4909 CPVC Conductivity Cell
Insertion/Removal Assembly
Operations Manual
70-82-25-19
Rev. 1
7/99
About This Document
Abstract
The purpose of this document is to support the installation operation and maintenance of the 4909 CPVC
Conductivity Cell Removal/Insertion Assembly.
Revision Notes
The following list provides notes concerning all revisions of this document.
Rev. ID
Date
Notes
0
11/96
This revision is the initial release of the Honeywell version of the L&N manual
p/n 277731 Rev. E1. There were no major changes to the L&N version when
it was Honeywellized.
1
6/99
Edits were made to standardize terminology and to add the new Model
Selection Guide.
References
Honeywell Documents
The following list identifies all Honeywell documents that may be sources of reference for the material
discussed in this publication.
Document Title
ID #
9782 Series Conductivity/Resistivity Analyzer/Controller Operator’s Manual
70-82-25-74
70-82-25-51
7079-17 Two-Wire Transmitter for Conductivity/Resistivity Operation and
Maintenance Manual
Non-Honeywell Documents
The following list identifies select non-Honeywell documents that may be sources of reference for the
material discussed in this publication.
Title
Author
Publisher
ID/ISDN #
Contacts
The following list identifies important contacts within Honeywell.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
iii
Organization
Telephone
Address
Honeywell TAC
1-800-243-9883 Voice
1100 Virginia Drive
Fort Washington, PA 19034
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Contents
1.
2.
INTRODUCTION....................................................................................................1
1.1 Overview.........................................................................................................................................1
1.2 4908 Conductivity Cell...................................................................................................................1
1.3 31074357 Removal Device............................................................................................................2
SPECIFICATIONS AND MODEL SELECTION GUIDE.........................................7
2.1 Specifications..................................................................................................................................7
Cell Constants....................................................................................................................................7
Electrode Material .............................................................................................................................7
Wetted Parts.......................................................................................................................................7
Pressure and Temperature (See Fig. 1-1) ..........................................................................................7
Maximum Pressure............................................................................................................................7
Mounting ...........................................................................................................................................7
Purge Port ..........................................................................................................................................7
Insertion Depth ..................................................................................................................................7
Electrical Connections.......................................................................................................................7
Integral Automatic Temperature Compensation ...............................................................................8
Leadwire............................................................................................................................................8
Weight ...............................................................................................................................................8
2.2 Model Selection Guide ...................................................................................................................8
...........................................................................................................................................................8
3.
INSTALLATION ...................................................................................................11
3.1 Requirements ................................................................................................................................11
3.2 Location and Position ...................................................................................................................11
Considerations .................................................................................................................................11
3.3 Prepare Assembly .........................................................................................................................12
Initial Prep .......................................................................................................................................12
Mounting into the Process...............................................................................................................12
3.4 Insertion ........................................................................................................................................13
3.5 Removal ........................................................................................................................................14
3.6 Electrical Connections..................................................................................................................14
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4.
MAINTENANCE AND REPLACEMENT PARTS .................................................17
4.1 To Clean The Cell.........................................................................................................................17
4.2 Replacing Removal Device Parts..................................................................................................17
Ball Valve........................................................................................................................................17
Nipples.............................................................................................................................................17
Bushing And Washer.......................................................................................................................17
4.3 Replacement Parts.........................................................................................................................18
5.
PLATINIZATION AND PLATINUM BLACK.........................................................19
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Tables
Table 4-1 Replacement Parts __________________________________________________________ 18
Table 4-2 Voltage and Time Limits for Platinizing Cells ____________________________________ 18
Figures
Figure 1-1 Temperature/Pressure* Range__________________________________________________ 2
Figure 1-2 4909 CPVC Conductivity Cell Insertion/Removal Assembly with Conductivity Cell Installed3
Figure 1-3 4909 CPVC Conductivity Cell Insertion/Removal Assembly with Universal Head_________ 3
Figure 1-4 4908 Conductivity Cell _______________________________________________________ 4
Figure 1-5 31074357 Removal Device ____________________________________________________ 4
Figure 1-6 Universal Head _____________________________________________________________ 5
Figure 3-1 Outline and dimension drawing for 4909-X-X-X-X-03-X-X Conductivity Cell, Insertion Type
with CPVC Removal Device _______________________________________________________ 15
Figure 3-2 Outline and Dimension drawing for 4909-X-X-X-X1-03-X-X Conductivity Cell, Insertion
Type with CPVC Removal Device and Universal Head __________________________________ 16
Figure 5-1 Installation Diagram-Cat. 4909 Cells with Junction Box Head Connected to 7082
Conductivity/Resistivity Analyzer___________________________________________________ 20
Figure 5-2 Installation Diagram-Cat. 4909 Cells with Junction Box Head Connected to 9782
Conductivity/Resistivity Analyzer___________________________________________________ 21
Figure 5-3 Installation Diagram-Cat. 4909 Cells with 7 or 20 Foot Leads Connected to 7082
Conductivity/Resistivity Analyzer___________________________________________________ 22
Figure 5-4 Installation Diagram-Cat. 4909 Cells with 7 or 20 Foot Leads Connected to 9782
Conductivity/Resistivity Analyzer___________________________________________________ 23
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4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
vii
Introduction
1. Introduction
1.1 Overview
The 4909 Conductivity Cell Insertion/Removal Assembly is designed for use in a pipeline or closed vessel
where it is desirable to remove the cell for inspection and maintenance without shutting down the system
and releasing the pressure. The assembly comprises a 4908 Conductivity Cell and a 31074357 Removal
Device which are shown assembled in Figs. 1-2 and 1-3. It is to be used in applications for which
maximum pressure does not exceed 125 psig, and can be reduced to 50 psig during insertion and removal of
the cell. Maximum operating temperature is determined by the temperature compensator range. Do not use
in solutions above 80°C.
