wtw TresCon NH4-N User manual

TresCon BA43111e07 operating manual
Analyzer module NH4-N
Remove this cover sheet!
Insert the operating manual in the TresCon main folder in the 2nd, 3rd or 4th position
depending on the mounting slot!
Coversheet

ba43111e07 05/2017
TresCon
Analyzer module NH4-N
Operating manual
TresCon NH4-N
Ser.-Nr. 00110010
WTW 82362 Weilheim Made in Germany
Reinigungslösung
CleaningSolution
StandardA
StandardA
StandardB
StandardB
Reagenz
Reagent
Ablauf
V3
V2 V4
Thermoblock
Probe
Sample
Meßkette/Probe
TresCon NH4-N
Pumpschlauch Standard/Probe
rot / rot / rot
Pumpschlauch Reagenz
orange / gelb / orange
Pump Tube Standard/Sample
red / red / red
Pump Tube Reagent
orange / yellow / orange
V1
gelb
yellow
orange
orange
grün
green
blau
blue
blau
blue
rot
red
grün
green
P3
P2P1

NH4-N
ba43111e07 05/2017
Target group This manual is intended for all persons who are familiar with the instal-
lation, operation and maintenance of WTW analyzers.
Detailed information on the previous experience required and the quali-
fication of the user are given in the chapter, SAFETY, on page 2-1 in the
TERMINAL volume of this manual.
Copyright ©2017, Xylem Analytics Germany GmbH
Printed in Germany.

NH4-N List of contents
0 - 5
ba43111e07 05/2017
TresCon NH4-N - List of contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.2 Retrofitting the TresCon NH4-N . . . . . . . . . . . . . 1-6
1.2.3 Connecting up the TresCon NH4-N . . . . . . . . . 1-11
1.2.4 Installing the electrode . . . . . . . . . . . . . . . . . . . 1-14
1.2.5 Initial commissioning . . . . . . . . . . . . . . . . . . . . . 1-16
1.3 Removal from service . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
1.4 Instrument parameters . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2 Manually triggering (AutoCal) calibration . . . . . . . . . . . . 2-5
2.3 Displaying calibration data . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.4 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.5 Displaying/changing the AutoCal parameters . . . . . . . . 2-8
2.6 Displaying/changing AutoClean parameters . . . . . . . . 2-11
2.7 Displaying/changing the Display parameters . . . . . . . . 2-13
2.8 Displaying/changing the attenuation parameters . . . . . 2-15
2.9 Displaying/changing the interval program parameters . 2-17
2.10 Displaying/changing the AutoAdapt parameters . . . . . 2-20
2.11 Displaying/changing the measuring interval . . . . . . . . . 2-22
2.12 Displaying/changing the dilution parameter . . . . . . . . . 2-24
3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Starting the AutoClean procedure . . . . . . . . . . . . . . . . . 3-4
3.2 Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3 Replenishing the cleaning solution . . . . . . . . . . . . . . . . . 3-8
3.4 Replenishing standard A . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.5 Replenishing standard B . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.6 Replenishing the reagent . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.7 Emptying the system . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.8 Displacing/replacing pump tubings . . . . . . . . . . . . . . . 3-20
3.8.1 Replacing the pump tubings . . . . . . . . . . . . . . . 3-22
3.8.2 Displacing the pump tubings . . . . . . . . . . . . . . . 3-27
3.9 Exchanging the membrane cap / electrode . . . . . . . . . 3-31
3.10 Replacing the tubing system . . . . . . . . . . . . . . . . . . . . 3-35

List of contents NH4-N
0 - 6 ba43111e07 05/2017
3.11 Displaying/changing service intervals . . . . . . . . . . . . . .3-42
3.12 Switching AutoFlow on/off . . . . . . . . . . . . . . . . . . . . . .3-44
4 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.2 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.3 Service messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
6 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 AutoTherm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2 Accessories and material subject to wear . . . . . . . . . . .6-3
6.3 Pressure sensors and messages . . . . . . . . . . . . . . . . . .6-5
6.4 RS commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
6.5 Instrument activities . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10
6.6 Preparing the reagent . . . . . . . . . . . . . . . . . . . . . . . . . .6-12
7 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

NH4-N Overview
1 - 1
ba43111e07 05/2017
1Overview
This operating manual has a modular structure, i. e. it contains a
separate operating manual for the individual components of the
multiparameter analyzer (see Fig. 1-1). This volume covers the
operation of the TresCon analyzer module for NH4-N (Fig. 1-1,
highlighted in gray).
Fig. 1-1 Structure of the operating manual (example)
Note
Please read chapter 2, SAFETY, in volume 1, TERMINAL, of this operating
manual before starting to work with the analyzer module.
Structure of the
operating manual
Volume 1
TresCon
Terminal
Terminal
TresCon
Module 1
TresCon
NH4-N
TresCon
Module 3
TresCon Analyzer
Operating
manual
Volume 2
TresCon
Module 1
Volume 4
TresCon
Module 3
Volume 3
TresCon
NH4-N

Overview NH4-N
1 - 2 ba43111e07 05/2017
1.1 Function
The TresCon NH4-N analyzing module operates according to the
potentiometric measuring principle with an ion-selective electrode. It
detects ammonium (NH44+) while doing so. A reagent is added to the
sample or – depending on the operating mode –to the standard.
The TresCon NH4-N operates either discontinuously or continuously
as required. Various settings and modes are available to the user so
that the instrument can be optimally adapted to any application.
The following points describe the fundamental features of the TresCon
NH4-N:
AutoCal:
The TresCon NH4-N performs an automatic 2-point calibration
(AutoCal) so that the instrument can always maintain its high degree
of absolute accuracy. To do so, aqueous ammonium solutions of
different concentrations are used as calibration standards.
AutoClean
Moreover, the TresCon NH4-N can clean the entire analyzer system
itself so that the user only has to perform a minimum amount of
maintenance.
AutoFlow
The TresCon NH4-N can also monitor the entire analyzer system
itself so it can measure fluid levels and provide early warnings and
instructions to the operator to replace specific chemicals.
AutoAdapt
The TresCon NH4-N optimizes its measuring interval according to
the current change in the measured value. As a result, reagent
consumption is reduced to a minimum.
AutoTherm
The TresCon NH4-N automatically checks and regulates the
temperature of the electrode. This ensures that the instrument
always functions safely (see section 6.1 AUTOTHERM).
Interfaces
The TresCon NH4-N has all the digital and analog interfaces
required by the industry. Thus, a standard connection is possible to
digital interfaces (RS232 and RS485), analog interfaces (0/4-20
mA) and PLC interfaces (12 relay contacts). A connection for an
external modem is also provided.
Note
Please read chapter 5, OPERATION, in volume 1, TERMINAL, of this
operating manual. It contains basic instructions.

NH4-N Overview
1 - 3
ba43111e07 05/2017
Fig. 1-2 Schematic diagram
Component (quantity) Designation
Valves (4) V1,...V4
Pumps (1) P1A/B
Pressure sensors (3) P1, P2, P3
Schematic diagram
Standard/sample pump tubing: red/red/red
Reagent pump tubing: orange/yellow/orange
Configuration

Overview NH4-N
1 - 4 ba43111e07 05/2017
Control LED A light emitting diode located on the measuring block provides the
following information:
TresCon NH4-N
Ser.-Nr. 00110010
WTW 82362 Weilheim Made in Germany
Reinigungslösung
CleaningSolution
StandardA
StandardA
StandardB
StandardB
Reagenz
Reagent
Ablauf
V3
V2 V4
Thermoblock
Probe
Sample
Meßkette/Probe
TresCon NH4-N
Pumpschlauch Standard/Probe
rot / rot / rot
Pumpschlauch Reagenz
orange / gelb / orange
PumpTube Standard/Sample
red / red / red
PumpTube Reagent
orange / yellow / orange
V1
gelb
yellow
orange
orange
grün
green
blau
blue
blau
blue
rot
red
grün
green
P3
P2P1
Control LED
Electrode
Thermoblock
T-piece
V4 (back side)
P1A, P1B
V1, V2, V3 (back side)
View of the TresCon
NH4-N
LED illuminates Meaning
red, continuous Malfunction of any type
green, continuous A service is being performed on the analyzer
module or a designation is being given to the
analyzer module (terminal software)
green, flashing System OK

