Air Quality Transducer for CO2, mixed gas VOC, humidity, temperature , 227,52 €

The air quality transducer FS1380 registers CO2, VOC, humidity and temperature. The measuring transducer converts the measured values into a digital output signal. In the register the switching threshold, hysteresis, offset value etc can be specified. A zero point adjustment can be performed using a command. The air quality sensor performs an automatic recalibration at regular interval, thus ensuring a long-term stable CO2 measurement. As special equipment a potential-free alternating contact and/or a backlit display are available The contents of the display can be rotated in steps of 90° by using a command. As special functions a series of defined measured values from other bus-participants (also cross-manufacturers) can be shown in the display. To display measured values from other bus-participants these are entered into the corresponding register by the bus-Master. The optional alternating contact can be configurated for measured values from other bus-participants. The configuration of address, transmission mode/speed, terminating resistor and master/slave function of the bus-devices can easily be done using the innovative DIP switch technology. Thus devices can quickly and easily integrated into the system and later parameterised via the master. The bus-devices can even be reset to the works settings during operation of the master. Thus the basic functionality of the device is recreated in a matter of seconds. This can be necessary in the event of incorrect parameterisations of, e.g. offset, switching threshold, display modes etc.. By means of the FS master/slave topology autarkic nodes without additional SPS master can be installed within the device series. Hereby a bus-device assumes the master function in the node. This requests the measured values from other bus-participants, automatically enters these into the corresponding register and shows them in the internal display. Furthermore the master can evaluate and operate additional actuators in the device series (analogue in- and outputs, relay station).

Measurement range temp.:	-30...+100°C
Measurement range abs. humidity:	0-80 g/m³ (calculated)
Measurement range CO2:	0-10000 ppm, scales: 0-2000/5000/10000 ppm
Measurement range air fuel ratio:	0-80 g/kg (calculated)
Measurement range r.H.:	0-100% r.H.
Measurement range dew point:	-20...+80°C DP (calculated)
Measurement range VOC:	0-100% (good / bad air quality, referring to the calibration gas)
Accuracy humidity:	±3% r.H. (30-70% r.H., else ±5% r.H., at 20°C)
Accuracy temperature:	±0,3 K (10...40°C, else ±0,5 K),
Accuracy voc:	±15% FS
Accuracy CO2:	0-2000 ppm: ±50 ppm + 2% f. mv, 2000-5000 ppm: ±50 ppm + 3% f. mv, > 5000 ppm: ±100 ppm + 5% f. mv (at 20°C, 1013 mbar, auto-calibration ON)
Temperature dependency:	CO2: ±5 ppm / K, Humidity: ±0,02% r.F. / K, Temperature: ±0,05°C / 10 K
Long term stability:	CO2: ±1% FS/year, Humidity: ±1%/year, VOC: ±10% FS/year
Sensor:	CO2: nondispersive infrared sensor (NDIR), Humidity/Temperature: combined electronic sensor, VOC: metal oxide sensor
Response time (t90):	< 5 min
Sensor protection:	mounted inside housing
Supply voltage:	24 V DC (±5%)
Current consumption:	max. 100-200 mA, depending on the selected measurand and equipment
Alarm output:	1 x potential-free change-over contact, 48 V, 1 A
Digital output:	Modbus RTU
Switching Hysteresis Relay:	can be entered in the register
Offset:	can be entered in the register
Electrical connection:	push-in terminal, no tools required, time-saving
Display:	optional LCD display with backlight on/off/auto
Automatic calibration:	The automatic CO2/VOC calibration takes place every 7 days, this compensates for any drifts and achieves excellent long-term stability. To ensure this function, the device must be supplied with power for at least 7 days without interruption and ventilated once with fresh air (CO2 300...400 ppm) for approx. 10 minutes within this period. For the CO2 calibration, the device saves the minimum CO2 value measured during this period internally. After 7 days, this minimum value is normalized to 400 ppm CO2 and the output signal corrected accordingly. The maximum correction is limited to half of the determined drift. If the measured value falls below approx. 300 ppm, the calibration is initialized to 400 ppm. The automatic calibration can be deactivated and performed manually if necessary.
Pressure dependency:	CO2: 0,16% f. mv/hPa
Running-in time:	CO2: 10 min, Humidity: 1 min, Temperature: 1 min, VOC: 1 h
Initial operation:	After switch-on of the device it runs a self-test and the zero-point calibration. Depending on the ambient conditions, this process takes approx. 1 min., during this time, the digitally output value deviates from the actual value.
Cable gland:	on the back or housing side (predetermined breaking point)
Housing:	ABS polyman, colour signal white like RAL 9003
Dimensions:	Housing: L 82 x W 82 x H 25 mm
Protection type:	IP30, IP20 (with display)
Protection class:	III
Working range r.H.:	0...98% r.H. in contaminant-free, non-condensing air
Working temperature:	0...+50°C
Manual calibration:	Manual calibration to 400pm ("fresh air") can be done by register entry or by pressing the display buttons. Prior to this, continuous operation of at least 10 minutes in fresh air must be ensured.
Storage temperature:	-20...+50°C
Installation:	on-wall or on flush-mounted box
Approvals:	CE, EAC, RoHS