The depth of insertion is given in Figs. 3-1 and 3-2.
The conductivity cell is made of polyethersuflone (PES), which is resistant to most corrosive inorganic
chemicals over a wide range of temperatures (common exceptions are chlorinated hydrocarbons and
ketones). Sample solutions come into contact with the PES and the platinum or nickel electrode surface of
the cell. (Any cell constant can be supplied with either electrode material). The only materials of the 4909
Assembly with which the sample solution may come into contact are in the removal device which is
comprised of CPVC plastic, Teflon, EPDM and Viton materials. The automatic temperature compensator
may be built into the cell as shown in Section 2.2, Model Selection Guide.
CAUTION
Specific parameters of your process may prohibit the use of nickel electrodes. For example, always use a
platinum cell (Table II = 44) if the cell will measure or be exposed to regeneration acids or bases.
1.2 4908 Conductivity Cell
The molded conductivity cell and its one-inch diameter by 3-inch long adapter comprise a one piece cell
unit and are made of polyethersulfone (PES). This adapter serves as a stop during the removal operation.
The cell can be supplied with a two, three or four conductor, Tefzel-sheathed cable, Fig. 1-2. Either of two
different lengths of cable can be furnished as specified in the Model Selection Guide (MSG) number, see
Section 2.2, Model Selection Guide. Or the insertion/removal assembly can be supplied with a Universal
Head, Fig. 1-3.
The cells having constants of 5, 10, 20, 25 or 50 cm-1 are intended for making measurements in highly
conductive solutions. They differ in construction from those having constants of 0.01, 0.1, or 1. On the 5
to 50 constant cells, the electrodes are short tubes located midway inside the two parallel tubular channels
that run lengthwise through the cell, and are open to the sample at both ends of the cell. The channels are
larger on the 25 constant cell and they are elliptical on the 5 and 10 constant cell. The 0.01, 0.1, and 1.0
constant cells have a removable cell guard which is screwed onto the cell body to protect the electrode
surfaces. Cells with a guard tube must be used with the guard in place or the cell constant may differ from
that specified. Electrodes are three discs on the 1 constant cell, parallel plates on the 0.1 constant cell, and
a pair of concentric wires wound on the cell body on the 0.01 constant cell.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
1.3 31074357 Removal Device
This device consists of a ball valve which is connected to the closed system by a 1-1/2 inch CPVC schedule
80 mounting nipple and to a housing by a 6 inch long schedule 80 CPVC nipple into which the support tube
for the cell mounting is inserted. The compression handle provides a seal around the cell support tube.
Depending on the Key Number selected in Section 2.2, MSG, the 31074357 Removal Device may or may
not include the 4908 Cell preinstalled in the device.
If Key Number 04908 is selected, the 4908 Cell (Fig. 1-4) is shipped apart from the removal device.
If Key Number 04909 is selected, the 4908 Cell is preinstalled into the removal device, Fig. 1-3. Details of
each type of installation are given in Section 3.3.
130
120
110
100
90
80
70
60
50
40
30
20
10
0
-10 -5
0
10
20
30
40
50
60
70
80
DEGREES CELSIUS
a/n 23349
Figure 1-1 Temperature/Pressure* Range
* 50 psig max. during insertion or removal of 4908 cell.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
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Introduction
Valve
1/4" NPT Plug
Compression Handle
Support Grip
Conductivity Cell
Purge Port
Cable
Cable Grip
6" Nipple
1-1/2" NPT Nipple
Housing
Adapter (Contains Automatic Temperature Compensator when Specified)
a/n 23350
Figure 1-2 4909 CPVC Conductivity Cell Insertion/Removal Assembly
with Conductivity Cell Installed
Universal Head Assembly
a/n 23351
Figure 1-3 4909 CPVC Conductivity Cell Insertion/Removal Assembly with Universal Head
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
Conductivity
Cell
Cable
Adapter *
* Automatic Temperature Compensator,
when specified by catalog number, is
mounted inside adapter.
a/n 23352
Figure 1-4 4908 Conductivity Cell
Note: Apply a thin film of Silicone grease
to all surfaces of bushing and to
Do not nick
outside of
support tube
diameter of support tube as shown.
Apply grease
(See Note above)
Modify per sketch*
Tighten securely to pipe
Apply teflon tape to
both ends of support
tube. Tighten all pipe
thread fittings two turns
beyond hand tight.
These parts should be
hand-tightened only
Slice through one
side as shown
*
Compression
Bushing
a/n 23353
Figure 1-5 31074357 Removal Device
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Introduction
Set Screw
Base
#6-32
Binding Head
Screw &
Terminal
Board
Assembly
Gasket
Washer
Nipple (3/4" NPT)
Cap
#6-32 Screw
D
C
A
B
Chain
#6-32 Screw
View of Base
with Cap Removed
Wire
a/n 23354
Figure 1-6 Universal Head
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Specifications and Model Selection Guide
2. Specifications and Model Selection Guide
2.1 Specifications
Cell Constants
0.01, 0.1,1.0, 5, 10, 20, 25 and 50 cm-1.
Electrode Material
Nickel or Platinum, as specified.
Wetted Parts
Cell Body:
Polyethersulfone (PES).
See above.
Electrodes:
Mounting Materials:
Chlorinated Polyvinyl Chloride (CPVC).
Internal Sealing Materials: Viton, Teflon & EPDM
Pressure and Temperature (See Fig. 1-1)
125 psig (862 kPa) max. @ 23°F (-5°C)
90 psig (621 kPa) max. @ 122°F (50°C)
50 psig (345 kPa) max. @ 176°F (80°C)
Maximum Pressure
During Insertion or Removal: 50 psig.
