ONICON FB-3500 Series - Manual (Page 5)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
FB-3500 Bi-Directional Insertion Electromagnetic Flow Meter Manual 05/14 - 0718-3
Page 5
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This guide is the basic reference tool for all ONICON FB-3500 Bi-Directional Electromagnetic
Flow Meters. If you have not purchased all of the options, there will be references in this manual
which are not applicable to your meter(s).
1.2 TYPICAL INSERTION ELECTROMAGNETIC FLOW METER
Faraday’s Law of electromagnetic induction states that a voltage will be induced in a conductor
when it passes through a magnetic field, and the induced voltage will be directly proportional to
the velocity of the conductor.
ONICON FB-3500 Bi-Directional Electromagnetic Flow Meters generate pulsating magnetic fields
that are used to induce a voltage into the conductive fluid flowing through the pipe. Electrodes
located on the flow meter sensor head measure the induced voltage. Circuitry within the flow
meter electronics enclosure then converts the voltage to digital and analog signals that convey
flow rate and total data via connecting the cable to any of ONICON’s display devices, Btu meters
and/or to a data acquisition system.
Typical Meter Installation
(New construction or scheduled shutdown)
½" FNPT
conduit connection
Insertion depth
gage provided
with each meter
FLOW
Customer provided
conduit and adapters
Output signal(s)
to control
system
ONICON
Display or
BTU Meter
(Optional)
Allow enough slack
in the flexible conduit
to permit the meter
to be removed
from the valve.
Typically
30" - 40"
depending on
pipe size and
height of valve
assembly.
CLEARANCE
REQUIRED
FOR INSTALLATION
Standard Installation
Kit for Steel Pipe
1" Full port ball valve
1" Close nipple
1" Branch outlet
1¼" for
hot tap
Minimum Hole Size = 1"
Must be centered
Note: Installation kits vary based on pipe material and application. For installations in pressurized (live)
systems, use "Hot tap" 1¼ inch installation kit and drill hole using a 1 inch wet tap drill.
• Install in vertical or horizontal pipe
• For horizontal pipe position meter
anywhere in upper 240˚
SECTION 1.0: INTRODUCTION
We, at ONICON Incorporated, would like to thank you for purchasing our quality American made
FB-3500 Bi-Directional Electromagnetic Flow Meter. As our valued customer, our commitment to you
is to provide fast reliable service, while continuing to offer you quality products to meet your growing
flow measurement needs.
1.1 PURPOSE OF THIS GUIDE
We have written this guide to provide the persons responsible for the installation, operation and
maintenance of your flow meter with the most specific equipment information they will need.
This is NOT an electrical or plumbing trade manual.
WARNING
Please do not permit persons to install, operate or maintain this equipment unless they have a
complete knowledge of their trade skills and are competent to work on high pressure hot and cold
water and steam systems, according to their individual trades. Death or permanent injury may
result from accidents with these systems.