Sierra Instruments Instruction Manual
Smart-Trak
®
2 Series 100
30
Air
NOTE:
If gas is flowing the Pilot Module will immediately begin to accurately
display the gas mass flow rate on the LCD panel. If you have chosen alternate units
or another gas, the display will show the selected units instead of the above.
2.
Open the gas supply:
Smart-Trak 2 is now ready to monitor the gas mass flow
rate. Let the instrument warm up for at least 15 minutes for optimal
performance.
Your Smart-Trak 2 instrument is now ready for use!
Pilot Module Operation, Mass Flow Controllers
After your instrument is installed and the system has undergone a complete leak
check as discussed in detail in Chapter 2, follow these steps:
1.
The valve will remain closed until power is supplied.
See Chapter 2
for wiring instructions.
CAUTION:
Remember that the valve in the Smart-Trak 2 is not a guaranteed
positive shut-off device. For dangerous applications, Sierra recommends use of
an external shut-off safety valve.
When power is applied, the flow control valve will operate per the instructions it
receives from the Pilot Module. When the Smart-Trak 2 is delivered, the valve will
be in the Automatic (Normal) state and the Pilot Module will provide the correct
zero setpoint reference. As a result, the valve will be closed. However, the valve
will return to the state it was in the last time the instrument was operated.
WARNING: If you do not know the setpoint or the valve state of the Mass
Flow Controller before it was shut down, you must assume that the valve will
open when power is applied. TAKE NECESSARY PRECAUTIONS.
2.
Power Up Your Instrument:
Apply power to your instrument using
Sierra’s power supply or your own input power source. See Chapter 2,
Figure 2-5: Power Supply Requirements. When power is first applied,
the Pilot Module will display:
Version
2.04X
Read Parameters
If no gas is flowing, after another 5-10 seconds the display will read: