Air Quality Transducer for CO, mixed gas VOC, humidity, temperature i, 215,44 €

The air quality transducer FS1381 registers CO, 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. 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 CO:	0-1000 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 CO:	±5 ppm + max. ±5% from measured value (at 20°C, 1013 mbar)
Temperature dependency:	CO: ±5 ppm / K, Humidity: ±0,02% r.F. / K, Temperature: ±0,05°C / 10 K
Long term stability:	CO: ±1% FS/year, Humidity: ±1%/year, VOC: ±10% FS/year
Sensor:	CO: electrochemical sensor, 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 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 with fresh air once for approx. 10 minutes within this period. The automatic calibration can be deactivated if necessary and performed manually.
Running-in time:	CO: 1 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
Storage temperature:	-20...+50°C
Installation:	on-wall or on flush-mounted box
Approvals:	CE, EAC, RoHS