AERASGARD®ACO2 ⁄ ALQ - CO2 - Modbus - AFTM - (LQ) - CO2 - Modbus
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ACO2 ⁄ ALQ - CO2 - Modbus AFTM - (LQ) - CO2 - Modbus Multifunctional on-wall sensors and measuring transducers, for humidity, temperature, CO2 content and air quality (VOC), calibratable, with Modbus connection The maintenance-free on-wall sensor AERASGARD ® AFTM - LQ - CO2 - Modbus (max. expansion level) and ACO2  ⁄  ALQ - CO2  ⁄  AFTM - CO2 - Modbus with Modbus connection, automatic calibration, in an impact-r esistant plastic housing with quick-locking screws, plastic sinter filter (replaceable), optionally with/without display, for determining the CO2-content of the air (0...5000 ppm), of the air quality (0…100 %  V OC), the temperature (–35...+80 °C) and the relative air humidity (0…100 % RH). International system of units SI (default) can be changed to imperial (via Modbus). The following parameters can be accessed via the Modbus: Temperature, relative humidity, air quality (VOC), carbon dioxide (CO2) and atmospheric pressure. The sensor is used in offices, hotels, convention centres, apartments, shops, etc. for the purpose of evaluating the indoor climate. This enables energy-saving room ventilation on an as-needed basis, thereby reducing operating costs and improving well-being. One sensor for every 30 m² of space is recommended. A long-term stable, digital humidity and temperature sensor guarantees exact measurement results. The CO2 measurement is performed using an optical NDIR sensor (non-dispersive infra-red technology). The detection range is calibrated for standard applications such as monitoring residential rooms and conference rooms. The air quality is detected by a VOC sensor (mixed gas sensor for volatile organic substances). This sensor determines the loading of the room air due to contaminated gases such as cigarette smoke, body perspiration, exhaled breathing air, solvent vapours, emissions etc. With regard to the expected air contamination, low, medium or high VOC sensitivity can be selected. Innovative Modbus sensor with galvanically separated RS485-Modbus-interface, selectable bus termination resistance, DIP switch for setting the bus parameters and bus address in current-free state, internal LEDs for telegram status display, two separate push-in terminals and large three-line display (illuminated; with customised programming in the 7-segment and dot-matrix range). The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible. Display screen (cyclic) TECHNICAL DATA Voltage supply: Power consumption:  <  4.8 W ⁄ 24 V DC typically; <  6.8 VA ⁄ 24 V AC typically; peak current 200  mA SI (default) or Imperial (switchable via Modbus) Data points: temperature [°C] [°F], relative humidity [% RH], atmospheric pressure [hPa], air quality (VOC) [%], carbon dioxide (CO2) [ppm] digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability Sensor protection:  plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable (optional metal sinter filter, Ø 16 mm, L = 32 mm) Measuring range, humidity:  0...100 % RH Operating range, humidity:  0...95 % RH (without dew formation) Deviation in humidity:  Measuring range, temperature:  –35...+80 °C Operating range, temperature: –10...+60 °C Display screen (static) Deviation in temperature:  AIR QUALIT Y (VOC) VOC sensor (metal oxide) with automatic calibration (VOC = volatile organic compounds) 0...100 % air quality; referred to calibrating gas; multi-range switching VOC sensitivities (low/medium/high) typically ± 20 % of final value (referred to calibrating gas) > 60 months (under normal load conditions) Atmospheric pressure (Example Index 5) CARBON DIOXIDE (CO2) Sensor (CO2): optical NDIR sensor (non-dispersive infra-red technology) including atmospheric pressure compensation (up to 1100  m bar) with manual calibration (via zero button), with automatic calibration (can be deactivated via Modbus) typically ± 30 ppm (± 3 % of measured value) ± 5 ppm per °C or ± 0,5 % of measured value per °C (whichever is higher) Programmable display screen Pressure dependence (CO2): ± 0.13 % per mm Hg Long-term stability (CO2):

ACO2 ⁄ ALQ - CO2 - Modbus AFTM - (LQ) - CO2 - Modbus Multifunctional on-wall sensors and measuring transducers, for humidity, temperature, CO2 content and air quality (VOC), calibratable, with Modbus connection AFTM - LQ - CO2 - Modbus AFTM - CO2 - Modbus with plastic sinter filter (standard) AFTM - LQ - CO2 - Modbus AFTM - CO2 - Modbus AFTM - LQ - CO2 - Modbus AFTM - CO2 - Modbus with display and plastic sinter filter (standard) SF -K Plastic sinter filter (standard) SF -M Metal sinter filter (optional) TECHNICAL DATA Bus protocol: (continued) Modbus (RTU mode), address range 0...247...

ACO2 ⁄ ALQ - CO2 - Modbus AFTM - (LQ) - CO2 - Modbus Multifunctional on-wall sensors and measuring transducers, for humidity, temperature, CO2 content and air quality (VOC), calibratable, with Modbus connection ACO2 -Modbus ALQ - CO2 -Modbus Dimensional drawing AFTM - LQ - CO2 - Modbus AFTM - CO2 - Modbus Dimensional drawing SF -K plastic sinter filter (standard) AFTM - LQ - CO2 - Modbus AFTM - CO2 - Modbus with metal sinter filter (optional) SF -M metal sinter filter (optional) mail @ SplusS.de

ACO2 ⁄ ALQ - CO2 - Modbus AFTM - (LQ) - CO2 - Modbus Multifunctional on-wall sensors and measuring transducers, for humidity, temperature, CO2 content and air quality (VOC), calibratable, with Modbus connection AFTM - LQ - CO2 - Modbus with display Schematic diagram DIP A: Bus address DIP B: Bus parameters (Baud rate, parity ...) Telegram indicator Reception (LED green) Error (LED red) Offset correction LED (internal status) Reset button AERASGARD ® ACO2 - Modbus AERASGARD ® ALQ - CO2 - Modbus AERASGARD ® AFTM - CO2 - Modbus On-wall sensor for CO2 content, Deluxe On-wall sensor for CO2...