eFlo 2.0 Electronic Flow Meter Operations Manual
Super Systems Inc.
Page 6 of 39
Safety Information
Observe the following safety requirements when configuring, operating, servicing, or
maintaining the eFlo instrumentation. If the device is used in a manner not specified in this
manual, protection provided by the equipment may be impaired.
WARNING!
The eFlo instrument is NOT guaranteed to provide gas shutoff, nor is it designed to do so. For
reliable gas shutoff, incorporate a valve that provides positive gas shutoff. Ensure that all gas
flow equipment is in compliance with National Fire Protection Agency (NFPA) requirements,
including those found in NFPA 86. Failure to follow these requirements could result in
flammable gas leaks into the unit.
Ensure that the air and gas mixture ratio settings are within the specifications provided in this
manual. Exceeding specified values could result in hazardous conditions.
Specifications
The specifications for the eFlo instrument are as follows.
Weight
10.4 lbs (4.76kg)
Power Required
24 VDC@ 750 mA
Enclosure Rating
IP10
Accuracy
4%
Repeatability
2%
Turndown Ratio
6:1
Medium Temperature Limits
-10°F to 125°F (-20°C to 51°C)
Ambient Temperature Limits
-10°F to 125°F (-20°C to 51°C)
Maximum Altitude
N/A
Flow Output Signal (Linear)
4-20 mA
Maximum Output Signal Load
500
Ω
Input Control Signal (Linear)
4-20 mA
Communications
RS485, Ethernet, USB
Communication Protocol
Modbus RTU
Flow Meter Pressure Limits
The installed sensors will be determined by SSI
based on pressure specifications & turndown
requirements.
See the Calibration Report included with your
product for more details.
2 psig sensors:
2 psig usable limit
4 psig overpressure limit
5 psig sensors:
5 psig usable limit
10 psig overpressure limit
Table 1 - eFlo Specifications