Honeywell Cell Phone 70 82 25 18 User Manual

4905 Style Conductivity Cells  
Installation and Maintenance Manual  
70-82-25-18  
Revision 6  
Honeywell Process Solutions  
 
About This Document  
Abstract  
This document is intended to support the installation, operation and maintenance of the 4905 Series of  
Conductivity Cells.  
Revision Notes  
The following list provides notes concerning all revisions of this document.  
Rev. ID  
Date  
Notes  
0
12/96  
This document is the initial Honeywell release of the L&N manual p/n 177667  
Rev. M2. There has been no significant changes made to this manual. The  
format has been changed to reflect the Honeywell layout.  
1
6/99  
Edits done to add new Model Selection Guide information and to correct  
some errors in the text.  
2
4
5
6
6/03  
9/05  
Removed obsolete info, added DL4000 details.  
Edit text and add electrical connection drawings for UDA2182 analyzer  
Added Platinizing information to Maintenance/ revised Parts List  
Added CRN approval and quick disconnect option  
7/06  
12/07  
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 #  
APT2000CC Transmitter User Manual  
70-82-25-95  
70-82-25-104  
70-82-25-119  
APT4000CC Analyzer User Manual  
UDA2182 Analyzer User Manual  
World Wide Web  
The following lists Honeywell’s World Wide Web sites that will be of interest to our customers.  
Honeywell Organization  
WWW Address (URL)  
Corporate  
Honeywell Process Solutions  
Telephone  
Contact us by telephone at the numbers listed below.  
Organization  
Phone Number  
United States and Canada  
Honeywell  
1-800-423-9883 Tech. Support  
1-800-525-7439 Service  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Contents  
iv  
4905 Series Conductivity Cells – Installation and Maintenance  
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Figures  
Figure 4-1 Installation Diagram, 4905 Cells, with Junction Box head connected to UDA2182 Analyzer 10  
Figure 4-2 Installation Diagram, 4905 Cells, with 20leads directly connected to UDA2182 Analyzer or  
connected to Junction Box_________________________________________________________ 11  
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4905 Series Conductivity Cells – Installation and Maintenance  
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vi  
4905 Series Conductivity Cells – Installation and Maintenance  
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Introduction  
1. Introduction  
1.1 Overview  
These cells form the sensing network for industrial analyzers and transmitters designed to make continuous  
measurements of electrolytic conductivity. The cells are primarily suited to measurements in effluents of  
ion-exchangers and distillation columns; but appropriate constants are provided for many other  
applications, including measurements in micro-electronic component washing and plating-rinse effluents.  
Universal in mounting, any of the cells can be arranged for immersion (for applications where the  
temperature does not exceed 85°C), insertion (1” NPT) or flow type sampling. The latter can be achieved  
by use of a CPVC flow housing, a 1” pipe tee (schedule 40), or 1-1/4” plastic tee (schedule 80) installed in  
a process line or bypass line as pictured in Figure 1-1.  
Cell Assembly  
Adapter Bushing  
Schedule 80  
1-1/4" Pipe Tee  
Guard Tube  
on Cell  
a/n 23381  
Figure 1-1 4905 Type Conductivity Cell Mounted in a 1-1/4”  
Schedule 80 Tee Using an Adapter Bushing  
ATTENTION  
Please note that specific parameters of your process may prohibit the use of nickel elements. For example,  
use a platinum-element cell if the cell will measure or be exposed to regeneration acids or bases.  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Introduction  
The cell constant is selected according to the range of the measuring instrument used and the solution  
measured. In general, a high-constant cell is used for solutions having low electrical resistance (high  
conductivity) and a low-constant cell is used for solutions having high electrical resistance (low  
conductivity). Automatic Temperature Compensation (ATC) during the measurement is provided by a  
built-in temperature sensing network located near the cross-channel or guard-tube holes.  
