Flomec QSE Series User manual

920896-01 Rev T10/2018
QSE (Q-Star) Series Electromagnetic Meter
Owner’s Manual
NPT OR BSP METER
WITH 09 ELECTRONICS
3" POLYMER FLANGE METER WITH QB ELECTRONICS
NPT Meter
(1/2 in. to 2 in.)
Shown with Display Mount
Cover Plate and Display
BSPP Meter
(1/2 in. to 2 in.)
Shown with Display Mount
Cover Plate and Display
ANSI Flanged Meter
(3 in. & 4 in.)
Shown with Plain Cover Plate
and Pulse Out Transmitter (QSB)
INTRODUCTION
The QSE meter has multiple types
of output electronics available.
The electronics for the operation
of the meter coils and ow tube
are housed within the meter body
casing. The cover plate is designed
in two versions; a plain cover plate
or a display mount cover plate. The
output electronics (QSB, QSI1, QSI2
or QSI3) can be housed within either
of the two cover plates. A display
(Q09) is also available mounted to
the “display mount” cover plate. All
meters are equipped with galvanically
isolated pulse-out electronics
(QSB) as the default standard,
regardless of style of cover plate.
This manual contains overall
information related only to the meter.
This meter is externally powered
and all external wiring connects
to the electronics within the cover
plate through its threaded ports.
TABLE OF CONTENTS
INTRODUCTION..................................... 1
IMPORTANT NOTICE ....................... 2
PRINCIPLE OF OPERATION ............ 2
SAFETY ............................................ 2
INSTALLATION ....................................... 3
EARTH GROUND ............................. 3
Grounding Summary: ....................... 3
CONNECTIONS ............................... 6
RECOMMENDED INSTALLATION .... 8
WIRING ............................................ 9
MAINTENANCE...................................... 9
TROUBLESHOOTING .......................... 10
SPECIFICATIONS................................. 11
U.S. MEASUREMENT .................... 12
METRIC MEASUREMENT.............. 13
U.S. PRODUCT WEIGHT ............... 14
METRIC PRODUCT WEIGHT......... 14
DIMENSIONS ................................. 15
TEMPERATURES ........................... 16
FLUID ELECTRICAL CONDUCTIVITY.. 17
REPLACEMENT PARTS LIST............... 19
SERVICE............................................... 21
LIMITED WARRANTY........................... 24
BSPP METER WITH
09 ELECTRONICS

2
The magnetic coils, electrodes and
other electronic components within
the main meter body receive power
from the electronics housed within
the cover plate through a ribbon
cable. See the included electronics
manuals for meter wiring diagrams
specic to your meter electronics.
IMPORTANT NOTICE
Your QSE meter is supplied ready
for operation in a wide variety of
applications. The meter has been
factory congured to your order.
It is suitable for volumetric ow
measurement of non-ammable,
electrically conductive liquids that
have a minimum uid conductivity
of 10 µS/cm, and are compatible
with the wetted components of the
meter (See Specication Section).
Fluid conductivity below 50
µS/cm may result in uncertain
readings. Consult factory
for use with uids having a
conductivity below 50 µS/cm.
Use QSE series meters with water,
aqueous solutions and other non-
ammable, electrically conductive
uids. A uid conductivity chart of
common liquids is in the back of
this manual for your reference. Do
not use the meter with petroleum
products (diesel fuel, unleaded
gasoline, jet fuel, kerosene, etc.)
or incompatible chemicals.
QSE series meters are very sensitive
to electric noise if operated within
6 inches (152mm) of some electric
motors, relays, transformers or
other sources of electronic noise.
If the QSE series meters are used
in a manner not specied by the
manufacturer, the protection provided
by the equipment may be impaired.
PRINCIPLE OF OPERATION
Faraday’s Law of Electromagnetic
Induction is the operating principle
on which the QSE series meters are
based. Faraday’s Law (paraphrased)
states that a voltage will be induced
in a conductor when it passes
through a magnetic eld, and the
induced voltage will be directly
proportional to the velocity of the
conductor passing through that
magnetic eld. In this case, owing
liquid is the conductor and the
QSE meter creates the magnetic
eld. The velocity of the owing
liquid, which must pass through
the magnetic eld, is the velocity
of the conductor. A voltage is
induced in the conductive liquid
as it passes through the magnetic
eld. By placing electrodes in
calculated locations on the ow
tube of the meter, it is possible to
accurately measure the induced
voltage, thus determining the
corresponding velocity and
volumetric ow of the liquid.
SAFETY
• This product is not approved
for use with petroleum
products (diesel fuel, unleaded
gasoline, jet fuel, kerosene,
etc.), aromatic hydrocarbons,
ammable uids or other
incompatible chemicals
• This product is not approved
for use in hazardous locations.
• Be sure O-rings and seals
are kept in good repair.
• When applying power, adhere
to specications listed in
appropriate electronics manual.
• Disconnect external power
before attaching or detaching
input or output wires.

