ASF1400 SENSIRION, ASF1400 Datasheet - Page 7

• Manufacturer Part Number: ASF1400
• Description: SENSOR, MASS FLOW
• Manufacturer: SENSIRION

Specifications of ASF1400

• Pressure Max: 120Pa
• Supply Voltage Range Dc: 7V To 18V
• Accuracy: ± 1%
• Air Mass Flow Range: -400sccm To 400sccm
• Svhc: No SVHC (15-Dec-2010)
• Connection Size: 5mm
• Measuring Range: .015 To 400 Sscm
• Supply Voltage Dc: RoHS Compliant
• Response Time: 142ms
• Rohs Compliant: Yes

ASF1400 Bidirectional Mass Flow Meter
• In order to send a new command to the ASF1400 make sure the ASF1400 is not in measurement mode. Issue therefore a
• Due to the limited write cycles allowed for the EEPROM, excessive configuration modifications should be avoided.
4
4.1 Absolute Maximum Ratings
Ambient storage temperature
Ambient operating temperature
Overpressure resistance
4.2 Electrical Specifications
Table 3: ASF1400 DC Characteristics.
Table 4: ASF1400 RS-232 Characteristics.
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Parameter
Power Supply DC
Operating Current
Power Dissipation
Parameter
RS232 Output
Output Voltage Swing
Power-Off Output Resistance
Output Short Circuit Current
RS-232 Input
Voltage Range
Voltage Threshold
Hysteresis
Resistance
stop command s first. After this, any instruction can be given to the ASF1400 and a new series of measurement can be
started by go↵.
Specifications ASF1400
High
Low
-65°C to 150°C
0°C to 70°C
2.0 bar
Conditions
DC
VDD = 9 V, no load
VDD = 9 V, 3kΩ at RS232 output
VDD = 9 V, no load
Conditions
Transmitter output loaded
with 3kΩ
Version 2.1
Min.
Min.
300
-15
0.8
0.2
±5
7
3
Typ.
Typ.
±18
180
1.2
1.7
0.5
±9
20
27
9
5
Max.
Max.
2.4
1.0
18
15
7
Units
Units
mW
mA
mA
mA
kΩ
Ω
V
V
V
V
V
V
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