Ametek 7550 Operating Manual

Model 7550

High Temperature

High Pressure Viscometer

Operating Manual

Rev J – August 2019

P/N: 7550-1050

S/N _____________

2001 N. Indianwood Ave.

Broken Arrow, Oklahoma 74012 U.S.A.

Tel: [phone] Fax: [phone]

E-mail: [e-mail]

Web: www.chandlereng.com

Copyright © 2016, by Chandler Engineering Company, LLC
P.O. Box 470710, Tulsa, Oklahoma 74147
All rights reserved. Reproduction or use of contents in any manner is prohibited without express permission from AMETEK Chandler Engineering Company,
LLC. 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: AMETEK, 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

Purpose and Use............................................................................................................................ P-1

Description of Instrument ............................................................................................................. P-1

Features and Benefits .................................................................................................................... P-2

Specifications ................................................................................................................................ P-3

Safety Requirements ..................................................................................................................... P-5

Symbols Used on Equipment ........................................................................................................ P-6

Where to find help ........................................................................................................................ P-7

Section 1 – Installation ................................................................... 1-1

Unpacking the Instrument .............................................................................................................. 1-1

Utilities Required ........................................................................................................................... 1-1

Equipment Required ...................................................................................................................... 1-1

Setup Instructions .......................................................................................................................... 1-2

Software Setup ............................................................................................................................... 1-2

Software Installation ...................................................................................................................... 1-3

Minimum PC Requirements ....................................................................................................... 1-3

Installation Procedure ................................................................................................................. 1-3

Serial Hub USB Driver Installation Procedure ........................................................................... 1-4

Section 2 – Operating Instructions .................................................. 2-1

Front Panel Controls ...................................................................................................................... 2-1

Power .......................................................................................................................................... 2-1

Pump ........................................................................................................................................... 2-1

Vessel .......................................................................................................................................... 2-1

Heater .......................................................................................................................................... 2-2

Pressure Gauge............................................................................................................................ 2-2

Pressure Release Valve ............................................................................................................... 2-2

Temperature and Pressure Controllers ........................................................................................ 2-2

Operational Guidelines .................................................................................................................. 2-2

Sample Volume ................................................................................................................................ 2-3

Vessel Disassembly .......................................................................................................................... 2-3

Vessel Assembly .............................................................................................................................. 2-8

Preparing to Pressurize and Heat the Sample ................................................................................... 2-12

Starting a Test ................................................................................................................................ 2-12

Test Preparation ....................................................................................................................... 2-12

Automated Instrument Operation ........................................................................................... 2-14

Software Operation Notes ................................................................................................................ 2-16

Schedule Entry Tab .................................................................................................................. 2-16

Preferences ............................................................................................................................... 2-23

Rheological Models ......................................................................................................................... 2-25

Ending a Test ................................................................................................................................. 2-26

Instrument Calibration ..................................................................................................................... 2-27

Calibration Overview ............................................................................................................... 2-27

T-2 TABLE OF CONTENTS

System Linearity ....................................................................................................................... 2-28

Slope ......................................................................................................................................... 2-28

Intercept .................................................................................................................................... 2-28

Hysteresis .................................................................................................................................. 2-28

Standard Deviation .................................................................................................................. 2-29

Maximum Hysteresis................................................................................................................ 2-29

Typical Hysteresis Curve ......................................................................................................... 2-29

Calibration Procedure.............................................................................................................. 2-29

Calibration Summary ............................................................................................................... 2-30

Section 3 - Maintenance and Servicing .......................................... 3-1

Tools Required ............................................................................................................................... 3-1

Cleaning and Service Tips ............................................................................................................. 3-1

Controller Calibration and Configuration Procedure ..................................................................... 3-1

High Pressure Diaphragm Valve ................................................................................................... 3-4

Rupture Disk .................................................................................................................................. 3-5

High Pressure Transducer .............................................................................................................. 3-5

Pivot Bearing and Pivot ................................................................................................................. 3-7

Heating / Cooling Jacket ................................................................................................................ 3-7

Pressure Vessel .............................................................................................................................. 3-8

O-rings and Backup Rings .......................................................................................................... 3-8

Sample Cup .................................................................................................................................... 3-9

Thermowell ................................................................................................................................. 3-9

Magnetic Drive .............................................................................................................................. 3-9

Inner Magnetic Rotor .................................................................................................................. 3-9

Outer Magnetic Drive Rotor ..................................................................................................... 3-10

Encoder Assembly ....................................................................................................................... 3-10

Supply Containers ........................................................................................................................ 3-12

Internal Regulator Pressures ........................................................................................................ 3-13

Motor Drive Belt and Stepper Motor ........................................................................................... 3-14

Pump and High Pressure Valves .................................................................................................. 3-15

Instrument Voltage Selection....................................................................................................... 3-16

Instrument Circuit Breakers ......................................................................................................... 3-17

Instrument Solenoid Valves ......................................................................................................... 3-17

Section 4 - Troubleshooting Guide ................................................. 4-1

Rheology Equations ....................................................................................................................... 4-2

Section 5 – Replacement Parts List ................................................ 5-1

Section 6 – Drawings and Schematics ............................................ 6-1

General Information

Figure 1 - Model 7550 HPHT Viscometer

PREFACE P-1

Purpose and Use

The Model 7550 high pressure high temperature (HPHT) couette viscometer is designed for
determining the rheology of well completion fluids under varying conditions in accordance
with applicable API and ISO standards.

Description of Instrument

The shear stress created between a stationary bob and rotating rotor is measured using a
precision torsion spring and high-resolution encoder. Known sample shear rates are created
between the bob and rotor using defined bob/rotor geometry and a stepper motor sub-system
providing rotational speeds ranging from 0 – 600 rpm. Suspended solids in the sample are
circulated during a test using a helical screw on the outside diameter of the rotor.

The sample viscosity is determined as the ratio of shear stress (dyne/cm2) to shear rate (sec-1)
resulting in dyne-sec/cm2, otherwise expressed as Poise.

These measurements are made at sample conditions ranging from 0 - 30000 psi (207 MPa),
and 32°F - 500°F (0°C - 260°C). A chiller is a separate option.

The system is controlled using a program that provides data acquisition, multi-axis data
display options and automatic instrument operation and calibration features.

P-2 PREFACE

Features and Benefits

The major features of the Model 7550 HPHT Viscometer are listed below:

 Viscometer meets applicable API and ISO requirements
 Bench-top instrument
 Data acquisition and control system
 Automatic control of sample temperature and pressure using PID controllers
 High pressure (30000 psi, 207 MPa), high temperature (500°F, 260°C) sample testing
 Mixing of sample during test using helical screw on outside diameter of rotor
 Automatic control of instrument, including data collection, shear rate scheduling, power-

law model coefficients (n’ and K’), display and calibration

 Automatic 10 second and 10 minute gel strength measurements
 Sample wetted parts made from stainless steel and other corrosion resistant high strength

materials

 Stepper motor and magnetic drive used to generate shear rates, providing high accuracy

and stability

 High resolution measurement of shear stress
 Safety systems designed into the instrument and software (over-pressure, over-

temperature)

 Microsoft Excel compatible data output

Specifications

Instrument Utilities:

 Main Power: 208-240 VAC, 50/60Hz, 10A maximum
 Instrument Air or N2: 150 psi, 1034 kPa ±10% (filtered and dry)
 Coolant: Water

Sample Environment:

 Maximum Pressure: 30000 psi, 207 MPa
 Maximum Temperature: 500˚F, 260˚C
 Minimum Temperature: 32˚F, 0˚C

Sample Rheology:

 Minimum Shear Stress: 2.0 dyne/cm2
 Maximum Shear Stress (approximate, varies with spring assembly):

 Shear Stress Resolution: ±0.02% of F.S. (encoder resolution 2:10000)
 Motor Speed Range: 0.001– 600 RPM
 Shear Rate Range: .0017 – 1022 sec-1, corresponding to 1 – 600 RPM (B1/R1)
 Sample Gel Strength: Peak value at 3 RPM

PREFACE P-3

 F4: 6000 dyne/cm2
 F2: 3000 dyne/cm2 (Standard)
 F1: 1500 dyne/cm2

Couette Geometry:

 Bob Radius (Ri): 1.7245 cm (B1) – other bobs are available, contact Chandler Engineering
 Rotor Radius (R0): 1.8415 cm (R1)
 Bob Length (L): 3.805 cm (B1)
 Sample mixing via helical screw on OD of rotor with circulation ports in rotor and bob. A

rotor without the helical mixing option is available.

Pressure Vessel:

 Removable sample plug assembly with support stand
 Sample/Oil separation zone
 High pressure magnetic drive for rotor
 High strength, corrosion resistant superalloy construction
 High pressure pressure ports (F250C), knurled nuts and wrench flats
 Elastomer with metal backup seals
 Material heat traceability, hydrostatically tested to 1.5x rated pressure (45000 psi, 310 MPa)

Test Fluids:

 Well completion fluids containing hematite, barite, calcium carbonate

P-4 PREFACE

Torque Measurement System:

 External cooled torque sensor, magnetically coupled to bob shaft

Motor System:

 Stepper motor subsystem

Temperature Control:

 Programmable PID Controller
 Resistance heaters with contactor and redundant over-temperature protection
 Temperature steady-state control stability: ±2˚F, ±1˚C
 J-type thermocouple located on centerline of bob and within cast heater

Pressure Control (Pump and Valve):

 Programmable PID Controller
 Air/Liquid Pump
 Diaphragm operated high pressure valve and flow restriction
 Pressure control stability: ±500 psi at F.S.
 Pressure transducer
 High pressure rupture disk (31000 psi, 214 MPa)
 Pressurizing fluid: heat transfer fluid

Control System:

 Microsoft Windows based program providing the following:

o Temperature and Pressure control time-based profiles with data collection inhibits

during temperature and pressure stabilization periods

o Motor RPM (shear rate) time or temperature based profiles providing standard speeds

(600, 300, 200, 100, 6, 3) or other user-defined speeds

o Saved user defined test profiles
o Configurable multiple axis plots of all variables (T, P, Shear Rate, Shear Stress,

Viscosity, Dial Reading, etc.)

o Automatic calibration using Newtonian oil and multiple shear rates
o Serial interface to instrument temperature, pressure, motor controllers
o Data export in CSV format, compatible with Microsoft Excel
o Configurable alarms for maximum shear stress, temperature, pressure
o Pause, Resume, Jump feature for profile steps
o Schedule “wizard” to simplify new schedule creation

Environmental Conditions:

 Pollution degree 2
 Altitude 2000 m
 Humidity 50 to 80%
 Indoor use only
 Temperature 5°C to 40°C (41°F to 104°F)
 The mains supply voltage fluctuations are not to exceed ±10% of the nominal supply voltage

PREFACE P-5

Safety Requirements

READ BEFORE ATTEMPTING OPERATION OF THE INSTRUMENT

The Chandler Engineering Model 7550 HPHT Viscometer is designed with
operator safety in mind. Any instrument that is capable of high temperatures and
pressures should always be operated with CAUTION.

NOTE: If this is equipment is not used in a manner consistent with

manufacturer’s specifications, the protection provided by the equipment
may be impaired.

WARNING: Read before attempting operation of instrument. This instrument is

capable of extremely high temperatures and pressures and must always
be operated with CAUTION. The instrument is designed for operator
safety. To ensure that safety it is essential to follow the instructions
outlined below.

WARNING: During a test, the top panel around the test cell can become hot and

cause injury.

WARNING: Remove oil from surfaces prior to conducting tests at high temperatures

to avoid the possibility of creating fumes. The instrument should be
mounted under a vent hood, or equivalent ventilation, if sample
temperatures will be above 400°F, 204°C for extended time periods.

WARNING: The instrument is calibrated with known viscosity silicone oils, do not

expose these oils to temperature above ambient to avoid thermal
decomposition of the silicone oil that may form dangerous fumes.

NOTE: The instrument must be mounted under a vent hood, or equivalent ventilation, if

sample temperatures will be above 400°F, 204°C for extended time periods.

To further ensure safety:

 Provide adequate training of all personnel that will operate the instrument.
 Locate the instrument in a low traffic, well-ventilated area.
 This is a bench top device; place the instrument on a suitable level and stable surface.

Allow a minimum of 5-inches (127mm) unobstructed clearance around the instrument
to provide adequate ventilation.

 Post signs where the instrument is being operated to warn non-operating personnel

that high pressure, high temperature equipment is in use.

 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 temperature and pressure ratings.
 Always disconnect main power to the instrument before attempting any service or

repair.

 Turn OFF the heater at completion of each test.
 Remove oil on heated surfaces that may pose a hazard prior to starting a test that will

exceed 400°F, 204°C.

 Although the pressure vessel was designed using suitable materials and techniques,

due to the extreme pressure rating, it is imperative to monitor the condition of the

P-6 PREFACE

Symbol

Meaning

bef

ore servicing.

 Note that AMETEK Chandler Engineering recommends periodic re-inspection and

 A fire extinguisher, type 8 BC, should be located within 50 feet (15

 Have the safety officer at your location or laboratory review the safety aspects of the

Before attempting to operate the instrument, the operator must read and
understand this manual.

vessel and related components with a focus on safety. Any damage to the vessel or
related high pressure components must be brought to the attention of Chandler
Engineering.

testing of the pressure vessel assembly to maintain the rated temperature and pressure
ratings. Without re-inspection and testing, the pressure rating of the vessel assembly
must be de-rated as a function of age, usage and condition in accordance with
established vessel de-rating schedules at Chandler Engineering. Chandler
Engineering supports the design and offers periodic vessel testing services and
component replacement if/when required.

meters) of the instrument.

instrument and installation and approve the operational and installation procedures.

Symbols Used on Equipment

Protective Conductor
Terminal

Caution, risk of electric
shock. Equipment may be
powered by multiple
sources. Disconnect
(Lock-out) all services

Caution, hot surface. Do
NOT touch. Allow to cool
before servicing.

On (Power)

Off (Power)

PREFACE P-7

Where to find help

In the event of problems, the local sales representatives will be able to help or the
personnel at Chandler Engineering can be contacted.

 Telephone: [phone]
 FAX: [phone]
 E-mail: [e-mail]
 Website: www.chandlereng.com

P-8 PREFACE

This page is intentionally left blank.

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 any spare parts that were ordered with the unit. Make sure
that no parts or tools are lost when discarding the packing materials. Place the instrument on
a firm table, close to the coolant and air sources and required electrical outlet.

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.

SECTION 1 – INSTALLATION 1-1

Utilities Required

 Main Power to Instrument: 208-240 VAC, 50/60 Hz, 10A maximum.
 A suitable uninterruptible power supply is recommended to prevent data loss during a

power failure.