3
INSTALLATION
EARTH GROUND
When making installations, the
magnetic ow meter grounding rules
have to be observed. The sensors
of the QSE ow meter are sensitive
to any electrical noise that is always
present in piping systems. The uid
in piping systems usually carries
signicant levels of static electricity
and should be grounded for the QSE
meter to be at its best performance.
As part of the installation, it is
important to understand the
importance of having the QSE meter
connected to “earth ground”. Earth
grounding helps ensure electronic
component stability and reliability
by using the earth to absorb any
static charge buildup or spurious
signal noise that can affect the meter
electronics. Earth ground in this
installation is NOT the ground wire in
the customer isolated power supply.
Process Fluid Grounding
Establishing a process uid ground
is one of the most important
installation details. Proper process
uid grounding ensures that the
sensor and uid are at the same
electrical potential so that only the
induced ow signal is measured. The
process uid grounding provides
a stable base potential reference
for measuring the induced ow
signal (the differential between the
base potential reference and the
uid ow potential created by the
sensor magnetic eld). Process uid
grounding should be established
on both sides (upstream and
downstream) of the sensor elements.
By connecting the QSE sensor,
the uid, and the reference used
by the internal electronics to a
stable, noise free reference point
(earth ground), the user is ensured
of getting the best performance
from their magnetic owmeter.
Each QSE meter has a ground
lug with a removable ring terminal
located in the circular wall adjacent
to the outlet end of the meter. This
ground lug is connected internally
to the electronics and sensors and
is the meter connection to earth
ground (the base potential reference).
Grounding Summary:
1. Ground sensor to meter
ground lug. (Done at factory.)
2. Ground electronics to meter
ground lug. (Done at factory.)
3. Ground process uid to
meter ground lug. (Customer
responsibility.) Various process
uid grounding examples are
shown on the following pages
(see Figures 1,2, 3, and 4) to
assist you in completing this
item. The examples cover various
meter installation situations.
4. Ground meter ground lug to earth
ground. (Customer responsibility)
All of the examples on the following
pages show 14-16 AWG ground
wire (customer supplied) being
used. A ground wire should be
crimped to the ring terminal on the
meter ground lug and the other
end of the ground wire connected
to earth ground (item 4 above).

4
Figure 2
Figure 1
A
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
(3 PLACES)
EARTH GROUND
SIDE VIEW WITH CUT-AWAY
DETAIL A CUT-AWAY VIEW
(TYPICAL 2 PLACES)
SCREW (HAND TIGHT)
RING TERMINAL
GROUNDING PROBE
(APPLY THREAD TAPE
OR PIPE SEALANT
PRIOR TO INSTALL)
1/8 - 27 NPT
(TO BE TAPPED
INTO PORT CAVITY)
Ø.312 (5/16) HOLE
(TO BE DRILLED THRU
FLOOR OF PORT CAVITY)
14-16 AWG
GROUNDING WIRE
QSE GROUNDING - THREADED FITTINGS & ANSI FLANGE
ALL PROCESS PIPE MATERIALS
USING GPI GROUNDING PROBES (Kit P/N 145630-529)
QSE GROUNDING - THREADED FITTINGS
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE METAL COUPLINGS
QSE GROUNDING - ANSI FLANGE
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE GROUNDING RINGS
EARTH GROUND
14-16 AWG
GROUNDING WIRE
CONDUCTIVE PIPE COUPLING
(STEEL, IRON, BRASS,ALUMINUM, COPPER, ETC.)
(2 PLACES)
HOSE CLAMP
(2 PLACES)
QSE GROUNDING - ANSI FLANGE
CONDUCTIVE METAL PIPE
USING INTEGRATED CONTINUITY GROUND WIRE
METER FLANGE (TYP)
GASKET (TYP) GASKET (TYP)
GROUNDING RING (TYP)
(COMMERCIALLY AVAILABLE)
EARTH GROUND
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
14-16 AWG
GROUNDING WIRE
INSERT WIRE UNDER HOSE
CLAMP AND TIGHTEN CLAMP.
(2 PLACES)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
EARTH GROUND
GROUNDING SCREW (TYP)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
METER FLANGE (TYP) GASKET (TYP)
14-16 AWG
GROUNDING WIRE
14-16 AWG GROUNDING WIRE TO
MAINTAIN GROUNDING CONTINUITY
BETWEEN PIPE SEGMENTS.
PLASTIC PIPE & FLANGE (TYP)
METAL PIPE & FLANGE (TYP)
GROUNDING SCREW (TYP)
QSE GROUNDING LUG
QSE GROUNDING LUG
QSE GROUNDING
LUG
QSE GROUNDING LUG
A
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
(3 PLACES)
EARTH GROUND
SIDE VIEW WITH CUT-AWAY
DETAIL A CUT-AWAY VIEW
(TYPICAL 2 PLACES)
SCREW (HAND TIGHT)
RING TERMINAL
GROUNDING PROBE
(APPLY THREAD TAPE
OR PIPE SEALANT
PRIOR TO INSTALL)
1/8 - 27 NPT
(TO BE TAPPED
INTO PORT CAVITY)
Ø.312 (5/16) HOLE
(TO BE DRILLED THRU
FLOOR OF PORT CAVITY)
14-16 AWG
GROUNDING WIRE
QSE GROUNDING - THREADED FITTINGS & ANSI FLANGE
ALL PROCESS PIPE MATERIALS
USING GPI GROUNDING PROBES (Kit P/N 145630-529)
QSE GROUNDING - THREADED FITTINGS
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE METAL COUPLINGS
QSE GROUNDING - ANSI FLANGE
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE GROUNDING RINGS
EARTH GROUND
14-16 AWG
GROUNDING WIRE
CONDUCTIVE PIPE COUPLING
(STEEL, IRON, BRASS,ALUMINUM, COPPER, ETC.)
(2 PLACES)
HOSE CLAMP
(2 PLACES)
QSE GROUNDING - ANSI FLANGE
CONDUCTIVE METAL PIPE
USING INTEGRATED CONTINUITY GROUND WIRE
METER FLANGE (TYP)
GASKET (TYP) GASKET (TYP)
GROUNDING RING (TYP)
(COMMERCIALLY AVAILABLE)
EARTH GROUND
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
14-16 AWG
GROUNDING WIRE
INSERT WIRE UNDER HOSE
CLAMP AND TIGHTEN CLAMP.
(2 PLACES)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
EARTH GROUND
GROUNDING SCREW (TYP)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
METER FLANGE (TYP) GASKET (TYP)
14-16 AWG
GROUNDING WIRE
14-16 AWG GROUNDING WIRE TO
MAINTAIN GROUNDING CONTINUITY
BETWEEN PIPE SEGMENTS.
PLASTIC PIPE & FLANGE (TYP)
METAL PIPE & FLANGE (TYP)
GROUNDING SCREW (TYP)
QSE GROUNDING LUG
QSE GROUNDING LUG
QSE GROUNDING
LUG
QSE GROUNDING LUG