The cells are molded from Polyethersulfone (PES) which is resistant to most corrosive chemicals over a  
wide range of temperatures. (A common exception is chlorinated hydrocarbons.) Sample solutions come  
into contact only with the above plastic and the platinum or nickel electrode surface. Any cell can be  
supplied with either electrode material.  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Specifications  
2. Specifications  
2.1 Specifications for 04905 Series  
Parameter  
Description  
Cell Constant  
04905 Series: 0.01, 0.1, 1.0, 10 and 50 as  
specified  
Nickel, Platinum or Monel as specified  
1724 kPa @ 140°C (250 psig @ 284°F)  
140°C (284°F)  
Electrode Material  
Maximum Pressure Limit  
Maximum Continuous Temperature Limit  
For immersion applications:  
80°C (176°F)  
Materials of Construction  
Cable Options  
Cell Body: PES (polyethersulfone)  
Support Fittings: Ryton  
Electrodes: Nickel, Platinum or Monel as specified  
Quick Disconnect Receptacle: Stainless Steel  
Leadwire: PVC insulated 22 gage cable, 0.245”  
OD, 20 and 50 feet lengths available.  
Quick Disconnect Option  
Mating cables must be purchased from Honeywell  
Universal Head (Aluminum)  
Approximately 1 lb (0.45 kg)  
Weight  
If using universal head:  
3 lb (1.35 kg)  
Manufactured to comply with ASME boiler and  
pressure vessel code Section III, Div.1, UG-101  
Approvals  
CRN #0F11607.5C  
1” NPT male, Schedule 40  
Inlet: 3/4" MNPT  
Insertion  
Flow Chamber  
Outlet: 3/4" FNPT  
5” to 7” (127 to 178 mm) depending on cell  
constant  
Insertion Depth  
Overall Length  
Approximately 6 to 8” (152 to 203 mm)  
If using universal head:  
10 to 12-1/4” (254 to 311 mm)  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Specifications  
2.2 Specifications for 276127 Flow Chamber  
Parameter  
Description  
2 gpm @ 40psig and atmospheric discharge  
200 psig @ 25°C  
Maximum Flow  
Maximum Pressure  
Maximum Temperature  
Dimensions  
140°C (284°F) at atmospheric pressure  
1-1/2” (3.8 cm) octagon x 8-3/4” (22.2 cm) long.  
Sample Inlet: 3/4" MNPT  
Sample Outlet: 3/4" FNPT  
Cell Inlet: 1” MNPT  
Polyethersulfone (PES)  
Materials of Construction  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Installation  
3. Installation  
3.1 Overview  
The conductivity cell is secured permanently to the 1” N.P.T. bushing which is used for all types of  
mountings. Although the physical appearance of the various cells is the same (except for length), the cell  
construction differs according to the constant. On the 10 and 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 elliptical on the 10 constant cell. The 1, 0.1,  
and 0.01 constant cells have a removable cell guard which is screwed onto the cell body to protect the  
electrode surfaces. Electrodes are three disks on the 1 constant cell, parallel plates on the 0.1 constant cell,  
and wire wound on the cell body on the 0.01 constant cell. Cells must be used with the guard in place or  
the cell constant may differ from that specified.  
Most of the auxiliary parts which enable the user to achieve the various types of mounting are readily  
obtained from local suppliers. For an immersion mounting (only applicable in applications where the  
temperature does not exceed 85°C)with 04905 Series cells, only the appropriate length of 1/2 inch pipe  
(e.g., CPVC) and if desired, a 1/2 inch end coupling is needed. For an in-line flow mounting, only a 1”  
schedule 40 tee is required. The basic cell can be converted to a flow cell for either bypass or in-line  
arrangements by use of the PES flow-cell housing (Honeywell Part 276127) shown in Figure 3-2.  
However, the temperature and pressure specifications listed for this flow chamber under Specifications  
apply.  
3.2 Types of Mounting  
There are three types of mounting: Flow, Immersion (for use in applications where temperatures do not  
exceed 85°C) and Insertion. Mounting dimensions for each type of cell assembly are given in Figure 3-2,  
3.3 The Differences between the Quick Disconnect and Integral  
Cable Option  
The cable options of quick disconnect and integral cable do not affect the performance of the cell. These  
options only relate to how the cell is connected to the instrument.  
ATTENTION  
•There are different electrical connections for these options. Please refer to Section 4 for instructions.  
