triOS TpH User manual

TpH
OPERATING INSTRUCTIONS

1
TABLE OF CONTENTS
Table of Contents
1 General Information 2
1.1 Introduction 2
1.2 Health and safety information 3
1.3 Warnings 4
1.4 Users and Operating Requirements 4
1.5 Intended use 4
1.6 Proper disposal 5
1.7 Certicates and Approvals 5
2 Introduction 6
2.1 Product Identication 6
2.2 Scope of delivery 7
2.3 Measurement Principle and Design 7
3 Commissioning 8
3.1 Electrical installation 8
3.1.1 Fixed Cable with M12 Industrial Plug 8
3.2 Interfaces 8
3.2.1 Serial Interface 8
4 Use 9
4.1 Normal operation 9
4.2 Bypass Installation 9
4.3 Support Tube Installation 10
4.4 Storage 10
5 Calibration 11
5.1 pH Calibration 11
5.2 Measurement properties 13
5.2.1 Inuences on the Measurement 13
5.2.2 Temperature compensation 13
6 Malfunction and Maintenance 14
6.1 Cleaning and Upkeep 14
6.2 Maintenance and Inspection 14
6.2.1 Temperature Calibration 14
6.2.2 Replacing the sensor at TriBox3 15
6.3 Returns 15
7 Technical Data 16
7.1 Technical specications 16
7.2 External Dimensions 17
8 Accessories 18
8.1 TriBox3 18
8.2 TriBox mini 18
8.3 FlowCell for eCHEM sensors 19
8.4 pH Buer Set 19
9 Warranty 20
10 Customer service 20
11 Contact 21
12 Keyword Index 22
Annex 24

2D01-068en201913 Manual TpH
General Information // TpH
Use
Use
Calibration
Calibration
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Malfunction &
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Commissioning
Commissioning
Introduction
Introduction
General
Information
General
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FAQ Technical Data
Technical Data
Warranty
Warranty
Customer
Service
Customer
Service
Contact
Contact
Keyword Index
Keyword Index
Accessories
Accessories
1 General Information
1.1 Introduction
Welcome to TriOS.
We are glad that you have chosen to purchase our TpH pH sensor.
The TpH is based on the electrochemical measuring method with a measuring electrode and a reference electrode. This intel-
ligent sensor stores calibrations internally. This enables a "plug-and-play" system without recalibration when the location or
measuring transducer is changed.
In this manual, you will nd all the information you will need to commission the pH sensor. Technical specications as well as
detection limits and the dimensions can be found in chapter 7.
Please note that the user is responsible to comply with local and state regulations for the installation of electronic equipment.
Any damage caused by incorrect use or unprofessional installation will not be covered by the warranty. All sensors and ac-
cessories supplied by TriOS Mess- und Datentechnik GmbH must be installed and operated in accordance with the specica-
tions provided by TriOS Mess- und Datentechnik GmbH. All parts were designed and tested in accordance with international
standards on electronic instruments. The device meets the requirements of the international standards on electromagnetic
compatibility. Please use only original TriOS accessories and cables to ensure smooth and professional use of the devices.
Read this manual carefully before using the equipment and save this manual for future reference. Before commissioning the
sensor, please make sure that you have read and understood the following safety precautions. Always make sure that the
sensor is operated correctly. The safety precautions noted on the following pages are intended to provide a simple and correct
operation of the instrument and all its accessories to prevent harm from coming to you, other people or devices.
Copyright Notice
All content in this manual, i.e. texts, photographs and graphics, are protected by copyright. Unless expressly stated otherwise,
TriOS Mess- und Datentechnik GmbH is the owner of the copyright. Persons who violate the copyright shall be liable pursuant
to § 106 et seq of the German copyright law, they will be warned at their own expense and must pay compensation.
In case of inconsistence, the German original version shall prevail.
NOTICE