5
Figure 4
Figure 3
A
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
(3 PLACES)
EARTH GROUND
SIDE VIEW WITH CUT-AWAY
DETAIL A CUT-AWAY VIEW
(TYPICAL 2 PLACES)
SCREW (HAND TIGHT)
RING TERMINAL
GROUNDING PROBE
(APPLY THREAD TAPE
OR PIPE SEALANT
PRIOR TO INSTALL)
1/8 - 27 NPT
(TO BE TAPPED
INTO PORT CAVITY)
Ø.312 (5/16) HOLE
(TO BE DRILLED THRU
FLOOR OF PORT CAVITY)
14-16 AWG
GROUNDING WIRE
QSE GROUNDING - THREADED FITTINGS & ANSI FLANGE
ALL PROCESS PIPE MATERIALS
USING GPI GROUNDING PROBES (Kit P/N 145630-529)
QSE GROUNDING - THREADED FITTINGS
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE METAL COUPLINGS
QSE GROUNDING - ANSI FLANGE
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE GROUNDING RINGS
EARTH GROUND
14-16 AWG
GROUNDING WIRE
CONDUCTIVE PIPE COUPLING
(STEEL, IRON, BRASS,ALUMINUM, COPPER, ETC.)
(2 PLACES)
HOSE CLAMP
(2 PLACES)
QSE GROUNDING - ANSI FLANGE
CONDUCTIVE METAL PIPE
USING INTEGRATED CONTINUITY GROUND WIRE
METER FLANGE (TYP)
GASKET (TYP) GASKET (TYP)
GROUNDING RING (TYP)
(COMMERCIALLY AVAILABLE)
EARTH GROUND
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
14-16 AWG
GROUNDING WIRE
INSERT WIRE UNDER HOSE
CLAMP AND TIGHTEN CLAMP.
(2 PLACES)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
EARTH GROUND
GROUNDING SCREW (TYP)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
METER FLANGE (TYP) GASKET (TYP)
14-16 AWG
GROUNDING WIRE
14-16 AWG GROUNDING WIRE TO
MAINTAIN GROUNDING CONTINUITY
BETWEEN PIPE SEGMENTS.
PLASTIC PIPE & FLANGE (TYP)
METAL PIPE & FLANGE (TYP)
GROUNDING SCREW (TYP)
QSE GROUNDING LUG
QSE GROUNDING LUG
QSE GROUNDING
LUG
QSE GROUNDING LUG
A
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
(3 PLACES)
EARTH GROUND
SIDE VIEW WITH CUT-AWAY
DETAIL A CUT-AWAY VIEW
(TYPICAL 2 PLACES)
SCREW (HAND TIGHT)
RING TERMINAL
GROUNDING PROBE
(APPLY THREAD TAPE
OR PIPE SEALANT
PRIOR TO INSTALL)
1/8 - 27 NPT
(TO BE TAPPED
INTO PORT CAVITY)
Ø.312 (5/16) HOLE
(TO BE DRILLED THRU
FLOOR OF PORT CAVITY)
14-16 AWG
GROUNDING WIRE
QSE GROUNDING - THREADED FITTINGS & ANSI FLANGE
ALL PROCESS PIPE MATERIALS
USING GPI GROUNDING PROBES (Kit P/N 145630-529)
QSE GROUNDING - THREADED FITTINGS
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE METAL COUPLINGS
QSE GROUNDING - ANSI FLANGE
NON-CONDUCTIVE (PLASTIC) PIPE
USING COMMERCIALLY AVAILABLE GROUNDING RINGS
EARTH GROUND
14-16 AWG
GROUNDING WIRE
CONDUCTIVE PIPE COUPLING
(STEEL, IRON, BRASS,ALUMINUM, COPPER, ETC.)
(2 PLACES)
HOSE CLAMP
(2 PLACES)
QSE GROUNDING - ANSI FLANGE
CONDUCTIVE METAL PIPE
USING INTEGRATED CONTINUITY GROUND WIRE
METER FLANGE (TYP)
GASKET (TYP) GASKET (TYP)
GROUNDING RING (TYP)
(COMMERCIALLY AVAILABLE)
EARTH GROUND
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
14-16 AWG
GROUNDING WIRE
INSERT WIRE UNDER HOSE
CLAMP AND TIGHTEN CLAMP.
(2 PLACES)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
EARTH GROUND
GROUNDING SCREW (TYP)
CONNECT WIRE TO RING TERMINAL.
TIGHTEN RING TERMINAL WITH SCREW.
METER FLANGE (TYP) GASKET (TYP)
14-16 AWG
GROUNDING WIRE
14-16 AWG GROUNDING WIRE TO
MAINTAIN GROUNDING CONTINUITY
BETWEEN PIPE SEGMENTS.
PLASTIC PIPE & FLANGE (TYP)
METAL PIPE & FLANGE (TYP)
GROUNDING SCREW (TYP)
QSE GROUNDING LUG
QSE GROUNDING LUG
QSE GROUNDING
LUG
QSE GROUNDING LUG

