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2021.08.19 • REV. 1 • MASS FLOW METER OPERATING MANUAL
11
Option: Color TFT Display
Instruments ordered with a color display are functionally the same as standard backlit
monochrome instruments. The color enables additional on-screen information.
Multi-Color Display Indicators
• GREEN : Parameter labels and adjustments associated with the button directly above or
below the label are presented in green.
• WHITE : The color of each parameter will be displayed in white when the device is
operating within device specifications.
• RED : The color of a parameter will be displayed in red when its value exceeds 128% of
the device’s specifications.
• YELLOW : Menu items that are ready to be selected appear in yellow. This color replaces
the
>
symbol in selections on monochrome display.
✓
Note: Press the logo to turn off the color display backlight. The flow meter remains in
operation while the backlight is off.
✓
Note: Color displays will require an additional 40 mA when using a 12 Vdc power supply.
All other device specifications from your device’s specification sheet remain in effect.
Option: Collecting Totalized Flow Data
MAIN DISPLAY → NEXT (totalizer menu)
The optional flow totalizer displays the total amount of mass or volume that has flowed
through the instrument since its last reset, similar to a gasoline pump.
•
TOTAL/TIMER
toggles between totalized flow and elapsed time as the highlighted
parameter in the center.
•
SLPM
(or another measurement of mass flow) displays the live flow rate. Press to change
engineering units.
•
(Optional) M AVG
or
V AVG
: Shows totalizer averaging, which displays average flow rate
since last reset, updated live.
•
SL
(in this example): Alternating display of selected engineering units for flow or time
( page 15 ) and the selected gas ( page 13 ).
•
RESET
clears all totalized data and immediately resets the timer to 0.
•
MENU
enters the main menu .
Totalizer Rollover Functions
The totalizer will report a maximum of 7 digits. By default, the placement of the decimal is
the same as the live flow rate. The totalizer can be configured at the time of order for the
following behaviors:
• Rollover (Default): Totalizer resumes counting from zero as soon as the maximum count
has been reached.
• Freeze: Totalizer stops counting at max count, until it is reset manually.
• Error (Default): Displays
OVR
status message when maximum count has been reached;
compatible with the rollover and freeze functions.
The elapsed time counter has a maximum value of 9999:59:59 (h:m:s) (416 days, 16 hours). If
flow is still being totalized at that point, the timer freezes, regardless of the behavior chosen
above for the totalized flow readings.
A typical TFT display.
The totalizer displaying a mass
flow average.