16 Chapter 4
Command Set Detailed
DmFTPnnnn
Backwards compatible with Series 4000 / 4100 flow meters.
Returns Flow, Temperature, and Pressure data at an interval equal to
the sample rate.
The data is returned in the order of Flow, Temperature, and Pressure.
All three measurements may be requested or a combination of the
three as indicated below.
Denotes data format: A = ASCII, B = binary,
C = ASCII followed by CR and LF.
Requests a flow reading (replace with lower case “x” if a
flow reading is not desired).
Requests a temperature reading (replace with a lower case
“x” if a temperature reading is not desired).
Requests a pressure reading (replace with a lower case “x”
if a pressure reading is not required).
Denotes maximum number of samples to return, range is
1 to 1000. (“0500” denotes 500 readings, leading zeroes
must be included).
Example 1) DAFxP0250
Requests 250 readings of flow and pressure data in ASCII format.
Example 2) DBxTx1000
Requests 1000 readings of temperature in binary format.
Flow data is returned in units of Std. L/min or L/min (see SUn
command).
Temperature data is returned in units of °C.
Pressure data is returned in units of kPa.
Before initiating this command, the sample interval, gas calibration,
and flow units should be set.
The sample interval between data points is set using the SSRnnnn
command.
The gas calibration is set using the SGn command.
The units of standard or volumetric flow is set using the SUn
command.
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