6
TYPICAL INSTALLATION
CONNECTIONS
Install your meter in-line with either
horizontal ow or vertical ow. The
best meter position for horizontal
ow setups is with the meter rotated
slightly (about 1 o’clock or 2 o’clock)
to tilt the top from the horizontal
plane (see Figure 5). This prevents
sediment from settling on the lower
set of sensing electrodes. Install the
meter with the ow arrow pointing
in the direction of uid ow.
5 x DIA.
3 x DIA.
5 x DIA. 3 x DIA.
FLOW DIRECTION
FLOW DIRECTION
20˚
Electrode
Locations
5 x DIA.
3 x DIA.
5 x DIA. 3 x DIA.
FLOW DIRECTION
FLOW DIRECTION
Figure 5
Meter shown tilted 20 degrees
in horizontal position
Plan to install meter with minimum
straight pipe lengths at inlet and
outlet ends. The straight run
lengths noted below represent
the minimum requirements for
accurate ow measurement
(see Figure 5). For optimum
performance, provide as much
additional straight run as possible.
• Upstream from the meter, allow
a minimum straight pipe length
of (5) times the pipe diameter
from bends and obstructions.
• Downstream from the
turbine, allow a minimum
straight pipe length of (3)
times the pipe diameter from
bends and obstructions.
• Avoid downward ow that can
lead to partially lled pipes.

7
For NPT Fittings:
Seal all pipe threads with an
appropriate non-lubricated thread
sealant (such as Loctite®No
More Leaks™ Plastic Pipe Thread
Sealant or NSF equivalent for NSF
applications). Make sure the thread
sealant does not intrude into the
ow path. Hand tighten the meter
at the housing ends. Do not use
a wrench or similar tool to tighten
as this can damage the housing.
NOTE: If connecting to new
female pipe threads, burrs
and curls can adversely affect
accuracy. Correct the problem
prior to meter installation.
For BSPP Fittings:
The BSPP meter includes a plastic
bag containing (2) O-rings and (2)
backup rings that must be installed
onto the meter. They are used
for sealing the tting ends of the
meter to process piping. Before
installing the meter, install an
O-ring in the O-ring gland on each
housing end, then t a backup ring
over each O-ring (see Figure 6).
The BSPP meter is now ready for
installation. Hand tighten the meter
at the housing ends. DO NOT use
a wrench or similar tool to tighten
as this can damage the housing.
1. Install O-ring 2. Install backup
ring
Installed
Flush to center O-ring
with housing
cut-away view
Figure 6
For ANSI and DIN Flange Fittings:
The anges supplied with your
meter allow the meter to be
oriented regardless of the mating
anges position. The meter
anges and their steel half-ring
“keys” must be installed onto the
meter by the customer before
meter installation (see Figure 7).
LOBE
RECESS
(TOP & BOTTOM)
FLANGE INSTALLATION
(POLYMER FLANGE SHOWN)
CUT-AWAY
Figure 7
• Installing anges on meter: With
the mating face of the ange
facing outboard, slide ange over
one end of the meter. Position (2)
half-rings in the retaining groove

8
and snap into place. Each end
of a half-ring has a small lobe
that snaps into a recess at the
top and bottom of the groove for
retention. Repeat at other end.
Customer to provide:
• Ring Gaskets or Full-Face
Gaskets approved for use with
type ange installed (ANSI
or DIN) and the uid being
monitored (2 required).
• 5/8 in. bolts and nuts for
ANSI anges. Four per side
for 3-inch meters; eight per
side for 4-inch meters.
• 16mm bolts and nuts for DIN
anges. Four per side for 3”
meters (DN80/PN10 anges);
Eight per side for 4” meters
(DN100/PN10 anges).
• Torque bolts using a star
pattern to 25 ft-lbs (33.9 N•m).
For best results, always verify
torque accuracy before use.
NOTE: Do not over tighten the
ange bolts. This may cause the
gasket to be compressed into the
ow stream and may decrease
the accuracy of the meter.
When properly installed, the ow
meter will only measure ow in that
portion of the piping system where
the meter is installed. Choose the
location with the longest straight
unobstructed run of pipe, keeping
in mind that in some applications it
may be possible to locate the meter
in either the supply or return pipe.
NOTE: Your meter may have two
1/8 in. NPT pipe plugs installed on
top of the ow tube near each end.
They have been installed and sealed
at the factory and are for use only
with optional temperature sensing
probes for energy use calculations
in specialized applications.
RECOMMENDED INSTALLATION
WARNING: Compatibility of
this product’s material and the
process uid and/or environment
should be considered prior
to putting into service.
WARNING: Product should
never be operated outside its
published specications for
temperature or pressure. See
specications for your model.
WARNING: Make sure ow and
pressure have been eliminated
from process pipe prior to
installing or removing product.
WARNING: When connecting
product to process piping: For
NPT ttings use non-lubricated
thread sealant (such as Loctite®
No More Leaks™ Plastic Pipe
Thread Sealant or NSF equivalent
for NSF applications). For BSPP
ttings use O-ring seals. For ange
ttings use ange gaskets.
CAUTION: Installation near
high electromagnetic elds
and high current elds is not
recommended and may result
in inaccurate readings.
CAUTION: Do not allow water
to freeze in meter. Ice expansion
may burst the plastic housing.
CAUTION: Do not allow this
meter to be used with steam.
CAUTION: Using metal ttings on
the plastic threaded pipe ends of
the meter is not recommended.

