Installation Manual
Electromagnetic Flowmeters
Models HMS3700 & HMS3770 Insertion Sensors
Installation www.lcmeter.com
Table of Contents
Description Page Number
Introduction .................................................................................. 2-3
General ........................................................................... 3
Applications ..................................................................... 3
Basic Components .......................................................... 3
Safety Legend ................................................................. 3
Unpacking ....................................................................... 3
Transportation and Handling ........................................... 3
Start up and Maintenance ............................................... 3
Installation .................................................................................... 4-7
Operating Temperature Range ....................................... 4
Dimensions ..................................................................... 4
Sensor Installation Guidelines ........................................ 5
Grounding Instructions .................................................... 5
Model 3770 (installation in non-pressurized systems. .... 6
Model 3700 (installation in pressurized systems) ........... 7
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! WARNING
Before using this product, read and understand the instructions.
Save these instructions for future reference.
All work must be performed by qualified personnel trained in the proper application, installation, and mainte-
nance of equipment and/or systems in accordance with all applicable codes and ordinances.
Failure to follow the instructions set forth in this publication could result in property damage, personal injury,
or death from fire and/or explosion, or other hazards that may be associated with this type of equipment.
Introduction
This manual is an integral part of the product. Carefully read and understand all the instructions contained in this
publication since it contains important information regarding safety, operation, and maintenance of the instrument.
The product and technical information contained in this manual may be changed without notice.
This flow meter must be used only in the applications for which it has been designed. The improper use, tampering
with the instrument, or substitutions of any components immediately voids the product warranty.
The manufacturer is considered responsible only if the instrument is used in its original configuration.
Reproduction of this manual or of software supplied with this instrument is expressly forbidden.
2
Introduction
General Unpacking
This manual contains information concerning the appli- Always inspect the instrument for damage from shipping
cation, installation, and operation of the HMS3700 and upon receipt. File a damage claim with the carrier if dam-
HMS3770 insertion flow meters. Keep a copy of this age is discovered.
manual with the flow meter for future reference.
Transportation and Handling
Applications Do not lift the instrument from the carton by the con-
LCMag electromagnetic flow meters are designed for liq- verter head. Use lifting eyes where provided for larger
uid flow measurement in most industries including water meters, or lift by the sensor body.
& waste water, food & beverage, pharmaceutical, chemi-
cal, and more. These meters are not suitable for mea- When transporting, never use forks of a forklift, chains,
surement of petroleum products, and other liquid media wire slings, or any other object in the flow tube of the
with low electrical conductivity. Minimum electrical con- meter. Serious damage to the instrument will result.
ductivity of measured liquids is 5S.
Start up and Maintenance
Basic Components Before starting up the instrument, always make sure
An LCMag electromagnetic flow meter system consists that there is a suitable connection to ground as de-
of two basic components: the flow meter, and the con- scribed on Page 5 of this manual.
verter. The flow meter is the tube which inserts through
the wall of the pipe and into the liquid flow for measure- Periodically verify the following: the integrity of the
ment. The converter is the electronic control that pro- power supply cables, the proper tightening of the
vides power to the flowmeter and provides signal pro- sealing elements (cable glands, covers, etc.), the me-
cessing, flow calculation, and display outputs for the user. chanical attachment of the instrument to the pipe or
to the wall stand.
The wetted parts of the flow meter (liner and electrodes)
must be selected for compatibility with the liquid being
measured.
The converter must be selected for compatibility with the
environment in which it will operate.
Safety Legend
Before using the instrument, always establish a reliable electrical connection to ground.
Avoid any attempt to repair the instrument. If the instrument is not functioning properly, please call
the nearest authorized representative.
Pay maximum attention during operation.
Caution.
Danger.
3
Installation
Flow Direction
Before installing the sensor, confirm the direction of the
liquid flow in the piping. The sign of the flow rate is posi-
tive when the flow direction is from - to + as printed on
the nameplate on the sensor body.
If flow direction is reversed after the installation, it is suf-
ficient to reverse the sign of the KA coefficient in the
converter (refer to converter installation manual).
Operating Temperature Range
PTFE Wetted Parts
Liquid Temp. Ambient Temp.
Min. Max. Min. Max.
F -4 302 14 140
C -20 150 -10 60
Dimensions
HMS3700 HMS3770
Size Nominal Pipe Diameter L Size Nominal Pipe Diameter L
1 3" to 20" 19" 1 3" to 20" 7"
2 3" to 40" 24.5" 2 3" to 40" 9.5"
3 3" to 80" 34.5" 3 3" to 80" 18"
4
Installation
Sensor Installation Guidelines
NO YES
For vertical installations For vertical installations,
with descending flow use ascending flow
direction contact the conditions only.
manufacturer.
During normal operation
Avoid operation of the of the instrument, the
system with the pipe pipe must be completely
partially empty. full of liquid, or com-
pletely empty.
Avoid installation of this Install the sensor away
instrument near bends from bends in the pipe
in the piping or accesso- and accessories such
ries such as valves. as valves.
If the system is under
pressure, opening the
ball valve before tight-
ening the fixing nut Lock the center bushing
could result in the before opening the ball
sensor being propelled valve.
from the pipe line.
Never open the ball
valve unless the fixing
nut is properly tight-
ened.
Grounding Instructions
For correct operation of the meter, it is essential that the
sensor and the liquid be at the same electrical potential.
Always connect the sensor and the converter to ground.
For grounding with a cathode protection pipe, contact
the manufacturer.
5
Installation
Model 3770 (installation in a non-pressurized system)
Step 1 Step 4
Cut the jacket (1"
diameter) to the proper
length Z.
Z = L - S - 1/8 D - 1.26"
NOTE: Refer to Step 6
for L dimension.
Tighten the lock nut with
a wrench.
Step 5
Line up the connector
Step 2 box longitudinally with
pipe line axis.
Tighten the lock nut with
wrench, maintaining the
alignment. Ensure that
the lock nut is tight
enough to create a
proper seal with the
gasket.
Recommended dimen-
sion of 1" thread.
Weld the jacket to the
pipe line. Step 6
Sensor installed
Size Nominal Diameter Range L
Step 3 Size 1 3" up to 20" 7"
Size 2 3" up to 40" 9.5"
Size 3 3" up to 80" 18"
Place the gasket on the
sensor.
Place the sensor in the
jacket.
6
Installation
Model 3700 (installation in pressurized systems)
Step 1 Step 5
Weld a 1" pipe to the
pipeline.
NOTE: Verify X
dimension (Step 2).
Step 2
Open the valve.
XMAX = 5.5"
Screw the sensor up to
the Z dimension.
Verify the alignment.
Tighten the block nut
maintaining alignment.
Step 3
Screw the 1" jacket to Step 6
the valve.
Size Nominal Diameter Range L
NOTE: The O-Ring in Size 1 3" up to 20" 19"
the jacket must be
Size 2 3" up to 40" 24.5"
placed underside (near
Size 3 3" up to 80" 34.5"
valve).
Length Z = L - S - 1/8 D
Step 4
Insert the sensor with
valve closed.
Tighten the lock nut with
wrench.
7
A Unit of IDEX Corporation
105 Albrecht Drive
Lake Bluff, IL 60044-2242
1.800.458.5262 847.295.1050 2005 Liquid Controls
Fax: 847.295.1057 Pub. No. 500339
www.lcmeter.com (3/31/05)