NOTE: The wire colors for the integral cable and quick disconnect option are not the same. Do not use shielded  
cable except where shown in the following figures.  
Integral cable means the cable is potted into the cell. The cable and cell are one entity and cannot be  
separated.  
The quick disconnect option means the cell is connected to the cell by a receptacle on the top of the  
cell. The cell and the cable are separate entities. When the time comes to replace the cell, the cable  
does not have to be replaced. The cable can simply be mated with another cell that has the quick  
disconnect option. This option cannot be used in immersion applications. The cable must be  
purchased from Honeywell.  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Installation  
3.4 Flow-Type Mounting  
The cross-channel or guard-tube hole in the cell must always be covered by the solution and the solution  
level must be 1-1/2 inches above these holes. When mounting the cell in a pipe tee such as shown in  
Figure 3-1, have the solution enter the tee from below and exit to the side. As shown, the guard-tube hole  
is in line with the horizontal pipe run. However, if it is possible that the pipe line will not be full at all  
times, locate the hole just below the exit pipe to insure flooding of the cell under all conditions. As shown  
in Figure 3-1, always locate the cell on the pressure side, not the vacuum side of the pump. The flow-cell-  
housing, an accessory part having 3/4” male inlet and female outlet threads, can be used for an in-line  
measurement or in a bypass line as shown in Figure 3-1, depending upon the flow volume or pipe size.  
Adapter bushings are available to convert inlet and outlet fittings to 1/4” female threads. See Section 0 .  
The cell must be covered by the solution at all times. Therefore, make certain the lowest solution head is  
higher than the cell location. See that an air bubble does not prevent the cell from filling properly.  
Flow-cell housing can be used “in-line” only if a maximum flow of 2 gallons per minute can be tolerated.  
To avoid cracking the 276127 flow-cell housing, use Teflon tape on cell threads and tighten cell only  
enough to prevent leakage.  
To install, tighten the cell into a 1” schedule 40 pipe tee. If the flow-cell housing is used, assemble the cell  
and housing and install it in the process flow line or in a bypass line.  
Preferred  
Cell Locations  
Process  
Cooler  
15"  
(381mm)  
Pump  
a/n 23383  
Figure 3-1 Typical Conductivity Measuring Installation  
3.5 Immersion-Type Mounting for 04905 Series Cells  
For use in applications where temperature does not exceed 85°C. The cell must be immersed to a level  
above the cross-channel or guard tube hole and must be immersed to 1-1/2 inches above this hole if an  
integral compensator is used. For most immersion applications, a 1/2” support pipe, preferably CPCV  
must be threaded into the cell bushing, using Teflon tape to seal the threads, thus permitting adequate  
immersion. Unless this pipe extension is used, do not immerse the top of the bushing. To insured that a  
representative sample is measured at all times, the solution must circulate through the channels. In  
quiescent solutions, provide sufficient agitation.  
To install the cell, determine the length of 1/2” pipe required to give the immersion needed to keep the cell  
completely immersed at all times. Up to six feet of pipe can be used for the standard cell having seven feet  
of cable. Remove the small bushing at the top of the cell, slide it off the cable, and replace it with the 1/2-  
inch pipe. At the top of the pipe slide a pipe coupling and the small bushing back over the leadwire as  
shown in Fig. 3-1, or install a junction box to terminate the pipe.  
6
4905 Series Conductivity Cells – Installation and Maintenance  
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Installation  
3.6 Insertion-Type Mounting  
The cell can be inserted into a 1” N.P.T. threaded opening, but it is imperative that the tank or chamber be  
full under all process conditions. Make certain the liquid head is above the cell location. A vertical  
insertion (from above) or a horizontal insertion can be used. To install, simply tighten the cell into a 1”  
N.P.T. threaded opening (using a Teflon thread compound such as Teflon tape) so that the entire electrode  
is immersed in the measured solution. Allow at least 1/2-inch clearance beyond the end of the cell. 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. See Figure 3-1.  
Flow Out  
11/2"  
1 1/2"  
3/4" NPT  
(38mm)  
Octagon  
(38mm)  
Flow Chamber  
3/4" NPT  
11/2"  
(38mm)  
Octagon  
11/2"  
(38mm)  
Flow In  
83/4"  
(222mm)  
13 1/4"  
(337mm)  
1" Fitting  
Allow 7 3/4" (197mm) for removal o  
fcell  
Notes  
1.  