9
WIRING
All electronic options are associated
with a matching style of meter
cover plate. This cover plate has
four threaded ports, compatible
with PG7 threads, for gaining wiring
access to the electronics inside the
cover plate. The meter is shipped
with the ports environmentally
sealed with a threaded plug and
seal. Remove one or more of
these plugs as required to install
the supplied port ttings below.
Each meter is supplied with cable
gland strain reliefs with O-rings and
1/2 NPT adapters with seals for use
in the threaded ports of the meter
cover plate. Select the port ttings
that t your process and replace
the threaded plugs in the cover
plate with the ttings as required.
The threaded plugs installed at the
factory may be left in any unused
cover plate port indenitely.
It is recommended that a
“removable” thread-locker (uid,
stick, tape, spray, etc.) be used
when installing the strain reliefs or
adapters into the cover plate ports.
Strain Reliefs:
The cable gland strain reliefs will
accommodate a cable diameter of
0.11 - 0.26 inches (2.79 - 6.6mm)
and provide an environmental
seal around the cable when
the dome-nut is tightened.
NPT Adapters:
The 1/2 NPT adapter ttings
are used for attaching ex
conduit to the meter, for those
applications that require cable
runs to be enclosed in conduit.
• Cable to be provided by
customer to accommodate
job requirements. Cable is
not included with meter.
• This meter is externally
powered. The magnetic coils,
electrodes and other electronic
components within the main
meter body receive power from
the electronics housed within the
cover plate. All external wiring
connects to the cover plate
through threaded ports. See the
included electronics manuals for
meter wiring diagrams specic
to this meters electronics.
MAINTENANCE
The meter is virtually maintenance-
free. However, it is important
to keep the meter clean and
free of contaminants.
CAUTION: Do not allow liquids
to dry inside the meter. The
electrodes may develop a lm
that degrades accuracy.
Remove internal debris or deposits
using soft brush or small probe.
NOTE: Make sure the arrow on the
meter is pointed in the direction
of uid ow (see Figure 2).

10
TROUBLESHOOTING
MEASUREMENT IS NOT ACCURATE
PROBABLE CAUSE SOLUTION
Debris/particles in liquid Need proper ltration
Air in liquid - No back pressure Increase back pressure on
meter to eliminate air
Air in liquid - Plumbing installation
Install meter away from other ttings
or ow obstructions. Do not allow
meter to discharge to atmosphere.
Air in liquid - Pump cavitation Install meter away from pump
Pipe not full - No back pressure Increase back pressure on
meter to eliminate air.
Pipe not full - Plumbing installation
Install meter where pipe is always
full of liquid. Do not allow meter
to discharge to atmosphere.
Conductivity of uid too low Consult liquid properties
Operating outside meter limits
Increase/decrease ow rate
to proper meter specication.
Review temperature limits.
Electrical noise Install meter away from
devices that emit EMF.
Ground loop Meter may need to be
earth grounded
Electrodes not clean Clean electrode tips
Interface device not
properly calibrated
Consult device instructions
and specications.
NORMAL FLOW BUT METER DOES NOT WORK
PROBABLE CAUSE SOLUTION
Wiring not correct Consult wiring diagrams.
Review installation.
Operating outside meter limits Review voltage requirements
Meter installed backwards
Check to see if the direction
of the arrows on the meter
match ow direction.

