Full Pipe Recommendations .............................................................................................................................. Page 6
Connection Diagrams
FT415/FT420/AO55, Connecting to PLC's........................................................................................................ Page 7
Operation
Minimum Flow, Flow Range Table, Calibration (“K-Factor”), Field Calibration................................................Page 8
Maintenance
Rotor Replacement, Signal Troubleshooting, Sensor Replacement ............................................................... Page 9
Parts Explosion
Parts List .............................................................................................................................................................Page 10
Troubleshooting
Problems, Probable Causes, To Check, To Repair ............................................................................................Page 11
TABLES AND DIAGRAMS
Page 5
Specifications, Features ........................................................................................Page 3
Distorted Flows, Positioning the Meter ..................................................................Page 4
Flow Range Table, K-Factor Number on Tee Fitting, K-Factor Chart, Pressure vs. Temp Chart...................Page 8
Rotor and Sensor Replacement .............................................................................Page 9
Parts Explosion, Parts List ........................................................................................................................Page 10
The IP800-Series are impeller (or “paddlewheel”) insertion me-
ters designed for use with a wide variety of liquids in pipe sizes
1/2" to 8". Sensors are available in brass, 316 stainless steel,
PVC, and polypropylene. Bodies are machined from a solid rod
for maximum precision. High-quality jewel bearings and nickelbound tungsten carbide shafts are used for extreme low friction
and long life. Low-ow performance is good, although other
Seametrics ow meters are recommended where extremely low
ows are being measured.
The rotation of the rotor is detected by a non-drag Hall-effect
sensor. Output is a current-sinking pulse (square wave), which
can be sent long distances (up to 2,000 feet) without a transmitter. This signal can be connected directly to PLC's, counters,
and computer cards, as well as a variety of Seametrics controls
and displays.
FEATURES
Cover or Optional Module
Housing Screw
(connect ground to one)
Cable-Seal Strain Relief
Lower Housing (optional)
Seametrics IP meters are ideal for chemical proportioning applications. If no display is required, a simple divider such as
the PD10 provides adjustable pump pacing. For rate and total
display, the FT415 (battery powered) or FT420 (loop powered)
ow indicator can be mounted directly on the IP800-Series
meter, or remotely on a wall or panel. The AO55 blind analog
transmitter can be used to convert to a 4-20 mA output. IP
meters are also compatible with the DL76 data logger and
FT520 batch processor.
The IP800-Series require special ttings that ensure correct
depth placement in the pipe. Fittings come in a variety of materials for compatibility with specic applications. Tee ttings
are individually wet-calibrated at the factory and marked with
the K-factor (pulses per gallon). Saddle ttings must be eldinstalled on the pipe and do not come wet-calibrated. K-factors
for saddles are based on factory-testing.
Caution: Clip(s)
must be installed
before use.
High Pressure Model
Retaining Slot (for U-Clip)
For easy installation at correct depth setting
O-Ring
Jewel Bearings for superior low-ow performance
Rotor
Temperature
Flow Range
Accuracy+/- 1.5% of full scale
SignalHall effect current sinking pulse
Power6-24 Vdc, 2 mA
Maximum Current
Cable#22 AWG 3-con, 18’ (6m); 2,000’ (650m) maximum cable run
Regulatory
*Specications subject to change • Please consult our website for current data (www.seametrics.com).
Insertion Depth. The IP800-Series are xed-depth meters
that must be used with matched ttings appropriate to the
application and pipe size. This ensures that the ow sensor
is installed at the correct insertion depth to measure the average ow velocity of the stream.
Straight Pipe. Straight pipe of at least 10 diameters upstream and ve diameters downstream of the meter is
strongly recommended for proper accuracy. This is necessary because the shape of the velocity prole changes as the
rate increases around an elbow; placing the meter too near
the elbow causes a distorted reading. Additional straight run
may be needed under specic adverse circumstances (see
next page).
If you can’t provide enough straight run to smooth out the
velocity prole, some decrease in accuracy may result. This
does not mean the meter’s reading is meaningless, however.
In some applications (e.g., control system, valve operation)
a repeatable reading may be more important than a highly
accurate one.
POSITIONING THE METER
Okay, if no air in pipe
BEST
Okay, if no sediment in pipe.
DISTORTED FLOWS
Faster Flow
Distorted
Flow Prole
Fitting Installation. Stainless steel and brass ttings have
female pipe threads, requiring the appropriate male threaded ttings. Saddle ttings require a hole to be cut in the
pipe (recommended hole size is 1-3/4”). Before cutting into
the pipe, observe the drawing below to choose your meter
orientation.
Causes Meter
To Read High
FLOW
10X
Diameter Minimum
(See Below)
5X
Diameter Minimum
(See Below)
PVC Fittings. A PVC tting is usually installed by solvent
welding. PVC tees are supplied with some upstream straight
pipe, less than the recommended straight pipe requirements. It is not advisable to connect directly to the end of
these ttings with a ow disturbing device (valve, elbow), but
rather add straight pipe to the end of these ttings to meet
the straight pipe requirements for your application.
Meter Installation. After the meter tting is installed in the
pipeline, the meter can be installed in the tting. Press the
meter into the tting as far as it will go. Retain the meter in
place by inserting the u-pin. The pin can be installed from
either side. It may be necessary to rotate the probe back
and forth slightly to start the pin into the slots on the probe.
Slide the pin in as far as it will go.
Caution: Never remove the u-clip retainer when
the pipe is under pressure. Always remove
pressure from the pipe before you attempt to
remove the meter. Removal under pressure
may result in damage or serious injury.
Page 4
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