 Coolant: Clean water
 Optional Chiller subsystem
 Drain: Suitable for steam

 Air or Nitrogen: Filtered, dry; 75-150 psi, 517-1034 kPa.

NOTE: To achieve 30000 psi, 207 MPa using the internal pump, a supply of at

least 130 psi, 900 kPa Air or Nitrogen is required.

Equipment Required

 Set of English open-end wrenches
 Set of English size hex wrenches (supplied with instrument)
 Solvent based parts cleaning equipment
 Mounted bench vise

1- 2 SECTION 1 - INSTALLATION

Warning:

Verify that the proper input voltage is applied

Setup Instructions

READ BEFORE ATTEMPTING OPERATION OF INSTRUMENT

1. Locate the instrument near power, air, water, and drain connections.

2. Level the instrument by adjusting the legs under the instrument. A bubble level is

provided on the top panel of the instrument. Place the bubble on the top of the vessel
when leveling the instrument. This approach ensures that the bob shaft is vertical.

3. This instrument requires 208-240VAC.

before connecting power (220 VAC).
Damage can occur if the wrong line voltage is applied, verify

that the proper input voltage is applied. To prevent shock
hazard, connect the instrument to an electrical outlet using a
three-prong socket to provide positive ground.

4. Connect power to the instrument using the power cord supplied with the instrument. All

power and grounding must be consistent with local wiring codes.

5. The power plug may need to be changed if the local receptacle is incompatible with the

plug supplied with the instrument.

6. Connect the Air (or N2), Coolant, and Vent connections to the instrument. The coolant

outlet connection must be rated for high temperature steam.

7. The Vent port is connected to the rupture disk discharge. If the rupture disk fails,

potentially hot fluid will discharge from this port. Route the discharge from this port to a
safe location.

8. An additional Exhaust port is used to discharge low pressure air during valve switching.

Discharge from this port may include oil mist. Route the discharge from this port to a
safe location.

Software Setup

1. Leave computer off until instructed to turn it on. This will ensure proper installation of

drivers later in the process.

2. Install the USB serial port hub by connecting the USB cable from the hub to the PC, and

connecting the two (2) supplied Serial Communication Cables from the hub to the
Viscometer:

 Connect USB hub serial port S1 or Port 1to DATA serial port (the top serial

connection provides serial communication to the System I/O and temperature
controller.)

 Connect USB hub serial port S2 or Port 2 to MOTOR serial port (the bottom serial

connection provides serial communication to the motor controller.)

3. Connect the power cable.

SECTION 1 – INSTALLATION 1-3

Software Installation

The Model 7550 viscometer is operated remotely via PC serial interface, using the
Rheo7500 software.

If the Model 7550 viscometer is ordered with a computer, the software will be
pre-installed on the computer, and it is only necessary to click the Rheo7500 icon
on the desktop to start the software.

Alternatively, the software can be installed on a user’s computer following the
procedure.

Minimum PC Requirements

 Microsoft Windows XP or Windows 7 Operating System
 1 GB RAM
 2 RS232 Ports (via USB HUB or direct connection)
 1024 X 768 Display Resolution or higher
 CD-ROM/DVD Drive (for software installation, data backup)

Installation Procedure

1. Turn on the computer.

2. Insert the Rheo7500 CD into the CD drive of the computer. Run the Setup.exe file from

the root folder on the CD (double-click it).

3. The “Preparing to Install” window will appear. Read the information and Click “Next”

to continue.

4. The “Install Shield Wizard” window will appear. Read the information and Click “Next”

to continue.

5. The “License Agreement” window will appear. Read the information, click “I accept” if

you accept the terms of the agreement, and wish to continue installation. Click “Next” to
continue.

6. The “Customer Information” window will appear. Fill in your Username and Company

Name. Click “Next” to continue.

7. The “Ready to Install” window will appear. Verify the information and Click “Install” to

continue or “Back” to make a change.

8. The “Installing Rheo7500” window will appear showing installation progress.

9. When installation is complete, the screen below will appear. Click “Finish” to exit the

installer.

10. Proceed to the Driver installation procedure.

1- 4 SECTION 1 - INSTALLATION

Serial Hub USB Driver Installation Procedure

1. Install the driver for the Rocketport or Edgeport serial hub on the CD

2. Follow the on-screen instructions to install the device driver.

3. Right-Click on “My Computer” and select “Properties.”

4. Select the “Hardware” tab and “Device Manager” to determine the COM port

assignments. They will be needed during software configuration.

5. Click on the Rheo7500 icon to start the software.

6. From the manager screen, click “File” then “Open Instrument” and select the instrument

(usually SNxxx.ini) - "xxx" = instrument serial number

7. In the instrument window, select the “Setup” tab.

8. Select “Communication Settings,” “7550 Serial Ports,” “I/O, Pressure & Temperature

Control”. Assign the COM port that is used with the pressure and temperature control

9. Select “Communication Settings,” “7550 Serial Ports,” “B Motor Controller”. Assign the

COM port that is used with the motor control.

10. Verify that values on the temperature and pressure controllers are indicated on the main

screen user interface.

11. Verify that the motor may be controlled in manual mode.

12. The instrument is now ready to calibrate.

The instrument is tested and calibrated at the factory before
shipment, but it is recommended that it be re-calibrated before its
first use.

SECTION 2 – OPERATING INSTRUCTIONS 2-1

Section 2 – Operating Instructions

Front Panel Controls

Figure 2 - Front Panel Controls

Power

Controls the main power to the instrument.

Pump

ON: Provides manual control of the internal pump
OFF: Disables the internal pump

AUTO: Controller provides pressure control of the pump

Vessel

FILL: Fills the pressure vessel with pressurizing fluid from the right-front supply

bottle

OFF: Vents the low pressure air or nitrogen to the supply vessel

DRAIN: Drains the pressurizing fluid from the pressure vessel once the pressure release

valve is open.

2-2 SECTION 2 – OPERATING INSTRUCTIONS

Heater

ON: Enables the heater
OFF: Disables the heater

Pressure Gauge

The instrument is equipped with a 30000 psi, 207 MPa pressure gauge in addition to the
internal pressure transducer.

Pressure Release Valve

The pressure release valve must be closed for pressure to build inside the vessel. When
opened, pressure is released from the vessel and the fluid drains to the rear bottle located
at the right-rear of the instrument.

Temperature and Pressure Controllers

The instrument is equipped with two controllers that are interfaced to the computer based
software. Each controller may be enabled / disabled by pressing the EZ1 button.

Operational Guidelines

 Thoroughly clean vessel components and threads after each test.
 Replace top cap and plug o-rings at the first sign of wear. These o-rings must be

discarded after each test that exceeds 450°F. Use the FFKM o-rings when the sample
temperature will exceed 450°F. Below this temperature the FKM o-rings may be
used.

 Routinely inspect the pivot bearing and pivot, replacing if the instrument sensitivity

has diminished.

 Routinely inspect the bushing that is located below the rotor, replacing as needed.
 Routinely inspect the o-rings (2) that are used on the sample cup baffle, replacing as

necessary. Note that neglecting these o-rings will result in contamination of the
sample, pressurizing oil and incorrect results.

 Assemble the plug assembly without sample. Verify that bob and spring assemblies

move freely, and the top pivot is supported by the top clip. Verify that the top pivot
does not extend beyond the top clip.

 Mount the plug assembly in the vessel.
 Mount the top seal ring and o-ring (FFKM or FKM) and screw the top cap into place.
 Attach the high-pressure interconnection tube.
 Mount the encoder and attach cable and cooling air tube.
 Zero the encoder electronics.
 Open the pressure release valve.
 Operate the motor at 50 rpm, use the syringe adapter and luer-tip syringe to slowly fill

the sample cup with 110 mL of sample.

 In cases where the sample viscosity is excessive, zero the encoder, remove the plug

assembly and fill the sample cup with 80 mL of sample. Replace the plug assembly
and encoder, noting that the encoder reading may indicate a positive deflection due to
the gel strength of the sample.

 Use the syringe adapter and luer-tip syringe to slowly fill the sample cup with 30 mL

of sample.

 Remove the syringe adapter and install the high-pressure plug.

Sample Volume

The sample is pressurized with an inert mineral oil. To eliminate frictional effects, seals
are not used to separate the sample from the mineral oil. The oil/sample interface exists
within the plug above the sample volume. During use, provided the interface remains
within the plug, mixing of the oil and sample does not occur.

During a test over a range of temperatures and pressures it is important to be aware of
sample PVT characteristics. In other words, the sample volume varies with pressure and
temperature.

The volume of the sample cup below the plug is 100 mL. The 7500 Viscometer is
designed with adequate volume in the plug needed for changes in sample volume during
a test.

At no time during a test can the mineral oil exceed the 100 mL sample volume since this
will cause incorrect measurement results.

SECTION 2 – OPERATING INSTRUCTIONS 2-3

A sample fill volume of 105 - 110 mL is satisfactory in most cases. Other cases
involving sample volumes that change more than 10% as a function of temperature and
pressure (increasing or decreasing) during a test may require adjustment of the starting
sample volume.

The sample volume up to the level of the front fill port may be determined using the
syringe adapter and syringe. With the plug assembly mounted on the stand, fill the plug
assembly with water using a 60mL syringe. The sample volume is determined when it is
apparent that the water level is level with the fill port.

Figure 3 – Sample Injection

Vessel Disassembly

1. Remove the encoder assembly, disconnecting the cable and air-cooling tube.

2. Disconnect the high-pressure tube between the top cap of the vessel and the top panel

of the instrument. The nuts on each end of the tube require a 5/8-inch open-end
wrench.

2-4 SECTION 2 – OPERATING INSTRUCTIONS

3. Unscrew the top plug assembly from the vessel. The plug is loosened by turning

counterclockwise.

4. Once the plug assembly is removed, place the assembly in the plug support bracket.

Figure 4 - Plug Assembly in Stand

5. Remove the top cap, rotating counterclockwise. Remove the top o-ring and metal

backup ring. You may use the Seal Extractor tool 7500-2292, when necessary.
Replace the o-ring after each high temperature test.

Plug Assembly

Plug Support
Bracket

HP O-ring and
HP Backup Ring

SECTION 2 – OPERATING INSTRUCTIONS 2-5

Tool

Figure 5 - Removal/Installation of Top Seals

Seal Extractor

6. Secure pivot by hand or remove before inverting the sample cup. Unscrew and

remove the sample cup, rotating clockwise. Secure the pivot by hand or remove
before inverting the sample cup (see Figure 10). While supporting the rotor assembly
inside the sample cup, empty the sample from the cup into a suitable disposal
container.

Sample cup

Figure 6 – Removal/Installation of Sample Cup

7. Invert the sample cup and remove the internal rotor and magnet assembly.

8. Note that the rotor support bearing may become unseated and may be retained by the

rotor magnet.

9. Use tool 7500-2204 to retain the bob shaft and unscrew the bob by hand, rotating

clockwise. Note that the tool engages the groove in the baffle.

10. Secure the tungsten carbide insert. It can easily drop out if the bob is inverted (see

2-6 SECTION 2 – OPERATING INSTRUCTIONS

Head Screw

Section 3 – Maintenance and Servicing).

Figure 7 - Bob Removal Tool Installed

11. Remove the hex socket head screw from the shaft clip. Remove the spring module

assembly from the plug.

Hex Socket

Clip, Shaft

Figure 8 - Removal/Installation of Spring Module

12. Invert the plug and remove the hex socket head screws (4) and remove the baffle and

o-ring located between the baffle and plug and sample cup threads. Discard and
replace the baffle o-rings (2) as needed to ensure separation between the pressurizing
oil and sample.

13. Remove the high-pressure seal o-ring and metal backup ring. Discard and replace the

o-rings after each high temperature test.

14. Remove the high-pressure gland and plug from the front of plug assembly using a

5/8-inch open end wrench.

15. Carefully and thoroughly clean all parts using a solvent tank in preparation for re-

assembly. Rinse all parts with water. Dry all parts thoroughly.

Bob Shaft
Tool

Top Pivot
Spring Module
Assembly

Baffle
O-ring

SECTION 2 – OPERATING INSTRUCTIONS 2-7

Sample cup
O-ring

HP Backup
ring

HP O-ring

Figure 9 – Removal/Installation of Baffle and Seals

2-8 SECTION 2 – OPERATING INSTRUCTIONS

Vessel Assembly

1. Use tool 7600-1160 to seat the support bearing in the rotor. Retain the bearing in

place inside the rotor by applying a small amount of grease prior to assembly.
Alternately, place the bearing on the thermowell; it will rest inside the rotor when the
rotor assembly is inserted into the sample cup.

2. Install the bushing in the bottom of the rotor assembly. Verify that it is not

excessively worn.

Bearing Extraction Tool

Figure 10 - Rotor Bearing and Outer Race Installation

3. Insert the rotor and magnet assembly into the sample cup. Verify that the rotor

bearing rests on the top of the thermowell and the pivot extends through the bearing.
Verify that the rotor rotates freely.

SECTION 2 – OPERATING INSTRUCTIONS 2-9

P

ivot

Figure 11 - Sample Cup with Rotor Installed, Ready to Fill with Sample

4. Install the baffle o-ring between the baffle and plug and at the root of the sample cup

threads. Mount the baffle. Tighten the hex socket screws (4).

5. Position the plug assembly upright in the support bracket.

6. Assemble the spring module, adjusting the spring and magnet assembly to ensure that

the dowel pin is positioned properly (see Section 3 – Maintenance and Servicing).

7. Insert the spring module assembly into the top of the plug.

8. Mount the shaft clip and hex socket head screw.

Top Pivot
Spring Module

Figure 62 - Installation of Spring Module

2-10 SECTION 2 – OPERATING INSTRUCTIONS

Figure 13 - Installation of Spring Module

9. Mount the bob assembly to the bob shaft. Gently tighten the bob on the shaft, using

the bob tool.

NOTE: Excessive tightening may bend the bob shaft.

10. Apply a small amount of anti-seize compound to the threads on the sample cup.

11. While empty, screw the sample cup onto the baffle. Verify that the center magnet

assembly elevates slightly as the sample cup is screwed into place.

12. Verify that the pivot pin passes through the shaft clip as the sample cup is mounted.

NOTE: The pivot must not extend past the top of the clip to avoid interference

with the top cap. The limit stop dowel pin and magnets must not contact
the supporting housing or shaft clip while rotating.

13. The center pivot may be axially positioned to position the magnet support housing

assembly on the bob shaft. This may be accomplished by removing the spring
module and bob shaft and screwing or unscrewing the pivot using needle-nose pliers.