11
Design Type: Electromagnetic
INLET AND OUTLET
NPT MODELS
QSE05NPT 1/2 inch NPT
QSE07NPT 3/4 inch NPT
QSE10NPT 1 inch NPT
QSE15NPT 1-1/2 inch NPT
QSE20NPT 2 inch NPT
BSPP MODELS
QSE05BSP 1/2 inch BSPP
(ISO 228 - G 1/2)
QSE07BSP 3/4 inch BSPP
(ISO 228 - G 3/4)
QSE10BSP 1 inch BSPP
(ISO 228 - G 1)
QSE15BSP 1-1/2 inch BSPP
(ISO 228 - G 1 1/2)
QSE20BSP 2 inch BSPP
(ISO 228 - G 2)
ANSI FLANGE MODELS
QSE30FAP 3 inch 150 # ANSI
Flange (Polymer)
QSE40FAP 4 inch 150 # ANSI
Flange (Polymer)
QSE30FAS 3 inch 150 # ANSI
Flange (Steel)
QSE40FAS 4 inch 150 # ANSI
Flange (Steel)
DIN FLANGE MODELS
QSE30FDS 3 inch DN80/PN10
Flange (Steel)
QSE40FDS 4 inch DN100/PN10
Flange (Steel)
WETTED COMPONENTS
Housing NORYL™
GFN3 PPE+PS
Electrodes 316L Stainless
Steel
Temperature
Probes
316 Series
Stainless Steel
Pipe Plugs 300 Series
Stainless Steel
O-Rings
EPDM
(Ethylene Propylene
Diene Monomer)
MAXIMUM WORKING PRESSURE
De-rate maximum working
pressure 0.682 PSIG per each
degree °F above 70°F
NPT 150 PSIG @70°F
10.3 BAR @ 21°C
BSPP 150 PSIG @70°F
10.3 BAR @ 21°C
ANSI FLANGE 150 PSIG @70°F
10.3 BAR @ 21°C
DIN FLANGE 150 PSIG @70°F
10.3 BAR @ 21°C
POWER SUPPLY
Voltage
Requirement
Min. 12 VDC or
12 VAC, 50-60 Hz
(Lower voltage will
cause inaccurate
readings)
Max. 36 VDC or
30 VAC, 50-60 Hz
(higher voltage
may damage unit)
ELECTRICAL
Pollution
Degree 2
Installation
Category 1
Altitude 20000m Max.
IP67 rated enclosure.
CSA approved for indoor use only
See electronics manuals for
electronic specications.
SPECIFICATIONS

12
U.S. MEASUREMENT
Unit of Measure: Gallon
TURNDOWN 60:1
ACCURACY
Line Size Flow Range
(GPM) ACCURACY ±Uncertainty
Typ.
K-factor
(PPG)
1/2 inch 0.16 to 10 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.023
fps
± .015
gpm 4347
3/4 inch 0.33 to 20 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.012
fps
± .015
gpm 1937
1 inch 0.67 to 40 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.006
fps
± .015
gpm 1089
1 1/2
inch
1.33 to 80 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .015
gpm 484.1
2 inch 2.5 to 150 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .030
gpm 400
3 inch 5 to 300 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .060
gpm 121
4 inch 10 to 600 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .120
gpm 68.1
FLUID OPERATING
TEMPERATURE:
+32° F to +210° F (NPT & BSPP)
+32° F to +180° F (Polymer and Steel Flanges)
(Do not allow uid to freeze inside meter.)
STORAGE
TEMPERATURE: –40° F to +228° F
AMBIENT AIR
OPERATING
TEMPERATURE
0° F to +140° F
ALL METERS
There is a correlation between ambient air temperature
and maximum uid operating temperature. As ambient
air temperature increases, the maximum uid operating
temperature decreases. See Maximum Temperature Conditions
graph named “TEMPERATURES” on page 16 to verify that
your process is within allowable meter operating limits.

13
METRIC MEASUREMENT
Unit of Measure: Litre
TURNDOWN 60:1
ACCURACY
Line
Size
Flow Range
(L/min) ACCURACY ±Uncertainty
Typ.
K-factor
(PPL)
1/2
inch
0.63 to 38 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 7.0
mm/s
± .057
L/min 1148.5
3/4
inch
1.27 to 76 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 3.7
mm/s
± .057
L/min 511.8
1 inch 2.52 to 151 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 2.0
mm/s
± .057
L/min 287.7
1 1/2
inch
5.05 to 303 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 1.0
mm/s
± .057
L/min 127.9
2 inch 9.47 to 568 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 1.0
mm/s
± .114
L/min 105.7
3 inch 19 to 1140 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 1.0
mm/s
± .227
L/min 30
4 inch 38 to 2270 L/min
[.076 to 4.57 m/s]
± 0.5% of
Reading
± 1.0
mm/s
± .454
L/min 18
FLUID OPERATING
TEMPERATURE:
0° C to +98° C (NPT & BSPP)
0° C to +82° C (Polymer and Steel Flanges)
(Do not allow uid to freeze inside meter.)
STORAGE
TEMPERATURE: –40° C to +108° C
AMBIENT AIR
OPERATING
TEMPERATURE
-18° C to +60° C
ALL METERS
There is a correlation between ambient air temperature
and maximum uid operating temperature. As ambient
air temperature increases, the maximum uid operating
temperature decreases. See Maximum Temperature Conditions
graph named “TEMPERATURES” on page 16 to verify that
your process is within allowable meter operating limits.

14
PRODUCT WEIGHT – kg:*
NPT / BSPP ANSI Polymer
Flange
ANSI Steel
Flange
DIN Steel
Flange
1/2 in. 1.1 - - -
3/4 in. 1.2 - - -
1 in. 1.2 - - -
1 1/2 in. 1.8 - - -
2 in. 2.0 - - -
3 in. - 6.4 11.1 10.2
4 in. - 7.4 13.4 10.8
* Weight with display. For plain cover plates, subtract 0.09 kg.
PRODUCT WEIGHT – lb:*
NPT / BSPP ANSI Polymer
Flange
ANSI Steel
Flange
DIN Steel
Flange
1/2 in. 2.5 - - -
3/4 in. 2.6 - - -
1 in. 2.7 - - -
1 1/2 in. 3.9 - - -
2 in. 4.3 - - -
3 in. - 14 24.4 22.5
4 in. - 16.3 29.5 23.7
* Weight with display. For plain cover plates, subtract 0.2 lb.
U.S. PRODUCT WEIGHT
METRIC PRODUCT WEIGHT

