Ametek 3330 User manual

OPERATION MANUAL
Model 3330 Inline Viscometer
Rev B –August 2022
P/N: 3330-OM
S/N: ____________
2001 N. Indianwood Ave.
Broken Arrow, Oklahoma 74012 U.S.A.
Telephone: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: http://www.chandlereng.com

Copyright ©2015, by Chandler Engineering Company L.L.C.
All rights reserved. Reproduction or use of contents in any manner is prohibited without express permission from Chandler Engineering Company L.L.C.
While every precaution has been taken in the preparation of this manual, the publisher assumes no responsibility for errors or omissions. Neither is any
liability assumed for damages resulting from the use of the information contained herein.
This publication contains the following trademarks and/or registered trademarks for AMETEK and CHANDLER ENGINEERING. These trademarks or
registered trademarks and stylized logos are all owned by AMETEK, Inc. All other company, product and service names and logos are trademarks or
service marks of their respective owners.

TABLE OF CONTENTS T-1
Table of Contents
General Information ............................................................... P-1
Description.............................................................................................................................P-1
Features and Benefits.............................................................................................................P-1
Specifications.........................................................................................................................P-2
Safety Requirements..............................................................................................................P-3
Where to Find Help................................................................................................................P-3
Section 1 –Installation ............................................................1-1
Unpacking the Instrument......................................................................................................1-1
Utilities Required...................................................................................................................1-1
Tools/Equipment Required....................................................................................................1-1
Instrument Preparation...........................................................................................................1-2
Section 2 –Operating Instructions...........................................2-1
Test Preparation ...............................................................................................................2-1
Test Completion and Clean-up ........................................................................................ 2-1
Section 3 - Maintenance ..........................................................3-1
Cleaning.................................................................................................................................3-1
Calibration..............................................................................................................................3-3
Checking Calibration .......................................................................................................3-3
Mechanical Calibration....................................................................................................3-3
Torsion Spring Assembly ...................................................................................................... 3-5
Replacement of Spring Assembly.................................................................................... 3-5
Encoder Assembly .................................................................................................................3-6
Replacement of the Encoder/Bearings.............................................................................3-6
Rotor Assembly .....................................................................................................................3-9
Replacement of Rotor Seal/Bearings...............................................................................3-9
Bob Assembly......................................................................................................................3-11
Replacement of Bob Shaft Bearings..............................................................................3-11
Maintenance Schedule ......................................................................................................... 3-12
Section 4 –Troubleshooting Guide .........................................4-1
Section 5 –Replacement Parts.................................................5-1
Section 6 - Drawings and Schematics......................................6-1

PREFACE P-1
General Information
Description
The Chandler Engineering Inline (Flow-Thru) Viscometer is a low pressure couette
(cup/bob) viscometer for real time measurement of oilfield fluids during treatments. The
instrument is connected in a sample line from the clean fluid delivery line.
The viscometer measures viscosity at the standard 511 sec-1 using the API standard R1 rotor,
B1 bob, and F1 spring. The spring is calibrated to provide 1 degree of rotation per 1
centipoise of viscosity.
Clean fluid flows into the instrument, where a specially designed rotor (cup) pulls fluid into
the gap between the rotor and the bob, when the rotor is turning. This design feature allows
the instrument to measure continuously at a constant sample rate while being insensitive to
flow rate through the instrument. Fluid in the gap is sheared producing a torque on the bob.
This torque is transmitted to the resisting spring using a magnetic drive. The magnetic drive
not only mechanically supports the bob but allows the torque to be transmitted without shaft
seals. The bob rotation is measured with a high precision encoder. The encoder signal is
then scaled to viscosity.
Optional pH measurement system is available.
Features and Benefits
•Based on API geometry.
•Standard analog 4-20mA signals for data acquisition.
•Easy to set-up, easy to operate, easy to clean and maintain.
•Broad range of sensitivity/scalability through the use of different rotor/bob and spring
combinations to accommodate a wide variety of fluid types.
•12 VDC power for field operation.
•Meets IP67 for outdoor environment.

