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SECTION 1.0: INTRODUCTION
We, at GREYLINE Instruments, would like to thank you for purchasing our quality American made
ISM 5.0 Insertion Magmeter. 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.
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.
This guide is the basic reference tool for all GREYLINE ISM 5.0 Insertion Magmeters. If you have
not purchased all of the options, there will be references in this manual which are not applicable
to your meter(s).
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.
GREYLINE ISM 5.0 Insertion Magmeters 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 GREYLINE’s display devices, Btu meters and/or to a data
acquisition system.
Typical Meter Installation
(New construction or scheduled shutdown)
Customer provided
conduit and adapters
• Install in vertical or horizontal pipe
• For horizontal pipe position meter
anywhere in upper 240˚
Output signal(s)
to control
system
½" FNPT
conduit connection
Allow enough slack
in the flexible liquid-
tight conduit to
permit the meter to
be removed
from the valve.
Insertion depth
gage provided
with each meter
Standard Installation
Kit for Steel Pipe
1" Full port ball valve
1" Close nipple
1" Branch outlet
CLEARANCE
REQUIRED
FOR INSTALLATION
Typically
30" - 40"
depending on
pipe size and
height of valve
assembly.
1¼" for
hot tap
Minimum Hole Size = 1"
Must be centered
FLOW
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.
1.2 TYPICAL INSERTION ELECTROMAGNETIC FLOW METER
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.
!
1.1 PURPOSE OF THIS GUIDE
Greyline
Display or
BTU Meter
(Optional)