Mounting
1-1/2” NPT male pipe. Overall length of removal device: approximately 20 or 22 inches (allow additional
clearance for cell withdrawal). See Figs. 3-1 and 3-2.
Purge Port
1/4” NPT female opening.
Insertion Depth
Varies between 4.5” and 6.8” nominal, depending upon cell constant. Greater insertion depths are optional.
See Figs. 3-1 and 3-2.
Electrical Connections
Three leads with integral automatic temp. compensator. Two leads without integral automatic temp.
compensator. Four leads with integral automatic temp. compensator)Table III = 333).
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
Integral Automatic Temperature Compensation
Refer to Section 2.2 – Model Selection Guide
Leadwire
Tefzel covered, 18-gage cable (7 feet, 20 feet, or Universal Head, as specified).
Weight
Approximately 3.5 lb (1.6 Kg) (including cell).
2.2 Model Selection Guide
KEY NUMBER
Selection
Availability
Description
04909 Complete Conductivity Cell Assembly
04908 Replacement Cell Only
04909
04908
(Note 2) (Note 3)
(Note 1) (Note 3)
TABLE I
0.01
0.1
1
001
X01
XX1
XX5
X10
X20
X25
X50
Cell Constant
5
g
g
g
g
10
20
25
50
TABLE II
Electrode Material
Nickel
Platinum
33
44
TABLE III
Automatic Temperature Compensator (ATC)
No Temperature Compensator
Available for 9782 and 7082 Only
000
333
009
013
014
071
072
073
074
088
090
091
093
113
114
160
164
168
f
f
Available for 7079C Transmitter or already withdrawn analytical
instrumentation. (Refer to Tables 1 and 6 under Steps to Selecting
Appropriate Conductivity Instrumentation & Cells for available
Temp. Compensator/Conductivity range.)
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4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
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Specifications and Model Selection Guide
049
TABLE IV
Selection 09 08
Leadwire Length
’7 ft. Leadwire
20 ft. Leadwire
X7
20
Junction Head (Aluminum)
X1
TABLE V
Valve/Cell Material
Material
4909 Stainless Steel (SS) Valve
Assembly
4908 PES Replacement Cell for
4909 SS Valve Assembly
4909 CPVC Valve Assembly
Includes SS Valve assembly and
Standard insertion cell
02
02
03
c
d
Standard insertion cell only
c
d
Includes CPVC assembly and
standard CPVC Support tube
(15 3/8") and cell
4908 PES Replacement Cell for
CPVC Valve Assembly
Cell only
03
TABLE VI
Special Mounting Options - select one option per unit
None
SS support tube for 4909 SS Valve
assemblies only. Use Table V
Option = 02
000
930
e
h
4908 replacement cells for 4909 SS
Valve Assembly containing SS Support
tube. Use Table V Option = 02
Special insertion lengths for new/
replacement cells for 4909 SS
Valve Assemblies. Only available
for Table V Option = 02
930
910
920
925
940
950
e
h
Uses special insertion cell to
increase standard insertion
cell depth by 4.4"
Uses special insertion cell to
increase standard insertion
cell depth by 8.8"
(Note 4)
Uses special insertion cell to
increase standard insertion
cell depth by 13.2"
(Note 4)
Uses special insertion cell to
decrease standard insertion
cell depth by 4.4"
h
j
h
Extended Length CPVC Support tube.
Only available for Table V Option = 03
Supplies special CPVC
support tube (21 3/8") to
increase cell insertion depth
by 6.0" in a new CPVC Valve
Assembly. Note: Allow
additional 6.0" for cell removal
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
TABLE VII - OPTIONS
049
Tagging
None
Linen
0_
L_
S_
_ 0
_ 1
Stainless Steel
No
Certificate of Calibration
Yes
Notes:
Replacement cells only, caution look at Restrictions for insertion depth dimensions based on valve
assembly type.
1.
When converting from 4806 to 4909, order 4908 directly.
Replacement 4908 cells for existing 4908’s and 4909’s manufactured before 8/85 must specify Table V = 02.
This option is application sensitive. You must contact Analytical Instruments Marketing for approval.
2.
3.
4.
RESTRICTIONS
Restriction Letter
Available Only With
Selection
Not Available With
Selection
Table
Table
V
Standard insertion cell for SS valve assemblies consists of a conductivity
cell of variable length based on the cell constant and a 13.2" PES tube
molded to the cell. The conductivity cell insertion depth is listed below:
c
001, X01, XX1 = 7.5"
XX5 = 6.5"
X10 = 7.7"
X20 = 8.0"
X25, X50 = 8.8"
V
Standard conductivity cell insertion depth dimensions according to cell
constants for CPVC assemblies is listed below:
d
001, X01, XX1 = 5.5"
XX5 = 4.5"
X10 = 5.7"
X20 = 6.0"
X25, X50 = 6.8"
V
III
02
I
I
X25, X50
e
f
g
h
j
For 9782 and 7082 Analyzers only
Not for 9782 and 7082 Analyzers
V
V
02
03
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Installation
3. Installation
3.1 Requirements
To insure that a representative sample is being measured at all times, the solution must move through and
completely purge out the cell channels or guard tube. If the measurement is made in a rapidly moving
liquid, the existing circulation of the solution can be utilized by mounting the assembly as described in the
next section so that the flow of the solution forces liquid through the cell. However, when measurements
are to be made in quiescent solutions, means must be provided for forcing the solution through the
conductivity cell so no air bubbles accumulate or care taken to place the cell in a position to measure the
true value of the solution.