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TpH // General Information
Use
Use
Calibration
Calibration
Malfunction &
Maintenance
Malfunction &
Maintenance
Commissioning
Commissioning
Introduction
Introduction
General
Information
General
Information FAQ
FAQ Technical Data
Technical Data
Warranty
Warranty
Customer
Service
Customer
Service
Contact
Contact
Keyword Index
Keyword Index
Accessories
Accessories
1.2 Health and safety information
This manual contains important information on health and safety rules.This information is labelled according to the internatio-
nal specications of ANSI Z535.6 ("Product safety information in product manuals, instructions and other collateral materials")
and must be strictly followed. A distinction is made between the following categories:
Tip / Useful Information
Can result in damage to property
Warning / may lead to serious injury or death
Caution / may cause moderate injury
Electromagnetic Waves
Devices that radiate strong electromagnetic waves can inuence the measurement data or result in a malfunction of the sen-
sor. Avoid using the following devices in the same room as the TriOS sensor: mobile phones, cordless phones, transmitters/
receivers and other electrical devices that produce electromagnetic waves.
Reagents
Follow the safety and operating instructions of the manufacturer when using reagents. Observe the valid Hazardous Materials
Ordinance for reagents (German GefStoV)!
Biological Safety
Liquid waste may be biologically dangerous. Therefore, you should always wear gloves when working with such materials.
Please observe the currently valid biological agents regulation!
Waste
When handling liquid waste, the regulations on water pollution, drainage and waste disposal must be observed.
Danger warning / will lead to serious injury or death
DANGER
WARNING
CAUTION
NOTICE

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General Information // TpH
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Introduction
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Technical Data
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Customer
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Accessories
Accessories
1.3 Warnings
• this sensor has been developed for use in industry and science. It should only be used for the measurement of
aqueous solutions, e.g. process waste water, river water or sea water.
• The material resistance should be checked after every use.
• Do not cut, damage or change the cord. Make sure that no heavy objects are placed on the cord and that the cord is
not folded. Make sure that the cord is not run near hot surfaces.
• If the sensor cable is damaged, it must be replaced with an original part by the customer service of TriOS Mess- und
Datentechnik GmbH.
• Stop operation of the sensor in the event of excessive heat development (i.e. if it is hot to the touch).
Switch o the sensor immediately and remove the cable from the power supply. Please contact your dealer
or the TriOS customer service.
• Never try to disassemble or modify a part of the sensor if such a procedure is not explicitly described in this manual.
Inspections, modications and repairs may only be carried out by the dealer or by qualied experts authorized by
TriOS.
Devices from TriOS Mess- und Datentechnik GmbH meet the highest safety standards. Repairs to the device (which involve the
replacement of the connecting cable) must be carried out by TriOS Mess- und Datentechnik GmbH or by a workshop authori-
zed by TriOS. Defective, improper repairs can lead to accidents and injuries.
1.4 Users and Operating Requirements
The TpH sensor has been developed for use in industry and science. The target group for the operation of the TpH sensor is
technically skilled sta in plants, sewage treatment plants, water plants and institutes. The use of this device often requires the
handling of hazardous substances. We assume that operators are familiar with dealing with hazardous substances due to their
professional training and experience. The operating personnel must be able to correctly understand and implement the safety
labels and information on the packaging and in the package inserts of the test kits.
1.5 Intended use
The purpose of the TpH sensor is exclusively to measure pH values in aqueous solutions, as described in this manual. In this
respect, the TpH sensor is an immersion sensor used under water or in conjunction with ow cells. Please note the technical
data of the accessory parts. Any other use is not considered to be in compliance with the intended use.
TriOS does not guarantee the plausibility of the measured values. The user is always responsib-
le for the monitoring and interpretation of the measured values.
DANGER

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TpH // General Information
Use
Use
Calibration
Calibration
Malfunction &
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Malfunction &
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Commissioning
Commissioning
Introduction
Introduction
General
Information
General
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FAQ Technical Data
Technical Data
Warranty
Warranty
Customer
Service
Customer
Service
Contact
Contact
Keyword Index
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Accessories
Accessories
The compact and robust sensor is particularly suitable for the following areas of application:
• Industrial and municipal sewage treatment plants
• Wastewater management
• Monitoring of surface waters
• Aquaculture and sh farming
• Drinking water monitoring
Use in other media can damage the sensor. For the use of the TpH sensor in other media than those specied in this manual,
please contact the customer service of TriOS Mess- und Datentechnik GmbH (suppor[email protected]).
According to current scientic knowledge, the device is safe to use when it is handled according to the instructions in this
user manual.
1.6 Proper disposal
At the end of its service life, the device and its accessories may be returned for environmentally friendly disposal.The preceding
professional decontamination must be proven with a certicate. Please contact us for more details before you send the device
back.
Shipping address:
TriOS Mess- und Datentechnik GmbH
Bürgermeister-Brötje-Str. 25
26180 Rastede
Germany
Tel.: [phone] - 0
Fax: [phone] – 20
1.7 Certicates and Approvals
This product meets all the requirements of the harmonized European standards. It therefore meets the legal requirements
of the EC guidelines. TriOS Mess- und Datentechnik GmbH conrms the successful testing of the product by axing the CE
marking (see annex).