2.  
Mount cell and flow chamber horizontally as shown above with flow exit “up to eliminate possible air gap around cell body.  
If cell and flow chamber must be mounted vertically, attach a short length of tubing to flow exit as shown below and form  
a trap to ensure filing of flow chamber, especially at low flow.  
2" min.  
(51mm)  
Figure 3-2 Dimension Drawing for 276127 Flow Housing  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Installation  
1.687"  
(42.8mm)  
“X”  
See Table  
Celll  
Constant  
mm  
138  
X" Approx.  
5.4"  
001  
0.1  
5.4"  
5.4"  
138  
138  
146  
1
10  
50  
5.8"  
6.9  
175  
1" NPT  
1.5"  
Cell cable is approx. 0.250”  
(6.4 mm) O.D. max with 4  
conductors of #18 AWG wire.  
0.940"  
(24mm)  
Dia  
Octagon  
(38mm)  
Figure 3-3 Mounting Dimensions for 04905 Series  
"X"  
See Table  
5.5"  
(140mm)  
Cell  
constant  
X" Approx.  
5.4"  
5.4"  
mm  
138  
138  
138  
001  
0.1  
1
Four Point Terminal  
Board for lead wire  
connections. Each #6-32  
screw terminal will  
5.4"  
50  
146  
5.8”  
6.9”  
accomodate one  
10  
#12 or smaller AWG wire  
1
75  
3"  
(76mm)  
1" NPT  
0.940"  
(24mm)  
Dia  
1.5"  
(38mm)  
Octagon  
female NPT for user's  
¾”  
flexible electrical conduit  
connection. For insertion or  
removal of cell, disconnect  
conduit connections.  
NOTE: For existing users with conduit, a ¾” x ½” adapter bushing will be required to use existing conduit.  
Figure 3-4 Mounting Dimensions for 04905 Series with Junction Box Head  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Installation  
CABLE  
CONNECTOR WILL  
PASS THRU A  
0.625(15,9) MIN. DIA  
PIPE OR CONDUIT  
OPENING  
26AWG  
CONDUCTORS  
WITH .02 (0,6) DIA.  
FERRULES  
QUICK DISCONNECT COAX  
ELECTRODE CABLE APPROX.  
0.270(6,8) DIA.  
CABLE LENGTHS AVAILABLE: 2, 3, 6,  
15 METERS  
MAX. TEMP. = 70 DEG. C (158 DEG. F)  
Figure 3-5 Mounting Dimensions for 04905 Series with Quick Disconnect Option  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Electrical Connections  
4. Electrical Connections  
4.1 Overview  
The terminal board connections for the various Honeywell measuring instruments are given in the  
appropriate Figures in this section.  
To avoid the possibility of AC pickup in the cell leads, separate them from all AC line-voltage wiring or  
run them in a separate grounded conduit.  
ATTENTION  
Do not use shielded cable except where shown in the following figures.  
4.2 Instrument Wiring for 4905 Cells with Integral Cable  
4.2.1 Model 4905 Series with Integral Cable to UDA2182 Analyzer  
NOTES:  
1. FOR PURE WATER SAMPLES IN NON -CONDUCTIVE (PLASTIC, GLASS, ETC)  
PIPING, GROUND THE BLACK CELL ELECTRODE LEAD NEAR THE CELL.  
ALTERNATELY, CONNECT TO THE UDA GROUND SCREW AS SHOWN DOTTED.  
DO NOT GROUND 10, 25, OR 50 CONSTANT CELLS  
2. FOR CELL LEADS A AND C, USE 16 TO 22 AWG CABLE SHIELDED TWISTED PAIR,  
WITH 30pF MAX. CAPACITANCE BETWEEN CONDUCTORS, CONNECT SHIELD TO TERMINAL “10”  
3. FOR COMPENSATOR LEADS B AND D, USE 16 TO 22 AWG, TWO CONDUCTOR C ABLE  
4. CELL TO ANALYZER CABLES ARE CONSIDERED LOW LEVEL. RUN SEPARATE FROM HIGH LEVEL WIRING.  
Figure 4-1 Installation Diagram, 4905 Cells, with Junction Box head connected to UDA2182  
Analyzer  
10  
4905 Series Conductivity Cells – Installation and Maintenance  
12/07  
 
 
Electrical Connections  
50 FT. MAX.  
WIRE. 20 FT. OR 50 FT. CABLE LENGTH.  