Do not use the cells in solutions which will attack the fittings used or the wetted cell materials. The PES
and platinum or nickel of the electrode are the cell materials with which the solution will come into contact.
The wetted materials of the removal device with which the process may come into contact with are CPVC,
Teflon, EPDM and Viton.
Do not use the cell in a solution having temperatures greater than 80°C. The maximum limit set by the
temperature compensator range must be observed.
For cells having a constant of 0.01, 0.1 or 1, make certain that the guard is in place and is not loose on the
cell body. The guard tube must be hand-tightened only. There is a 1/16 inch space between the guard tube
and the cell body.
Do not install the 4909 Assembly where pressures and/or temperatures may occur outside the operating
range given in Fig. 1-1. Both pressure and temperature must be within the shaded area of the curve.
Avoid installations where the 4909 Assembly will be exposed to pressure shock caused by water hammer.
3.2 Location and Position
Refer to Fig. 3-1 or Fig. 3-2 for mounting dimensions.
Considerations
The cross-channel in the high constant cells or the guard tube holes in the low constant cells must be
covered by the solution during measurements.
Vertical insertion (from above) or horizontal insertion can be used. Make certain the tank or pipeline is full
under all process conditions. If a pipeline is not always full, use a vertical mounting and insert the cell far
enough into the vertical pipe that the cross-channel is below the horizontal exit pipe which may empty out.
Make certain an air bubble in the pipe does not prevent the cell from filling properly. (If the cell becomes
dry after use, it may require cleaning in accordance with Section 4.1 before again being placed in service.)
For best results, whether vertical or horizontal mounting is used, position the cell so that the sample will
flow through the channels or guard tube towards the mounting end of the cell, exiting through the cross-
channel or guard-tube holes. In applications where vertical mounting is required, avoid a position with the
cell channels pointed up, as this will permit solution to flow down into the open end of the cell and may
result in clogging by solids settling in the cell channels.
Allow for insertion depth from the outside wall of the mounting surface as indicated by the dimensions in
Fig. 3-1 or 3-2.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
Allow at least 1/2 inch clearance beyond the end of the cell and 1/8 to 3/16 inch radius clearance
surrounding the cell to permit circulation of the solution.
Avoid locations where excessive temperature changes may occur.
Allow clearance behind the support grip to permit removal of the cell per dimensions in Fig. 3-1 or 3-2.
Locate the insertion/removal assembly on the pressure side of pumps; not the vacuum side.
Avoid locations where the operator must take an awkward position to perform the cell insertion or removal
operation.
The 4909 Insertion/Removal Assembly is designed to support only its own weight. Do not install in
locations where it would be used as a foot rest or where it would be used as a hand grip. Do not hang or
support any other piping or objects from the assembly.
The removal device should not be mounted onto pipelines or vessels displaying excessive vibration unless a
support is provided on the 6” long valve nipple.
3.3 Prepare Assembly
If X7 or 20 are selected in Table IV of the Model Selection Guide, then the 4908 Conductivity Cell (Fig. 1-
4) must be joined with the support tube of the 31074357 Removal Device as discussed in Section 1.3.
Refer to Fig. 1-5.
Initial Prep
1. Loosen compression handle by turning it counterclockwise until it is free from housing.
2. Withdraw the support tube, bushing, washer and handle assembly keeping the bushing and washer in
place on the support tube. When greater insertion depth of the conductivity cell into the process
solution is desired, p/n 074344 Support Tube will give an additional 6 inches immersion beyond the
standard depth. See Figs. 3-1 and 3-2. If 074344 Support Tube is to be used, it must be secured to the
support grip.
3. Slide the bushing and washer off of the standard support tube.
4. Turn the compression handle counterclockwise to remove it from the support grip.
5. Using a strap wrench, loosen and remove the standard support tube.
6. Install 074344 Support Tube by wrapping one end with Teflon tape overlapping by 50% on each wrap.
Wrap the tape in a clockwise direction as viewed from the threaded end of the support tube.
7. Thread this end into the support grip by hand and tighten an additional two turns by using a strap
wrench. Do not use stillson or chain type wrenches as they may damage or score the support tube and
prevent a good seal with the bushing.
8. Replace the compression handle, washer and bushing removed earlier. Note the proper orientation of
the bushing with the tapered surface facing away from the compression handle.
Mounting into the Process
The valve nipples and housing can now be mounted into the process pipeline or tank wall.
1. Remove the protective cap and apply Teflon tape to mounting nipple. Wrap the tape on the threads in a
clockwise direction as viewed from the threaded end. Overlap the tape by 50% on each wrap. Cover
the threaded area twice in this manner.
2. Install the mounting nipple and valve assembly hand tight.
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Installation
3. Using a strap wrench on the mounting nipple, tighten the assembly an additional 1-1/2 to 2 turns. Do
not use stillson or chain type wrenches as they may damage and weaken the CPVC plastic. Do not use
the valve handle for leverage.
4. Close the ball valve; handle perpendicular to valve.
A purge port is provided on the removal device housing. Water or some other fluid source can be piped to
this port for the purpose of cleaning out the valve assembly from accumulated debris. For most
conductivity applications, the process stream will not have high particle content and the purge port is not
used.
If purging is required remove plug and install a purge line to the ¼” NPT opening. Note that the purge fluid
temperature and pressure must not exceed the 4909 Assembly temperature and pressure specifications as
shown in Fig. 1-1. Also, the purge line must have a shutoff valve located near the removal device.
Another use for the purge port can be realized if a pressure gage is installed in the ¼” NPT opening. It will
serve as a local indication of process pressure to confirm that the pressure is below 50 psig during insertion
or removal of the cell.