14. Verify that the magnet assembly and bob rotate freely against the spring torsion. An

oscillation must be observed when displacing the spring and releasing. If any binding
exists, disassemble, locate the problem and reassemble.

15. Position the top metal backup ring and o-ring.

16. If needed, add a small amount of pressurizing fluid to the top and bottom elastomeric

seals.

17. Insert the plug assembly into the pressure vessel. Tighten by turning clockwise.

Screw the plug until lightly shouldering then loosen until the high-pressure port faces
the front of the instrument.

18. Screw the top cap onto the plug. Screw the cap until lightly shouldering then loosen.

The top high-pressure port must face the right of the instrument, aligning with the
high-pressure interconnection tube.

19. Verify that the collars on the high-pressure interconnection tube are fully screwed

onto each end of the tube, noting that they have LH threads.

20. Connect the high-pressure interconnection tube between the top cap and the top panel

of the instrument. Tighten using a 5/8-inch wrench.

Adjustable pivot

- must not extend
past top of clip

Clip, Shaft

Needle Valve

Cooling Air Tube

SECTION 2 – OPERATING INSTRUCTIONS 2-11

21. Mount the encoder to the top of the vessel, aligning the encoder alignment pin with

the groove in the top cap.

22. Connect the encoder cable to the 9-pin connector on the encoder; tighten the retaining

screw(s).

23. Connect the cooling air tube to the encoder. The air flow may be adjusted using the

side mounted needle valve to cool the encoder during long duration high temperature
tests.

24. Using the software Tare button, zero the encoder.

HP Interconnection
Tube

Figure 74 – Encoder and High-Pressure Connections

25. Attach the 7600-1164 syringe adapter to the front high-pressure port on the plug.

Open the pressure release valve.

26. Using a syringe (C10480) inserted into the syringe adapter, slowly fill the plug and

cup assembly with 110mL of sample.

NOTE: The sample cup volume including the B1 bob, R1 rotor and related

27. Remove the 7600-1164 syringe adapter from the front high-pressure port on the plug.

28. Install the high pressure plug into the front high-pressure port on the plug assembly.

Tighten with a 5/8-inch open end wrench. Do not over-tighten the nut (recommended
torque: approx. 25 ft-lbf)

High Pressure Plug

components is 100mL, the total sample volume may need to be increased
based on the PVT characteristics of the sample.

Syringe Adapter

Figure 85 - Sample Injection

2-12 SECTION 2 – OPERATING INSTRUCTIONS

Preparing to Pressurize and Heat the Sample

1. Verify that the supply container (right - front) is at least 1/2-full of the pressurizing

fluid. Only use the fluid part number that is supplied with the instrument. Empty the
collection vessel (right - rear). The supply containers are hand tightened.

2. Once the vessel is closed and the high-pressure tube is connected, open the pressure

release valve, if needed. DO NOT ATTEMPT TO OPERATE THE PUMP UNLESS
THE HIGH-PRESSURE TUBE IS CONNECTED.

3. Turn the Vessel switch to Fill.

4. Operate the pump manually (pump switch ON) until oil is observed filling the rear oil

reservoir. Watch for any leaks as the vessel fills with mineral oil. If a leak is
discovered, turn the vessel and pump switches Off (center position) and correct the
leak.

5. Close the pressure release valve and place the Pump switch in the Auto position.

6. Turn the Heater switch to On.

7. Verify that the temperature and pressure controllers are ready for use. If the

controllers are in the OFF mode, press the EZ1 button once.

8. Mount the encoder on top of the plug assembly; connect the airline to the encoder.

Adjust the air flow to the encoder as needed for an elevated temperature test (>350°F,
177°C)

9. Close the cover over the encoder.

Pressure Release

Starting a Test

Test Preparation

1. Turn the instrument and computer ON. The software is started by clicking the Rheo 7500

icon, located on the desktop or the start menu. The Instrument Manager screen will
appear:

SECTION 2 – OPERATING INSTRUCTIONS 2-13

Figure 16 - Rheo 7500 Instrument Manager Screen

2. From the <File> menu, open a previously created instrument. A splash screen will

appear, followed by the Main Instrument screen. An example is shown below.

Figure 97 - Rheo 7500 Main Screen

3. Set up the schedule to run as desired. See the Automated Instrument Operation section

below for detailed instructions on how to set up a schedule.

2-14 SECTION 2 – OPERATING INSTRUCTIONS

Automated Instrument Operation

This section is intended to provide a brief overview of how to start an automated test.

1. In the “Log File” section of the main screen, specify the log interval between ramps and

during ramps.

2. On the “Parameters” tab, set the desired rotor speed control units and viscosity

stabilization criteria. In the “File Header Information Text Box” enter any desired test
information. This information will be appended to the data file.

3. Verify that the sample is in place and ready for measurement.

4. On the main screen, choose "Automatic" under “Rotor Control” and under “Pressure /

Temperature Control.”

5. Click the “Start Schedule” button.

6. After “Start Schedule” has been selected, the following screen will appear. Click “Yes”

to continue.

7. When “Yes” is selected, the screen below will appear. In the “File Name” box that is

highlighted, enter the desired file name for the test data. When the file name has been
entered, click the “Open” button.

Figure 18 - Rheo 7500 Log File Dialog

SECTION 2 – OPERATING INSTRUCTIONS 2-15

8. If the checkbox in the “Log File Header” section of the “Setup” screen is selected, then

the following screen will appear. If the file header information needs to be changed,
select “Yes.”

Figure 109 - Rheo 7500 File Header Information Dialog

9. When “Yes” is selected, the following screen appears, allowing entry of the header

information. Enter the information in the dialog box, then click “Apply” to proceed with
the test.

Figure 20 - Rheo 7500 Preferences and File Header Editor, degrees F

2-16 SECTION 2 – OPERATING INSTRUCTIONS

Figure 21 - Rheo 7500 Preferences and File Header Editor, degrees C

10. Allow the test to run. The test data may be displayed on the screen during test by

selecting the desired plot from the “Plot” menu.

Software Operation Notes

Schedule Entry Tab

The Rheo 7500 software system allows user-defined schedules for automatic test control.

Schedules are created and edited using the Schedule section of the Setup screen. Cells may be

edited individually. Entire rows and groups of rows may be cut, copied and pasted.

A toolbar at the top of the schedule grid provides the following selections:

 Open Schedule File - Opens a previously defined schedule file.
 Save Schedule As - Saves the current schedule, then creates a copy with a new

filename.

 Cut - Makes a copy of the current selection, then deletes the selection.
 Copy - Makes a copy of the current selection.
 Paste - Pastes the copied selection onto the selected location.
 Undo - Restores the schedule to a previous state.
 Redo - Reverses the Undo action
 Schedule Setup Wizard - Opens the Schedule Setup Wizard Screen (see section

below).

The Apply button in the lower-right corner of this screen automatically performs the
following actions when pressed:

SECTION 2 – OPERATING INSTRUCTIONS 2-17

1. Save the current schedule file.

2. Apply the changes to the working schedule. A schedule may be edited as it is executed.

The changes take effect when the Apply button is pressed.

A popup menu appears when the user presses the right mouse button over the schedule grid
area. A schedule may also be verified visually as it is being edited via the Plot Schedule
Tab.

Each step of a schedule contains the following information:

 Start Time - The relative time from the beginning of the schedule that a step will

begin. This parameter is automatically calculated and updated by the Rheo program.

 Rotor Speed or Shear Rate – Based on the preferences, defines the Rotor Speed or

Shear Rate for a given schedule step.

 Duration - Defines the duration of a given schedule step in minutes.
 T - Defines the set-point of the temperature controller at the beginning of a schedule

step.

 P - Defines the set-point of the pressure controller at the beginning of a schedule step.
 T Ramp Rate - Displays the temperature ramp rate for a given schedule step. This

parameter is calculated and updated automatically by the Rheo 7500 software.

 P Ramp Rate - Displays the pressure ramp rate for a given schedule step. This

parameter is calculated and updated automatically by the Rheo 7500 software.

 Rotor Speed or Shear Rate - Displays the rotor speed or shear rate, based on the

desired shear rate or motor speed.

 Log Model Data – Allows the user to specify which schedule steps are used for

Bingham Plastic and Power Law calculations.

 Log Raw Data – Allows the user to specify whether or not to log and plot data for

any given schedule step.

 Gel Strength – Conducts a gel strength profile defined in the “Gel Strength

Measurements” section in Preferences.

Alternately, a Schedule Wizard will automatically create a schedule based on user input
values.

The Schedule Setup Wizard provides a simple way to set up a standard test. To start the
wizard, select the rightmost button of the toolbar on the Schedule Entry Tab.

Note that a schedule created using the Schedule Setup Wizard may be saved for future use.

Schedules may be edited without the use of the wizard. Schedule steps that are in use may be
edited prior to being executed. Remember to click the Apply button to load the changed
values.

To create a schedule using the wizard simply follow the on-screen instructions.

2-18 SECTION 2 – OPERATING INSTRUCTIONS

Figure 22 - Schedule Set Wizard Introduction

Figure 23 - Schedule Setup Wizard – Parameters

Enter the desired temperatures and pressures for use in the schedule.

SECTION 2 – OPERATING INSTRUCTIONS 2-19

Figure 114 - Schedule Setup Wizard – Parameters

Enter the rotor speeds and durations for each step in the schedule. Enable the Gel
Strength features as needed, the correct schedule steps are automatically inserted
into the schedule file.

Figure 125 - Schedule File Name Dialog

Define the file name for the schedule. Once created, this schedule may be used
repetitively.

2-20 SECTION 2 – OPERATING INSTRUCTIONS

Figure 136 - Schedule Setup Wizard - Completion

SECTION 2 – OPERATING INSTRUCTIONS 2-21

Figure 147 - Schedule Profile

Use the schedule profile to verify the schedule prior to use.

2-22 SECTION 2 – OPERATING INSTRUCTIONS

Figure 158 - Schedule Tabular Data/Editor

Use the schedule editor to create or modify a schedule. Select the Apply button to load the

changes. If the changes are permanent, select the Save button. If the changes are temporary,

select Apply, the previous values will be used next time the schedule is loaded.

SECTION 2 – OPERATING INSTRUCTIONS 2-23

Preferences

Figure 169 - Rheo 7500 Preferences

The Preferences Tab provides the following adjustable User Parameters:

 Power Law n' and K' Units - Defines the units to display the Power Law Model

results, both on the Main Tab and in the Data Log File.

 Bingham Plastic YP and PV Units - Defines the units to display the Bingham

Plastic Model results, both on the Main Tab and in the Data Log File.

 Modeled Shear Rates - The modeled viscosity at each of these shear rates is logged

to the Data Log File for each Rheological Model.

 Maximum Temperature - Defines the temperature at which the "Over Temperature"

alarm will display on the main screen. This value also represents the maximum
allowable temperature entry value for a schedule or manual temperature control.

 Maximum Pressure - Defines the pressure at which the "Over Pressure" alarm will

display on the main screen. This value also represents the maximum allowable
pressure entry value for a schedule or manual pressure control.

 Maximum Shear Stress - Defines the shear stress value at which the "Shear Stress"

alarm will display on the main screen.

 Rotor Speed Control Units - Allows rotor speed to be controlled as rpm or 1/sec.
 Temperature Display Units - Allows the selection of degrees Fahrenheit, Celsius.

This selection applies to the log file, as well as the schedule, alarm limits and any
other place that temperature is displayed. Temperature display units may not be
changed while data is being logged to a file.

2-24 SECTION 2 – OPERATING INSTRUCTIONS

The temperature controller on the instrument may be configured to display degrees
Celsius or Fahrenheit. Refer to the temperature controller manual for details on how
to change the units displayed on the front panel.

 Temperature Stabilization Criteria - When "Advance with Temperature" is

selected within a schedule, and the measured sample temperature reaches a value
within this specified tolerance (increasing or decreasing temperature), the schedule
execution will advance to the next schedule step.

 Pressure Display Units - Allows the selection of PSIg or KPSIg. This selection

applies to the log file, as well as the schedule, alarm limits and any other place that
pressure is displayed. Pressure display units may not be changed while data is being
logged to a file.

 Viscosity Stabilization Criteria - Viscosity stabilization refers to the stabilization of

measured Shear Stress that occurs after a change in Shear Rate. See Bingham Plastic
and Power Law Calculations for more information on how this feature is used. The
user defines the length of the stabilization period.

 Schedule Shear Rate Acceleration - when this value is set to zero, the Accel field on

the Main Tab overrides it. If a higher value is selected, each shear rate change within
a schedule will utilize the specified period to provide a smooth, linear change in rotor
speed. The initial acceleration (acceleration to the rotor speed prescribed by the first
schedule step) always uses the acceleration value specified in the Accel field of the
Main Tab.

 File Header Information - Information to be included at the top of each data log file

is entered here.

 Modeled Shear Rates – Calculates Rheological data at the user specified inputs.

Figure 30 - Rheo 7500 Jump/ Pause / Play Features

During the execution of a schedule, operation of the instrument may be
Paused or Jumped. This feature is useful to pause the schedule and resume
by selecting the Play button. Alternately, a schedule step can be “jumped”
either forward or backwards in the schedule.

Pause

Jump

Play

SECTION 2 – OPERATING INSTRUCTIONS 2-25

Rheological Models

The Rheo 7500 software system automatically calculates values for the following
rheological models:

1. Bingham Plastic Model - The Bingham Plastic Model is expressed as:

τ = YP + PV(γ)

Where:

τ = Shear Stress

YP = Yield Point

PV = Plastic Viscosity

γ = Shear Rate

For these calculations, the Rheo 7500 software automatically collects data at a
rate of 1 sample per second for each desired schedule step. The average of this
data is calculated for each schedule step and applied to the following formula:

PV = ((Σγ

YP = ( (Σγ

* Στ

avg

avgτavg

) - (N * Σγ

avg

* Σγ

avg

) - (Στ

avgτavg

* Σγ

avg

)) / ((Σγ

²))/((Σγ

avg

)² - (N * Σγ

avg

)² - (N * Σγ

avg

avg

²))

avg

²))

Where:

γ

= Average Shear Rate for an individual schedule step

avg

N = Number of schedule steps

The accuracy of the model is expressed as:

R² = 1 - (Σεi²/(Σγ

avg

² - (Σγ

)² / N)

avg

Where εi represents the difference between the measured shear stress and the
calculated shear stress using the Bingham Plastic equation τ = YP + PV(γ) for
schedule step i.

For a perfect model, R² = 1.

