Sierra Instruments Instruction Manual
Smart-Trak
®
2 Series 100
34
The seven
Upper Level Screens
display a variety of information. You are able to
move between the screens by pressing the left or right arrows. No password is
required for the Upper Level Screens.
Mass Flow Screen
When the instrument is powered up, or whenever the escape button is pressed, it
always returns to the Mass Flow Screen. This screen displays the mass flow rate,
the engineering units and your gas choice. It looks something like this:
Mass Flow
0.000
sl/m
Air
Setpoint Screen
Pushing the right arrow takes you to the Setpoint Screen. The Setpoint Screen
displays the current setpoint given to the controller, the engineering units and the
source of the setpoint signal.
The source of the setpoint can be:
•
Pilot Module/RS-232
•
4-20 mA
•
1-5 Vdc
•
0-5 Vdc
•
0-10 Vdc
For operation with the Pilot Module, the display will look something like this:
Setpoint
10.00
sl/m
Pilot Module/RS-232
If this screen does not show “Pilot Module/RS-232” at the bottom, you will not be
able to give the controller a setpoint command from the Pilot Module because the
instrument is waiting for an analog setpoint. See section below titled “Change
Setpoint Source Screen” to change the source of the setpoint signal. Alternately,
you may supply an analog setpoint to the HD DB-15 connector (see Chapter 3).