Make sure the bushing and washer are in place on the support tube, then feed the cable of the 4908
Conductivity Cell through the support tube and turn the tube hand tight onto the conductivity cell. Using a
strap wrench, tighten the 4908 Cell an additional 1-1/2 to 2 turns. Do not score or gouge the support tube
surface because the bushing makes a seal on the tube surface.
Tighten the cable grip to provide strain relief from the cell cable.
If X1 is selected in Table IV of the Model Selection Guide, then the 4908 Conductivity Cell has been pre-
mounted by Honeywell onto the support tube. Also cable wiring to the universal head terminal board has
been completed. The valve assembly can then be mounted to the process by following steps under
“Mounting into the Process” mentioned earlier.
3.4 Insertion
1. Make sure the bushing and washer (Fig. 1-5) are in place on the support tube. A thin film of silicone
grease is applied at the factory to the bushing and to the support tube area covered by the compression
handle. If this film has been wiped off or if dirt or grit is present, clean these areas and reapply a new
film of silicone grease (p/n 090011, 0.3 oz. tube).
2. Obtain the cell and support tube assembly prepared earlier. Separate the compression handle from the
support grip by turning the support grip counterclockwise approximately two turns. Slide the
compression handle along the support tube until the bushing and washer are sandwiched between the
handle and 4908 Cell Adapter.
3. Slide the cell and tube assembly into the removal device housing and tighten the compression handle
clockwise until drag is felt on the tube. This can be determined by rotating the tube by hand.
4. REDUCE PROCESS PRESSURE TO 50 PSIG OR LESS. Open the ball valve; handle parallel to
valve.
5. Push the cell and support tube assembly all the way in using the support grip.
6. Tighten the support grip by turning clockwise two turns.
ATTENTION
This step is important to prevent blow-back of cell and support tube assembly. The bushing acts as a safety
stop against the cell adapter if the support tube does blow back.
7. Return the process to normal operating pressure.
8. Further tighten the compression handle if leakage occurs from the bushing seal area.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
3.5 Removal
1. REDUCE PROCESS PRESSURE TO 50 PSIG OR LESS. Shut off purge line, if used. Disconnect
wiring connections if X1 is selected for Table IV in the MSG.
2. DO NOT STAND BEHIND THE TUBE WHEN PERFORMING THIS STEP. While holding the
compression handle from turning, turn the support grip two turns counterclockwise. Loosen the
compression handle until the process pressure pushes the cell and support tube assembly out to its
internal stop. If necessary, pull out by hand until stop is reached.
3. Close the ball valve. If the valve does not close easily, make sure the support tube is pulled all the way
back.
4. Completely loosen the compression handle to withdraw the cell.
3.6 Electrical Connections
The terminal board connections for recorder or analyzer are given in the appropriate directions furnished
with the measuring instrument.
When the cell assembly includes a built-in temperature compensator, all leads are used. The cell is
connected between black and white and the compensator is between red and white, except when MSG Table
III=333. In this case, the built-in temperature compensator is between red and green. See Figs. 5-1 and 5-2
when wiring cells with MSG option=333.
To avoid the possibility of ac pick-up in the cell leads, separate them from all AC line voltage wiring or run
them in a separate grounded conduit.
Cells are available with leadwire up to 20 feet as specified in the MSG assembly. For distances greater than
20 feet, use the required length of cable and a junction box, both listed in Section 4.3. For assemblies
supplied with a Universal Head, Fig. 3-2, a junction box is not required.
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4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
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Installation
Approx 19.7" max.
(502mm)
X "
See Below
* Standard Insertion Depth
Allow a minimum
clearance of 36"
(914 mm) beyond
this point for
Table I
mm
140
140
140
X" Approx.
Approx 12.5"
(317mm)
5.5
001
0 1
5.5
removal of
5.5
Approx 4.1"
(105mm)
1
5
electrode.
1/4" NPT
114
4.5
5.7
Purge connection. Do not
exceed Temp./Press.
specifications of removal
device
1 0
20
145
152
Allow 42" (1067mm)
if alternate support
tube is used.
6.0
25
50
173
173
6.8
6.8
2.5"
(64mm)
* Add 6" (152 mm) to
Dimensions if 074344
Support Tube is Used.
Electrode Cable,
approx 0.25" (6.4mm)
O.D. max with 2, 3, or
4 conductors of
0.940"
(24mm)
Dia
1 1/2 NPT
Schedule 80 Nipple
#18 AWG wire
RED
Shunt
Comp.
RED
RED
Temp.
Comp.
Temp.
Comp.
WHITE
Series
Comp.
WHITE
BLACK
GREEN
WHITE
WHITE
BLACK
Cell
Cell
Cell
Cell
Linear Micromho,
Resistivity, or
Concentration Ranges
BLACK
BLACK
Non-Linear
Without Temp.
Compensation
Linear Ranges
Micromho Ranges
a/n 23355
Figure 3-1 Outline and dimension drawing for 4909-X-X-X-X-03-X-X Conductivity Cell,
Insertion Type with CPVC Removal Device
7/99
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
15
4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
Approx 19.7" max.
(502mm)
X "
See Below
* Standard Insertion Depth
Allow a minimum
clearance of 36"
(914 mm) beyond
this point for
Suffix A
X" Approx.
5.5
5.5
5.5
mm
Approx 12.5"
(317mm)
140
001
0 1
140
140
removal of
1
5
Approx 4.1"
(105mm)
electrode.
1/4" NPT
114
4.5
5.7
Purge connection. Do not
exceed Temp./Press.
specifications of removal
device
1 0
20
145
152
Allow 42" (1067mm)
if alternate support
tube is used.
