Evoqua Wallace & Tiernan Depolox 3 plus User manual
Depolox® 3 plus RESIDUAL ANALYZER
FOR MEASURING CHLORINE, CHLORINE DIOXIDE,
OZONE, AND/OR pH OR FLUORIDE
BOOK NO. WT.050.560.001.UA.IM.0714
W3T140188 - U.S.
W3T172611/Issue 06 - Germany
Depolox® 3 plus
RESIDUAL ANALYZER
FOR MEASURING CHLORINE,
CHLORINE DIOXIDE, OZONE,
AND/OR pH OR FLUORIDE
BOOK NO. WT.050.560.001.UA.IM.0714
W3T140188 - U.S. W3T172611/Issue 06 - Germany
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
EQUIPMENT SERIAL NO. _____________________________
DATE OF START-UP ________________________________
START-UP BY ____________________________________
Prompt service available from nationwide authorized service contractors.
ORDERING INFORMATION
In order for us to ll your order immediately and correctly, please order material by description and part number, as shown
in this book. Also, please specify the serial number of the equipment on which the parts will be installed.
WARRANTY
Seller warrants for a period of one year after shipment that the equipment or material of its manufacture is free from defects
in workmanship and materials. Corrosion or other decomposition by chemical action is specically excluded as a defect
covered hereunder, except this exclusion shall not apply to chlorination equipment. Seller does not warrant (a) damage
caused by use of the items for purposes other than those for which they were designed, (b) damage caused by unauthorized
attachments or modications, (c) products subject to any abuse, misuse, negligence or accident, (d) products where parts
not made, supplied, or approved by Seller are used and in the sole judgment of the Seller such use affects the products’
performance, stability or reliability, and (e) products that have been altered or repaired in a manner in which, in the sole
judgment of Seller, affects the products’ performance, stability or reliability. SELLER MAKES NO OTHER WARRANTY OF
ANY KIND, AND THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING ANY WARRANTY OF MERCHANTABILITY OR OF FITNESS OF THE MATERIAL OR EQUIPMENT FOR
ANY PARTICULAR PURPOSE EVEN IF THAT PURPOSE IS KNOWN TO SELLER. If Buyer discovers a defect in mate-
rial or workmanship, it must promptly notify Seller in writing; Seller reserves the right to require the return of such defective
parts to Seller, transportation charges prepaid, to verify such defect before this warranty is applicable. In no event shall
such notication be received by Seller later than 13 months after the date of shipment. No action for breach of warranty
shall be brought more than 15 months after the date of shipment of the equipment or material.
LIMITATION OF BUYER’S REMEDIES. The EXCLUSIVE REMEDY for any breach of warranty is the replacement f.o.b.
shipping point of the defective part or parts of the material or equipment. Any equipment or material repaired or replaced
under warranty shall carry the balance of the original warranty period, or a minimum of three months. Seller shall not be
liable for any liquidated, special, incidental or consequential damages, including without limitation, loss of prots, loss of
savings or revenue, loss of use of the material or equipment or any associated material or equipment, the cost of substitute
material or equipment, claims of third parties, damage to property, or goodwill, whether based upon breach of warranty,
breach of contract, negligence, strict tort, or any other legal theory; provided, however, that such limitation shall not apply
to claims for personal injury.
Statements and instructions set forth herein are based upon the best information and practices known to Evoqua Water
Technologies, but it should not be assumed that every acceptable safety procedure is contained herein. Of necessity this
company cannot guarantee that actions in accordance with such statements and instructions will result in the complete
elimination of hazards and it assumes no liability for accidents that may occur.
1.010-42
725 Wooten Road
Colorado Springs, Co 80915
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
INTRODUCTION
The Depolox® 3 plus Residual Analyzer is a low cost economical analyzer for
potable water that connuously measures either free or total chlorine, chlorine
dioxide or ozone residuals using proven amperometric measurement technol-
ogy. There is also an arrangement available for measuring pH or ouride. All
arrangements include a temperature measuring and monitoring device.