15
CA
NPT / BSPP WITH 09 ELECTRONICS NPT / BSPP WITH QB ELECTRONICS
BD
E
QSE METER DIMENSIONS (NPT, BSP, FLANGE)
METER SIZE & FITTING A B C D E
1/2 in. NPT & BSP 5.20 [132.1] 5.83 [148.1] 10.50 [266.7] 5.13 [130.3] 1.83 [46.5]
3/4 in. NPT & BSP 5.20 [132.1] 5.83 [148.1] 10.75 [273.1] 5.13 [130.3] 1.83 [46.5]
1 in. NPT & BSP5.20 [132.1] 5.83 [148.1] 11.00 [279.4] 5.13 [130.3] 1.83 [46.5]
1 1/2 in. NPT & BSP 5.22 [132.6] 6.95 [176.5] 11.00 [279.4] 6.25 [158.8] 2.37 [60.2]
2 in. NPT & BSP5.22 [132.6] 6.95 [176.5] 11.00 [279.4] 6.25 [158.8] 2.37 [60.2]
3 in Flange 7.50 [190.5] 9.62 [244.3] 12.00 [304.8] 8.92 [226.6] 3.25 [82.6]
4in. Flange 9.00 [228.6] 10.37 [263.4] 12.00 [304.8] 9.67 [245.6] 4.50 [114.3]
FLANGE WITH 09 ELECTRONICS FLANGE WITH QB ELECTRONICS
A
B
E
D
C
MILLIMETER DIMENSIONS SHOWN IN BRACKETS
6.31
[160.2]
ALL METERS
DIMENSIONS
QSE METER DIMENSIONS (NPT, BSPP, ANSI FLANGE, DIN FLANGE)
listed in inches; millimeters listed in [ ] brackets
METER SIZE
& FITTING A B C D E
1/2 in.
NPT & BSPP 5.20 [132.1] 5.83 [148.1] 10.50 [266.7] 5.13 [130.9] 1.83 [46.5]
3/4 in.
NPT & BSPP 5.20 [132.1] 5.83 [148.1] 10.75 [w273.1] 5.13 [130.9] 1.83 [46.5]
1 in. NPT & BSPP 5.20 [132.1] 5.83 [148.1] 11.00 [279.4] 5.13 [130.9] 1.83 [46.5]
1-1/2 in.
NPT & BSPP 5.22 [132.6] 6.95 [176.5] 11.00 [279.4] 6.25 [158.8] 2.37 [60.2]
2 in. NPT & BSPP 5.22 [132.6] 6.95 [176.5] 11.00 [279.4] 6.25 [158.8] 2.37 [60.2]
3 in. ANSI Flange 7.50 [190.5] 9.62 [244.3] 12.00 [304.8] 8.92 [226.6] 3.75 [95.3]
4 in. ANSI Flange 9.00 [228.6] 10.37
[263.4] 12.00 [304.8] 9.67 [245.6] 4.50 [114.3]
3 in. DIN Flange 7.87 [200.0] 9.80 [248.9] 12.00 [304.8] 9.10 [231.1] 3.94
[100.0]
4 in. DIN Flange 8.66 [220.0] 10.2 [259.1] 12.00 [304.8] 9.5 [241.3] 4.33
[110.0]

16
TEMPERATURES









    








17
The useful unit for seawater is
milimhos/cm (mS/cm); seawater is
around 55 mS/cm. The useful unit
for freshwater is micromhos/cm
(µmhos/cm, or µS/cm); tap water
ranges between 50 and 800 µS/
cm (depending on the source).
The basic unit of uid conductivity
is “mho/cm”, otherwise known as 1
Siemen. However, this unit does not
really occur in water, so we typically
use one thousandth (mili-) or one
millionths (micro-) of it for natural
waters (1000 milimhos and 1,000,000
micromhos are equal to one mho).
FLUID ELECTRICAL CONDUCTIVITY
Fluid Electrical Conductivity Reference:
Electrical Conductivity of Common Fluids
FLUID TEMPERATURE
(°F)
CONDUCTIVITY
(µs/cm)
Coca Cola Syrup 68 600
Coffee Extract 183.2 5000
Corn Syrup 89.6 16
Ethylene Glycol (Pure) 68 1.07
Gin 90 Proof 77 10
ISO-propyl Alcohol 77 3.5
Molasses 50 300
RC Cola Syrup 77 600
Sugar Solution Dilute 86 585
Urea 77 5000
Vodka 100 Proof 77 4
Water, Distilled - 0.04
Water, NYC 77 72
NOTE: This table of uid conductivity
is for reference only, to show the
relative conductivity of various uids.
Since the list contains ammable
uids, it is not to be construed as
a list of permissible uids to be
used with QSE series meters.
NOTE: QSE series meters are
for use with water, aqueous
solutions and other non-ammable,
electrically conductive uids. Do
not use the meter with petroleum
products (diesel fuel, unleaded
gasoline, jet fuel, kerosene, etc.)
or other incompatible chemicals.

