14
Appendix A
Instrument Temp. Range
Operation, Ambient ..........
Storage, Ambient ..............
0 to 50°C
-20 to 60°C
Physical Dimensions
External Dimensions ........
Tube Adapters ..................
(Inlet & Outlet)
Weight ..............................
Flow Body Material ...........
See Diagram
Model 4040: 22 mm male ISO Taper
Model 4043: ½ inch straight
Model 4045: ¾ inch straight
180 grams
PolyCarbonate
Computer Interface
Connector .........................
Type .................................
Baud Rate ........................
Data Bits ...........................
Parity ................................
Stop Bits ...........................
Flow Control .....................
8 pin mini-DIN
RS232 Serial
38.4 k
8
None
1
None
Analog Output (Flow Only)
Range ...............................
Resolution ........................
Maximum Current .............
Flow Accuracy ..................
0 to 10 V
13 bit
5 mA
See note
6
below.
Power
AC adapter or power supplied through mini-DIN
7.5 VDC ± 1.5 V, 300 mA maximum
Notes:
1
Accuracy stated at standard conditions of 21.1°C and 101.3 kPa.
Add an additional 0.075% of reading per 1°C away from standard
conditions when operating within the range of 0°C to 50°C.
Add an additional 0.015% of reading per 1 kPa above 101.3 kPa or
Add an additional 0.022% of reading per 1 kPa below 101.3 kPa
when operating within the pressure range of 70 kPa to 170 kPa.
2
Accuracy stated with gas temperature and flow body temperature within
±10°C of one another.
3
Accuracy stated measuring dry gas (less than 10% R.H.).
4
Includes ±0.5% of reading repeatability.
5
Volumetric flow rate is calculated from the mass flow measurement. Add
an additional 0.25% of reading to the flow accuracy to account for the
uncertainty in measuring gas temperature and pressure.
6
For analog output, accuracy offset increases from 0.05 to 0.1 Std L/min.
7
Add uncertainty of 0.2 kPa for every 10°C away from 21.1°C.
*Specifications subject to change without notice.
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