NH4-N Overview
1 - 5
ba43111e07 05/2017
1.2 Commissioning
1.2.1 Scope of delivery
When the analyzer is delivered, it already has individual analyzer
modules integrated in it and is ready for use.
TresCon NH4-N is available as a retrofit kit with the following scope of
delivery:
TresCon NH4-N analyzer module
Operating manual to be added to the main folder
Reagents for 4 months
– 8 packages of sodium hydroxide pellets and Na2EDTA (for a total
of 80 l reagent)
– 2 bottles of S/ AII - A111: 1.5 l standard AII 5 mg/l NH4-N
– 2 bottles of S/ BII - A111: 1.5 l standard BII 50 mg/l NH4-N
– 2 bottles of C/ A111: 1.5 l cleaning solution (10 % citric acid)
NH500/TC: Ammonium electrode incl. 3 exchange membrane caps
2 Wpack/ A111: set of replacement tubes
TC/ÜB 1: overflow vessel
S/ AI - N 211: 10 l container with label, filled with deionized water to
prepare the reagent solution
1 lid for standard A, yellow
1 lid for standard B, orange
1 lid for cleaning solution, blue
1 lid for reagent, green
Safety datasheets The current safety datasheets for all chemicals and solutions used can
be found on the Internet under www.WTW.com.

Overview NH4-N
1 - 6 ba43111e07 05/2017
1.2.2 Retrofitting the TresCon NH4-N
This section is only necessary if the TresCon NH4-N was purchased as
a retrofit kit.
Preparatory
activities
Installing the TresCon NH4-N in a measuring system can -depending
on the configuration- necessitate various preparations:
Permeate supply:
Set up a separate permeate supply (with its own catch location) or
connect it to an existing permeate supply (catch location with further
analyzer modules)
Chemicals:
The reagent must be prepared according to section 6.6 PREPARING
THE REAGENT.
Note
Read the INSTALLATION section in the TERMINAL volume of the operating
manual before starting the retrofit!

NH4-N Overview
1 - 7
ba43111e07 05/2017
Fig. 1-3 Removing the cover plate
1Switch off the TresCon at the power switch (on the mounting
stand).
2 Open the door of the TresCon.
3Undo the screws (B) of the dummy plate at the mounting
location (see Fig. 1-3). The screws and nuts are required in
step 5!
4 Remove the dummy plate at the mounting location.
Installing the analyzer
module
TresCon
TresCon N0x-N
Ser.-Nr. 00110020
WTW82362 Weilheim Made in Germany
TresConNOx-N
Reinigungslösung
CleaningSolution
Ablauf
V2
Thermoblock
Probe
Sample
V1
HO dest.
HO dest.
2
2
blau
blue
blau
blue
rot
red
PumpschlauchStandard/Probe
blau/ blau / blau
PumpTube Standard/Sample
blue/ blue / blue
rot
red
P3
P1
10 fixing screws (B)

Overview NH4-N
1 - 8 ba43111e07 05/2017
Fig. 1-4 Installing the TresCon NH4-N
5Place the TresCon NH4-N in the mounting frame and screw it
into place with the 10 screws (B).
6Undo the screws (A) of the mounting frame (see Fig. 1-4).
7 Carefully tilt out the mounting frame forwards.
TresCon
TresCon N0x-N
Ser.-Nr. 00110020
WTW82362 Weilheim Made in Germany
TresConNOx-N
Reinigungslösung
CleaningSolution
Ablauf
V2
Thermoblock
Probe
Sample
V1
HO dest.
HO dest.
2
2
blau
blue
blau
blue
rot
red
PumpschlauchStandard/Probe
blau/ blau / blau
PumpTube Standard/Sample
blue/ blue / blue
rot
red
P3
P1
AA
TresCon NH4-N
Ser.-Nr. 00110010
WTW82362 Weilheim Made in Germany
Reinigungslösung
CleaningSolution
StandardA
StandardA
StandardB
StandardB
Reagenz
Reagent
Ablauf
V3
V2 V4
Thermoblock
Probe
Sample
Meßkette/Probe
TresConNH4-N
PumpschlauchStandard/Probe
rot/ rot / rot
PumpschlauchReagenz
orange / gelb / orange
PumpTube Standard/Sample
red/ red / red
PumpTube Reagent
orange / yellow/ orange
V1
gelb
yellow
orange
orange
grün
green
blau
blue
blau
blue
rot
red
grün
green
P3
P2P1
10 fixing screws (B)

NH4-N Overview
1 - 9
ba43111e07 05/2017
Note
The number (1...3) of the open socket must agree with the position of
the TresCon NH4-N in the frame (see figure).
Fig. 1-5 Numbers of the mounting slots
Fig. 1-6 Plug connector on the back of the TresCon NH4-N
8Plug the open cable connector of the TresCon NH4-N into the
open socket with the internal number of the mounting slot.
Cable connection
Terminal
1 2 3Internal numbers
Mounting slots
TresCon
Plug