6.0
6.8
6.8
25
50
173
173
2.5"
(64mm)
3"
(76mm)
* Add 6" (152 mm) to
Dimensions if 074344
Support Tube is Used.
0.940"
(24mm)
Dia
1-1/2" NPT
Schedule 80 Nipple
1/2" female NPT for user’s
flexible electrical conduit
connection. For insertion or
removal of cell, disconnect
conduit connections.
RED
Shunt
Comp.
RED
RED
Temp.
Comp.
Temp.
Comp.
WHITE
WHITE
BLACK
GREEN
Series
Comp.
WHITE
BLACK
Cell
Cell
WHITE
Cell
Cell
Linear Micromho,
Resistivity, or
Concentration Ranges
BLACK
BLACK
Without Temp.
Compensation
Non-Linear
Linear Ranges
(Table III = 333)
Micromho Ranges
Cell Wiring
a/n 23346
Figure 3-2 Outline and Dimension drawing for 4909-X-X-X-X1-03-X-X Conductivity Cell,
Insertion Type with CPVC Removal Device and Universal Head
16
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
7/99
Maintenance and Replacement Parts
4. Maintenance and Replacement Parts
If a series of below normal conductivity readings or above normal resistivity readings occur, this may
indicate that the cell is not filled with process solution. Check the cell installation. Refer to Sections 3.1
and 3.2.
The only maintenance which may be required is occasional cleaning in certain applications. The 0.01, 0.1,
and 1.0 cm-1 low constant electrodes are not platinized.
4.1 To Clean The Cell
CAUTION
The cell assembly is PES (polyethersulfone). Do not clean with acetone, chloroform, toluene, benzene, or any
chlorinated hydrocarbon.
The cell will require cleaning if sludge, slime, etc., accumulates in the flow channels. Since the materials of
construction are chemically inert, chemical agents may be used and are recommended for cleaning the cells.
The particular cleaning agent used must be selected according to the type of contamination to which the cell
is exposed. In general, soap and hot water cleaning solution is effective. Immerse the plastic body of the
cell in this solution. A 10 or 15 minute soaking period should be adequate. If necessary, a soft bristle brush
of appropriate diameter may be used to clean out the tubular channels of the 5, 10, 20, 25 and 50 constant
cells. Care must be taken not to scratch the electrode surfaces. Do not use a brush on the low (0.01, 0.1
and 1) constant cells and be especially careful not to bend the electrode plates of the 0.1 constant cell.
Rinse the cell thoroughly in tap water and then in distilled water if available. To remove the platinum black
from electrodes (5 to 50 constants only), refer to Section 5. Replatinizing after each cleaning (5 to 50
constant cells only) may not be necessary unless brushing was used.
4.2 Replacing Removal Device Parts
Ball Valve
If a new ball valve is installed, orient the valve body so that the heavy walled end is toward the process
connection for added support strength. See Teflon tape note below.
Nipples
If nipples are replaced, use exact replacement to ensure pressure and temperature ratings, proper immersion
length and proper operation of removal device.
Use only Teflon tape on all valve, nipple and support tube pipe threads. Other liquid or paste sealants may
contain solvents that weaken the CPVC material.
Bushing And Washer
Replace these parts if swollen, cracked or damaged in a way that prevents a good seal on the support tube.
Lightly grease the new bushing with silicone grease before installing.
Note that the support grip must be removed from the support tube before replacing the bushing and/or
washer. Orient the bushing so that the tapered surface faces away from the compression handle, Fig. 1-5.
7/99
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
17
4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
4.3 Replacement Parts
Table 4-1 Replacement Parts
Description
Part Number
Complete Assembly
See Figs. 1-5 and 1-6
Cat. 4908
31074357
See Fig. 1-6
31103011
065602
Cell Assembly
Complete CPVC Removal Device
Universal Head Parts
Platinizing Solution (3 oz. bottle)
Cell Guard Tube (0.01, 0.1, and 1.0 Constants Only)
Support Tube, 1/2” NPT Sch. 80, CPVC (12” Immersion)
Support Tube, 1/2” NPT Sch. 80, CPVC (6” Immersion)
Junction Box
074344
074343
31316260
Cell Extension Leadwire (Table III other than 333)
Three conductor 18 gage cable PVC (105°C max.)
Three conductor 18 gage cable Tefzel (150°C max.)
834059
834086
9782/7082 Standard Ranges
Up to 500 ft.
Three conductor, 18 gage cable (Belden 9493)
and Coax Cable (Belden 9259)
834059
835024
Up to 1000 ft
Four conductor (3 used), 16 gage cable,
Belden 9494 or equivalent and Coax Cable (Belden 9259)
9782/7082 Wide Ranges
834055
835024
Up to 500 ft - Four Conductor, 18 gage
Up to 1000 ft - Four Conductor, 16 gage
31834052
834055
Table 4-2 Voltage and Time Limits for Platinizing Cells
Cell Constant
DC Voltage
5
----
10
----
20
25
----
50
----
1.5
3.0
----
200 sec
80 sec
----
240 sec
100 sec
----
----
----
----
6.0
180 sec
120 sec
200 sec
150 sec
300 sec
240 sec
12.0
18
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
7/99
Platinization and Platinum Black
5. Platinization and Platinum Black
Only the electrodes having constants from 5 to 50 must be replatinized if the velvety-black deposit has been
rubbed off the electrodes in service or in cleaning, or if platinized electrodes are recommended and this
black deposit is not present when the cell is received. Always replatinize if a brush was used in cleaning the
electrodes. The indication of a need for replatinization of the electrodes is a long term drift of the
measuring instrument caused by an apparent increase in cell constant as the platinum black coating is
depleted from the electrode surfaces. The electrodes of the high constant cells are not visible since they are
located near the middle of the flow channels. Therefore the need for platinization is only indicated by the
effect on the measuring instrument. Do not platinize cells intended for measuring high purity water.
