Fluid Components International ST98 Manual Operation - Manual (Page 10)

FLUID COMPONENTS INTL CHAPTER 3 - OPERATION
Model ST98 Flow Meter 3 - 10 Doc. No. 06EN003291 Rev. A
Example:
Pressing [L] [ENTER] will display “Enter Code #”. Press in the passcode. Press [ENTER]. "L, U, H, Q
(quit) or D (done)> will be displayed. "L" is for the 4 mA adjustment, "U" is for the 20 mA adjustment, ‘H’ is
for the heater current adjustment, "Q" is for exiting the menu at any time, and "D" is for exiting the menu
when the user is finished entering parameters. After making a selection, “[ENTER] to save” is displayed on
line 1, and “(U)up (P)down” is displayed on line 2. If [ENTER] is pressed, “L, U, H or D (Done)>” is
displayed. If [U] or [P] is pressed, “(F)fast/slow” is displayed on line 1 and “DAC: xxxxx” is displayed on
line 2, where ‘xxxxx’ is an increasing or decreasing DAC count. Pressing [U] or [P] will increase or decrease
the DAC count in the fast mode. Repeated pressing of [U] or [P] in the slow mode will increase or decrease
the DAC count in increments. To change to from fast action to slow action, press the [F] key - repeated key
presses will toggle from fast to slow to fast etc. To accept the DAC value for the selected output current, press
[ENTER]. When all outputs have been calibrated, press [D] (done) - the final DAC count values will be
displayed and a Reset command will be invoked.
Note: ADJUSTMENT of the HEATER will affect the CALIBRATION. Notify FCI Customer Service
for assistance. It is necessary to use precision instruments to perform this calibration.
Pressing [Q] [ENTER] at any time will exit this menu item and display "Input mode?<.
COMMAND:
M. Min/Max A/D Limits
Summary:
Permits minimum and maximum limits to be imposed on the A/D output data when calculating flow rate. A
passcode must be entered.
Description:
Depending on the raw A/D input, there may be instances when the linearization of the data produces what is
known as a ‘fishhook’ at either end of the flow rate spectrum. This effect may make the displayed flow to appear
increasing or decreasing opposite to the actual flow rate. The correct selection of constraint values will eliminate
the undesired effect.
Example:
Pressing [M] [ENTER] will display “Enter Code #”
Press in the passcode. Press [Enter] “Max A/D: xxxx” and “Change it ?<” will be displayed. If [Y]
[ENTER] is pressed, “Enter Max A/D #” will be displayed. Entering new the maximum A/D calibrated will
remove the high end ‘fishhook’. After the value is entered or [N] [ENTER] is pressed, “Min A/D: xxxx” and
“Change it ?<” will be displayed. If [Y] [ENTER] is pressed, “Enter Min A/D #” will be displayed.
Entering the new minimum A/D number calibrated will remove the low end ‘fishhook’.
Note: Pressing Q [ENTER] at any time will exit this menu item and display "Input mode?<".
COMMAND:
N. Software Reset
Summary:
Permits the instrument to be initialized without removing power.
Description:
Sometimes it becomes necessary to initialize the instrument. (i.e. when entering new constants, troubleshooting, or
when power interruption is not practical.)
Example:
Pressing [N] [ENTER] will display "Restart - Wait!" followed by the initialization display: "FCI ST98",
"Initialization!", "Heater ON!", "Version x.xx" and "Scale = 1.00000".
Finally, "Input mode<", is displayed.