2. Power Law Model - The Power Law Model is expressed as:

τ = K * γn

Where:

τ = Shear Stress

2-26 SECTION 2 – OPERATING INSTRUCTIONS

= Average Shear Stress for an individual schedule step during the

K = Consistency

n = Power Law Exponent

γ = Shear Rate

For these calculations, the Rheo 7500 software automatically collects data at a
rate of 1 sample per second for each desired schedule step. The average of this
data is calculated for each schedule step and applied to the following formula:

n = ((ΣLog10(γ

((ΣLog10(γ

avg

K = 10^( (ΣLog10(γ

ΣLog10(γ

avg

) * ΣLog10(τ

avg

))² - (N * ΣLog10(γ

)Log10(τ

avg

)²))/((ΣLog10(γ

avg

)) - (N * ΣLog10(γ

avg

)²))

avg

) * ΣLog10(γ

avg

avg

))² - (N * ΣLog10(γ

)Log10(τ

avg

)) - (ΣLog10(τ

)²))

avg

avg

avg

))) /

) *

Where:

τ

avg

data collection period

γ

= Average Shear Rate for an individual schedule step

avg

N = Number of schedule steps

The accuracy of the model is expressed as:

R² = 1 - (Σεi²/(ΣLog10(γ

)² - (ΣLog10(γ

avg

))² / N)

avg

Where εi represents the difference between the base-10 logarithm of measured
shear stress and the calculated shear stress using the Power Law equation τ = K x
γn for schedule step i.
For a perfect model, R² = 1.

Ending a Test

1. A test will end automatically when the schedule completes. The last temperature and

pressure set point are retained.

2. Remove the encoder from the top of the vessel.

3. To end a test in mid-schedule, press the Stop Schedule option, the motor will stop.

Change the motor control and temperature/pressure control to Manual mode. Enter
new temperature and pressure set-point values, 32°F and 1000 psi respectively.

NOTE: At least 1000 psi oil pressure should be retained until the heater temperature

is below 150°F.

4. Turn the heater switch Off.

5. Turn the pump switch to Off (center position).

6. After cooling and all pressure is released, place the temperature and pressure control

in manual mode, enter temperature and pressure set-points of 32°F (0°C) and 0 psi,
respectively.

7. Open the pressure release valve.

8. Turn the Vessel switch to Drain. This will force oil from the vessel to the supply

container. Once air is heard escaping from the vent port (about 30 seconds or less),
turn the Vessel switch to Off. Wait another 30 seconds for residual air pressure to
decrease.

9. Remove the plug assembly by unscrewing counterclockwise. Refer to Vessel

Disassembly instructions.

Instrument Calibration

SECTION 2 – OPERATING INSTRUCTIONS 2-27

Figure 31 - Rheo 7500 Calibration Screen

Calibration Overview

The Model 7500 HPHT Viscometer uses an automated software calibration procedure,
relating angular spring deflection to shear stress. Measurements made at a variety of
rotor speeds are compared to a stored table of values for a known calibration fluid to

2-28 SECTION 2 – OPERATING INSTRUCTIONS

establish a torque vs. shear stress linear relationship. A predefined schedule takes the
instrument from low speed to high speed, and back to low speed, waiting for a user­defined period at each of 40 predefined speeds (20 increasing and 20 decreasing) to
allow for measurement stabilization and data averaging. The result is a collection of
data from which system linearity and hysteresis are determined.

Using the calibration data, the instrument performance may be determined. Parameters
are used to determine a calibration pass / fail criterion. These parameters include
linearity, slope, intercept, standard deviation and maximum hysteresis. An acceptable
calibration is a STDEV less than 8 dynes/cm2 and Hysteresis less than 16 dynes/cm2.
The STDDEV and HYST values provide an indication of the performance of the
instrument, making it possible to detect performance problems due to worn pivot
bearings, pivots, bent bob shaft, friction, etc.

System Linearity

The linearity of the calibration data is indicated by the value of R². In general, an R²
value of 1.0000 indicates perfect linearity. An R² value of slightly less than one is
generally expected (0.9990).

Slope

Since a good calibration result is linear, the slope of the same line generated by the
least-squares method to produce R² provides an estimate of the spring constant in
dyne/cm² per degree. This constant can be used to predict the maximum measurable
shear stress by the formula τmax = slope (dyne/cm²) * 300 degrees. When a B1/R1 bob
and rotor combination is used, the slope value must exceed 5.11 to ensure the
measurement range extends beyond 300 degrees dial reading.

Intercept

The intercept of the line generated by the least-squares method provides an indication
of the shear stress offset. The intercept value is typically within the bottom 1% of the
shear stress range, in the positive or negative directions.

Hysteresis

Hysteresis provides an indication of overall friction in the system. When increasing the
bob shaft torque to a given value, the resultant angular deflection may be less than that
observed by approaching the same torque from a higher value. This is typically
assumed to be the result of friction, although other factors can influence the reported
hysteresis.

To characterize the hysteresis from a given calibration, each data point is compared
with the lookup table generated by the calibration procedure itself. Since the
calibration routine includes 1 data point for increasing shear rate and 1 data point for
decreasing shear rate at each pre-defined speed, each lookup table entry is determined
by the average of two bob shaft deflection measurements and the average of two shear
stresses.

SECTION 2 – OPERATING INSTRUCTIONS 2-29





Standard Deviation

During and after calibration, the deviation of each data point (in dyne/cm²) from the
lookup table (shear stress vs. angular deflection) is recorded. Standard deviation is
calculated based on the data set containing these points. The formula for standard
deviation is defined as:









Since each pair of data points is generated by comparison to their averages, M=0.

MX

 

12

N

, where M is the mean and N = the number of data points.

Maximum Hysteresis

Maximum Hysteresis is defined as the largest deviation found in the calibration data set
from the calibration table. Standard deviation provides a normalized indication of the
overall bearing friction; maximum hysteresis provides a meaningful measurement of
worst-case hysteresis.

Typical Hysteresis Curve

The numbers for Maximum Hysteresis (±x.xxx dyne/cm²) and Standard Deviation
(x.xxx dyne/cm²) are reported on the calibration screen of the Rheo 7500 software, as
well as reported in each data file.

Calibration Procedure

1. Using the Vessel Disassembly and Assembly instructions, fill the sample cup with

100 mL of certified silicone oil.

2. Mount the encoder to the top of the vessel.

3. Connect the encoder cable to the 9-pin connector on the encoder, tighten the retaining

screws.

4. Click the calibrate tab on the Instrument screen.

5. Select the rotor and bob geometry, generally R1 and B1.

6. Select the calibration fluid that was loaded in the sample cup. If using a new

fluid, enter the fluid viscosity values from the certification certificate.

7. Zero the encoder by clicking the “Zero” button.

8. Start the calibration by clicking the “Auto Calibrate” button.

9. Allow the automatic calibration sequence to complete. The HYST and STDDEV

values should be less than 16 and 8 dyne/cm2 respectively. If these values are not
achieved, check the following:

o Instrument is level.
o Mechanical friction is not preventing free motion of the bob shaft and torsion

spring.

o Pivot bearing and pivot are not damaged (once removed, a microscope or

loupe may be used to inspect these components)

10. When the calibration routine completes successfully, click “Save Calibration” to

store the calibration values that will be used when running subsequent tests.

11. Remove the sample cup, empty the fluid, and clean the instrument.

2-30 SECTION 2 – OPERATING INSTRUCTIONS

Calibration Summary

Each of the parameters listed above are reported by the Rheo 7500 software. In
addition to reporting each of these values on-screen, they are also recorded, along with
all other calibration data and parameters, near the top of each individual log file.
Analysis of the maximum hysteresis, hysteresis standard deviation, R², slope and
intercept provide a verification of the instrument performance.
User-defined parameters on the Calibration screen include:

 Bob Height – Entered automatically when the correct rotor/bob combination is

selected.

 Bob Radius - Entered automatically when the correct rotor/bob combination is

selected.

 Rotor Radius - Entered automatically when the correct rotor/bob combination is

selected.

 Calibration Fluid* - Calibration fluid values may be entered directly from the

Torque Calibration Tab. They may be saved and retrieved according to batch

number, etc. All values from the fluid calibration certificate should be entered in this
table from 20°C to 40°C in 1°C increments. During automatic calibration, these
values are used to determine the reference viscosity, based on the measured sample
temperature. The Calibration Fluid Files are stored in the "Program Files\Rheo
7500\CalibrationFluids\" folder. This folder must not be moved or deleted.

Figure 32 - Rheo 7500 Calibration Fluid Data File

 Stabilization Time - Defines how long to wait between calibration steps before

recording the value from the encoder.

 Auto Calibrate - Starts the auto-calibration sequence with the following options.

SECTION 2 – OPERATING INSTRUCTIONS 2-31

Figure 173 - Rheo 7500 Calibration Speeds

 Use Default Speeds – Uses default rotor speeds for calibration.
 Auto-Predict Maximum Speed – Using previous calibration data for the same

nominal viscosity calibration fluid, Rheo 7500 automatically determines the
maximum rotor speed without exceeding the target spring deflection. The
maximum speed should never exceed 600 rpm, and if so, manually change the
speed to 600 rpm.

 Target – Maximum deflection of the spring. Maximum value is 300 degrees.
 Maximum Rotor Speed – Maximum rotor speed at which to determine a

calibration value. Should never exceed 600 rpm.

 Minimum Rotor Speed – Minimum rotor speed at which to determine a

calibration value. Generally, set at 10 - 20 rpm.

 Use Even Spacing – Evenly disperses the tabular calibration rotor speeds.
 Use Default Spacing – Uses the default tabular calibration rotor speeds, the lower

speeds are more narrowly spaced.

 Use Default Timing – Default durations for the stabilization period and data

averaging period.

 Allow a stabilization period of: – Specify a duration, in seconds, for stabilization

of the shear stress value before collecting data.

 Before Collecting Data for: – Specify a duration, in seconds, during which shear

stress data is collected and averaged.

 Save Calibration - Saves the most current calibration data and instructs the Rheo 7500

software to begin using the new values.

 Zero Button – Automatically forces the current encoder reading to zero. The encoder

must be zeroed before a calibration sequence starts.

2-32 SECTION 2 – OPERATING INSTRUCTIONS

*If the calibrated viscosity values are not available over the entire range of 20°C
to 40°C, the unknown values may be ignored, as long as the sample temperature
stays within the range of the known values. For example, if a fluid calibration
certificate only shows values from 20°C to 30°C, the values from 31°C to 40°C
may be set to zero, or any other value. If the fluid temperature does not exceed
30°C during the calibration, the absence of the higher values will not affect the
instrument calibration.

Working viscosity reference values are generated via linear interpolation within
this table during the calibration procedure. The working viscosity reference
values are linearly extrapolated based on the closest two temperature points, if the
sample temperature is not within the range of this table.

SECTION 3 – MAINTENANCE AND SERVICING 3-1

Section 3 - Maintenance and Servicing

NOTE: Always disconnect the power connection prior to service.

Tools Required

 5/8-inch Wrench (supplied with instrument)
 Hex wrenches (supplied with instrument)
 Screwdriver (supplied with instrument)
 Needle nose pliers (supplied with instrument)
 Bench Vise

Cleaning and Service Tips

 Keep the threads and ports free from sample.
 Lubricate the threads on the top plug periodically with lithium grease (or equivalent).
 During instrument operation, avoid rapid release of pressure to prevent the sample

from entering the connection tubing.

 Remove debris that may collect in the supply container.

Controller Calibration and Configuration Procedure

The temperature and pressure controllers and transducers require periodic calibration.

Temperature calibration involves applying known values to the thermocouple electronics
using a thermocouple simulator.

Pressure calibration involves setting the ZERO of the transducer at atmospheric pressure,
then using a certified pressure transducer (connected to the front port of the plug),
pressurizing the system to near full scale and adjusting the SPAN of the controller to agree
with the known value.

WARNING: Do not connect the reference pressure transducer calibrator to the top

panel port of the instrument or connect the reference pressure transducer
calibrator to the top port on the pressure vessel. This action will cause
damage to the internal sample container that must remain pressure
balanced.

Prior to calibrating the instrument, remove the internal sample cup, bob,

and spring module.

Remove the port plug from the front of the pressure vessel top plug used

with loading the sample with a syringe. Connect the reference pressure
transducer calibrator to the port.

3-2 SECTION 3 – MAINTENANCE AND SERVICING

SECTION 3 – MAINTENANCE AND SERVICING 3-3

Each controller is configured using a utility (EZ-Zone Configurator) and configuration files
(WCF files). The EZ-Zone Configurator utility is installed on the computer. Each
configuration file is uploaded to the controllers via the serial interface.

Over-temperature
Reset

Figure 34 – Over-temperature Circuit

Periodic verification of the over-temperature relay set point (385°C) is recommended. Note
that the over-temperature relay will latch open, requiring resetting if/when an over­temperature event occurs. The relay may be reset by removing the right-side panel and
pressing the button on the front of the DIN mounted relay located in the electronics assembly
(7500-3002).

Additionally, the temperature controller will disable the heater when the sample or heater
alarm set point is exceeded or if a shorted thermocouple is detected. These alarms are
cleared once the temperature has decreased below the alarm set point by pressing the EZ2
button.

3-4 SECTION 3 – MAINTENANCE AND SERVICING

High Pressure Diaphragm Valve

Figure 185 - High Pressure Diaphragm Valve

The instrument is equipped with a diaphragm valve that is rated for use at 30000 psi, 207
MPa. A length of capillary tubing is located downstream of the valve to provide a slow
release of pressure when the diaphragm valve is opened by the controller.

The pressure on the valve diaphragm must be set at 70 psi, 480 kPa. The pressure adjustment
is located inside the electronics console (right-most regulator, facing the front of the
instrument)

The valve is equipped with a stem packing that may be tightened or replaced as required.
Contact Chandler Engineering if service on this valve is required.

Rupture Disk

SECTION 3 – MAINTENANCE AND SERVICING 3-5

Figure 196 - Rupture Disk Assembly

The instrument is equipped with a rupture disk that will fail if the maximum pressure rating
is exceeded. As a safety feature, a separate vent port is used for the discharge from the
rupture disk if/when failure occurs.

Determine and resolve the reason for the failure of the disk prior to replacing the disk.

The rupture disk is located towards the left-front of the instrument. The rupture disk
assembly must be removed from the instrument and mounted in a vise for removal of the
internal disk. Replace the disk and tighten. Attach the new certification plate that
accompanies the replacement disk.