Before platinizing, clean the cell with detergent and brush as described in Section 4.1.
Support the cell in a cylindrical vessel with the end of the cell raised from the bottom. It is not necessary to
remove the cell from the fittings for platinizing. However, the guard tube must be removed from the low
constant cells. Pour in platinizing solution (p/n 31103011) to a level above the cross-channel.
To platinize the 5, 10, 20, 25 and 50 constant cells, immerse an auxiliary platinum electrode* in the solution
to a point about midway between the cross-channel or tube hole and the open end of the cell. Both
electrodes of the cell are platinized simultaneously by connecting the negative terminal of the battery (see
Table 4.2 for voltage) to both leadwires of the cell.
ATTENTION
* This third electrode should be chemically pure platinum. Its shape is unimportant. It may be one of the
electrodes in another conductivity cell or a platinum strip, sheet, rod, wire, etc.
Connect the positive terminal of the battery to the auxiliary platinum electrode. Note the time in seconds
listed in Table 4.2. During the platinizing operation, move the cell up and down gently to keep the solution
stirred. Then disconnect the battery and remove the cell. Rinse the cell thoroughly in tap water and then
rinse in distilled water.
Pour the platinizing solution back into its container as it may be used a number of times.
7/99
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
19
4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
Four Point Terminal Plate
with #6-32 Screw Terminals
Five Point Terminal Board.
Each Terminal Will Accept
#16 Gage Max. Wire
1000 ft. max.
RED
Note 3
B
Temp.
Comp.
B
D
D
C
A
B
Coax Cable Shield
D
C
A
GREEN
A
C
WHITE
BLACK
Cell
W
K
SH
G
R
Note 2
Internal Cell Assembly
Configuration
View of Junction Box Head
with Cap Removed
Note 1
Cell Assembly Connections
Conductivity/Resistivity
Analyzer
I
II
III
333
IV
X1
V
VI
GND
4905
-
-
-
Analyzer Input Connections
IV
V
I
II
III
4973
4974
-
333 - X1
-
VII
VI
I
II
III
333
IV
X1
V
4908
4909
-
-
-
NOTES:
1. For pure water samples in non-conductive (plastic, glass, etc.) piping, ground the black cell electrode lead near the cell. Alternatively,
connect to the 7082 ground screw as shown dotted. Do not ground 10, 25, or 50 constant cells.
2. 7082-16, 17, 18, 19 (only)
Use 22 gage minimum coaxial cable type RG59/U connecting shield to terminal "SH" only.
3. 7082-16, 17, 18, 19
For cable runs of up to 500 ft., use: 18 gage minimum, three conductor cable.
For cbale runs of 500 - 1000 ft., use: 16 gage minimum, three conductor cable.
7082-13, 14, 15 [coax and shield (SH) not used]
For cable runs of up to 500 ft., use: 18 gage minimum, four conductor cable.
For cable runs of 500 - 1000 ft., use: 16 gage minimum, four conductor cable.
4. Cell to analyzer cables are considered low level. Run seperate from high level wiring.
a/n 23345
Figure 5-1 Installation Diagram-Cat. 4909 Cells with Junction Box Head
Connected to 7082 Conductivity/Resistivity Analyzer
20
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
7/99
Platinization and Platinum Black
Five Point Terminal Board.
Each Terminal Will Accept
#16 Gage Max. Wire
Four Point Terminal Plate
with #6-32 Screw Terminals
SH
G
(Note 5)
#2 Temp
1000 ft. max.
Compensator
R
Note 3
D
G
RED
B
D
#1 Temp
Temp.
Comp.
Compensator
B
R
A
B
D
(Note 5)
Cell 2
Electrodes
W
K
GREEN
Note 2
C
C
WHITE
BLACK
Cell
C
A
W
Cell 1
Electrodes
A
K
Internal Cell Assembly
Configuration
View of Junction Box Head
with Cap Removed
Coax Cable
Shield
Note 1
Cell Assembly Connections
Conductivity/Resistivity
Analyzer
GND
I
II
III
333
IV
X1
V
V
VI
4905
-
-
-
-
-
Analyzer Input Connections
IV
I
II
III
4973
4974
-
333 - X1
VII
VI
I
II
III
333
IV
X1
V
4908
4909
-
-
NOTES:
1. For pure water samples in non-conductive (plastic, glass, etc.) piping, ground the black cell electrode lead near the cell. Alternatively,
connect to the 9782 ground screw as shown dotted. Do not ground 10, 25, or 50 constant cells.
2. 9782C-S0 (only)
Use 22 gage minimum coaxial cable type RG59/U connecting shield to terminal "SH" only.
3. 9782C-S0
For cable runs of up to 500 ft., use: 18 gage minimum, three conductor cable.
For cbale runs of 500 - 1000 ft., use: 16 gage minimum, three conductor cable.
9782C-W0 [coax and shield (SH) not used]
For cable runs of up to 500 ft., use: 18 gage minimum, four conductor cable.
For cable runs of 500 - 1000 ft., use: 16 gage minimum, four conductor cable.
4. Cell to analyzer cables are considered low level. Run seperate from high level wiring.
5. If 2 Cells are to be appplied, the same wiring guidelines are applied to Cell 2 as are followed for Cell 1.
Figure 5-2 Installation Diagram-Cat. 4909 Cells with Junction Box Head
Connected to 9782 Conductivity/Resistivity Analyzer
7/99
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
21
4909 CPVC Conductivity Cell Insertion/Removal Assembly Operations Manual
20 ft. max.
