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Sensor de qualidade de ar ambiente para mezcla de gases (VOC) com pantalla LED
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O instrumento mede: | Qualidade do Ar - VOC |
O Sensor mede: | VOC |
O sensor de mistura de gases (VOC) AO-RL2/A com visor LED mede a qualidade do ar na gama de 0...100 referente ao gás de calibração.
Para uma transformação adicional, fornece um sinal linear de 0-10 V, o sinal de saída 0-20 mA, 4-20 mA e um contacto.
A qualidade normal do ar ambiente pode ser definida de acordo com o padrão de calibração manual no dispositivo (ajuste do ponto zero).
O sensor de qualidade do ar executa um procedimento de calibração automática a intervalos regulares, pelo que os desvios a longo prazo e a deterioração da operação podem ser completamente eliminados.
Measurement range VOC | 0...100% (good / bad air quality, referring to the calibration gas) |
---|---|
Accuracy | ±15% FS |
Response time (t90) | max. 60 s (at 5% alteration) |
Long term stability | < 15% FS/year at norm load |
Sensor | metal oxide VOC-sensor |
Sensor protection | mounted inside housing |
Running-in time | 1 hour |
Supply voltage | 24 V AC/DC (±5%) |
Current consumption | max. 60 mA |
Analogue output 0-10 V | 3-wire connection, min. load resistance 100 kOhm |
Analogue output 0/4-20 mA | 3-wire connection, load resistance < 500 Ohm |
Alarm output | potential-free change-over contact max. 48 V (1 A), threshold can be defined by 270° potentiometer |
Equipment | LED display: 1-3 green (good), 4-7 yellow (average), 8-10 red (bad) |
Electrical connection | screw terminals max. 1,5 mm² |
Housing | ABS polyman, colour signal white like RAL 9003 |
Cable gland | at the backside of the housing |
Dimensions | Housing: L 82 x W 82 x H 25 mm |
Weight | ca. 70 g |
Protection type | IP30 |
Protection class | III |
Working range r.H. | 0...98% r.H. in contaminant-free, non-condensing air |
Working temperature | 0...+50°C |
Storage temperature | -20...+50°C |
Initial operation | After switch-on of the device follows a self-test and the tempering, which takes ca. 1 h depending on the environmental conditions. At this time the analogue output drifts from the actual measurement value. |
Automatic calibration | The automatic re-calibration of the output signal is started in the interval of 4 weeks and can be disabled. The device must be supply within this interval at least 10 minutes with fresh air. |
Manual calibration | The manual calibration of the output signal to 1V (zero point) will be started by pushing the button on the circuit board (push ca. 5 s until LED is blinking). Before this it is to ensure a non-stop operating of min. 2 h on air quality which is defined as normal. After successful calibration the LED will be deactivated. |
Installation | on-wall or on flush-mounted box |
Approvals | CE-conformity, EAC, RoHS |
Modelo AO-RL2/A-UI:
Transdutor de qualidade do ar para mistura de gases COV em ambiente, semáforo de 10 LED, saídas 0-10V ou 4-20mA, tensão de alimentação 24 V CA/CC.
Modelo AO-RL2/A-UIR:
Transdutor de qualidade do ar para mistura de gases COV em armário, semáforo de 10 LED, com contacto reversível, saídas 0-10V ou 4-20mA, tensão de alimentação 24 V CA/CC.
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