The Depolox® 3 plus analyzer consists of two separate components: a “wet
side” package containing the sensor/cell and an electronic control package.
The electronic package is available for either 115 or 230 volt operaon. A single
input arrangement is used when only a disinfectant measurement (free or
total chlorine, chlorine dioxide, ozone) is required. A dual input arrangement
is available when either pH or uoride measurement is required in addion to
a disinfectant measurement. Note that for pH- or uoride-only measurement,
the dual input electronic package is required and the dual input cannot be
used for two disinfectant measurements. All arrangements have temperature
measurement. The electronic package provides for operator input via plain-text-
assisted, self-explanatory menus and a sealed keypad. The large, two-line (16
characters each) display of disinfectant residual alternates every ve seconds
with the disinfectant value, temperature, and either pH or uoride values when
the analyzer is set up for these measurements.
There are two wetside conguraons available: Membrane and Bare Electrode.
Both consist of a ow-through cell with a transparent plexiglass body that houses
one or two measuring sensors. The cell’s transparency permits visual checks on
the ow of sample water and measuring condions. The Membrane wetside
can be ed with any one of four membrane-type sensors (free chlorine, total
chlorine, chlorine dioxide or ozone) for disinfectant measurement. A second
sensor can be added for pH or uoride measurement. The bare electrode
wetside is available for free chlorine measurement only. This arrangement can
be used where a quick response me is required or if there is a high hardness
in the sample water that could foul a membrane sensor. A second sensor can
be added for pH or uoride measurement. Note that free chlorine measure-
ment by this wetside is aected by changes in pH. It is possible to compensate
for pH changes by using a dual input arrangement with the pH sensor opon
for automacally calculang the residual value in response to changes in pH
between 6.00 to 8.75.
Refer to Table A for part numbers for the various analyzer combinaons.
Introd.
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
Introd. (Cont’d)
Table A - Analyzer Type Selecon Sheet Using Package Numbers
ELECTRONIC PACKAGE (Select one) PART #
Chlorine ONLY (SINGLE SENSOR)
115V W2T365288
230V W2T365292
Chlorine AND/OR pH OR Fluoride (DUAL SENSOR)
115V W2T365290
230V W2T365293
SENSOR 1 - DISINFECTANT (SINGLE OR DUAL) (Select one unless using pH or Fluoride alone)
Depolox® 3 plus Bare Electrode (With PT100 Temperature Sensor)
Free Chlorine Measurement Package W2T9694
(For Fluctuating pH, Dual Electronics with
pH Recommended)
OR
Depolox® 5 Bare Electrode (With PT1000 Temperature Sensor)
Free Chlorine Measurement Package W2T7957
(For Fluctuating pH, Dual Electronics with
pH Recommended)
OR
Depolox® 3 plus Membrane Sensor
Membrane Flow Block Assembly W2T9681
OR
VariaSens™
Membrane Flow Block Assembly W2T7958
CO2 Buffer Package (For Free Chlorine) W3T138155
AND (SELECT 1)
Free Cl2 Probe FC1 W2T8665
Total Cl2 ProbeTC1 W2T9687
ClO2 Probe CD7 W2T8664
Ozone Probe OZ7 W2T8666
AND (SELECT 1)
2m Cable W2T416786
5m Cable W2T420222
10m Cable W3T149888
15m Cable W2T416799
25m Cable W3T149743
50m Cable W3T149744
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
Introd. (Cont’d)
Table A - Analyzer Type Selecon Sheet Using Package Numbers (Cont’d)
AND/OR (Options for Bare and Membrane)
(For use with Depolox® 3 plus wetsides only)
Flow Switch Alarm W2T9690
Stop Valve W2T9689
Note: Flow Switch and Stop Valve are integral to Depolox® 5
Bare Electrode and VariaSens™ Wet Side.
