NuFlo WECO 1502 User manual
Valves & Measurement
NUFLO
WECO 1502
Liquid Turbine Flow Meter
User Manual
Manual No. 9A-10165002, Rev. 04
Approved for Pressure Equipment Directive (PED)
Important Information
Terms Used in this Manual
Important: Indicates actions or procedures which may affect instrument operation or may lead to an
instrument response which is not planned.
Note: Indicatesadditionalinformationaboutspecicconditionsorcircumstances.
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Copyright © 2016 Schlumberger Limited. Allrightsreserved.
ManualNo.9A-10165002,Rev.04
October2016
iii
NuFlo WECO 1502 Liquid Turbine Flowmeter Table of Contents
Table of Contents
Description.......................................................................................................................................................... 5
SafetyPrecautions............................................................................................................................................. 6
Flowmeter Installation......................................................................................................................................... 6
Flowmeter Maintenance..................................................................................................................................... 8
DisassemblingtheFlowmeter...................................................................................................................... 8
ReassemblingtheFlowmeter...................................................................................................................... 8
FlowRateSpecications.................................................................................................................................... 9
Table1—LinearFlowRange1,2..................................................................................................................... 9
ReplacementKits............................................................................................................................................... 9
Table2—ReplacementKits.......................................................................................................................... 9
iv
Table of Contents NuFlo WECO 1502 Liquid Turbine Flowmeter
This page left blank intentionally.
5
NuFlo WECO 1502 Liquid Turbine Flowmeter Section 1
Description
The NuFlo*WECO*1502 Liquid Turbine Flowmeter (Figure 1) is a rugged, versatile sensor capable of
handling a wide variety of liquids, including many types of slurries and suspensions. The owmeter contains
a rotor secured to a tungsten carbide shaft. The shaft is supported at each end by tungsten carbide bearings.
The rotor is made of a magnetic material, while the owmeter body is non-magnetic. A magnetic pickup,
consisting of a magnet and coil, is mounted externally in the body in the same plane as the rotor. Fluid
moving through the owmeter causes the rotor to rotate at a speed proportional to the uid velocity. The rotor
blades cutting the magnetic eld in the vicinity of the magnetic pickup create a frequency signal proportional
to the uid velocity. This signal is used to represent ow rate and can be accumulated to totalize the volume
of liquid through the owmeter.
For easy reference, the meter specications, including part number, serial number, material, nominal diameter
(DN), and maximum working pressure, are imprinted on a stainless steel tag on the meter body (Figure 2,
page 6).
Each owmeter is furnished with a calibration factor representing the number of pulses per gallon produced
during the calibration process. Precalibrated rotor and vane kits are available for eld replacement (see Table
2, page 9). Meters and kits have a linearity of ±1%.
Retainer ring (2 typ.)
Rotor
Flowmeter housing
Flow vanes
Figure 1—Nomenclature
6
Section 1 NuFlo WECO 1502 Liquid Turbine Flowmeter
9A-10101071 01
12085263103-16
Figure 2—Example of product identication tag on owmeter body
Safety Precautions
Always observe the following precautions when installing or operating the owmeter:
• Clean all upstream lines before installing the owmeter.
• Do not blow out lines with compressed air or gas after the meter is installed.
• Do not slug the owmeter with uid. Initial lling of line with uid should be done with care.
• Do not exceed maximum recommended ow rates through the owmeter (Table 2, page 9).
• Avoid hammer blows or other sharp impacts on the owmeter. Such impacts may break the shaft.
• If the end connection leaks at the time of installation, remove pressure before attempting to seal.
• The customer is responsible for ensuring chemical compatibility between the meter materials and any
uids being metered.
• The meter will retain the temperature of the uid. Use caution when touching the meter body.
Flowmeter Installation
Install the NuFlo WECO 1502 Liquid Turbine Flowmeter as follows.
Note: Theowmetermaybeinstalledinanyorientation(vertical,horizontal,etc.).
1. Install a straight section of pipe on either side of the meter.
• This pipe must be the same nominal pipe size as the meter with a length of at least 10 pipe diameters
upstream and 5 pipe diameters downstream. (For example, a owmeter with a 2-in. nominal diameter
requires a 2-in. pipe. The section of straight pipe upstream must be 20 in.; the section downstream
must be 10 in.)
• Do not install throttling valves upstream of the owmeter.
2. Align the meter bore with the pipe, ensuring that the direction of ow corresponds with the direction of
the arrow engraved on the meter body.
7
NuFlo WECO 1502 Liquid Turbine Flowmeter Section 1
3. Using caution, tighten the hammer union nuts for a leak-proof seal. Impact to the side of the meter can
damage the internals.
4. Install the magnetic pickup as follows, referencing Figure 3 as needed:
a. Screw the magnetic pickup clockwise into the conduit adapter until nger tight. Then rotate the
pickup counter-clockwise one quarter turn. Do not tighten with pliers.
b. Turn the jam nut clockwise until the pickup is secure. A 3/4-in. 12-point deep thin-wall socket wrench
(Part No. 9A-100013146) is required.
c. Attach the signal cable connector to the pickup and turn the swivel nut until the connection is snug.