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Introduction // TpH
Use
Use
Calibration
Calibration
Malfunction &
Maintenance
Malfunction &
Maintenance
Commissioning
Commissioning
Introduction
Introduction
General
Information
General
Information
FAQ
FAQ Technical Data
Technical Data
Warranty
Warranty
Customer
Service
Customer
Service
Contact
Contact
Keyword Index
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Accessories
Accessories
2 Introduction
The TpH is based on the electrochemical measuring method with a measuring electrode and a reference electrode. This intel-
ligent sensor stores calibrations internally. This enables a "plug-and-play" system without recalibration when the location or
measuring transducer is changed.
Built-in encapsulated preamplier for reliability
The encapsulated design protects the sensor's built-in preamplier from moisture and humidity, ensuring reliable sensor ope-
ration. The preamplier produces a strong signal so that the sensor can be located up to 300m away from the controller.
2.1 Product Identication
All TriOS Mess- und Datentechnik GmbH products have a label, which clearly shows the product designation.
There is also a rating plate on the sensor with the following information that you can use to uniquely identify the product:
Serial number
Product type
Power supply
Electric
In addition to the product bar code, the rating plate includes the TriOS Mess- und Datentechnik GmbH logo and
the quality label.
Please note that the specications given here are for illustration purposes only and may deviate depending on the version of
the product.
Assembled
in Europe
Serial No 068XXXXX
Type TpH 2m
Sensor Power
12...24 VDC
Sensor Interface
Modbus RTU
TriOS eCHEM Serie
068XXXXX

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TpH // Introduction
Use
Use
Calibration
Calibration
Malfunction &
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Malfunction &
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Commissioning
Commissioning
Introduction
Introduction
General
Information
General
Information
FAQ
FAQ Technical Data
Technical Data
Warranty
Warranty
Customer
Service
Customer
Service
Contact
Contact
Keyword Index
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Accessories
Accessories
2.2 Scope of delivery
The delivery contains the following components:
Sensor
Operating Instructions
Accessories (if applicable)
Keep the original packaging of the device in case it needs to be returned for maintenance or repairs.
2.3 Measurement Principle and Design
Cable bushing
Porous reference compound (HDPE*)
Flat pH glass
* High-density polyethylene.

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Commissioning // TpH
3 Commissioning
This chapter deals with the commissioning of the sensor. Please pay particular attention to this section and follow the safety
precautions to protect the sensor from damage and yourself from injury.
Before the sensor is put into operation, it is important to ensure that it is securely attached and all connections are connected
correctly.
3.1 Electrical installation
3.1.1 Fixed Cable with M12 Industrial Plug
The sensor can be operated with 12...24 VDC.
1. RS-485 A
2. RS-485 B
3. Not assigned
4. Not assigned
5. Not assigned
6. Not assigned
7. Ground (Power + Ser. Interface)
8. Power 12...24 VDC
Ensure correct polarity of the supply voltage, because otherwise the sensor may be damaged.
The sensor is ready for commissioning as soon as the installation of accessories is complete, it is connected to your control
device and the conguration is complete.
3.2 Electric
3.2.1 Serial Interface
The serial interface of the sensor is RS-485 (9600/8-N-1).
With RS-485, voltages from -5V to +5 V to ground are possible. RS-485 uses a dierential signal with the sign-negative potential
of the A line is put on the B line. The dierential value between lines A and B is the decisive factor for the transmission robust-
ness against conducted noise signals.
The protocol used is Modbus RTU. A detailed description of the Modbus RTU protocol for TpH can be found in the annex.
NOTICE
NOTICE

