FLUID COMPONENTS INTL
CHAPTER 3 - OPERATION
Model ST98 Flow Meter
3 - 4
Doc. No. 06EN003291 Rev. A
Detailed Menu Description
This section describes the menu of commands. The commands are listed in alphabetical order with no order of
priority.
Note:
Menu Commands are initiated by pressing the appropriate character key followed by the ENTER key.
COMMAND:
A. Analog Input
Summary:
Permits the user to display the Analog To Digital (A/D number) of the eight analog input channels. The A/D
number has a span of 0-4096 counts which is proportional to 0-4 V at the input to the A/D converter. Channels 0
through 3 receive a signal voltage that has been amplified by a factor of nine. Channels 4 through 7 are not
amplified.
These numbers can help a technician determine the cause of a problem with the installation or operation of the
flowmeter. FCI recommends making a note of these readings.
Description:
When command [A] [ENTER] is pressed, the instrument will respond by displaying the signal for Channel 0.
Continually pressing the [ENTER] key displays the rest of the channels and will rotate back to channel 0 following
the Channel 7 selection. This command is useful in trouble shooting incorrectly wired instruments and open flow
elements. This is a view only selection, the user has no other input commands.
Channel
Signal Name
Number
Example:
Pressing [A] [Enter] displays “Ch(0): xxxx”
[Enter] displays “Ch(1): xxxx”
[Enter] displays “Ch(2): xxxx”
[Enter] displays “Ch(3): xxxx”
[Enter] displays “Ch(4): xxxx”
[Enter] displays “Ch(5): xxxx”
[Enter] displays “Ch(6): xxxx”
[Enter] displays “Ch(7): xxxx”
[Enter] displays “Ch(0): xxxx”
Note:
Pressing [Q] [ENTER] at any time will exit this menu item and display “Input mode ?<”.
Purpose and Symptom
0
ACT_SEN - REF_SEN Raw Delta-R x Gain (»9)
Raw flow signal with a gain of 9, used for high flow rate.
1
-8 Volt Supply Monitor
Check for -8 Volt Supply limits.
2
Sensed mA Output Load Monitor
Used in calculating the output load in ohms.
3
+20 Volt Supply Monitor
Check for +20 Volt Supply limits.
4
ACT_SEN - REF_SEN Raw Delta-R
Raw flow signal with gain of 1, used for lower flow rate.
5
HTR_SEN - GND Sensed Heater Voltage
Check the condition of the heater.
6
Circuit Board Temperature Monitor
Check for Circuit Board Temperature limits.
7
REF_SEN - GND_SEN Sensed Ref-R
Used to measure the reference sensor for process temp.