Do not over-tighten.
d. Loosen the gland nut so that the weatherproof pickup adapter rotates freely without twisting the signal
cable.
e. Slip the weatherproof pickup adapter over the pickup and tighten.
f. Tighten the gland nut until the rubber grommet seals around the signal cable.
NOTE: Pipe must be of same nominal size as flowmeter end connection.
Weatherproof pickup adapter
Gland nut
Signal cable connector
with swivel nut Magnetic pickup (supplied separately;
meter can accept two, as shown)
Jam nut
Conduit adapter Flow direction indicator
Signal cable
5 PIPE DIAMETERS (MIN)
STRAIGHT PIPE DOWNSTREAM
10 PIPE DIAMETERS (MIN)
STRAIGHT PIPE UPSTREAM
Figure 3—Installation of magnetic pickup
8
Section 1 NuFlo WECO 1502 Liquid Turbine Flowmeter
Flowmeter Maintenance
The owmeter may be disassembled for inspection, cleaning, or repair. The following instructions are
applicable to all meter sizes, except as noted.
Disassembling the Flowmeter
1. Unscrew the magnetic pickup from the meter body to avoid damage during handling of the meter.
2. Remove the retainer ring from one end of the meter body.
3. Slide the vane from the meter body.
Note: Someslottedmetersmayrequireaslighttwistofthevanetoalignthevanewiththeslotinthemeter
body.(Ifthevaneisstuck,insertabrassrodthroughtheoppositevaneandthroughtherotorand
drivethevaneoutbytappingonalternatebladesofthevane.)
4. Remove the rotor. Handle it with care to prevent damage to the rotor shaft.
5. Remove the retainer ring from the other end of the meter body.
6. Remove the second vane.
7. Do not attempt to remove the bearings and thrust balls from the vanes.
8. Clean all parts with a solvent suitable for removing the material that has owed through the meter. A cot-
ton swab is very useful for cleaning the inside diameter of the bearings.
Important: If the meter internals are damaged, always replace the entire kit (Table 2, page 9). Never
exchange only the damaged piece. The kits are provided as a calibrated set of compo-
nents. Accuracy will be sacriced by replacing just individual parts.
Reassembling the Flowmeter
The meter is assembled in the following manner:
1. Observe the arrows cast or engraved on each part, indicating the direction of ow. When the meter is
assembled, these arrowheads and the arrow engraved on the meter body (see ow direction indicator in
Figure 3, page 7) must point in the direction that product will ow through the meter.
2. Observe that one blade on each vane has an arrow on it and that retainer pins or notches are provided at
each end of the meter body. The marked blade must be inserted between these retainer pins or notches that
are opposite the conduit adapter (or on the bottom of the meter body). The meters are calibrated in this
position, and should be reassembled in this position for the greatest accuracy.
3. Insert one of the vane assemblies in the meter body bore, taking care to orient the ow direction arrows
correctly. The vane should t snugly but should not require excessive force to install. Install the retainer
ring.
4. Install the rotor, being careful to properly orient the direction arrow on the rotor. Care should be taken to
avoid chipping the rotor shaft, which is constructed of tungsten carbide, a brittle metal.
9
NuFlo WECO 1502 Liquid Turbine Flowmeter Section 1
5. Insert the second vane assembly. If this vane does not fall into position when placed in the meter body,
rotate the rotor, if possible, to align the bearing and rotor shaft. Do not attempt to drive the vane in, as this
will result in a broken rotor shaft. Install the retainer ring.
6. Spin the rotor by hand, making sure that the rotor moves freely. If the rotor will not turn or stops abruptly,
the meter should be disassembled and checked.
7. The meter is now ready for installation. Follow the owmeter installation procedure as described on page
6.
Flow Rate Specications
Table 1—Linear Flow Range1,2
Flowmeter
Size
in.
(mm)
GPM M3/hr BPD
Nominal(2)
Cal. Factor
pulses/gal
(pulses x 1000/m3)
Max. Output
Frequency
pulses/sec
ΔP at
Max. Flow(2)
psi
(kPa)
1
(25) 5 – 50 1 .14 – 11.36 170 – 1700 900
(238) 750 20.0
(138)
1 ½
(38) 15 – 180 3.41 – 40.88 515 – 6000 325
(86) 975 16.0
(110)
2
(51) 40 – 400 9.09 – 90.85 1300 – 13000 55
(14.5) 365 22.0
(152)
3
(76) 80 – 800 18.16 – 181.66 2750 – 27500 57
(15.2) 760 20.0
(138)
4
(102) 100 – 1200 22.71 – 272.55 3400 – 41000 30
(7.9) 600 10.0
(69)
1. Thelinearowrangeofliquidswithnon-lubricatingcharacteristicsislimitedtotheupper60%ofrating.
2. Basedonwater.
Replacement Kits
Each replacement kit contains a rotor, two vane assemblies, two retainer rings, and a calibration tag. All
components are calibrated as a set and should be installed as a set. Components should not be installed
individually.
Table 2—Replacement Kits
Meter Size (in.) Kit Part Number
19A-100003527
1-1/2 9A-100003469
29A-100003474
39A-100003470
49A-100003473
10
Section 1 NuFlo WECO 1502 Liquid Turbine Flowmeter
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