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Use Commissioning
TpH // Use
4 Use
The TpH sensor can be operated with all TriOS controllers. Instructions for correct installation can be found in the relevant
controller manual.
4.1 Normal operation
The sensor is ready for commissioning as soon as the installation of accessories is complete, it is connected to your control
device and the conguration is complete.
Remove the black protective cap by holding the sensor vertically downwards and unscrewing the cap. The sensor is supplied
with a lled protective cap containing a solution of pH4 buer and potassium chloride. Therefore, the sensor does not need to
be activated in order to achieve optimum measurements. Please note the minimum immersion depth up to the ring.
The sensor is now immersed in the measuring medium. The black sensor head should be completely surrounded by the medi-
um. Otherwise, measurement uctuations may occur.
Before a measurement, all air bubbles under the membrane must rst be removed by light shaking.
As soon as the sensor is connected to the power supply, it starts to measure. This is indicated by the green light in the upper
sensor area. To obtain stable and safe measurements, please wait for temperature stabilisation after introducing the sensor
into the measuring environment.
The TpH sensor should be calibrated at regular intervals. The intervals depend on the respective application. If the TpH is
used in the highly alkaline range, the calibration intervals should be as close as possible. For information on calibration, see
Chapter 5.
The TpH are classied as consumables and therefore have a limited service life, depending on the user's application. Under
normal conditions, the typical life span is about one year. The service life of the TpH can be extended by regular cleaning.
4.2 Bypass Installation
A suitable TriOS ow cell is available to integrate the sensor into a bypass installation. The ow cell is designed according to a
modular system and makes it possible to adapt or extend the system as required.
If the sensor is dry, it must rst be conditioned in pH4 buer for 24 hours.
NOTICE

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AccessoriesCalibrationUse
Use // TpH
4.3 Support Tube Installation
TriOS provides two adapter pieces for installing the TpH sensor in existing tube systems:
• NPT1 adapter ZM46 (incl. cap nut ZM13)
• G1 adapter ZM41 (incl. cap nut ZM13)
Assembly process
9
Version 1.1
Update: January 2016
AQUALABO CONTROLE
35 Rue Michel Marion –56850 CAUDAN, FRANCE
Tel.: [phone] –Fax: [phone]
Short pole
Long pole
The long poles are available in elbow version, for installations in aeration basin, and straight, for
applications in open channel. Every pole is equipped with an elbowed shutter and with waterproofness
joints. The lower part includes a nozzle which is adapted to the sensor what assures its mechanical
support.
Elbowed shutter
Ring shutter
Nozzle
The short pole is available in 2 versions :
- version with elbowed shutter. The nozzle of support is included in
the offer.
PF-ACC-C-00266
STRAIGHT SHORT POLE
FOR OPTOD SENSOR (1495
mm, ELBOWED SHUTTER)
PF-ACC-C-00267
STRAIGHT SHORT POLE
FOR PHEHT SENSOR (1495
mm, ELBOWED SHUTTER)
PF-ACC-C-00268
STRAIGHT SHORT POLE
FOR C4E/NTU SENSOR
(1495 mm, ELBOWED
SHUTTER)
- version with shutter for mounting with chain The nozzle of
support is included in the offer.
PF-ACC-C-00269
STRAIGHT SHORT POLE
FOR OPTOD SENSOR (1550
mm, RING SHUTTER)
PF-ACC-C-00270
STRAIGHT SHORT POLE
FOR PHEHT SENSOR (1550
mm, RING SHUTTER)
PF-ACC-C-00271
STRAIGHT SHORT POLE
FOR C4E/NTU SENSOR
(1550 mm, RING SHUTTER)
- Elbowed pole with elbowed shutter
PF-ACC-C-00230
90° ELBOW LONG POLE FOR
OPTOD SENSOR (2955 mm,
ELBOWED SHUTTER)
PF-ACC-C-00261
90° ELBOW LONG POLE FOR
PHEHT SENSOR (2955 mm,
ELBOWED SHUTTER)
PF-ACC-C-00262
90° ELBOW LONG PERCH
FOR C4E/NTU SENSOR (2955
mm, ELBOWED SHUTTER)
- Straight long pole with elbowed shutter
PF-ACC-C-00263
STRAIGHT LONG POLE FOR
OPTOD SENSOR (2745 mm,
ELBOWED SHUTTER)
PF-ACC-C-00264
STRAIGHT LONG POLE FOR
PHEHT SENSOR (2745 mm,
ELBOWED SHUTTER)
PF-ACC-C-00265
STRAIGHT LONG POLE FOR
C4E/NTU SENSOR (2745 mm,
ELBOWED SHUTTER)
Elbowed
shutter
1. Guide the sensor cable from the side through the adapter, onto which the screw cap is later screwed
(short thread).
2. Pull the complete cable through and push the sensor into the adapter as far as it will go
(up to the guide obstacle).
3. Fix the sensor with the mounting cap.
4. The sensor and adapter can now be installed in the support tube.
Support tube
Adapter ZM46/ZM41
O-ring 23x2.5 NBR
Cap nut ZM13
4.4 Storage
Never store the sensor dry. Always keep the protective cap and reuse it for storage in a solution of pH4 buer and potassium
chloride or a 3 molar KCl solution.
Never store the TpH sensor dry.
If a sensor or the electrode of the sensor should nevertheless have dried out, the hydrated layer on the electrode must form
anew. The sensor must be immersed in a 3 molar KCl solution for several hours (>12h).
Never store the TpH sensor in distilled water!
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
TriOS GmbH
Tel. [phone]
DIN ISO 2768-f
(Oberfl.) Maßstab: DIN A3 (Gewicht) 1,0 kg
(Werkstoff, Halbzeug)
G1-Adapter TpH
Name
Witte
Datum
07.06.2018Bearb.
Änder.
Ursprung:
TriOS GmbH
Bgm.-Brötje-Str. 25
26180 Rastede ZM401802
Ersatz für: Ersatz durch:
Blatt
1 von
1
1:2
ENTWICKLUNG
Freig.
iProperties - Übersicht - Kommentare im Modell:
iProperties - Übersicht - Kommentare In der Zeichnung:
Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind verboten,
soweit nicht ausdrücklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte vorbehalten.
The reproduction, distribution and utilization of this document as well as the communication of its contents to others
without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved.
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
TriOS GmbH
Tel. [phone]
DIN ISO 2768-f
(Oberfl.) Maßstab: DIN A3 (Gewicht) 1,0 kg
(Werkstoff, Halbzeug)
G1-Adapter TpH
Name
Witte
Datum
07.06.2018Bearb.
Änder.
Ursprung:
TriOS GmbH
Bgm.-Brötje-Str. 25
26180 Rastede ZM401802
Ersatz für: Ersatz durch:
Blatt
1 von
1
1:2
ENTWICKLUNG
Freig.
iProperties - Übersicht - Kommentare im Modell:
iProperties - Übersicht - Kommentare In der Zeichnung:
Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind verboten,
soweit nicht ausdrücklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte vorbehalten.
The reproduction, distribution and utilization of this document as well as the communication of its contents to others
without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved.
NOTICE
NOTICE

