammability in accordance to UL 94 V2
LPG, CNG, Hydrogen (H2) sensor transmitter Technical Data and specifications:(Also Applicable to all Combustible/Flammable type gas sensor transmitter)
• Catalytic (pellistor) based sensor cell, with catalytic bead
• Measuring range: 0-100% LEL (lower explosive limit) for flammability monitoring with no poisoning effect of background gases
• Catalyst capable of providing flashing point, at lower temperature, for the sensor cell.
• Microprocessor based value processing with temperature, vibration, moisture, humidity etc compensation reading
• High accuracy, high repeatability , high reliability
• 3-wire connection for power supply and signal output.
• Selectable analog output: 4-20mA or 2-10V.
• Modbus output
• Accuracy: ± 1 % LEL
• Linear and proportional signal output.
• Hardware & software according to SIL2 compliant development process
• Low response time: t50 < 3 s; t90 < 15 s
• Low voltage operation: 24V AC / DC
• Low power consumption: 75 mA, max. (1.8 VA for 24V)
• Easy maintenance and calibration by exchange of the sensor unit or by comfortable on- site calibration
• Wall mountable without need of further mounting brackets etc.
• Plug-in, easy replaceable sensor unit for easy service and replacement (no need to change the whole unit)
• LCD Display: Two lines, 16 characters each, monochrome (Optional)
• Open-collector (transistor) output (Optional)
• Life expectancy of > 3 years
• Capable of mounting in any direction, with no effect on performance, output and life of these sensors (no orientation problems)
• Poisoning protection, against background gases, lead vapours, dust etc
• Over flooding protection
• Reverse polarity and short circuit protection
• Digital type calibration facility, with annual calibration frequency
• Capable for field calibration
• IP65 protected housing, with provision of dust and moisture protection with hydrophobic filter arrangement.
• Tough, rugged, glass-fibre reinforced, Impact resistant, fully gasketed polycarbonate IP 65 enclosure
• Vibration protection (High frequency, low amplitude) and knock protection (high amplitude, low frequency)
• Fast response time
• IMMUNITY TO RF/FM INTERFERENCE as per the guidelines of EMC- Directive 2004/ 30/ EU, CE
• Compliance with according EN 50271, EN 50545:2017, EN 61010-1, ANSI/UL 61010 1, CAN/CSA-C22.2 No. 61010-1
• Device flammability in accordance to UL 94 V2
Should you have any questions or concerns regarding this matter, please feel free to contact us or reach our experts to info@alviautomation.com, sales@gasalarm.com.au
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