Instruction manual

Instruction Manual Smart-Trak
®
50 Series
IM-50 Rev. A.2 15
Chapter 3: Digital Operation
Mass Flow Meter
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. Power Up Your Instrument: Apply power to your instrument. See Chapter 2, Figure
2-2: Smart-Trak
®
50 Series Connections. After a few seconds of warm up, the
display (optional) will turn on.
2. Open the gas supply: Smart-Trak
®
50 Series MFM is now ready to monitor the gas
mass flow rate. Let the instrument warm up for at least 15 minutes for optimal
performance accuracy.
Your Smart-Trak
®
50 Series Mass Flow Meter is now ready for use!
Mass Flow Controller
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 and a setpoint is given. The
unit was shipped to you without a setpoint. However, we recommend that you
confirm this yourself, for safety sake. See Chapter 2 for wiring instructions.
CAUTION! Remember that the valve in the Smart-Trak
®
50 Series is NOT a guaranteed
positive shut-off device. For dangerous applications, Sierra reccommends use of an external
shut-off safety valve. DO NOT LEAVE A SETPOINT APPLIED FOR AN EXTENDED PERIOD
OF TIME TO A CONTROLLER WHEN THE GAS SUPPLY IS SHUT OFF OR BLOCKED.
Damage may result and the instrument will become hot to the touch.
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 2-2: After a few
seconds of warm up the display (Optional) will turn on.
3. Open the gas supply: Smart-Trak
®
50 Series MFC is now ready to monitor and
control the gas mass flow rate. Let the instrument warm up for at least 15 minutes for
optimal performance accuracy.
Your Smart-Trak
®
50 Series Mass Flow Controller is now ready for use!
The Smart-Trak
®
50 Series is not a
loop-powered
device. Do not
apply power to the
4-20 mA outputs.