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Calibration Use
TpH // Calibration
5 Calibration
TpH sensors that have not been used for a long time or that are new should be calibrated before measurement. Calibration
should then be repeated at regular intervals. The calibration intervals depend on the type of application. Checks with standard
solutions are recommended to determine the intervals.TriOS oers suitably bottled buer solutions pH4 and pH7 (see chapter
8).
Calibration is possible both on the controllers (see chapter 8) and via Modbus. The calibrations performed are stored internally
by the sensor. Thus, the current calibration is always present.
5.1 pH Calibration
With the calibration, the zero value (pH7) and the scaling factor (pH4) are calibrated. For calibration, select pH buer solutions
with an accuracy of +/- 0.01pH and observe the temperature. Fresh or newly prepared solutions must be used for each calibra-
tion! TriOS oers an ideal set for the TpH calibration with a sensor holder and buer solutions for 6 calibrations.
Do not wipe the electrode.
NOTICE
Procedure:
• Since the pH value is temperature-dependent, it is recommended to check the temperature with a reference
thermometer before the rst pH calibration.
• If the temperature measured by the sensor deviates more than 1°C from the one measured by the reference
thermometer, a calibration of the temperature oset is necessary.
• Rinse the sensor with distilled water.
• Immerse the TpH in pH7 buer solution, the sensor head (black) should be immersed as completely as possible
(the picture on the next page shows the immersion depth in the beaker with the buer solution as a red line).
Otherwise, measurement uctuations may occur.
Buer Solution pH7
6 x 25 ml
Buer Solution pH4
6 x 25 ml
Do not stir the sensor in the buer solution
NOTICE