P-2 PREFACE
Specifications
Pressure Range: 100 PSIG
Temperature Range: 32°F –160°F
Flowrate: 1-5 gpm
Viscosity Range: 0-160 cP
Input Voltage: 12VDC
Power: 6 A @ 12VDC
Dimensions: 13.5” x 17” x 20”
Net Weight: 56 lbs. (36 kg)
Operating Speed: 300 RPM (511 sec-1)
Connections: ½” NPT threads
Signal: 4-20 mA @ 600 ohms max

PREFACE P-3
Safety Requirements
READ BEFORE ATTEMPTING OPERATION OF INSTRUMENT
The Chandler Engineering Flow-Thru Viscometer is designed for operator safety. However,
the instrument should be handled by personnel that have the appropriate safety training.
To ensure safety:
•Use appropriate Personal Protective Equipment such as safety glasses, latex gloves, etc.
•Use proper lifting techniques when moving instrument.
•Read and understand instructions before attempting instrument operation.
•Observe caution notes!
•Observe and follow the warning labels on the instrument.
•Never exceed the instrument maximum pressure and temperature ratings.
•Always disconnect main power to the instrument before attempting any repair.
Before attempting to operate the instrument, the operator should read and understand
this manual.
Where to Find Help
In the event of problems, contact your local sales representative or Chandler Engineering:
•Telephone: [phone]
•Fax: [phone]
•E-mail: [email protected]
•Website: www.chandlereng.com
Instrument training classes are also available.

P-4 PREFACE
This page is intentionally left blank.

SECTION 1 –INSTALLATION 1-1
Section 1 –Installation
Unpacking the Instrument
Remove the instrument from the packing crate carefully. The unit comes fully equipped with
all the necessary components and ordered spare parts. Make sure that no parts are lost when
discarding the packing materials. Place the instrument on a firm table, close to the required
service connections.
After the instrument is removed from the shipping crate, the equipment and spare parts
should be checked against the packing list to ensure that all parts have been received and
none are damaged.
Note: File an insurance claim with your freight carrier if damage has occurred
during shipping. Verify all parts shown on the enclosed packing list have been
received. If items are missing, immediately notify Chandler Engineering.
Utilities Required
12VDC @ 6 amps
Tools/Equipment Required
Pipe Wrench
Allen Wrench Set
#2 Phillips Head Screwdriver
Flat Blade Screwdriver

1-2 SECTION 1 –INSTALLATION
Instrument Preparation
1. The viscometer is configured for portable or permanent installation.
2. The electronics enclosure is provided with 6 feet of instrument cable for remote mounting
the operator interface in a more convenient location.
3. The instrument is provided with 2, ½” NPT threads for fluid connections. Connect the
fluid delivery line from a clean fluid pressure source (such as the clean side blender
centrifugal) to the lower viscometer port (or the filter system if equipped). Connect the
return line from the upper port fitting on the viscometer to the return gel tank or the
suction side of the clean side centrifugal. A course screen should be placed in front of the
inlet of the fluid delivery line to prevent large particles such as gel balls from entering the
viscometer.
4. The instrument requires 12 VDC power at a maximum current of 6 amps. A bare wire
lead cable is provided for wiring a power cable. Connect the power cable as indicated:
•GRN/YEL (Chassis Ground)
•Brown (0 VDC)
•Blue (12 VDC)
5. The instrument provides (2) 4-20mA outputs, one for viscosity and one for temperature.
The viscosity signal is a self-powered, single ended 4-20mA current source.
Warning: Do not connect the viscosity signal to a circuit which provide power over
the current loop. The transmitter provides its own power.
The temperature signal is a DC loop powered 4-20ma current. The viscosity output is
calibrated for 4mA (0 cP) and 20mA (160 cP). The temperature output is calibrated for
4mA (0°C) and 20ma (70°C).
Wire
Signal Type
Signal Variable
Max Load
Range
Wht
4-20 mA
Viscosity
600 ohms
0-160 cP
Blk
Gnd
Wht
+12-30 VDC
Temperature
600 ohms
0-70°C
Blk
4-20mA
Note: The instrument is tested and calibrated at the factory before shipment, but it is
recommended that the calibration is checked before first use. See the
Maintenance Section of this manual for calibration instructions.

SECTION 2 –OPERATING INSTRUCTIONS 2-1
Section 2 –Operating Instructions
TestPreparation
1. Locate the Instrument on a level surface and make all fluid and power connections.
2. Turn the instrument ON (Green LED will be on).
Note: Turning ON the instrument power will automatically zero the encoder.
Therefore, the fluid input valve should be closed and no fluid should be flowing
through the instrument.
3. When ready to take measurements, open fluid inlet valve and turn on motor switch.
Note: The red LED light, if on, indicates a fault with the motor controller.
TestCompletionand Clean-up
1. Circulate clean water through the viscometer to flush out treatment fluid.
2. Drain all fluid from the viscometer.
3. For good measurement practice, the viscometer should be hand cleaned after every use.
First, disconnect the encoder cable and unthread the large coupling nut to remove the
measurement head.
4. Carefully remove the measurement head.
Note: The measurement head has an O-ring seal and will be tight during removal.

2-2 SECTION 2 –OPERATING INSTRUCTIONS
5. Carefully wipe dry the inside of the viscometer and the bob.
6. Reinstall measurement head onto viscometer.

