Blancett 1200 Service manual

8635 Washington Avenue
Racine, Wisconsin 53406
Toll Free: 800.235.1638
Phone: [phone] •Fax: [phone]
www.blancett.com
Model 1200
Turbine Flow Meter
INSTALLATION & INSTRUCTION
MANUAL

2 Form No. B120-011 07/09
TABLE OF CONTENTS
Introduction.......................................................................3
Operating Principle ..........................................................3
Specifications...................................................................3
Installation Instructions...................................................5
Wiring Instructions...........................................................7
Operational Start-up.........................................................8
Troubleshooting ...............................................................9
Part Number Information...............................................10
Statement of Warranty ...................................................12
NOTE: Blancett reserves the right to make any changes or
improvements to the product described in this manual at any
time without notice.

Form No. B120-011 07/09 3
INTRODUCTION
The Blancett Model 1200 in-line turbine flow meter was engineered
for applications in high corrosive environments. Developed for use
in petrochemical and other process industries with liquid chemical
flows, the Model 1200 turbine provides accuracy and durability
in aggressive industrial environments. The meter features a 303
stainless steel body and internal wetted parts, with two Type 440
stainless steel ball bearings.
OPERATING PRINCIPLE
Fluid moving through the turbine flow meter causes the rotor to
rotate at a speed proportional to the fluid velocity. As rotor blades
pass the RF pick-up, it detects the shift in the carrier frequency, and
then generates a square wave output signal that is proportional to
the rotation of the rotor. This signal is used to represent flow rate
and totalization of fluid passing through the turbine flow meter.
SPECIFICATIONS
MATERIALS of CONSTRUCTION:
Body: 303 Stainless Steel
Rotor: CD4MCU Stainless Steel
Bearings: Two (2) Type 440 Stainless Steel Ball Bearings
Rotor Support and Shaft: 303 Stainless Steel
OPERATING LIMITATIONS:
Temperature:
Meter -60 °F to +350 °F (-51 °C to +177 °C)
RF Pick-up -150 °F to +325 °F (-101 °C to +162 °C)
Pressure: 4,000 PSI (275 Bar) maximum
WARNING: Pressure in excess of allowable rating may cause
the housing to burst and cause serious personal injury.

4 Form No. B120-011 07/09
Accuracy: ±0.5% of reading
Repeatability: ±0.1%
Calibration: Water (NIST Traceable Calibration)
Corrosion: All Blancett Model 1200 turbine meters are
constructed of stainless steel. The operator must
ensure that the operating fluid is compatible with
these materials. Incompatible fluids can cause
deterioration of internal components and cause a
reduction in meter accuracy.
Pulsation and
Vibration: Severe pulsation and mechanical vibration will
affect accuracy and shorten the life of the meter.
Filtration: If small particles are present in the fluid, Blancett
recommends that a strainer be installed upstream
of the meter (see Table 1 on page 5 for filtration
recommendations).
RF PREAMPLIFIER:
Input Signal: 1 mil Henry carrier pick-up
Output Signal: 10.0 Volts peak to peak square wave
Temperature:
Module -20 °F to +160 °F (-7 °C to +71 °C)
Pick-up -150 °F to +325 °F (-101 °C to +162 °C)
Power: 7 to 30 Volts DC
Distance
Specification: 50 feet maximum between pick-up and RF
preamplifier (two wire no. 18, twisted shielded
pair)
1000 feet maximum between preamplifier
and receiving unit (two wire no. 18, twisted
shielded pair)
Electrical Connection: Terminal strip
Housing: Epoxy encapsulated module

Form No. B120-011 07/09 5
INSTALLATION INSTRUCTIONS
Prior to installation, the flow meter should be checked internally for
foreign material and to ensure that the rotor spins freely. Fluid lines
should also be checked and cleared of all debris.
The flow meter must be installed with the flow arrow, etched on
the exterior of the meter body, pointing in the direction of fluid
flow. Though the meter is designed to function in any position, it
is recommended, where possible, to install horizontally with the
magnetic pick-up facing upward.
The liquid being measured must be free of any large particles that
may obstruct the rotation of the rotor. If particles are present, a
mesh strainer should be installed upstream before operation of the
flow meter. (See Table 1)
Part Number Size Strainer Mesh Clearance
B121-225 ¼″60 × 60 .0092
B121-250 ½″60 × 60 .0092
B121-275 ¾″60 × 60 .0092
Table 1
Filtration recommendations
The preferred plumbing setup is one containing a by-pass line that
allows meter inspection and repair without interrupting flow. If a
by-pass line in not utilized, it is important that all control valves be
located downstream of the flow meter. See Figures 1 and 2 on
page 6.
This is true with any restriction in the flow line that may cause the
liquid to flash. If necessary, air eliminators should be installed to
ensure that the meter is not incorrectly measuring entrained air or
gas.
CAUTION: Damage can be caused by striking an empty meter
with a high velocity stream of flow.

