FLUID COMPONENTS INTL
CHAPTER 3 - OPERATION
Model ST98 Flow Meter
3 - 14
Doc. No. 06EN003291 Rev. A
Example:
Pressing W [ENTER] will display “Totalizer is <“ on the first line. “ON, turn OFF ?” or “OFF, turn ON ?”
is displayed on the second line (depending on the initial state). Pressing a [Y] [Enter] will change the
totalizer state. Whether the state is changed or a [N] [ENTER] or [ENTER] is pressed, “reset Totalizer” and
“at this time ?” are displayed. Pressing [Y] [ENTER] will zero the totalizer. Pressing [N] [ENTER] or
[ENTER] gives no change. Next displayed is “reset Totalizer” and “during Powerup?”. Pressing
[Y] [ENTER] sets a flag where pressing [N] [ENTER or [ENTER] displays “Temp display is” followed by
“ON, turn OFF ?” or “OFF, turn ON?" (depending on the initial state). Pressing [Y] [ENTER] will change
states and display “Input mode ?<”.
Note:
Totalizer data is saved in the EEPROM approximately every 15 minutes.
COMMAND:
X. NAMUR Output Fault Indicator
Summary:
Permits the user to toggle the Fault Detection on and select the NAMUR Fault detection indicators. A password
must be entered.
Description:
Faults, i.e., heater short or open conditions, detected by the instrument will send an alarm to the host system by
one of two methods: If the output mode is “4-20 mA”, the user may indicate the fault by setting the output “alarm”
to 22.0 mA or 3.5 mA; if the output mode is “0-5 Volts” or “0-10 Volts”, the output “alarm” is pulsed from zero
(0) volts to one (1) volt about once every 7 seconds. (The voltage mode is not a NAMUR requirement.) The
NAMUR Fault Detection system is enabled by the NAMUR OFF/ON flag.
Example:
Pressing X [ENTER] will display “Enter Code #”. Enter the passcode. Press [Enter], “NAMUR flag is”
displayed on the first line and “ON, turn OFF?” or “OFF, turn ON?” is displayed on the second line
(depending on the initial state). Pressing [Y] [ENTER] will change the Fault flag state; Pressing [N]
[ENTER] or [ENTER], creates no change. If the output mode is “4-20 mA”, and Alarm output of
“22 mA” or “3.5 mA” can be selected. If the output mode is “0-5 Volts” or “0-10 Volts”,
“VOUT: 0 Volts” is displayed followed by “Input mode?<”. Pressing [Q] [ENTER] at any time will exit this
menu and display “Input mode?<”.
COMMAND:
Y. Undefined.
COMMAND:
Z. Flow Units Select
Summary:
Permits user to select one of six flow units - three (3) English and three (3) Metric. Output is automatically scaled
by selecting new full scale and new zero.
Description:
Depending on the flow units desired, the user should select one of the following;
Velocity
Volume
Mass
English
SFPS
SCFM
LB/HR
Metric
SMPS
NCMH
KG/HR
The user can also scale the output based on the calculated maximum flow rate and the new full scale that is chosen.
The volume and mass flow units require specific line size dimensions. Typically, flow rate ranges are 100:1 but
can be adjusted to 10:1 by entering a new full scale and/or zero level. In this mode, the instrument will not accept