Overview NH4-N
1 - 10 ba43111e07 05/2017
Inside diameter (ID) of outlet tube: 10 mm
Inside diameter (ID) of ventilation tube: 3 mm
Fig. 1-7 Adapter for outlet
9Use scissors to cut the outlet and ventilation tubes to a suitable
length for the mounting slot (see table).
Mounting slot 123
Length 0.80 m 1.00 m 1.20 m
10 Connect the open outlet tube of the TresCon NH4-N to the
adapter inside the enclosure (see Fig. 1-7).
11 Also connect the ventilation tube to the adapter.
12 Carefully swing the mounting frame back into place.
13 Fix the mounting frame in place with the two screws (A) as
shown in Fig. 1-4.
Connecting the outlet
Tube dimensions
Outlet adapter
(Inside enclosure floor)
Outlet tube
(1 per module)
Ventilation tube
(1 per module)

NH4-N Overview
1 - 11
ba43111e07 05/2017
1.2.3 Connecting up the TresCon NH4-N
This section describes how to connect the permeate supply, outlet and
chemicals.
Warning
Only specially trained employees are allowed to work on the analyzing
section. Always take safety precautions when handling chemicals and
comply with the relevant regulations. This applies in particular to the
warning instructions on the chemical containers and in the safety
datasheets.
Always use the proper safety equipment!
Fig. 1-8 Connecting the permeate supply
1Feed the permeate tubing of the TresCon NH4-N (black, ID =
1.5 mm) through the hole drilled in the bottom of the enclosure.
2 Insert the permeate tubing into the overflow vessel provided.
Wear protective
goggles
Wear protective
gloves
Wear protective
clothing
Connecting the
permeate supply
Enclosure base
To the overflow
vessel
Drilled hole

Overview NH4-N
1 - 12 ba43111e07 05/2017
Note
If the TresCon NH4-N is to be connected to an overflow vessel that is
already installed (measuring several parameters at a single sample
catch location), the overflow vessel at this position must have 3
permeate connecting pieces. If this is not the case, replace the overflow
vessel.
If the TresCon NH4-N is to measure a new sample location, another
overflow vessel must be mounted.
1Push the tubes (color coding given below) for standard A,
standard B, reagent and cleaning solution through the holes
drilled in the bottom of the enclosure.
blue Cleaning solution (10 % citric acid)
yellow Standard A
orange Standard B
green Reagent (NaOH)
Connecting the supply
of consumables
blue
yellow
orange
green
Color coding
of the consumables

NH4-N Overview
1 - 13
ba43111e07 05/2017
Fig. 1-9 Color coding
Connecting the reagent The reagent must be prepared according to section 6.6 PREPARING THE
REAGENT. Reagent contains NaOH.
Reagent causes severe corrosion
Do not allow this substance to get into the hands of children. Wear
suitable protective gloves and goggles/face mask when working with
this substance.
If this substance gets into the eyes, rinse thoroughly with water and
consult a doctor.
2Place a full container of cleaning solution (10% citric acid) on
the tray.
3 Connect the (blue) screw cap with the (blue) suction hose (see
Fig. 1-9).
4Place a full container of standard A on the tray.
5 Connect the (yellow) screw cap with the (yellow) suction hose.
6Place a full container of standard B on the tray.
7 Connect the (orange) screw cap with the (orange) suction hose
(see Fig. 1-9).
Vent
Color Coding
Connecting the cleaning
solution
Connecting standard A
Connecting standard B
8Place a full container of reagent on the tray.

Overview NH4-N
1 - 14 ba43111e07 05/2017
1.2.4 Installing the electrode
An electrode of type NH500/TC is contained within the scope of
delivery.
Note
Prepare the electrode according to the operating manual of the
electrode.
Attention
Do not touch the electrical contacts on the connector! Contamination
leads to a change in resistance.
Fig. 1-10 Removing the transport protection
9 Connect the (green) screw cap with the (green) suction hose
(see Fig. 1-9). When doing so make sure the vent in the lid is
free and dry.
1Unscrew the knurled screws on the measuring block and
remove the plexiglass cover (1).
2Unscrew the transport protection from the flow-thru vessel:
Turn it in the direction of rotation and, at the same time, pull it
(2).
Removing the transport
protection
2
1
Transport protection