SECTION 3 –MAINTENANCE 3-1
Section 3 - Maintenance
Cleaning
1. Drain all fluid from the viscometer.
2. For good measurement practice, the viscometer should be hand cleaned periodically to
remove fluid contamination. First, disconnect the encoder cable and unthread the large
coupling nut to remove the measurement head.
3. Carefully remove the measurement head.
Note: The measurement head has an O-ring seal and will be tight during removal.
4. Carefully wipe dry the inside of the viscometer and the bob.

3-2 SECTION 3 –MAINTENANCE
5. Unthread the retaining nut and pull bob assembly out of measurement head. The bob
assembly is held magnetically.
Caution: Do not place the bob assembly near magnetic materials because of the
strong magnets.
6. Clean and wipe any residue from the bob assembly. Be careful not to scratch the bob or
shaft as this will cause measurement error. Flush the internal cavity of the assembly and
use a nylon pipe cleaner, if necessary, to clean all residue.
7. Reinsert the bob assembly into the measurement head and tighten the plastic nut.
8. Before installing the measurement head back onto the viscometer, clean the vessel with a
hose to remove any remaining fluid. Clean and wipe interior surface of rotor to remove
any residue. If required, the rotor assembly can be removed for further cleaning. First
unthread the coupling nut for the motor.

SECTION 3 –MAINTENANCE 3-3
9. After cleaning rotor assembly, reinstall into viscometer using threaded nut.
10. Reinstall measurement head onto viscometer and connect encoder cable.
Calibration
Checking Calibration
1. Calibration should be checked prior to every use with a known clean calibration fluid,
preferably, use a 100cP calibration oil.
2. First, plug or close off inlet to the viscometer. Fill viscometer with the calibration
fluid from the outlet of the viscometer using a 6” standpipe to ensure that the
instrument is completely full of fluid.
3. Connect instrument to 12 VDC power source and turn on power to instrument.
4. Turn motor on and check viscosity against the known value. Viscosity should read
within 2cP of the known value. (Lightly tapping on the viscometer will improve the
measurement.) Generally, a large error in reading may indicate something is
mechanically wrong with the instrument.
5. Drain the calibration fluid from the viscometer and clean, if necessary.
AdjustingCalibration
1. Fill viscometer with 100cP calibration fluid.
2. Check level and adjust as required.
3. Supply 12 VDC to viscometer electronics.
4. Turn on power to the viscometer.
5. Turn on the Motor Run switch.
6. Check viscosity against the calibrated value.
7. Turn off Motor Run switch
8. Remove the top cap on the viscometer.

3-4 SECTION 3 –MAINTENANCE
9. Loosen the set screws holding the spring mandrel.
10. Turn the mandrel clockwise to decrease viscosity and counterclockwise to increase
viscosity.
11. Tighten set screws (Note the spring assembly may need to be turned
counterclockwise by hand to position the encoder against the zero stop prior to
tightening. The viscosity should read near zero)
12. Turn power off/on to zero the encoder.
13. Turn on motor switch and observe viscosity.
14. Repeat process as necessary.

SECTION 3 –MAINTENANCE 3-5
Torsion Spring Assembly
The Flow-Thru Viscometer uses a standard F1 spring assembly.
Replacementof SpringAssembly
1. Unthread top cap and loosen set screws at the top of the brass spring clamp.
2. Remove screws from spring housing and remove spring housing.
3. Loosen set screws along top row of spring holder and remove spring.
4. Install new spring and reassemble. Recalibrate.

3-6 SECTION 3 –MAINTENANCE
Encoder Assembly
ReplacementoftheEncoder/Bearings
1. Remove screws at the top of the measurement head. Carefully, remove the
encoder/spring assembly from the measurement head. The encoder/spring assembly is
sealed with an O-ring.
2. With the encoder mechanism exposed, the assembly must be handled carefully to avoid
damage to the components. Use caution when handling the assembly due to the strong
magnets.
3. Remove the two screws holding the encoder reader to the underside of the cap. Caution,
the mag drive will attract the screwdriver.

SECTION 3 –MAINTENANCE 3-7
4. Unthread top cap and loosen set screws at top of spring assembly.
5. Remove screws from spring housing and remove spring housing.
6. Loosen set screws along the bottom of the spring holder and remove from shaft.
7. Remove the mag drive from the bearings.
8. Remove bearing retainers from each end of the housing and push out bearings. Check
bearings for friction by lightly spinning by hand. The bearings should spin freely.
Replace any bad bearings.
Caution: Bearings must be clean and dry. Do not oil or allow bearings to come into
close contact with magnets, as this will magnetize the bearings, and ruin
them.

3-8 SECTION 3 –MAINTENANCE
9. The encoder can be removed from the mag drive shaft by loosening the 2 screws.
10. Reassemble and recalibrate.