High Pressure Transducer

Figure 207 - High Pressure Transducer

3-6 SECTION 3 – MAINTENANCE AND SERVICING

The instrument is equipped with a high-pressure transducer. The transducer was calibrated
by the manufacturer and calibration traceability is provided with the instrument. The output
of the transducer corresponding to 40000 psi is 5.00 VDC.

The transducer is not serviceable and must be replaced as an assembly. Contact Chandler
Engineering if replacement parts are required.

Pressure signal calibration is performed by scaling the pressure controller to agree with a
known pressure transfer standard.

SECTION 3 – MAINTENANCE AND SERVICING 3-7

Pivot Bearing and Pivot

Figure 218 - Bob and Pivot Bearing Assembly

The bob rests on a pivot that is located on the centerline of the sample cup on the thermowell.
The pivot may be removed with a pair of needle-nose pliers.

Heating / Cooling Jacket

Figure 229 - Heating and Cooling Jacket Assembly

The instrument is equipped with a combination heating and cooling jacket.

3-8 SECTION 3 – MAINTENANCE AND SERVICING

The heaters are controlled with a solid-state relay and PID controller. A master heater switch
must be ON to enable the heaters. In addition to the solid-state relay (SSR), both legs of the
heater power are switched using a contactor.

The over-temperature module will disable the heater if the temperature exceeds 725°F,
385°C. Similarly, if the pressure increases beyond 31000 psi, 214 MPa, the heater circuit is
disabled.

Pressure Vessel

O-rings and Backup Rings

HP O-ring

HP Metal backup ring

Figure 40 - Top Seal Ring Assembly

As a precaution, the elastomeric o-rings used to seal the top cap and vessel must be replaced
after high temperature tests that exceed 450°F. The metal backup rings are long lasting and
may be reused. For tests at temperatures exceeding 450°F, FFKM o-rings are required. For
tests at temperatures below 450°F, FKM o-rings may be used.

The top cap o-ring and backup ring must be removed once the top cap is removed. The
bottom plug o-ring and backup ring may be removed when the baffle is removed.

The baffle serves as a mounting point for the sample cup and a retainer for the seal and
backup ring. Two o-rings are used to seal the baffle and the sample cup, both must be
replaced when wear is evident to prevent loss of sample into the pressurizing fluid.

Note: At no time should a sample be tested without the baffle o-rings installed.
Doing so will contaminate the sample with pressurizing oil, leading to poor
results and possible damage to the instrument.

If contamination occurs, clean the vessel and flush the system with clean pressurizing fluid.
Clean the high-pressure filter.

SECTION 3 – MAINTENANCE AND SERVICING 3-9

Sample Cup

Thermowell

The thermowell at the bottom center of the sample
cup serves multiple functions. It provides a
location for the center thermocouple that is near
the sample, providing an accurate sample
temperature measurement.

The thermowell also provides a support for the
pivot bearing pivot and a shoulder for the rotor
bearing.

The thermowell may be removed from the sample cup by unscrewing it from the cup using
tool 7500-2205. This tool also serves to verify the axial alignment of the thermowell in the
sample cup.

Magnetic Drive

Inner Magnetic Rotor

Figure 41 - Internal Magnetic Drive Rotor

The inner magnetic drive rotor is equipped with a bushing that must be replaced if worn.
Verify that the bushing rotates freely on the thermowell. There are no other serviceable
components on the inner magnetic drive rotor. If damaged, the assembly must be replaced.
Contact Chandler Engineering if replacement parts are required.

3-10 SECTION 3 – MAINTENANCE AND SERVICING

Outer Magnetic Drive Rotor

Bearing

Figure 232 - Outer Magnetic Drive Rotor

The outer magnetic drive rotor is equipped with bearings that may be replaced if worn.
There are no other serviceable components on the outer magnetic drive rotor. If damaged,
the assembly must be replaced as a component. Contact Chandler Engineering if
replacement parts are required.

The magnetic drive rotor bearings are lubricated using small amounts of Krytox grease.

NOTE: The internal magnets are very strong and easily damaged during

installation.

Encoder Assembly

Figure 243 - Encoder Assembly

The instrument is equipped with a high-resolution encoder that senses the angular
displacement of the magnet and spring assembly inside the pressure vessel. The encoder
code wheel is suspended between precision pivot bearings.

SECTION 3 – MAINTENANCE AND SERVICING 3-11

The encoder may be disconnected by removing the interconnection cable. The encoder may
be cleaned and rebuilt using tools and procedures defined on the assembly drawing. Contact
Chandler Engineering for additional details.

The encoder assembly is equipped with a cooling jacket that is used during extended high
temperature tests (>350°F / 177°C). The air flow may be controlled using a needle valve
located on the left side of the electronics enclosure.

NOTE: The encoder assembly is fragile. If dropped, the assembly will require

service or replacement.

3-12 SECTION 3 – MAINTENANCE AND SERVICING

Supply Containers

Figure 254 – Supply Containers

The container located at the right-front of the instrument chassis contains the heat transfer
fluid used to pressurize the sample. The container is pressurized to approximately 20 psi,
138 kPa to provide the pump with a positive inlet pressure. The container located at the
right-rear of the instrument chassis is used to capture the fluid that is discharged during
normal operation of the instrument. This container must be emptied periodically.

An internal relief valve is provided to limit the pressure in the container right-front container
to 30 psi, 207 kPa. The right-rear container is not pressurized.

Fluid may be added to the right-front container with a test in progress by placing the vessel
switch in the OFF (middle) position. Add fluid to the container, replace and hand-tighten the
container and place the switch in the Fill position.

The containers are equipped with elastomeric seals that may be replaced as required.

Internal Regulator Pressures

SECTION 3 – MAINTENANCE AND SERVICING 3-13

Figure 45 - Pump and Diaphragm Valve Pressure Regulators

The instrument includes two pressure regulators that are used to control the supply pressure
to the supply container and diaphragm valve. These regulators are located in the Top
Electronics Assembly (7500-3003) and may be accessed by removing the rear cover from the
assembly. Unlock the adjustment knob by pulling vertically, adjust to the desired discharge
pressure, and lock the knob by pressing the knob vertically.

The discharge pressures are measured individually by removing a pressure port cap and
connecting a pressure gauge accessory. Disconnect air pressure from the instrument until the
pressure gauge accessory is connected. Set the pressure values to the following values:

o Supply container: 20 psi (138 kPa)
o Diaphragm valve: 70 psi (480 kPa)

Remove the supply container pressure relief valve and set to 30 psi (207 kPa). Lock the
adjustment knob in place.

3-14 SECTION 3 – MAINTENANCE AND SERVICING

Motor Drive Belt and Stepper Motor

Figure 46 - Stepper Motor and Pulley

The motor drive belt tension is set by loosening the motor bracket mounting screws and
sliding the motor assembly. The belt tension must not be excessive, approximately 0.25 -

0.50-inch of deflection halfway between the motor and magnetic drive centerlines is
sufficient.

The stepper motor is not serviceable; the motor is replaced as a unit once the pulley and
mounting bracket are removed.

Use the following procedure to replace the motor drive belt:

1. Remove the covers from the instrument.

2. Remove the Top Electronics Assembly (7500-3003) after disconnecting the marked

cables and 1/4-inch tube connections.

3. Remove the top panel.

4. Remove the Electronics Module Assembly (7500-3002).

5. Disconnect the two cables to the motor.

6. Loosen or remove the four bolts that retain the motor assembly to the base plate.

Remove the motor assembly if the motor must be replaced.

7. Remove the four bolts that retain the vessel mounting flange to the base plate.

8. Remove the centerline thermocouple from the bottom of the vessel.

SECTION 3 – MAINTENANCE AND SERVICING 3-15

9. Replace the belt by sliding the belt between the top of the base plate and the bottom

of the vessel mounting flange. For this to occur, the high pressure port connections at
the bottom of the vessel must be loosened or removed. A special wrench is supplied
for use in loosening and re-tightening the bottom connections.

10. Reassemble in reverse order.

Pump and High Pressure Valves

The instrument is equipped with an air over liquid pump with a 220:1 ratio. The pump is
capable of generating a discharge pressure up to 30000 psi, 207 MPa provided adequate air
pressure is provided (130 psi, 900 kPa).

Figure 267 - High Pressure Pump

The high-pressure pump may be rebuilt using two kits (high pressure seals, low pressure
seals). Once the pump is removed from the instrument it may be rebuilt in accordance with
the manufacturer instructions. Alternately, the pump may be replaced as an assembly.

The high-pressure valves (pressure release valve, diaphragm valve) are replaced as separate
units. Contact Chandler Engineering if replacement parts are required.

3-16 SECTION 3 – MAINTENANCE AND SERVICING

Instrument Voltage Selection

Figure 278 – Electronics Assembly

The instrument is designed to operate using 208-240 VAC, 50/60 Hz supply voltage. The
fuse ratings are listed as follows:

o 208-240 VAC: 5A Slow Blow (two 3AG fuses)

SECTION 3 – MAINTENANCE AND SERVICING 3-17

Instrument Circuit Breakers

All circuits in the instrument (except the heater) are protected using circuit breakers. If a
breaker opens, the fault must be determined and corrected. The breaker may be reset by
pressing the button on the breaker. Individual breakers may be replaced by unplugging from
the DIN rail mounted receptacle. Refer to the wiring diagram 7550-3030 for additional
details.

The vessel heater is protected using two 3AG fuses that are located on the rear panel of the
instrument.

Instrument Solenoid Valves

Figure 281 - Solenoid Valve Assembly

The instrument contains four solenoid valves. Care must be used during servicing not to
interchange the valves; the 3-way and 2-way valves appear similar with identical
connections. Each valve is equipped with 24vdc solenoid valve coils. Refer to the wiring
diagram 7550-3030 for additional details.

SECTION 4 – TROUBLESHOOTING GUIDE 4-1

COMPONENT

EACH TEST

MONTHLY

3 MONTHS

6 M

ONTHS

ANNUAL

as required

pressure test vessel

Centerline

Jacket

certified fluid

digital tachometer

Per API/ISO Specifications

pump.

need to be reset.

5. Defective controlle

r,

controller parameters

or

Section 4 - Troubleshooting Guide

The following table lists symptoms of several common problems, the possible
cause of the problem, and the possible solution to the problem.

MAINTENANCE SCHEDULE

Model 7550 HPHT Viscometer

Vessel Seals Inspect & replace

Vessel Assembly Clean as needed Inspect and

Rupture disc Replace

Temperature -

Temperature –
Heating/Cooling

Pressure Transducer  Calibrate

Torque (Shear Stress) Calibration using

Motor (Shear Rate) Verify with a

This maintenance schedule applies to normal usage of two tests per day.



 Calibrate

 Calibrate

Problem Solution

System will not pressurize 1. Verify that the air supply is present, and the vessel

switch is set to Fill.

2. Verify that the controller is enabled using the EZ1
button.

3. Verify that fluid is present in the front supply
container.

4. Check for leaks at the vessel or interconnecting
tube fittings.

5. Check that the line size to the Air Inlet port is at
least ¼-inch to supply adequate volume flow to the

System will not heat 1. Verify that communication cables are connected.

Poor temperature or
pressure control

2. Verify that the controller is enabled using the EZ1
button.

3. Verify that heater switch is ON.

4. Check heater fuses on back panel.

5. Check that the over-temperature relay does not

1. Defective thermocouple or pressure transducer.

2. Defective capillary tubing.

3. Incorrect control schedule.

4. Incorrect controller configuration parameters.

4-2 SECTION 4 – TROUBLESHOOTING GUIDE

related electronics

.

4. Verify that

circuit breaker

is not

tripped

.

intern

al components.

2. Encoder assembly requires service.





60



2

Problem Solution

Stepper motor will not run 1. Verify proper operation of the Rheo7500 software

2. Verify operation of motor in Manual mode.

3. Verify that communication cables are connected
and COMM port assignments are correct

Poor STDDEV and HYST
values

1. Worn bob pivot bearing and pivot.

2. Incorrect calibration data

3. Instrument is not level.

4. Check for friction in the spring module assembly.

5. Check for bent bob shaft or other damage to

Erratic Readings 1. Sample container not full.

Rheology Equations

The following equations are used to calculate the values for Shear Stress, Shear Rate, and Viscosity in the
7550 HPHT Viscometer:

2

R

RateShear





o

22



RR

io

M

= Stress,Shear



2



R

,

2

L

i

sdyne

cm

ec

2



, = Viscosity,





sec,2,

dyne

cm

Poise ,

2

x Rpm = Velocity, Angular

1



2



,

ec1s

where,

M = Torque on Bob shaft (dyne-cm)
L = Bob Height, cm
w = Angular Velocity, sec-1
Ri = Bob Radius, cm
Ro = Rotor Radius, cm
PV = Plastic Viscosity, cP
YP = Yield Point, Lbf/100ft2
Time = Seconds
Temperature = F
Pressure = psi
Angle = degrees



cos





300



600



cPoise =ity VisPlastic ,cos

300600

2

100/cosint ftlbf ,ityVisPlastic = PoYield 

cPoise ity,VisApparent ,

SECTION 4 – TROUBLESHOOTING GUIDE 4-3

Shear Stress = degrees (for a given spring constant) and dyne/cm2
Spring Constant = dyne-cm/degree
Viscosity = cP
Gel Strength = lbf/100 ft2
Shear Rate = sec-1
Motor Speed = RPM

4-4 SECTION 4 – TROUBLESHOOTING GUIDE

This page is intentionally left blank.

SECTION 5 – REPLACEMENT PARTS LIST 5-1

70610

-68 Fuse,

5.000

A,

250V, 3AG, Timedelay

7500

-

2010

Vessel Assembly

7500

-

2106

Jacket,

Heat/Cool

7500

-

2155

Motor Pulley Assembly

7500

-

2178

Gasket,

Insulating

7500

-

2181

Jacket,

Insulation

7500

-

2204

Tool,

B

ob

Installation

7500

-

2312

-1

Tube 1,

Lower,

Heat Exch

anger

7500

-

2312

-2

Tube 2,

Uppe

r, Heat Exchanger

7500

-

3107

Tube Set,

LP,

Copper

7500

-

3172

Tube Set,

HP, SS

7500

-

3172

-9

Tube 9

7500

-

3186

Valve,

Air Op

erated

, 30000

psi

7500

-

3229

Magnetic Drive Assembly

7600

-

1188

Gasket,

Reservoir Cap

80-

0021

TC,

Special Type J,

2.57"L

84-0067

Cable Ass

embl

y 200

-

240

VAC

C07833

Trans

ducer, Pressure,

40 kpsi, W/Cable

C08974

Pump

, M

axpro

C10380

Valve,

Check, Brass,

1/4T x 1/4T, 3000

psi

C11114

Bottle, Nalgene, 32 o

z, Grey

C11293

Gage,

30000

psi, 4", 1/4

HPF

, P

anel m

ount

C11306

Spring Kit,

Steel, Rl3,

10-

225 psig

C12886

Fan,

DC,

60mm,

24VDC

C13044

Motor,

Step,

AC,

Mdrive34

C13160

Valve,

Needle, SS, Spee

d Control,

Elbow

C13821

Controller,

PID, 2L

,Watlow

C13822

Controller, PID, 1L

,Watlow

C15903

Belt, Timing, XL

, 205 Teeth

C16085

Sling, Lifti

ng,1" x

6Ft

P-1954

Conn,

Bras

s,1/4

FP x

1/4T, B

ulkhead

P-3544

Conn, TC

, Type J,

Female

Section 5 – Replacement Parts List

Model Number 7550

Part Number Description

To ensure correct part replacement, always specify model and serial number of
instrument when ordering or corresponding.