6 Form No. B120-011 07/09
It is recommended that a minimum length equal to ten (10) pipe
diameters of straight pipe be installed on the upstream side and five
(5) diameters on the downstream side of the flow meter. Otherwise,
meter accuracy may be affected. Piping should be the same size
as the meter bore (size).
Do not locate the flow meter or connection cable close to electric
motors, transformers, sparking devices, high voltage lines, or place
connecting cable in conduit with wires furnishing power for such
devices. These devices can induce false signals in the flow meter
coil or cable, causing the meter to read inaccurately.
Figure 1
Meter installation utilizing a by-pass line
Figure 2
Meter installation without utilizing a by-pass line

Form No. B120-011 07/09 7
WIRING INSTRUCTIONS
Figure 3
Wiring diagram with RF pick-up,
cable assembly and preamplifier
Terminal Description Notes
1 Power 7 to 30 VDC
2 Common Power Return
3 Output Signal 10V Square Wave
4 Input 1 mil Henry RF Pick-up
5 Input 1 mil Henry RF Pick-up
PART #222228
RF PREAMP
PART #111117
RF PICK-UP
ILLUSTRATION USING
MODEL 121-225 METER
CABLE ASSEMBLY
PART #120003
(REF 10' CABLE)
BLACK
WHITE
COMMON
7 - 30 VDC
GREEN
1 2
10V PULSE OUT
43 5

8 Form No. B120-011 07/09
OPERATIONAL START-UP
The following practices should be observed when installing and
starting the meter.
After meter installation, close the isolation valves, and open1. the by-pass valve. Flow liquid through the by-pass valve for
sufficient time to eliminate any air or gas in the flow line.
Open upstream isolating valve slowly to eliminate hydraulic2. shock while charging the meter with the liquid. Open the valve
to full open.
Open downstream isolating valve to permit meter to operate.3. Close the by-pass valve to a full closed position.4. Adjust the downstream valve to provide the required flow rate5. through the meter. Note: The downstream valve may be used
as a control valve.
CAUTION: High velocity air or gas may damage the internal
components of the meter.
WARNING: Make sure that fluid flow has been shut off and
pressure in the line released before attempting to install the
meter in an existing system.

Form No. B120-011 07/09 9
APPENDIX A
TROUBLESHOOTING GUIDE
Trouble Possible Cause Remedy
Meter indicates higher
than actual flow rate Cavitation• Debris on rotor support• Increase back pressure• Clean meter•
Meter indicates lower
than actual flow rate Debris on rotor•
Worn bearing•Viscosity higher than•calibrated
Clean meter and add•filter
Replace meter•Change temperature;•change fluid; recalibrate
meter
Erratic system
indication, meter alone
works well
Ground loop in shielding Ground shield one place
only
Indicator shows flow
when shut off Mechanical vibration causes rotor to oscillate without
turning
Isolate meter
No flow indication,
full or partial open
position
Fluid shock, full flow into
dry meter or impact caused
bearing separation
New bearing required.
Move to location where
meter is full of fluid on
start-up.
Erratic indication at
low flow, good
indication at high flow
Low instrument sensitivity.
10mV rms turbine signal
is being lowered by
loading of electronics or
instrumentation can’t sense
low level signals.
Amplify signal
No flow indication Faulty pick-up Replace pick-up,
recalibrate as necessary
System works perfect,
except indicates lower
flow over entire range
By-pass flow, leak Eliminate by-pass valves,
leak. Repair or replace
faulty solenoid valves.
Meter indicating high
flow, upstream piping
at meter smaller than
meter bore
Fluid jet impingement on
rotor, critical in gas Change piping
Opposite effects of
above Viscosity lower than calibrated Change temperature, change fluid or recalibrate
meter
Mass flow indication
wrong Wrong fluid density, critical in gas Check fluid, electronics
Erratic or wrong
indication of flow Loose pick-up Tighten pick-up
Does not repeat at low
flows. Repeats at high
flow.
System resolution readability Increase resolution, i.e.,
1 out of 100 = 1%

10 Form No. B120-011 07/09
APPENDIX B
PART NUMBER INFORMATION
Part
Number End Connection
Flow Ranges Approx
K-factor
Pulses/Gal
GPM LPM
B121-225 ½″Male NPT 0.25 - 2.5 0.57 - 9.46 29,000 - 33,000
B121-250 ½″Female NPT 0.75 - 7.5 0.95 - 28.39 8,500 - 9,500
B121-275 1″Male NPT 2.5 - 25 1.89 - 94.64 2,800 - 3,000

Form No. B120-011 07/09 11
STATEMENT OF WARRANTY
Blancett Flow Meters, Division of Racine Federated Inc. warrants to
theendpurchaser, foraperiod ofoneyearfromthedateofshipment
from the factory, that all flow meters manufactured by it are free
from defects in materials and workmanship. This warranty does not
cover products that have been damaged due to defects caused by
misapplication, abuse, lack of maintenance, modified or improper
installation. Blancett’s obligation under this warranty is limited to
the repair or replacement of a defective product, at no charge to the
end purchase, if the product is inspected by Blancett and found to
be defective. Repair or replacement is at Blancett’s discretion. A
return goods authorization (RGA) number must be obtained from
Blancett before any product may be returned for warranty repair
or replacement. The product must be thoroughly cleaned and any
process chemicals removed before it will be accepted for return.
The purchaser must determine the applicability of the product for its
desired use and assumes all risks in connection therewith. Blancett
assumes no responsibility or liability for any omissions or errors
in connection with the use of its products. Blancett will under no
circumstancesbeliableforanyincidental,consequential,contingent
or special damages or loss to any person or property arising out of
the failure of any product, component or accessory.
Allexpressedor impliedwarranties, includingthe implied warranty
of merchantability and the implied warranty of fitness for a
particular purpose or application are expressly disclaimed
and shall not apply to any products sold or services rendered by
Blancett.
Theabovewarrantysupersedesandisinlieuofallotherwarranties,
either expressed or implied and all other obligations or liabilities.
No agent or representative has any authority to alter the terms of
this warranty in any way.

8635 Washington Avenue • Racine, Wisconsin 53406
Toll Free: 800.235.1638
Phone: [phone] •Fax: [phone]
www.blancett.com •[email protected]
BLANCETT is a registered trademark of Racine Federated Inc.
UL is a registered trademark of Underwriters Laboratories.
© 2009 Racine Federated Inc. Printed in USA
Form No. B120-011 07/09