Direct Cell to Analyzer Installation  
50 FT. MAXIMUM  
4905SERIESCONDUCTIVITYCELL
Cell to Analyzer through Junction Box  
NOTES:  
1. FOR PURE WATER SAMPLES IN NON-CONDUCTIVE (PLASTIC, GLASS, ETC)  
PIPING, GROUND THE BLACK CELL ELECTRODE LEAD NEAR THE CELL.  
ALTERNATELY, CONNECT TO THE UDA GROUND SCREW AS SHOWN DOTTED.  
DO NOT GROUND 10, 25, OR 50 CONSTANT CELLS  
2. FOR CELL LEADS BLACK AND WHITE, USE 16 TO 22 AWG CABLE SHIELDED TWISTED PAIR,  
WITH 30pF MAX. CAPACITANCE BETWEEN CONDUCTORS, CONNECT SHIELD TO TERMINAL “10”  
3. FOR COMPENSATOR LEADS RED AND GREEN, USE 16 TO 22 AWG, TWO CONDUCTOR CABLE  
4. CELL TO ANALYZER CABLES ARE CONSIDERED LOW LEVEL. RUN SEPARATE FROM HIGH LEVEL WIRING.  
Figure 4-2 Installation Diagram, 4905 Cells, with 20leads directly connected to  
UDA2182 Analyzer or connected to Junction Box  
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4905 Series Conductivity Cells – Installation and Maintenance  
11  
 
 
Electrical Connections  
4.2.2 Model 4905 Series with Integral Cable to APT Series Analyzer/Transmitter  
04905 series cells with leads connected to an APT4000  
04905 series cells with leads connected to an APT2000  
Figure 4-3 Model 4905 Series to APT Series Analyzer/Transmitter  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Electrical Connections  
4.3 Instrument Wiring for 4905 Cells with Quick Disconnect Cable  
4.3.1 Wiring Model 4905 with Quick Disconnect Cable to UDA2182  
Wire  
Color  
Signal  
name  
10  
9
Yellow  
Coax  
Cell Low  
8
7
6
Cell High  
RTH 3rd Wire  
RTH Low  
5
4
3
2
1
Green  
Red  
RTH High  
Brown  
Blue  
Wire to chassis  
ground screw  
Earth Ground  
Figure 4-4 Wiring Diagram for 4905 Cells with Quick Disconnect Cable Connected to  
UDA2182 Analyzer  
4.3.2 Wiring Model 4905 with Quick Disconnect Cable to APT  
NOTE: Ignore  
blue and brown  
wires.  
Figure 4-5 Wiring Diagram for 4905 Cells with Quick Disconnect Cable Connected to  
APT4000  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Electrical Connections  
Note: Ignore  
black and  
blue wires.  
Figure 4-6 Wiring Diagram for 4905 Cells with Quick Disconnect Cable Connected to  
APT2000  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Maintenance  
5. Maintenance  
5.1 Introduction  
If abnormal readings occur, this may indicate poor response because the cell is not filled with process  
solution. Check the cell installation. Note that a grayish dull surface on the cell plastic (normally glassy)  
can result from exposure to temperatures above 140°C.  
The only maintenance which may be required is occasional cleaning in certain applications.  
Cell constants 0.01, 0.1, and 1 cannot be used if solution resistance measures less than 1000 ohms unless  
the cell is platinized in accordance with Section 5.  
5.2 To Clean the Cell  
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.  
CAUTION  
The cell housing is PES (Polyethersulfone). DO NOT clean with acetone, chloroform, toluene, benzene, or any  
other chlorinated hydrocarbon.  