5-2 SECTION 5 - REPLACEMENT PARTS LIST

This page is intentionally left blank.

SECTION 6 – DRAWINGS AND SCHEMATICS 6-1

7550

MODEL 7550 HPHT VISC,220V

7550

-

3030

DIAGRAM,WIRING,MODEL 7550 HPHT

7550

-

3031

TUBING DIAGRAM,MODEL 7550 HPHT VISCOMETER

7500

-

2010

VESSEL A

SSEMBLY,MODEL 7500

7500

-

3002

ELECTRONICS MODULE ASSY,220V

7500

-

3003

ELECTRONICS ASSEMBLY, TOP

7500

-

3229

ELECTRONICS ASSEMBLY, TOP

7

550-ACCESS

ACCESSORIES,MODEL 7550 HPHT

Section 6 – Drawings and Schematics

Drawing

Number

Description

6-2 SECTION 6 – DRAWINGS AND SCHEMATICS

This page is intentionally left blank.

NOTES:

REFER TO 7500-3172 FOR HIGH PRESSURE TUBE SET.1.
REFER TO 7500-3107 FOR LOW PRESSURE TUBE SET.2.
REFER TO 7500-3321 FOR PLASTIC TUBE SET.3.
CONFIGURE C08974 PUMP FOR USE WITH 7500-2228 BRACKET, REMOVING 4.
BRACKETS SUPPLIED WITH PUMP.
ROTATE C08259-7500 VALVE AS SHOWN.5.

H

G

F

E

D

C

B

A

1

17.150

1

23 56

5

46

45

28.000

2

3

4

40873

4

5

78

62

72

15.000

76

8

9

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING

9

COMPANY LLC

10

ITEM PART NUMBER DESCRIPTION QTY

1 7500-3019 ENCLOSURE ASSEMBLY 1
2 7500-2010 VESSEL ASSEMBLY, MODEL 7500/7550 1
3 7500-2155 PULLEY ASSEMBLY, MOTOR 1
4 7500-3003 ENCLOSURE ASSEMBLY, TOP 1
5 7500-3173 COVER, VESSEL 1
6 7500-3002 ELECTRONICS MODULE ASSY, 220V 1
7 7500-2141 RING, BEZEL 1
8 P-2188 VALVE,ANGLE,60KPSI,SST,1/4 HPT 1

9 C08974 PUMP, MAXPRO, PP189 1
10 C08259 VALVE,AIR OPR,30000PSI,7500 1
11 7500-3172-2 TUBE 2 REF
12 84-0067 CABLE ASSY 200-240VAC 1
13 C07833 XDCR,PRESSURE,40KPSI,W/CABLE 1
14 C13044 MOTOR,STEP,AC,MDRIVE34,ACCUS 1
15 7500-2178 GASKET, INSULATING 2
16 P-1954 FITTING, SWAGELOK, B-400-71-4 1
17 C08268 RETAINER,SST,3/4ID,BHD,SW 3
18 7500-2182 GLAND, EXTENDED 1
19 C12406 HINGE, SPRING, SOUTHCO 2
20 7500-2187 HANDLE, COVER 1
21 7500-2189 NUT, TUBING 2
22 C11293 GAGE,30000PSI,4",1/4HPF,PNLMT 1
23 C12470 CABLE,LUMBERG RST 5-228/2M 1
24 C12471 CONN, LUMBERG, RK 30-638/2M 1
25 C15903 BELT,TIMING,XL,205 TEETH 1
26 7500-ACCESS ACCESSORIES, MODEL 7500 1
27 P-0984 LEVEL,CIRC,0.875MTG FLG,0.625DIA 1
28 H-6015 SCRE W,THMS,SS,6-32X0.375,PHIL 3
29 H-8026 SCRE W,THMS,SS,8-32X0.375,PHIL 9
30 P-0193 GLAND,SST,TUBE,1/4TX9/16-18RH 3
31 7500-3208 TUBE ASSEMBLY, HP CAPILLARY 1
32 7500-3172-11 TUBE 11 REF
33 69-793 SAFE HEAD .25X.083TBG F/1/4A 1
34 7500-3272 ENCODER ASSEMBLY, 7500/7600 1
35 7500-3321-B TUBING,POLYURETHANE,1/4 REF

36 C15746
37 70610-68 FUSE,5.000A,250V,3AG,TIMEDELAY 2

38 7550-0084 NPL,SN.PWR RATING,7750,220V 1
39 C09393 COMPUTER,LAPTOP 1
40 7500-2228 BRACKET, PUMP 1
41 7500-2312-1 TUBE, LOWER, HEAT EXCHANGER 1
42 7500-2312-2 TUBE, UPPER, HEAT EXCHANGER 1
43 C09880 CONN 3/8T X 1/4NPT,BLKHD 2
44 C13898 DISK,RUPTURE,31000PSI,0.25" 1
45 7500-3229 MAGNETIC DRIVE ASSEMBLY 1
46 7500-3310 MANIFOLD, HP 1
47 7500-3172 7500, TUBE SET, HP, SS 1
48 7500-3172-1 TUBE 1 REF
49 7500-3172-3 TUBE 3 REF
50 7500-3172-4 TUBE 1 REF
51 7500-3172-5 TUBE 5 REF
52 7500-3172-7 TUBE 7 REF
53 C08582 CONN,1/4HPTX1/4HPT,50KPSI,BHD 1
54 7500-3172-8 TUBE 8 REF
55 70605-69 HOUSING,3 PIN,MOLEX 03-06-2032 1
56 P-1254 CONN,BRS, 1/4 MP x 1/4 T, SW 1
57 7500-3107-9 COPPER TUBE 8 REF
58 P-0915 PLUG,SS,1/4T,HP 2
59 C14023 LABEL,WARNING,HAZARD VOLTAGE,1.00" BASE 1
60 H-10-120 SCREW,BHMS,SS,10-32X1.250 6
61 H-8015 SCREW, FHMS, SS 8-32X0.500, PHIL 5
62 H-25-019 SCREW,1/4-20X3/4,HHCS,SS 4
63 7500-3017 CABLE ASSEMBLY, ENCODER 1
64 C15217 CONN,BLKHD,SMC,1/4TX1/4T 1
65 C03321 UNION,SS,BHD,1/4TX1/4T,SW 2
66 7500-2106 HEATER SET, CAST, ALUMINUM 1
67 7500-2181 JACKET, INSULATION 1
68 C14168 ELBOW,SS,1/2TX1/2T,UN 2
69 P-3200 ELBOW,BRS,3/8MPX3/8T,CR 2
70 P-1400 ELBOW,BRS,0.375MP x 1/4T 1
71 7500-3107-10 COPPER TUBE 10 REF
72 80-0021 THERMOCOUPLE, UCA 1
73 P-3544 CONN,TC,FEM,TYPE J 1
74 7500-3107-11 COPPER TUBE 12 REF
75 C07279 UNION,SS,BHD,1/16T,SW 2
76 7500-3321-M TUBING,POLYURETHANE,1/4 1
77 C15968 TEE,SS,RUN,1/2Tx3/8FNPT 2
78 7500-3107 TUBESET, LP, COPPER 1
79 C07376 TERM,MALE,MOLEX 02-06-6103 2
80 C13395-7550 CRATE,FOAM 7550,OMNI 1
81 C13396 BOX,PLASTIC W/FOAM INSERT,OMNI 1
82 C16085 LIFTING STRAPS 2
83 H-8033 SCREW,SHCS,SS,10-24X1.250 2
84 C11292 POLYSEAL TUBING .03
85 C12233 LABEL, EARTH GROUND 1
86 7500-3172-9 TUBE 9 REF
87 C16152 RETAINER,SS,1/16T,BHD 2
88 7500-3179 BRACKET, MOTOR 1
89 7500-2203 RETAINER, FITTING 1
90 C16481 ELBOW, SMC 3/8MNPT X 1/4 1
91 7500-3182 CABLE MOUNTING BRACKET 1
92 H-4105 SCRE W,FHMS,SS,4-40X0.250,PHIL 1
93 7500-3187 HIP VALVE SPACER PLATE 1
94 3000-1014-202 BRACKET,T/C MOUNTING 1
95 7500-3321 TUBESET,7550,POLYURETHANE 1
96 C16723 CABLE CLIP 3
97 7550-REF REFERENCE DOCUMENTS REF
98 7500-3186 VALVE MODIFICATION,30000PSI,7500 1

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC 0.030 2 PLC 0.010

0.005 ANGL

3 PLC

SURFACE FINISH 63 RMS

10

THIRD ANGLE PROJECTION

11

REV DESCRIPTION DATE APPROVED

ECN T7160; CHG QTY OF P-0193 FROM 16

TO 3, CHG QTY OF C12228 FROM 1 TO 2,

R

DELETE C15662, P-0866, C15216, 13-458,

C09312, C16153. ADD C07376, C13898,

70605-69, C12229, AND C16723

T ECN T7538; ADDED 7500-3186 2/6/2017 JS

U ECN T7954; REPLACED C12489 WITH C09393 1/8/2018 JS

7550-1050 OPERATING MANUAL 1

LABEL,WARNING,HOT SURFACE HAZARD,1.00"
BASE

1/2

DRAWN: JJM

ENGR: JJM

TYPE:

STRUCT:

9/27/2013

CHANDLER ENGINEERING

10/18/2013 MFG: LDR
9/27/2013

MODEL 7550 HPHT VISCOMETER

PN: 7550 SIZE D

PROJ: 7550

11

12

3/31/16 TC

REV U
SHEET 1 OF 3

12

2

TITLE BLOCK REV 3

H

G

F

E

D

C

B

A

1

23 56

4

78

9 101112

H

19 29 27

15

20

G

H

G

5

F

4

F

1

E

E

D

C

D

C

12

B

B

422841431617386

A

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING

1

2

3

4

5

67

89

COMPANY LLC

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC 0.030 2 PLC 0.010
3 PLC 0.005 ANGL 1/2

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

DRAWN: JJM

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/27/2013

CHANDLER ENGINEERING

10/18/2013
9/27/2013

MODEL 7550 HPHT VISCOMETER

PN: 7550

PROJ: 7550

SIZE DREV U

SHEET 2 OF 3

12

TITLE BLOCK REV 3

NOTES:

INTERNAL COMPONENT VIEWS FOR REFERENCE ONLY.1.

1

23 56

4

78

9 101112

H

G

F

E

H

G

F

E

D

C

B

A

D

C

B

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING

1

2

3

4

5

67

89

COMPANY LLC

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC 0.030 2 PLC 0.010
3 PLC 0.005 ANGL 1/2

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

DRAWN: JJM

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/27/2013

CHANDLER ENGINEERING

10/18/2013
9/27/2013

MODEL 7550 HPHT VISCOMETER

PN: 7550

PROJ: 7550

SIZE DREV U

SHEET 3 OF 3

12

TITLE BLOCK REV 3

CHANDLER ENGINEERING

CHANDLER ENGINEERING

2

NOTES:

MUST BE PRESSURE TESTED PER PROCEDURE 7500-2064.1.

4 8

ZONE REV. DESCRIPTION DATE APPROVED

ECN T7128; ELIMINATED UNUSED PORTS A T THE BOTTOM

OF THE 7500-2500 VESSEL ASSEMB LY. SHORTENED

H

SPRING MODULE AND ADDED 7 500-3317 BOTTOM

F

ECN T7348; CORRECTED BUBBLE ASSIG NEMENTS ON

J

71 653

SPRING MANDREL

SHEET 2

REVISIONS

3/11/2016 JJM

F

8/9/2016 JJM

E

E

15

16

D

D

ITEM PART NUMBER DESCRIPTION QTY

14

1 7500-2132 SEAL, CAP, HIGH PRESSURE 2

2 7500-2133 SEAL,VESSEL,HIGH PRESSURE 2

3 C12806 ORING,FFKM COMPOUND,AS568-125 2

4 C12807 ORING,FFKM COMPOUND,AS568-135 2

5 7500-2500 CYLINDER, PRESS. VESSEL ASSY 1

C

5

6 7500-2020 ROTOR ASSEMBLY, INNER, MAGNETIC DRIVE 1

7 7500-2018 ROTOR ASSEMBLY, R1 1

C

8 7500-2027 MODULE ASSEMBLY, SPRING 1

9 7500-2025 BOB ASSEMBLY, B1 1

10 7500-2122 BAFFLE, BOB 1

11 7600-1223 PIVOT, SAPPHIRE BEARING 1

12 7500-2111 BUSHING, INNER MAGNET 1

13 7500-2152 SUPPORT, BOB 1

14 P-0193 GLAND,SST,TUBE,1/4TX9/16-18RH 1

15 7750-0115 HANDLE,PLUG,CYLINDER 2

B

16 P-0915 PLUG,SS,1/4T,HP 1

B

17 7500-2149 SLEEVE, SAMPLE CUP 1

18 H-6011 SCREW,FHMS,SS,6-32X0.250,PHIL 3

19 70612-09 SCREW,SHCS,SS,4-40X0.250,ALLEN 1

20 43098-00 SCREW,SHCS,SS,8-32X0.375 4

21 C15503 ORING,FFKM COMPOUND,AS568-031 1

22 C11190 ORING,VITON,AS032-75 1

23 7500-2263 BRACKET, RETAINING, TOP PIVOT 1

24 C11219 BRG,BALL,RAD,0.125X0.375X0.156 1

A

25 C15527 ORING,FFKM COMPOUND,AS130-75 1

26 C10788 ORING,VITON,AS125-75 1

A

27 C12385 ORING,VITON,AS135-75 1

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

1

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC 0.030 2 PLC 0.010

0.005 ANGL

3 PLC

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

1/2

DRAWN: JJM

MFG: TWC

ENGR: JJM

TYPE:

STRUCT:

8/26/2012
8/28/2012
8/26/2012

CHANDLER ENGINEERING

VESSE L ASSEMBLY, MODE L 7500/7550

PN: 7500-2 010

PROJ:

SIZE C

REV H
SHEET 1 OF 2

TITLE BLOCK REV 3

F

E

NOTES:

APPLY LUBRIPLATE GREASE TO RETAIN BUSHING IN PLACE IN THE MAGNETIC ROTOR.1.
REFER TO BOB ASSEMBLY DRAWING 7500-2025.2.
PLUG AND CAP ARE MATCHED AND MUST NOT BE INTERCHANGED.3.
REFER TO SPRING MODULE ASSEMBLY DRAWING 7500-2022, 7500-2219, 7600-1013, 7600-1336 AND 7500-2027.4.
USE TOOL 7500-2205 TO INSTALL OR REMOVE THERMOWELL.5.
USE TOOL 7500-2204 TO INSTALL OR REMOVE BOB ASSEMBLY.6.
INSTALL THE C10788 AND C12385 STANDARD VITON ORINGS FOR THE HYDROSTATIC TEST AND DISPOSE OF AFTER TEST.7.
INSTALL THE FIRST SET OF FFKM ORINGS FOR THE MAX TEMPERATURE AND PRESSURE TEST. THE SECOND SET WILL BE 8.
INSTALLED FOR FINAL ASSEMBLY AFTER TESTS.