SENSOR 2 (FOR DUAL INPUT ONLY)
pH Sensor W2T12126
OR
Fluoride Kit - Rellable W2T417005
OR
Fluoride Kit - Gel Type W3T124078
OR
Impedence Converter W2T9651
OR (If Fluoride or pH ONLY)
Fluoride/pH Standalone Wetside W2T12125
Note: The standard 1 meter cable for the pH and uoride probes
is provided pre-attached to the dual electronics. No additional
cable is required.
Opons:
• Flow switch (to provide alarm for loss of sample water)
(Integral to Depolox® 5 bare electrode and VariaSens™ wetside)
• Stop valve (to shut o sample ow)
(Integral to Depolox® 5 bare electrode and VariaSens™ wetside)
• Impedance transformer (for pH or Fluoride probe)
NOTE: When ordering material, always specify model and serial number of
apparatus.
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
Electromagnec Compability and Other Requirements
Depolox® 3 plus devices conform with the following requirements:
• EN 61326-1: 2006 (EMC)
• EN 61010-1: 2006 (LVD)
Depolox® 3 plus devices are designed for use in industry, domesc, business,
and trade sectors.
Declaraon of Conformity
Depolox® 3 plus devices comply with the requirements of the EU direcves
2006/95/EC “Low Voltage Direcve” and 2004/108/EC “Electromagnec Com-
pability” and the harmonized European Standards listed therein.
Intended Use
The Depolox® 3 plus consists of one or two combined measuring and reference
sensors for chlorine, chlorine dioxide, ozone, temperature, pH, and uoride;
a measuring water monitoring device; and an electronics module. The system
is for measuring the concentraon of chlorine, chlorine dioxide, ozone and
temperature as well as pH or uoride, and to display and transmit measure-
ments, in potable water.
WARNING: TO AVOID INJURY TO PERSONS CAUSED BY ELECTRICITY ONLY
AUTHORIZED AND QUALIFIED ELECTRICIANS MAY INSTALL THE DEVICE
AND OPEN THE HOUSING. THE DEVICE MAY ONLY BE OPERATED WHEN
THE HOUSING IS CLOSED AND MUST BE CONNECTED TO THE PROTECTIVE
CONDUCTOR. MODIFICATIONS TO THE DEVICE WHICH EXCEED THOSE
DESCRIBED IN THIS MANUAL ARE NOT PERMISSIBLE.
Introd. (Cont’d)
!
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
Table Of Contents
Very Important Safety Precauons ................................... SP-1,-2
Regional Oces ................................................................ 1.010-1
Technical Data ................................................................... Secon 1
Installaon ........................................................................ Secon 2
Operaon ......................................................................... Secon 3
Service .............................................................................. Secon 4
Illustraons ....................................................................... Secon 5
Spare Parts List ................................................................. Secon 6
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
VERY IMPORTANT SAFETY PRECAUTIONS
This page provides very important safety informaon related to safety in installaon, operaon, and mainte-
nance of this equipment.
WARNING
TO AVOID POSSIBLE SEVERE PERSONAL INJURY OR EQUIPMENT DAMAGE, OBSERVE THE FOLLOWING:
ALL USERS OF THIS EQUIPMENT SHOULD BE MADE AWARE OF THE PROBLEMS ASSOCIATED WITH HANDLING
HAZARDOUS MATERIALS IN EITHER LIQUID OR GASEOUS FORM AND OF THE EFFECTS OF EXPOSURE TO THEIR
FUMES. REFERENCE SHOULD BE MADE TO THE LITERATURE AVAILABLE FROM THE SUPPLIERS OF THESE CHEMI-
CALS, PARTICULAR ATTENTION BEING PAID TO THE INFORMATION AND ADVICE ON PROTECTIVE CLOTHING.