18
BSPP METER
FITTING END
920896-01
REV. P
L, N1, N2 & N3
W
T
B
A1 & A2
U
P1, P2
& P3
S1, S2, S3,
S4, S5 & S6
(Polymer flanges shown)
V1, V2, V3, V4 & V5
R
C, D, E, F,
G, H & J
K, M1,
M2 & M3
X

19
REPLACEMENT PARTS LIST
REF. PART NUMBER DESCRIPTION NO
REQ’D.
A1 145500-01 Kit, 1 in. temperature sensor probe
Includes: (2) probes, (2) strain reliefs w/O-rings 1
A2 145500-02 Kit, 2 in. temperature sensor probe
Includes: (2) probes, (2) strain reliefs w/O-rings. 1
B 145500-03 Kit, pipe plug, 1/8-27 NPT stainless steel Includes: (2) plugs. 1
C 145501-01 Kit, Q09 computer display, 1/2 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
D 145501-02 Kit, Q09 computer display, 3/4 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
E 145501-03 Kit, Q09 computer display, 1 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
F 145501-04 Kit, Q09 computer display, 1-1/2 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
G 145501-05 Kit, Q09 computer display, 2 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
H 145501-06 Kit, Q09 computer display, 3 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
J 145501-07 Kit, Q09 computer display, 4 in.
Includes: Computer display w/decal, seal, 10 pin connector. 1
K 145500-14
Kit, QSB w/display cover plate.
Includes: Display cover plate, QSB electronics with
ribbon cable, (6) screws, cover plate seal.
1
L 145500-15
Kit, QSB w/plain cover plate.
Includes: Plain cover plate w/decal, QSB electronics
with ribbon cable, (6) screws, cover plate seal.
1
M1 145502-01
Kit, QSI1 w/display cover plate.
Includes: Display cover plate, QSI1 electronics with
ribbon cable, (6) screws, cover plate seal.
1
M2 145502-02
Kit, QSI2 w/display cover plate.
Includes: Display cover plate, QSI2 electronics with
ribbon cable, (6) screws, cover plate seal.
1
M3 145502-03
Kit, QSI3 w/display cover plate.
Includes: Display cover plate, QSI3 electronics with
ribbon cable, (6) screws, cover plate seal.
1
N1 145503-01
Kit, QSI1 w/plain cover plate.
Includes: Plain cover plate w/decal, QSI1 electronics
with ribbon cable, (6) screws, cover plate seal.
1
N2 145503-02
Kit, QSI2 w/plain cover plate.
Includes: Plain cover plate w/decal, QSI2 electronics
with ribbon cable, (6) screws, cover plate seal.
1
N3 145503-03
Kit, QSI3 w/plain cover plate.
Includes: Plain cover plate w/decal, QSI3 electronics
with ribbon cable, (6) screws, cover plate seal.
1

20
P1 145500-04 Kit, O-rings, 1/2 in., 3/4 in. and 1 in. housings.
Includes: (2) O-rings. 1
P2 145500-05 Kit, O-rings, 1-1/2 in. and 2 in. housings. Includes: (2) O-rings. 1
P3 145500-06 Kit, O-rings, 3 in. and 4 in. housings. Includes: (2) O-rings. 1
R 145500-07 Kit, seal, cover plate. Includes: (1) Cover plate seal. 1
S1 145500-08 Kit, ANSI ange, polymer, 3 in.
Includes: (2) 3 in. polymer anges, (4) 3 in. half-ring keys. 1
S2 145500-09 Kit, ANSI ange, polymer, 4 in.
Includes: (2) 4 in. polymer anges, (4) 4 in. half-ring keys. 1
S3 145500-10 Kit, ANSI ange, steel, 3 in.
Includes: (2) 3 in. steel anges, (4) 3 in. half-ring keys. 1
S4 145500-11 Kit, ANSI ange, steel, 4 in.
Includes: (2) 4 in. steel anges, (4) 4 in. half-ring keys. 1
S5 145500-16 Kit, DIN ange, steel, DN80, PN10.
Includes: (2) 3 in. steel anges, (4) 3 in. half-ring keys. 1
S6 145500-17 Kit, DIN ange, steel, DN100, PN10.
Includes: (2) 4 in. steel anges, (4) 4 in. half-ring keys. 1
T 145500-12 Kit, strain relief, cover plate. Includes: (4) PG7 thread
strain reliefs, .11 - .26 cable diameter range 1
U 145500-13 Kit, strain relief, temperature sensor. Includes: (2) PG7 thread
strain reliefs (reduced t), .08 - .20 cable diameter range 1
V1 145500-20 Kit, O-ring & backup ring, 1/2 in. BSPP.
Includes: (2) O-rings, (2) backup rings. 1
V2 145500-21 Kit, O-ring & backup ring, 3/4 in. BSPP.
Includes: (2) O-rings, (2) backup rings. 1
V3 145500-22 Kit, O-ring & backup ring, 1 in. BSPP.
Includes: (2) O-rings, (2) backup rings. 1
V4 145500-23 Kit, O-ring & backup ring, 1-1/2 in. BSPP.
Includes: (2) O-rings, (2) backup rings. 1
V5 145500-24 Kit, O-ring & backup ring, 2 in. BSPP.
Includes: (2) O-rings, (2) backup rings. 1
W 145500-25 Kit, PG7 to 1/2 NPT adapter, cover plate.
Includes: (4) PG7 to 1/2 NPT male adapters 1
X 145177-501 Assembly, Ribbon Cable (9 INCH), Spare 1
Not
Shown 145630-529
Kit, grounding probe
Includes: (2) grounding probes, (2) screws,
(4) terminal rings, instruction sheet.
1