2

4

51 3

876

SAMPLE TEMPERATURE TOP CAP SEAL PLUG SEAL TOP BAFFLE SEAL SAMPLE CUP SEAL

LESS THAN 205 C/400 F C10788 C12385 C15527 C15503

F

GREATER THAN 205 C/400 F C12806 C12807 C15527 C15503

22

19

23

E

8

15

2

D

7

4

8

25

10

14

D

16

11

D

24

20

9

C

21

18

11

C

13

7

9

B

APPLY THREAD SEALANT
LOCTITE 567 (C12059)

6

13

DETAIL B

B

DETAIL D

SCALE 1 : 1

12

SCALE 1 : 1

B

17

5

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING

1

COMPANY LLC

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC 0.030 2 PLC 0.010

0.005 ANGL

3 PLC

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

1/2

DRAWN: JJM

MFG: TWC

ENGR: JJM

TYPE:

STRUCT:

8/26/2012
8/28/2012
8/26/2012

CHANDLER ENGINEERING

VESSE L ASSEMBLY, MODE L 7500/7550

PN: 7500-2 010

PROJ:

SHEET 2 OF 2

A

SIZE CREV H

TITLE BLOCK REV 3

H

1

2 3

NOTES:

COMPONENTS 7500-3019-19 AND 7500-3019-20 ARE SUPPLIED AS A PART OF

1.
ENCLOSURE ASSEMBLY 7500-3019. REMOVE THESE COMPONENTS FROM THE 7500-3019
ASSEMBLY FOR USE WITH THIS ASSEMBLY.
7500-3002 IS CONFIGURED FOR USE AT 208-240VAC.

2.
USE PROCEDURE WAGO-0002 TO CONFIGURE.

3.

18

4

5 6 7 8

47

51

46

9

10 11 12

REV

H

J

ECN T6679; REPLACE C10353 W/ C16893

ECN T7160; CHG QTY OF C08226 FROM 3 TO

5, C11127 4 TO 2, C11126 9 TO 8, C07377 33

TO 2, C08266 3 TO 2, CO7458 7 TO 1, P-2778 5

TO 1, C10900 9 TO 5, C10903 13 TO 8, C11128

4 TO 2, C11616 2 TO 1, C11617 2 TO 1, C11618

8 TO 4, C11618 8 TO 4, C13241 17 TO 20,

C13250 17 TO 20. DELETE C07460, C07395,

DESCRIPTION

AND C10904

DATE

7/1/15

3/30/16

APPROVED

NSM

TC

H

G

50

L

ECN T8366; ADDED WAGO-0002

11/27/2018

JS

9

19

G

1

F

E

D

C

B

A

52

F

52

11

ITEM

1

2

3

4

5
6
7
8
9

10

11
12
13
14
15
16
17
18
19
20
21
22

8

42

21

43

44

4

INSERT LENGTH OF

PLASTIC TUBING AND

1-INCH #4-40 SCREW

AND NUT TO STABILIZE

COMM PCB'S

20

1

2

3

4

5

6 7

8

45

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

9

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

0.030 2 PLC

0.005 ANGL

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

23

24

25
26
27
28
29
30

31

32
33
34

35

36
37
38
39
40
41
42
43
44
45
46
47

48

49

50

51

52

53

54

55

56

57

0.010
1/2

PART NUMBER

7500-3019-20

C11291

C10902

C16893

C10998
C10901
C08226
C10994
C15947

7500-3019-19

C08182
C11127
7500-2196
7500-2197
C10905
C11126
C10964
C09338
70616-90
C12468
C09285
H-6007
H-8026

C12624

C12626
C12627
C12629
C12633
C12625
C07458

C07377

C08266
P-2778
C10900

C10903

C11128
C11616
C11617
C11618
C11619
C12722
C10179
C12780
C12788
C10792
C13248
C13247

C13241

C13250

C15941

C15942

31-31

C16252

C16253

C10955

P-2380

WAGO-0002

DRAWN: JJM

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/25/2013
10/14/2013
9/25/2013

DESCRIPTION

ENCLOSURE, ELECTRONICS

MODULE,INCREMENTAL ENCODER,WAG
BLOCK,TERM,DIN,280,2COND,GRND,WAG

O

RELAY,SPDT,24VAC/DC,DIN,20AMP

MODULE,WAGO END,750-600
BLOCK,TERM,DIN,280,2COND,YLW,WAGO
STOP, END, DIN RAIL
BASE,MODBUS,WAGO,750-315
RELAY,DPST,24VDC,25A,PLUG-IN

PANEL, SIGNAL AND POWER

HOLDER,FUSE, 3 AG, RECESSED HD
BLOCK,TERM,BLU,WAGO 280-904
RAIL, DIN, BOTTOM
RAIL, DIN, TOP
BLOCK,TERM,END PLATE,WAGO 280-309
BLOCK,TERM,BLK,WAGO 280-905
SOCKET,RELAY,DIN MTG,6 TERM
GROMMET,RUBBER,1.5 I.D.
MODULE,PWR ENTRY,250V,15A,FLTR
CONVERTER, RS232-R422
STDF,HEX,ZN,0.18X0.31,4-40,M/F
SCREW,THMS,SS,6-32X0.250,PHIL
SCREW,THMS,SS,8-32X0.375,PHIL
BLOCK,TERM,DIN,282,FUSE,BLADE,GRY,W

AGO
JUMPER,ADJ,WAGO
BREAKER, 0.25A, AUTO,ETA
BREAKER,1.0A,AUTO,ETA
BREAKER, 6.0A, AUTO,ETA
COVER,END,WAGO
RCPT,HSNG,3PIN,W/O EARS

CONTACT,SKT,24-18AWG,CRIMP

CONN,T/C,SUBM,TYPE J,FEMALE
PLUG,OMEGA,SUBMINIATURE
BLOCK,TERM,DIN,280,2COND,RED,WAGO

JUMPER,ADJ,GRY,WAGO,280-402

JUMPER,STAGGERED
CONN,RECEPTACLE,5-PIN,0.093 DIA
CONN,PLUG,5-PIN,0.093 DIA
TERM,SKT,20-14AWG,0.093,CRMP,AU
CONTACT,SKT,20-14AWG,CRIMP
CONN,DB9P TO TERMINALS
POWER SUPPLY,24V,1.2A DIN-RAIL
POWER SUPPLY,24V,4.2A DIN-RAIL
RELAY,SPDT,24VAC/DC,0-399C,DIN
CONVERTER,RS232-RS485,9 PIN
CONN,PLUG,16 POS,MINI-FIT-JR
CONN,RECPT,16 POS,MINI-FIT-JR

TERM,CONN,24-18 AWG,TIN,FEMALE

TERM,CONN,24-18 AWG,TIN,MALE

CONN,PLUG,10 POS,MINI-FIT-JR

CONN,RECPT,10 POS,MINI-FIT-JR

GROMMET,1/2ID SILICONE

TERM,16AWG,FEM,MINI

TERM,16AWG,MALE,MINI

GROMMET,0.63IDX0.88HOLE,SILICONE

JACK,PNL,TC,1.12,SQ FACE

PROC,WAGO 750-315 300-000 SETUP

-220V/QTY.

REF

1

5

1

1
7
5
1
1

REF

2
2
1
1
9
8
1
1
1
1
4
2
3

5

4
2
2
1
1
1

2

2
1
5

8

2
1
1
4
4
1
1
1
1
1
1
1

20

20

1

1

2

9

9

1

1

REF

CHANDLER ENGINEERING

ELECTRONICS MODULE ASSY, 220V

PN: 7500-3002

PROJ: 7500

REV K
SHEET 1 OF 2

12

SIZE D

TITLE BLOCK REV 3

E

D

C

B

A

1

2 3

4

5 6 7 8

9

10 11 12

9

H

G

H

1

G

8

F

42 43 44

19

F

34

15

1216

7

6

16

47

34

7

34

14

55

7

17

16

E

E

18

9

1

19

D

C

52

52

36

19

D

11

56

35

35

C

23

B

A

B

45

26

20 21

8 4342 44

2

5

4

27

28

35

20

A

6

3

1

2

3

4

5

6 7

8

9

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

0.030 2 PLC

0.005 ANGL

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

DRAWN: JJM

0.010
1/2

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/25/2013
10/14/2013
9/25/2013

CHANDLER ENGINEERING

ELECTRONICS MODULE ASSY, 220V

PN: 7500-3002

PROJ: 7500

REV K
SHEET 2 OF 2

12

SIZE D

TITLE BLOCK REV 3

H

1

2 3

NOTES:

FLEXIBLE TUBES ARE DESIGNATED IN BOM AS 7500-3321. USE PART NUMBER Q5-C-1031 FOR THESE TUBES, CUT TO OPTIMAL LENGTHS

1.
TO ENSURE NEAT ROUTING. RETAIN TUBES USING CABLE TIES. AVOID EXCESS LENGTH TUBES.

4

5 6 7 8

9

10 11 12

REV

ECN T6220; ADDED C16480, 7500-3181 AND

F

ECN T7160; DELETE C11306, ADD C15216,

G

C10905, AND C11128. CHG QTY C15876

FROM 3 TO 2, C15653 4 TO 2, C15875 1 TO 3,

P-1255 3 TO 1, C11127 5 TO 4, C11126 5 TO 4.

DESCRIPTION

7500-3184

10/27/2014

DATE

3/31/16

APPROVED

NSM

TC

H

G

F

E

D

C

B

A

H

ECN T8580; REPLACED WATLOWS W/

ETHERMS

7/1/2019

JS

1

1
1
1
2
1
1
2
2
4
5
1
2
3
6
5
1
1
1
3
1
1
1

1

1

2
2
2
2
1
2
1
2
1

2
4

1

1

2
2

3

3
2
1
1

1
4
4
1
1
1
1

4
1
2
1
4
2
4
1
3
1
1
4
1
2
6

SIZE D

G

F

E

D

C

B

A

ITEM

1

7500-3014

2

C10526

3

C12403

23

24

14

2

3

4

4

5

81

6

26

79

26

14

16

86

25

25

1

2

3

4

5

6 7

8

9

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

THIRD ANGLE PROJECTION

4

C08126

5

C12886

6

QX-C-1206

7

C08268

8

P-1954

9

C03321

10

C08132

11

7500-2209

12

C09285

13

7500-2188

14

H-8026

15

H-6015

16

P-2703

17

C13160

18

7500-2241

19

P-1488

20

7500-2242

21

R-0376

22

C16425

23

C17915

24

C18299

25

C11114

26

7600-1187

27

7600-1188

28

P-1887

29

C12801

30

C12815

31

P-2301

32

P-1246

33

C12443

34

7500-3321-G

35

P-2601

36

C12480

37

7500-3321-H

38

7500-3321-F

39

C11316

40

7500-3321-O
41
42

7500-3321-K
43

7500-3321-L
44

7500-3321-D
45

7500-3107-1
46

7500-3107-3
47

C10380
48

7500-3107-4
49

7500-3107-2
50

7500-3107-6
51

7500-3107-7
52

7500-3107-5
53

7500-3321-C
54

7500-3321-J
55

C15876
56

C15653
57

7500-3321-N
58

C15875
59

7500-3321-E
60

7500-3321-P
61

P-1265
62

P-1254
63

P-1255
64

7500-3321-I
65

7500-3321-A
66

7500-3107-8
67

C11569
68

C11127
69

C11126
70

7500-3277
71

7500-3278
72

C15885
73

C13239
74

H-4101
75

H-6003
76

C15937
77

C08226
78

C10902
79

H-6041
80

H-6015
81

05593-11
82

7500-3180
83

C15582
84

C16480
85

7500-3181
86

7500-3184
87

C15216
88

C10905

C11128

89

0.030 2 PLC

0.005 ANGL

SURFACE FINISH 63 RMS

PART NUMBER

DRAWN: JJM

MFG: LDR

0.010

ENGR: JJM

1/2

TYPE:

STRUCT:

11

DESCRIPTION

ENCLOSURE ASSEMBLY
SWITCH,RCKR,PNL,DPST,125V LAMP
SWITCH,RCKR,PNL,SPDT,ON-OFF
SWITCH,RCKR,PNL,SPDT,ON-OFF-ON
FAN,DC,60MM,24VDC
FINGER GUARD
RETAINER,SST,3/4ID,BHD,SW
CONN,BRS,1/4FPX1/4T,BHD,SW
UNION,SS,BHD,1/4TX1/4T,SW
RETAINER,SS,1/4T,BHD
CABLE ASSY,INTERNAL,ENCODER
STDF,HEX,ZN,0.18X0.31,4-40,M/F
TUBE, SS, 90 DEG.
SCREW,THMS,SS,8-32X0.375,PHIL
SCREW,THMS,SS,6-32X0.375,PHIL
CONN,SS,1/8FPT X 1/4T,BHD,SW
VALVE,NDL,SS,SPD CONTROL,ELBOW
TUBE, SS, 90 DEGREE
CONN,SS,1/4MPT X 1/4T,SW
CONN,MOD,RESERVOIR
TYGON,TBG,0.375x0.250IDx0.062W
CLAMP,HOSE,1/4,NYLON