THIS EQUIPMENT IS CONNECTED TO LINE VOLTAGE. IT IS ESSENTIAL THAT THE UTMOST CARE IS TAKEN WHEN
WORK IS CARRIED OUT ON EQUIPMENT WHERE LINE VOLTAGES ARE PRESENT. IT IS RECOMMENDED THAT ALL
POWER SUPPLIES ARE SWITCHED OFF WHENEVER POSSIBLE.
WHEN DEALING WITH HAZARDOUS MATERIAL, IT IS THE RESPONSIBILITY OF THE EQUIPMENT USER TO OBTAIN
AND FOLLOW ALL SAFETY PRECAUTIONS RECOMMENDED BY THE MATERIAL MANUFACTURER.
DO NOT DISCARD THIS INSTRUCTION BOOK UPON COMPLETION OF INSTALLATION. INFORMATION PROVIDED
IS ESSENTIAL TO PROPER AND SAFE OPERATION AND MAINTENANCE.
ADDITIONAL OR REPLACEMENT COPIES OF THIS INSTRUCTION BOOK ARE AVAILABLE FROM:
Evoqua Water Technologies
725 Wooten Road
Colorado Springs, CO 80915
Phone: (800) 524-6324
NOTE
Minor part number changes may be incorporated into Evoqua Water Technologies products from me to me
that are not immediately reected in the instrucon book. If such a change apparently has been made in your
equipment and does not appear to be reected in your instrucon book, contact your local Evoqua Water
Technologies sales oce for informaon.
Please include the equipment serial number in all correspondence. It is essenal for eecve communicaon
and proper equipment idencaon.
SP-1
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
REGIONAL OFFICES
INSTALLATION, OPERATION, MAINTENANCE, AND SERVICE INFORMATION
Direct any quesons concerning this equipment that are not answered in the instrucon book to the Reseller
from whom the equipment was purchased. If the equipment was purchased directly from Evoqua Water Tech-
nologies, Colorado Springs, CO contact the oce indicated below.
UNITED STATES
725 Wooten Road
Colorado Springs, CO 80915
TEL: (800) 524-6324
CANADA
If the equipment was purchased directly from Evoqua Water Technologies, Canada, contact the nearest oce
indicated below.
ONTARIO QUEBEC
Evoqua Water Technologies Ltd. Evoqua Technologies des Eaux Itee
2045 Drew Road 505 Levy Street
Mississauga, Ontario St. Laurent, Quebec
L5S 1S4 H4R 2N9
(905) 944-2800 (450) 582-4266
1.010-1
WT.050.560.001.UA.IM.0714
Depolox® 3 plus RESIDUAL ANALYZER
EVOQUA W3T140188
plus
plus
plus
plus
plus
free C12 (bare electrode) FC1 (membrane type) TC1 (membrane type)
Principle of
operation
Potentiostatic 3-electrode-
amperometric, bare elec-
trode
Potentiostatic 3-electrode-
amperometric, membrane
type
Potentiostatic 3-electrode-
amperometric, membrane
type
Measurand free chlorine Cl free chlorine Cl total chlorine Cl
Application Potable water, high hard-
ness and fast response
requirements
Potable water, prefered
for low conductivity and
variable pH
Potable water, prefered
for low conductivity and
variable pH
Range 0 to 20 ppm 0 to 20 ppm 0 to 20 ppm
Zero cal. Required Not required Not required
Accuracy 0.01 mg/l or 2% F.S.
whichever is greater
0.05 mg/l or 6% F.S.
whichever is greater
0.05 mg/l or 6% F.S.
whichever is greater
Sensitivity 0.01 mg/l or 1% F.S.
whichever is greater
0.01 mg/l or 1 % F.S.
whichever is greater
0.01 mg/l or 1% F.S.
whichever is greater
Repeatability 0.01 mg/l or 2% F.S.
whichever is greater
0.02 mg/l or 3% F.S.
whichever is greater
0.02 mg/l or 3% F.S.