Five Point Terminal Board.
Each Terminal Will Accept
#16 Gage Max. Wire
RED
Temp.
Comp.
Red
Green
GREEN
Black
White
WHITE
BLACK
Cell
W
K
SH
G
R
Cell cable is approx. .250"
(6.4mm) O.D. max. with 4
conductors of #18 AWG
wire, 7 or 20 foot length.
Note 1
Cell Assembly Connections
Conductivity / Resistivity Analyzer
Analyzer Input Connections
GND
I
II
III
IV
V
VI
Direct Cell to Analyzer Installation
4905
-
-
333
-
X1
IV
V
I
II
III
4973
4974
-
333 - X1
-
I
II
III
IV
V
VI VII
4908
4909
-
-
333
-
X1
20 ft. max.
1000 ft. max.
Note 3
R
G
K
Red
Green
Coax Cable Shield
Black
White
W
Conductivity/Resistivity
Analyzer
Junction Box
Cell Assembly Connections
Note 2
SH
G
R
Analyzer Input
Connections
W
K
I
II
III
IV
V
VI
4905
-
-
333
-
X1
Cell to Analyzer Through Junction Box
Note 1
I
II
III
IV
V
4973
4974
-
333 - X1
-
GND
I
II
III
333
IV
X1
V
VI VII
4908
4909
-
-
-
NOTES:
1. For pure water samples in non-conductive (plastic, glass, etc.) piping, ground the black cell electrode lead near the cell.
Alternatively, connect to the 7082 ground screw as shown dotted. Do not ground 10, 25, or 50 constant cells.
2. 7082-16, 17, 18, 19 (only)
Use 22 gage minimum coaxial cable type RG59/U connecting shield to terminal "SH" only.
3. 7082-16, 17, 18, 19
For cable runs of up to 500 ft., use: 18 gage minimum, three conductor cable.
For cbale runs of 500 - 1000 ft., use: 16 gage minimum, three conductor cable.
7082-13, 14, 15 [coax and shield (SH) not used]
For cable runs of up to 500 ft., use: 18 gage minimum, four conductor cable.
For cable runs of 500 - 1000 ft., use: 16 gage minimum, four conductor cable.
4. Cell to analyzer cables are considered low level. Run seperate from high level wiring.
a/n 23346
Figure 5-3 Installation Diagram-Cat. 4909 Cells with 7 or 20 Foot Leads
Connected to 7082 Conductivity/Resistivity Analyzer
22
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
7/99
Platinization and Platinum Black
Five Point Terminal Board.
Each Terminal Will Accept
#16 Gage Max. Wire
SH
(Note 5)
G
R
G
#2 Temp
20 ft. max.
Compensator
#1 Temp
RED
Compensator
R
Temp.
Comp.
Red
W
(Note 5)
Cell 2
Green
Black
White
GREEN
Electrodes
K
W
K
WHITE
BLACK
Cell 1
Electrodes
Cell
Cell cable is approx. 0.250"
(6.4mm) O.D. max. with 4
conductors of #18 AWG
wire, 7 or 20 foot length.
Note 1
Cell Assembly Connections
Conductivity/Resistivity
Analyzer
Analyzer Input Connections
I
II
-
III
333
IV
X1
V
VI
Direct Cell to Analyzer Installation
4905
GND
-
-
-
I
II
III
IV
V
4973
4974
333 - X1
-
VII
VI
I
II
III
333
IV
X1
V
4908
4909
-
-
-
SH
G
20 ft. max.
1000 ft. max.
Note 3
(Note 5)
#2 Temp
Compensator
R
R
G
Red
G
Green
#1 Temp
Compensator
R
K
W
Black
White
(Note 5)
Cell 2
Electrodes
W
Note 2
Coax Cable
Shield
K
W
K
Junction Box
Cell Assembly Connections
Cell 1
I
II
III
333
IV
X1
V
VI
Electrodes
4905
-
-
-
-
Cell to Analyzer Through Junction Box
Note 3
I
II
III
IV
V
Note 1
4973
4974
333 - X1
-
Conductivity/Resistivity
Analyzer
I
II
III
333
IV
X1
V
VI VII
4908
4909
GND
-
-
-
Analyzer Input Connections
NOTES:
1. For pure water samples in non-conductive (plastic, glass, etc.) piping, ground the black cell electrode lead near the cell.
Alternatively, connect to the 9782 ground screw as shown dotted. Do not ground 10, 25, or 50 constant cells.
2. 9782C-S0 (only)
Use 22 gage minimum coaxial cable type RG59/U connecting shield to terminal "SH" only.
3. 9782C-S0
For cable runs of up to 500 ft., use: 18 gage minimum, three conductor cable.
For cbale runs of 500 - 1000 ft., use: 16 gage minimum, three conductor cable.
9782C-W0 [coax and shield (SH) not used]
For cable runs of up to 500 ft., use: 18 gage minimum, four conductor cable.
For cable runs of 500 - 1000 ft., use: 16 gage minimum, four conductor cable.
4. Cell to analyzer cables are considered low level. Run seperate from high level wiring.
5. If 2 Cells are to be applied, the same guidelines are applied to Cell 2 as wereused for Cell 1.
a/n 23346
Figure 5-4 Installation Diagram-Cat. 4909 Cells with 7 or 20 Foot Leads
Connected to 9782 Conductivity/Resistivity Analyzer
7/99
4909 CPVC Conductivity Cell Insertion/Removal Assembly– Operations Manual
23
Industrial Automation and Control
Honeywell, Inc.
1100 Virginia Drive
Fort Washington, Pennsylvania 19034
|