CONTROLLER,ETHERM,EPC3008,1/8D,2OP,ETH/
RS485,CC

CONTROLLER,ETHERM,EPC3008,1/8DIN,2R­OP,ETH/RS485
BOTTLE,NALGENE,32 0Z,GREY

CAP, TOP, RESERVOIR
GASKET, RESERVOIR CAP
REG,PRESS,300/100PSI,1/8 FP
VALVE,SOL,SS,1/4F,3WY,24VDC
VALVE,SOL,SS,1/4F,2WY,24VDC
NIPPLE,SS,1/8MPX1/4MP,HEX
ELBOW,BR,1/8MPX1/4T
VALVE,SOL,SS,1/4F,3WY,24VDC
PLASTIC TUBE 3
PLUG,BR,1/4T
CABLE,DIN,SOLENOID
PLASTIC TUBE 9
PLASTIC TUBE 4
VALVE,RLF,SS,1/4TX1/4T,2WY-ANG
PLASTIC TUBE 11

PLASTIC TUBE 1
PLASTIC TUBE 6
PLASTIC TUBE 7
COPPER TUBE 1
COPPER TUBE 3
VALVE,CHK,BR,1/4TX1/4T,3000PSI
COPPER TUBE 4
COPPER TUBE 2
COPPER TUBE 6
COPPER TUBE 7
COPPER TUBE 5
PLASTIC TUBE 12
PLASTIC TUBE 2
UNION,HALF,1/4TX1/4MP,SMC
TEE,UNION,1/4T,SMC
PLASTIC TUBE 10
TEE,BRNCH,1/4Tx1/4MP,SMC
PLASTIC TUBE 8
PLASTIC TUBE 13
TEE,UNION,BR,1/4T
CONN,BRS,1/4 MP x 1/4 T,SW
ELBOW,BR,1/4MPX1/4T
PLASTIC TUBE 5
PLASTIC TUBE 14
COPPER TUBE 8
FTG,TUBE,RED,1/16-1/4,SST,SW
BLOCK,TERM,DIN,280,2COND,BLU,WAGO
BLOCK,TERM,DIN,280,2COND,BLK,WAGO
RAIL, DIN, CONSOLE
BRACKET, CONNECTOR
CONN,PLUG,14 POS,MINI-FIT-JR
CONN,RECPT,14 POS,MINI-FIT-JR
NUT, HEX, SS, 4-40
NUT,HEX,SS,6-32
ADPTR,DSUB,9P,M/F
STOP,END,DIN RAIL
BLOCK,TERM,DIN,280,2COND,GRND,WAGO
NUT,KEPS,SS,6-32
SCREW,THMS,SS,6-32X0.375,PHIL
SCREW,PHMS,SS,6-32X1.500,PHIL
PLATE,SUPPORT,VALVE
ELBOW,SMC,1/8MNPTX1/4T
TEE,BRANCH,1/4Tx1/8MP,SMC
BRACKET, MOUNTING REGULATOR
BRACKET, MOUNTING SOLENOID
ELBOW,PL,1/4MPX1/4T,PNEU
BLOCK,TERM,END PLATE,WAGO 280-309
JUMPER,STAGGERED

9/25/2013
10/14/2013
9/25/2013

CHANDLER ENGINEERING

ENCLOSURE ASSEMBLY, TOP

PN: 7500-3003

PROJ: 7500

12

QTY

SEE NOTE

SEE NOTE
SEE NOTE

SEE NOTE

SEE NOTE
SEE NOTE
SEE NOTE

REF
REF

REF
REF
REF
REF

REF
SEE NOTE
SEE NOTE

SEE NOTE

SEE NOTE
SEE NOTE

SEE NOTE

REF

13

REV H
SHEET 1 OF 3

TITLE BLOCK REV 3

1

2 3

4

5 6 7 8

9

10 11 12

54

H

G

58

H

40

G

F

F

26

E

E

D

C

17

16

76

70

73

D

C

B

A

71

25

72

B

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

1

2

3

4

5

6 7

8

9

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

0.030 2 PLC

0.005 ANGL

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

1/2

DRAWN: JJM

0.010

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/25/2013
10/14/2013
9/25/2013

CHANDLER ENGINEERING

ENCLOSURE ASSEMBLY, TOP

PN: 7500-3003

PROJ: 7500

REV H
SHEET 2 OF 3

12

SIZE D

TITLE BLOCK REV 3

1

2 3

4

5 6 7 8

9

10 11 12

H

G

77

88

89

78

69

68

ALTERNATE

40

44

H

G

A

F

F

60

E

E

SECTION A-A

56

D

C

59

87

D

A

43

34

C

56

64

58 54

B

B

A

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY
FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

1

2

3

4

5

6 7

8

9

10

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

0.030 2 PLC

0.005 ANGL

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

1/2

DRAWN: JJM

0.010

MFG: LDR

ENGR: JJM

TYPE:

STRUCT:

11

9/25/2013
10/14/2013
9/25/2013

CHANDLER ENGINEERING

ENCLOSURE ASSEMBLY, TOP

PN: 7500-3003

PROJ: 7500

REV H
SHEET 3 OF 3

12

SIZE D

TITLE BLOCK REV 3

1

2

3

NOTES:

1. CLEAN BEARINGS OF ALL GREASE USING RESIDUE-FREE SOLVENT.
APPLY 8 DROPS OF KRYTOX GREASE (C11039) TO BEARING, ROTATE TO DISTRIBUTE THE GREASE.

2.

3. MOUNT BEARING AS ILLUSTRATED IN SECTION A-A, NOTING THE ORIENTATION OF THE BEARING.

4.DVERIFY THAT THE MAGNETIC ROTOR TURNS FREELY.

4

10

4X

56

REV

C

ECN T5606; CLARIFIED ASSEMBLY

PROCEDURE

ECN T5748; REPLACED 4 70-197-1501 WITH

C13582

2/7/14

APPROVEDDATEDESCRIPTION

LDR11/9/2013

TC

D

D

9

A

2

3

7

3X

C

C

A

5

11

8

4

12

4X

B

BEARING CAGE

B

TOWARDS THE TOP

1

ITEM PART NUMBER DESCRIPTION QTY

1 7500-3117 FLANGE, SUPPORT, MAG DRIVE 1
2 7500-2012 ROTOR ASSEMBLY, OUTER 1
3 7500-3140 PULLEY, TIMING BELT, MAG DRIVE 1
4 C15880 RING,RET,EXT,5.500,SPIROLOX 1
5 7500-2308 DISK,BEARING RETAINING 1
6 H-6037 SCREW,SHCS,SS,6-32X0.750,ALLEN 6

6X

6

A

THIS DOCUMENT AND THE DRAWINGS AND
TECHNICAL DATA CONTAINED HEREON ARE THE
PROPERTY OF CHANDLER ENGINEERING COMPANY
LLC. REPRODUCTION OR DISSEMINATION IN ANY

SECTION A-A

1

2

FORM EXCEPT AS EXPRESSLY AUTHORIZED BY THE
OWNER IS FORBIDDEN. THE HOLDER AGREES TO
RETURN THE DOCUMENT TO THE OWNER ON
DEMAND. COPYRIGHT BY CHANDLER ENGINEERING
COMPANY LLC

43

BREAK EDGES, DEBURR

UON DIMS ARE IN INCHES

1 PLC
3 PLC

SURFACE FINISH 63 RMS

THIRD ANGLE PROJECTION

7 70-197-1501 SCREW,SKHSS,SS,5/16-18X0.37,HX 3
8 P-1486 CONN,SS,1/4TX1/8MP,SW 1

9 7500-2309 DISK, BELT GUIDE, MAG DRIVE 1
10 H-6016 SCREW,FHMS,SS,6-32X0.375,PHIL 4
11 C15881 BEARING,BALL,155MM X 139MM 1
12 C13582 SCREW,SKHSS,SS,5/16-18,DOG 4

9/26/2013
10/18/2013 MFG: LDR
9/26/2013

CHANDLER ENGINEERING

MAGNETIC DRIVE ASSEMBLY

PN: 7500-3229

PROJ: 7500

6

0.030 2 PLC 0.010

0.005 ANGL

1/2

DRAWN: GAD

ENGR: GAD

TYPE:

STRUCT:

5

A

SIZE BREV D

SHEET 1 OF 1

TITLE BLOCK REV 3

R

H

W

H

R

Part Number Title

7550-ACCESS ACCESSORIES, MODEL 7550 VISCOMETE

Page

1 OF 1

Revision Date Description Revised By: Ch ecked By:

B 07/27/15

ECN T6695

AMH AM

ITEM # PART NO DESCRIPTION QTY UOM PULLED CK’D

1 35-0180 FLUID,NEWTONIAN,200 CP 2
2 71-490 SCREWDRIVER,PRECISION ELECTRON 1
3 7500-2065 PROCEDURE,FINAL TEST (SUMMARY) 1
4 7600-1160 TOOL,BEARING,EXTRACTION 1
5 7600-1164 PLUG,PORT,SYRINGE 1
6 C10127 CABLE,DB9 M/F 25FT MOLDED 2
7 C10480 SYRINGE,60CC/2OZ,LUER SLIP 2
8 C10987 CLAMP, HOSE, 9/16" 8
9 C15013 HEX KEY SET 1
10 C13791 OIL,SYNTHETIC,HEAT TRANSFER,(5GAL) 1
11 C09614 INTERFACE,USB/RS232,4 PORT 1
12 C11321 GREASE, ANTI-SEIZE 1
13 C11567 HOSE,0.250IDx2PLY,WLDG ,R ED,4 0’ 1
14 P-0193 GLAND,SST,TUBE,1/4TX9/16-18RH 2
15 P-0915 PLUG,SS,1/4T,HP,HIP 2
16 P-1280 FILTER,AIR,.25FPX.25FP 1
17 P-3217 GREASE,LITHIUM,WHT,14o z 1
18 P-3412 ADAPT,BRS,1/4HOSEX1/4MP,S

8
19 7500-2204 TOOL, BOB INSTALLATION 1
20 C12679 WRENCH, FLARE NUT, 5/8-INC

1
21 7500-2205 TOOL, THERMOWELL INSTALLATION 1
22 C12806 ORING,FFKM COMP,AS568-125(HT-PLUG TOP) 5
23 C12807 ORING,FFKM COMP,AS568-135 (HT-PLUG BOTTOM) 5
24 C10788 ORING,VITON,AS125-75 (PLUG TOP) 25
25 C12385 ORING,VITON,AS135-75 (PLUG BOTTOM) 25
26 7600-1223 PIVOT,JEWEL BEARING BOB 2
27 188-13359 SCREW,SKHSS,SS,6-32X0.125,DOG 2
28 7500-2296 INSERT, TUNGSTEN CARBIDE 1
29 70612-09 SCREW,SHCS,SS,4-40X0.250,ALLEN 7
30 43098-00 SCREW,SHCS,SS,8-32X0.375 8
31 7500-2024 PLUG SUPPORT ASSEMBLY 1
32 C15527 ORING,FFKM COMP,AS568-025 (HT-BAFFLE TOP)
33 C15503 ORING,FFKM COMP,AS568-031 (HT-BAFFLE BOT)
34 Q6-C-1098 WRENCH, OPEN,5/8,15/75 DEG
35 C15009 PLIERS, 8”, NEEDLE NOSE
36 7600-1013 SPRING ASSEMBLY, F1
37 C11181 WRENCH,STRAP,1/8-5"
38 7500-2111 BUSHING, INNER MAGNET
39 7500-2292 SEAL EXTRACTOR ASSY
40 7500-3316 FIXTURE, CODEWHEEL, ENCODE

5 EA

5 EA

1 EA

1 EA

1 EA

1 EA

5 EA

1 EA

1 EA

PT
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
CN
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA

INITIAL INITIAL

DATE DATE

cut out postcards on dotted lines

Please Send Us Your Comments on This Manual

Model Number ____________________________ Serial Number __________________________
Printing Date of this manual (from the Title Page) ______________
Please circle a response for each of the following statements. Use:
(1)= Strongly agree (2) =Agree (3) =Neutral, no opinion (4) =Disagree (5) =Strongly disagree
a) The manual is well organized. 12345
b) I can find the information I want. 12345
c) The information in the manual is accurate. 12345
d) I can easily understand the instructions. 12345
e) The manual contains enough examples. 12345
f) The examples are appropriate and helpful. 12345
g) The manual layout is attractive and useful. 12345
h) The figures are clear and helpful. 12345
i) The sections I refer to most often are ________________________________________________
______________________________________________________________________________
Other comments _________________________________________________________________
______________________________________________________________________________
Contact us at our website: www.chandlereng.com
Email: [e-mail]

Please add me to your mailing list-

for Product Updates and New Product Releases, Information,
Technical Articles, and General Announcements of interest to users of this instrument.

Name ______________________________________________________________
Company ____________________________________________________________
Address _____________________________________________________________
Email address _________________________________________________________
My instrument is Chandler Model ________________________
Serial Number __________________________

cut out postcards on dotted lines

Warranty

CHANDLER

ENGINEERING

All products of Chandler Engineering are warranted for a period of one year from date of shipment to be free from
defective workmanship and material. Providing written notice is made and authorization by us is given, any of our
products claimed to be defective may be returned freight prepaid to our factory. If found to be defective and after
examination by us, our obligation will be limited to repairing or replacing the product, at our option, free of charge,
F.O.B. our factory.

COMMERCIAL INSTRUMENTATION

MANUFACTURED BY OTHERS

Commercial instrumentation manufactured by others is covered by separate manufacturer warranty, generally for
one year. Contact Chandler Engineering for instructions on obtaining service directly from the manufacturer.

Our warranty does not cover damage or failure caused by abuse, misuse, abnormal usage, faulty installation, im­proper maintenance, or any repairs other than those provided by authorized Chandler Engineering personnel.

This warranty is in lieu of all other warranties, expressed or implied, and of all obligations or liabilities on its part for
damages including but not limited to consequential damages, following the use or misuse of instruments manu­factured by Chandler Engineering Company L.L.C.

NO WARRANTY OF MERCHANTABILITY OR FITNESS

FOR A PARTICULAR PURPOSE SHALL APPLY.

Our total liability on any claim shall not exceed the price allocable to the product or service or part thereof that
gives rise to the claim.

Houston Sales and Services

2001 North Indianwood Avenue, Broken Arrow, OK 74012
Tel: [phone] Fax: [phone]

e-mail: [e-mail] www.chandlereng.com

Printed in the U.S.A. © 2008, by AMETEK, Inc. All rights reserved. XM808PDF (360000)

4903 W. Sam Houston Parkway, N., Suite A-400, Houston, TX 77041
Tel: [phone] Fax: [phone]