Flow transducer duct for airflow, volume flow and temperature, digital output

FS1421


  • 0-20 m/s, 0...+50°C

  • accuracy ±0,3 m/s

  • 0-10 V, 4-20 mA, relay

  • 3 scales per device

  • optional with LCD display

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Commodity Group 4

SKU Flow Volume flow Temperature Output Equipment Price € net / gross * Availability Qty Action
FS1421-MBR-F1-X 0-20 m/s - - Modbus RTU -
Excl. Tax: €200.02 Incl. Tax: €232.02
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FS1421-MBR-F1T1-DR 0-20 m/s - 0...+50°C Modbus RTU Display, Relay
Excl. Tax: €281.14 Incl. Tax: €326.12
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FS1421-MBR-F1T1V1-D 0-20 m/s 0-200.000 m³/h 0...+50°C Modbus RTU Display
Excl. Tax: €286.88 Incl. Tax: €332.78
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FS1421-MBR-F1V1-DR 0-20 m/s 0-200.000 m³/h - Modbus RTU Display, Relay
Excl. Tax: €288.37 Incl. Tax: €334.51
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FS1421-MBR-F1T1V1-R 0-20 m/s 0-200.000 m³/h 0...+50°C Modbus RTU Relay
Excl. Tax: €259.34 Incl. Tax: €300.83
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FS1421-MBR-F1-R 0-20 m/s - - Modbus RTU Relay
Excl. Tax: €218.38 Incl. Tax: €253.32
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FS1421-MBR-F1T1-R 0-20 m/s - 0...+50°C Modbus RTU Relay
Excl. Tax: €235.24 Incl. Tax: €272.88
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FS1421-MBR-F1T1V1-DR 0-20 m/s 0-200.000 m³/h 0...+50°C Modbus RTU Display, Relay
Excl. Tax: €305.24 Incl. Tax: €354.08
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FS1421-MBR-F1V1-R 0-20 m/s 0-200.000 m³/h - Modbus RTU Relay
Excl. Tax: €242.47 Incl. Tax: €281.27
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FS1421-MBR-F1T1V1-X 0-20 m/s 0-200.000 m³/h 0...+50°C Modbus RTU -
Excl. Tax: €240.98 Incl. Tax: €279.54
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FS1421-MBR-F1-DR 0-20 m/s - - Modbus RTU Display, Relay
Excl. Tax: €264.28 Incl. Tax: €306.56
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FS1421-MBR-F1T1-X 0-20 m/s - 0...+50°C Modbus RTU -
Excl. Tax: €216.88 Incl. Tax: €251.58
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FS1421-MBR-F1T1-D 0-20 m/s - 0...+50°C Modbus RTU Display
Excl. Tax: €262.78 Incl. Tax: €304.82
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FS1421-MBR-F1V1-X 0-20 m/s 0-200.000 m³/h - Modbus RTU -
Excl. Tax: €224.11 Incl. Tax: €259.97
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FS1421-MBR-F1V1-D 0-20 m/s 0-200.000 m³/h - Modbus RTU Display
Excl. Tax: €270.01 Incl. Tax: €313.21
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FS1421-MBR-F1-D 0-20 m/s - - Modbus RTU Display
Excl. Tax: €245.92 Incl. Tax: €285.27
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Measuring principle calorimetric measuring method
Measurement range flow 0-20 m/s
Measurement range volume flow (calculated) 0-200.000 m³/h
Measurement range temp. 0...+50°C
Accuracy ±0,3 m/s + max. ±4% FS (@ 20°C, 45% r.H., 1013 mbar), ±0,5 K (@ 20°C, > 1 m/s)
Temperature dependency ±1% FS / 10 K
Long term stability ±1% FS/year, ±0,2 K/year
Response time (t90) > 4 s @ 10 m/s
Running-in time < 30 s at initial operation because of tempering
Supply voltage 24 V DC (±5%)
Current consumption max. 100-200 mA, depending on the selected measurand and equipment
Digital output Modbus RTU
Alarm output 1 x potential-free change-over contact, 48 V, 1 A
Switching Hysteresis Relay can be entered in the register
Dimensions Housing: L 89 x W 80 x H 47 mm, Immersion depth max.: 205 mm, Protection tube: Ø 16 mm
Electrical connection push-in terminal, no tools required, time-saving
Housing Polycarbonate PC UL 94 V0 with hinge locks, color signal white similar to RAL 9003
Cable gland PG11 high-strength cable gland with strain relief
Display optional LCD display with backlight on/off/auto
Material Protection tube: stainless steel V2A
Protection type Housing/electronic: IP65, Sensor: IP30
Protection class III
Working range 0,3-20 m/s, 0...98% r.H. in contaminant-free, non-condensing air
Working temperature -20...+50°C
Storage temperature -20...+50°C
Installation mounting flange (in scope of delivery)
Approvals CE, EAC, RoHS

Flow transducer FS1421 registers the airflow, volume flow and temperature. The measuring transducer converts the measured values into a digital output signal.
In the register the output attenuation, 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).