whichever is greater
Stability 2% F.S. under typical
conditions for 1 month
5% F.S. under typical
conditions for 1 month
5% F.S. under typical
conditions for 1 month
Response time
(T90)
90% change in less than
20 seconds
90% change in less than 5
minutes
90% change in less than 5
minutes
Sample temp. 41 to 122° F (+5 to 50° C) 41 to 113° F (+5 to 45° C) 41 to 113° F (+5 to 45° C)
Storage temp. 14 to 140° F (-10 to 60° C) 14 to 122° F (-10 to +50°
C)
14 to 122° F (-10 to +50°
C)
pH dependence pH 4 to pH 9 must have
stable pH (max. pH
variation 0.l pH); pH
compensation available
with dual input units.
Usable range pH 6 to pH
10; maximum interference
5% per pH unit.
Usable range pH 6 to pH
10; maximum interference
5% per pH unit.
Conductivity > 250 µS/cm >10 µS/cm up to 2500 µS/
cm
> 10 µS/cm up to 2500 µS/
cm
Sample water
flow
33 1/h +/- 5 liter, constant 6 1/h to 35 1/h, constant 6 l/h to 35 1/h, constant
Inlet pressure 2 to 60 psi (0.15 to 4 bar) 2 to 60 psi (0.15 to 4 bar) 2 to 60 psi (0.15 to 4 bar)
Outlet pressure 0 psi 0 psi 0 psi
Temperature
compensation
Yes, Pt 100 or Pt 1000
sensor
Yes, Pt 1000 Yes, Pt 1000
Flow switch (opt.) Yes Yes Yes
Flow regulator Yes Yes Yes
Reagents None None None
Cleaning Dynamic grit None None
Typical life time membrane: 1 year
electrolyte: 6 months
membrane: 1 year
electrolyte: 6 months
membrane: 1 year
electrolyte: 6 months
plus
CD7 (membrane type) OZ7 (membrane type)
Principle of
operation
Potentiostatic 2-electrode-
amperometric-, membrane
type
Potentiostatic 2-electrode-
amperometric-, membrane
type
Measurand Chlorine Dioxide (ClO2) Ozone (O3)
Application All water with suspended
solids less than 0.8 mm
All water with suspended
solids less than 0.8 mm
Interference Ozone and periacetic acid Chlorine Dioxide and peri-
acetic acid
Range 0 to 20 ppm 0 to 20 ppm
Zero cal. Not required Not required
Accuracy 0.05 mg/l or 6% F.S.
whichever is greater
0.05 mg/l or 6% F.S.
whichever is greater
Sensitivity 0.01 mg/l or 1 % F.S.
whichever is greater
0.01 mg/l or 1 % F.S.
whichever is greater
Repeatability 0.02 mg/l or 3% F.S.
whichever is greater
0.02 mg/l or 3% F.S.
whichever is greater
Stability ± 5% F.S. under typical
conditions for 1 month
± 5% F.S. under typical
conditions for 1 month
Response time
(T90)
90% change in less than
20 seconds
90% change in less than
50 seconds
Sample temp. 41 to 113° F (+5 to 45° C) 41 to 113° F (+5 to 45° C)
Storage temp. 14 to 122° F (-10 to +50° C) 14 to 122° F (-10 to +50° C)
pH dependence None None
Conductivity > 1 µS/cm up to 40 mS/cm > 1 µS/cm up to 40 mS/cm
Sample water
flow
6 l/h to 35 l/h, constant 6 l/h to 35 l/h, constant
Inlet pressure 2 to 60 psi (0.15 to 4 bar) 2 to 60 psi (0.15 to 4 bar)
Outlet pressure 0 psi 0 psi
Temperature com-
pensation
Yes Yes
Flow switch (opt.) Yes Yes
Flow regulator Yes Yes
Reagents None None
Cleaning None None
Typical life time membrane: 1 year
electrolyte: 6 month
membrane: 1 year
electrolyte: 6 month
plus
plus
plus
plus
plus
Table of contents
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