eFlo 2.0 Electronic Flow Meter Operations Manual
Super Systems Inc.
Page 5 of 39
Introduction
The eFlo 2.0 instrument is Super Systems Inc.’s latest electronic flow meter. eFlo works by
measuring the differential pressure (the difference in pressure of a gas at two points) of a gas
flowing through a specially designed opening in the gas flow assembly. Based on properties of
the flowed gas, the differential pressure can then be used to calculate the flow rate of the gas.
eFlo 2.0 uses a mathematical curve to calculate the flow of a gas and features built-in
diagnostic information, flow rate and pressure alarms, and a flow rate totalizer. The automatic
meter can be set to automatic or manual valve control mode. Automatic valve control mode
allows the eFlo to use a flow rate or valve position setpoint as a basis for adjusting the valve
(and thus the gas flow) using a built-in valve motor. The setpoint can be programmed manually
by the user or obtained by the instrument from a 4-20 mA analog signal or a digital signal over
RS485. Manual valve control mode allows the user to manually set the valve position through
the interface.
eFlo 2.0 is built for use in harsh industrial environments.
This manual also covers configuration and control using the eFlo web interface.
Model Numbers
eFlo2.0 model numbers provide details about your eFlo device’s interface type, valve type, and
gas type. This is useful information to have available when contacting SSi for technical support.
Interface Type
Valve Type
KP= Keypad Interface
A=Automatic Valve
TS=Touchscreen Interface
M=Manual Valve
Gas Type
AIR – Air
H2 - Hydrogen
ARG – Argon
MULT - Multiple Gasses
C3H8 – Propane
N2 - Nitrogen
CH4 – Methane
N2O - Nitrous Oxide
CO2 - Carbon Dioxide
NAT - Natural Gas
CRS - Coarse (AutoGen Special)
NH3 - Ammonia
DA - Disassociated Ammonia
PROY - Propylene Gas (C3H6)
ENDO - Endothermic Gas
TRM - Trim (AutoGen Special)
Example:
141.KP.M.ENDO
Indicates eFlo 2.0
Keypad Interface
Manual Valve
Endothermic Gas