In general, soap and hot water are effective and adequate. If necessary, a soft bristle brush of about 1/4”  
diameter may be used to clean out the tubular channels of the 10 and 50 constant cells. Do not scratch the  
electrode surfaces. 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.  
5.3 To Check Conductivity System  
To check the conductivity system comprising conductivity cell, leadwire, and measuring instrument, the  
user may desire to make a measurement in a reference solution of known conductivity. Control the  
temperature only within limits consistent with the desired accuracy. The 25°C temperature value is  
suggested. The solutions may be prepared in the presence of air. The solution must fill the cell during  
measurement.  
For optimum accuracy in acid measurements above 5% concentration, use the “Calibration Trim” function  
available in the conductivity instrument. See the appropriate Analyzer/Transmitter manuals for details on  
the trim function.  
To check the constant of a cell, use a second cell having the same constant and compare the reading of one  
against the other.  
If the 04905 Series conductivity cell model number contains ‘333’, the normal resistance of the  
temperature sensor as measured across the red (B) and green (D) leads is 8550 ohms at 25°C.  
To check the electrode insulation, connect an ohmmeter across the black (A) and white (C) leads. With a  
dry and clean cell, the resistance should be greater than 50 megohms.  
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4905 Series Conductivity Cells – Installation and Maintenance  
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Maintenance  
5.4 Platinizing the Cell Electrodes  
Only the electrodes having constants 10 and 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 new 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 loss in sensitivity  
(slow response of measuring instrument), erratic behavior of measuring instrument, or difficulty in  
balancing. 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 high purity water measurements.  
Before platinizing, clean the cell with detergent and brush as described in Section 5.2.  
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 a platinizing solution to a level above the cross-channel.  
To platinize the 10 or 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. (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.) Both electrodes of the cell are platinized  
simultaneously by connecting the negative terminal of the battery (see Table 5-1) to both leadwires of the  
cell. Connect the positive terminal of the battery to the auxiliary platinum electrode. Note the time lapse  
and continue the platinizing operation for the time in seconds listed in Table 5-1. Then disconnect the  
battery and remove the cell. Rinse the cell thoroughly in tap water and then rinse in distilled water.  
During the platinizing operation, move the cell up and down gently to keep the solution stirred.  
CAUTION  
The preceding procedure produces a barely visible coating of platinum black on the electrode surfaces. Do not  
attempt to darken electrodes by additional platinization since this will affect the cell performance adversely.  
Pour the platinizing solution back into its container as it may be used a number of times.  
If the cell is not to be installed immediately after platinizing, it should be kept submerged in distilled water  
until put into use, as platinum black is not stable when dry.  
Table 5-1 Voltage and Time Limits for Platinizing Cells  
DC  
10  
50  
Volts  
6.0  
100 sec. 300 sec.  
---- 240 sec.  
12.0  
16  
4905 Series Conductivity Cells – Installation and Maintenance  
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Replacement Parts and Accessories  
6. Replacement Parts and Accessories  
Description  
Part Number  
276127  
Flow Cell Housing, PES  
Junction Box  
31316260  
Legacy updates cap  
50028816-001  
Extension Cables for Sensors with Quick Disconnect Option  
50024092-001  
50024092-002  
50024092-003  
50024092-004  
2m (6.56 ft)  
3m (9.84 ft)  
6m (19.69 ft)  
15m (49.21 ft)  
EXTENSION CABLE MUST BE PURCHASED FROM HONEYWELL  
Cell Extension Leadwire  
For ATC value of 333:  
Standard Range of 9782 or 7082, also APT 2000  
To 1000 ft:  
834059  
835024  
3-conductor, 18 gage cable (Belden 9493) and  
Coax cable (Belden 9259)  
Wide Range 9782 and 7082:  
To 1000 ft:  
31834052  
834059  
4-conductor, 18 gage cable only  
For all instruments with an ATC other than 333:  
3 conductor, 18 gage, cable (Belden 9493) only  
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4905 Series Conductivity Cells – Installation and Maintenance  
17  
 
 
 
 
Honeywell Process Solutions  
Honeywell, Inc.  
512 Virginia Drive  
Fort Washington, Pennsylvania 19034  
70-82-25-18 1207 Printed in USA  
 

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