Super Systems eFLO - Manual (Page 14)

eFlo Electronic Flow Meter Operations Manual
Super Systems Inc. Page 14 of 25
Flow Rate Totalizer
The eFlo meter’s flow rate totalizer records cumulative flow rates measured by the meter. The
totalizer is active at all times. The maximum totalized value is 999,999,999,999 (the unit of
measurement is any unit of flow measurement). To show the totalized value, press and hold the
Totalizer button. The totalized value will begin scrolling across the LED screen if the value is
greater than what the screen can display.
To reset the totalizer to zero, press and hold the Reset button for five seconds.
Setup
The Setup button will open the Setup menu when the button is held for five seconds. The options
are displayed on the LED screen. Scroll through the options by pressing the Auto/Manual
button. Change the values by pressing the Up and Down buttons.
The available options are as follows.
GAIN: Gain is used to control the speed of valve response for automatic control. The higher the
value, the more quickly the valve will open and close. The lower the value, the more slowly it
opens and closes. The range for this value is 10 to 500.
DEAD (Deadband): Deadband is used to determine the area above and below the setpoint where
no control action will occur. If the deadband is too small, the control may oscillate around
setpoint. If the deadband is too high, the flow will not reach setpoint. The range for this value is
1 to the full scale flow value.
ADDR (Address): The Address is the RS485 Modbus address of the eFlo unit. The range for this
value is 1 to 249.
ZERO: The Zero value is the adjusted mA input from the pressure transducer. This value allows
the user to adjust the pressure transducer, which transmits a 4-20mA signal to indicate flow.
When no flow is present, the ideal value for the Zero value is 4.00mA (although the value will not
always be exactly 4.00). To change the Zero value, use the Up and Down buttons. To reset the
Zero value and remove any previous adjustments, press the Up and Down buttons
simultaneously. For more information, refer to the Zero Calibration section on page 15.
BAUD: The Baud is the serial baud rate. This value can be 9600 or 19200 (1920 represents
19200).
Maintenance
SSi recommends the following maintenance guidelines for the eFlo meter.
Clean any carbon or water from pressure transducer gas lines as needed. To do this:
1. Remove the rubber tubing from one side of the pressure transducer located in the
electronics enclosure. (Note that the two tubes plumbed to the pressure transducer
must not be switched; otherwise, the meter will not read properly.) The other end of the
tubing should be connected to the stainless steel tubing plumbed vertically along the
right side of the meter.
2. Apply air to the tubing to “flush” out any carbon and/or moisture, which may have
developed. Do not apply pressure to the pressure transducer.
3. Reassemble the tubing to the pressure transducer port and repeat the procedure for the
other side of the pressure transducer.