ASF1430 SENSIRION, ASF1430 Datasheet

AIR MASS SENSOR, 120PA

ASF1430

Manufacturer Part Number
ASF1430
Description
AIR MASS SENSOR, 120PA
Manufacturer
SENSIRION
Datasheet

Specifications of ASF1430

Pressure Max
120Pa
Accuracy
± 1%
Rohs Compliant
Yes
Accuracy %
1%
ASF1430
Bidirectional Mass Flow Meter
ASF1430 Product Summary
− Total mass flow integrator
The ASF1430 Mass Flow Meter enables extremely
accurate bidirectional measurement of fast changing
gas flow over four orders of magnitude. Its leading
performance is based on SENSIRION’s unsurpassed
CMOSens
precision sensor element with the amplification and
A/D converter circuit on one single CMOS chip. This
results in superior resolution, fast response time and
large dynamic range at lowest power consumption.
All measurement data is fully calibrated and
temperature compensated by means of an internal
microcontroller.
Figure 1: Block Diagram ASF1430 Mass Flow Sensor.
www.sensirion.com
Data rates up to 200 Hz
Unique dynamic range: 0.01 sccm – 400 sccm
Outstanding resolution and accuracy
Calibrated & temperature compensated
RS-232
RoHS compliant
CMOSens ® SENSOR CHIP
®
sensor technology which combines a high
v 2.3 / November 2008
Integrated
temperature
sensor
Mounted in rugged, chemically inert PBT housing the
ASF1430 is suitable for a wide range of applications.
Such include mass flow metering for process control,
medical applications, heating ventilation and air
conditioning (HVAC) solutions, as well as gas flow
metrology.
The sensor housing provides two inlets for measuring
the gas flow and withstands overpressures of 2 bar (29
psi).
The ASF1430 requires a supply voltage of 7…18Vdc
and provides an RS-232.
ASF1430 is RoHS compliant.
Resolution
settings
Sensirion - the sensor company
Output of integrated
linearized and
temperature compensated
total mass flow within
integration period
Resolution settings
determine the integration
period between 5ms and
640 ms
no longer supported

Related parts for ASF1430

ASF1430 Summary of contents

Page 1

... Figure 1: Block Diagram ASF1430 Mass Flow Sensor. www.sensirion.com v 2.3 / November 2008 Mounted in rugged, chemically inert PBT housing the ASF1430 is suitable for a wide range of applications. Such include mass flow metering for process control, medical applications, heating ventilation and air conditioning (HVAC) solutions, as well as gas flow metrology ...

Page 2

... But very often a precise total flow over a longer period is of higher interest than a fast single measurements. For this purpose the ASF1430 can be set to slower read out times (see 0). The sensor internally still integrates slices and recognizes fast signal changes but for the read out the total flow over the whole period is calculated ...

Page 3

... ASF1430 Bidirectional Mass Flow Meter 1 Mass Flow Sensor Performance Table 1: Overview of ASF1430 Gas Sensor Performance (All data for 20°C, 1013 mbar unless otherwise noted). Parameter Condition Flow Sensor direct measurement Dynamic Range 1 Customer specific bypass Resolution 400 sccm flow / 640 ms 3 < 10 sccm flow / 640 ms Lowest < ...

Page 4

... ASF1430 Bidirectional Mass Flow Meter Table 3: ASF1430 Mass Flow Sensor Resolution at different Flow Levels and integration time. Flow or Differential Pressure Level Flow Level 400 sccm 100 sccm < 10 sccm Mass Flow Integration Time 1.1 Gas Flow Characteristics Figure 2 shows the applied gas flow vs. the digital output of the ASF1430 ...

Page 5

... Figure 5: Extending the measurement range of the ASF1430 device using a bypass configuration. Only a sample of the total flow actually gets directed through the bypass channel and the sensor. are done Data Sheet ASF1430 - v 2.3 / April 2008 - 200 0 200 400 Massflow [sccm] 5/12 ...

Page 6

... ASF1430 via RS-232: RxD (Receiving Data Line) TxD (Transmitting Data Line) GND (Ground) The RS-232 protocol of the ASF1430 is configured as follows: Baudrate Data Bits Stop Bits Parity Protocol Echo With these settings, the ASF1430 device can be connected to any PC or device with an RS-232 ...

Page 7

... The commands are not case sensitive. • In order to send a new command to the ASF1430 Mass Flow Meter make sure the ASF1430 is not in measurement mode. Issue therefore a stop command s first. After this, any instruction can be given to the ASF1430 Mass Flow Meter and a new series of measurement can be started by go↵ ...

Page 8

... Table 5 for the update rate (data rate). When using the ASF1430 in GET-mode strategy a measurement is started after the GET command only. Data rate At each GET command the same EEPROM memory [Hz] cells are rewritten. 200 100 50 25 12.5 6.25 3.125 1.56 Data Sheet ASF1430 - v 2.3 / April 2008 Notes 8/12 ...

Page 9

... Low High Hysteresis Resistance www.sensirion.com -65°C to 150°C 0°C to 70°C 2.0 bar Conditions DC VDD = load VDD = 9 V, 3kΩ at RS232 output VDD = load Conditions Transmitter output loaded with 3kΩ Data Sheet ASF1430 - v 2.3 / April 2008 Min. Typ. Max. Units 171 mW Min. ...

Page 10

... For small ordering quantities the ASF1430 sensor can be ordered directly at Farnell on http://www.farnell.com. Farnell is a worldwide distributor of electrical, electronic and industrial component products. When ordering ASF1430 series devices at SENSIRION please refer to the following part numbers. For the latest product information access SENSIRION’s website on ...

Page 11

... RoHS and WEEE Statement The SDP6x0 family complies with requirements of the following directives: • be found, to • Data Sheet ASF1430 - v 2.3 / April 2008 the defective product shall be returned to SENSIRION’s factory at the expense; and the warranty period for any repaired or replaced product shall be limited to the unexpired portion of the original period ...

Page 12

... Phone 306 40 00 Fax 306 40 30 e-mail: info@sensirion.com Web: www.sensirion.com Phone: +1 805-409 4900 Fax: +1 805-435 0467 e-mail: michael.karst@sensirion.com Web: www.sensirion.com Phone: +82 31-440-9925~27 Fax: +82 31-440-9927 e-mail: info@sensirion.co.kr Web: www.sensirion.co.kr Tel : +81 3-3444-4940 Fax: +81 3-3444-4939 Web: www.sensirion.co.jp Data Sheet ASF1430 - v 2.3 / April 2008 12/12 ...

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