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The pH value depends on temperature!
NOTICE
• Rinse the sensor again with distilled water.
• Immerse the TpH in pH4 buer solution, the sensor head (black) should be immersed as completely as possible
(the picture below shows the immersion depth in the beaker with the buer solution as a red line). Otherwise,
measurement uctuations may occur.
• Allow the sensor to warm up for approx. 5 minutes and then calibrate to pH4 (or pH10). Observe the temperature!
• Rinse the sensor with distilled water.
• You can now begin your measurements.
• Dispose the buer solutions after use.
• Immerse the sensor slowly into the small buer solution and move it slightly so the membrane is wetted by the
buer solution.
• Allow the sensor to warm up for approx. 5 minutes and then calibrate to pH7. Observe the temperature!
Optimum immersion depth in applica-
tion with TriOS buer solution.
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
Name: TpH
Date: 23.02.2018 Rev.: TP101711
Note: Dimensions in mm
Document: D10-068en201805
TriOS Mess- und Datentechnik GmbH ●Bgm.-Brötje-Str. 25 ●26180 Rastede ●Germany
fon: +49 4402 / 69 67 0 - 0 ●fax: - 20 ●web: http://www.trios.de ●e-mail: [e-mail]
Dimension Drawing: TpH
Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind verboten,
soweit nicht ausdrücklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte vorbehalten.
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Page 1 of 1
Note: iProperty -> Übersicht -> Kommentar
Preliminary: iProperty -> Status -> Status
Titel: iProperty -> Übersicht -> Titel

23
~

27
~
138~ 36,5~
AF = across flats
178~
Position Material
sensor body Polyethylene Terephthalate (PET)
Polyphenylene Sulfide (PPS)
sealings Nitrile Butadiene Rubber (NBR)
pH Stem pH Sensing Glass

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5.2 Measurement Properties
5.2.1 Inuences on the Measurement
• The pH measurement depends on the following parameters:
• High temperatures of the measuring medium accelerate the ageing of the electrode.
• Note the immersion depth: a too shallow immersion depth can lead to uctuating measured values.
• Air bubbles on the sensor can cause measurement errors.
• Alkali error: at pH values above pH12, alkali ions (Li+, Na+) can cause lower pH values to be displayed, as the
alkaliions are detected in addition to the H+ ions.
• Flow can inuence the measured value.
5.2.2 Temperature Compensation
Temperature compensation is performed automatically by the integrated temperature sensor (Pt1000).

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6 Malfunction and Maintenance
6.1 Cleaning and Upkeep
The sensor requires only minimal maintenance. In applications which cause heavy soiling of the sensor, the sensor should be
serviced more often.
• The sensor should always be kept clean. If there is a biolm on the sensors, this can lead to measurement
errors.
• A dirty sensor should be cleaned with buer solution.
• If possible, mechanical inuences on the glass membrane should be avoided.
• For stubborn soiling, a very soft brush or a soft sponge can be used carefully.
• For more solid deposits, the sensor can be immersed in a diluted HCl solution or a base. Pepsin can also be used in
the case of organic deposits.
If the sensor is taken out of operation, it should be cleaned before being stored. The protective cap must be lled with
a 3-molar KCl solution.
6.2 Maintenance and Inspection
The average lifetime of a TpH sensor is about 1 year. If diculties occur during calibration, the sensor probably has to be
replaced.
Do not disassemble the sensor for cleaning and maintenance.
Avoid touching the sensors, as they could be damaged. If this is the case, the functionality of the
sensor can no longer be guaranteed.
After cleaning, always rinse the sensor and the sensor system carefully with distilled water.
NOTICE
NOTICE
NOTICE
6.2.1 Temperature calibration
Since the pH value is temperature-dependent, it is recommended to check the temperature with a reference thermometer
before the rst pH calibration. If the temperature measured by the sensor deviates more than 1°C from the one measured by
the reference thermometer, a calibration of the temperature oset is necessary.
1. If you need calibrate the temperature sensor, set the controller to Maintenance mode:“Options”“Service mode”
2. Select the TpH sensor under “Sensor” and the corresponding port (COM port).
3. Press the“Calibrate”button and select the temperature.
4. The following calibration wizard will guide you through the next steps:
• Enter the measured temperature (reference thermometer) as the setpoint and press“Next”
• Then initiate a measurement by pressing“Measurement”
• Wait until“Continue” is active and then press it.
5. At the end you will be asked if you want to save the calibration. By pressing“Next”, the new calibration is saved in
the sensor; “Cancel” restores the previous calibration.

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6.3 Returns
Please observe the following instructions when returning items.
If returning a sensor, please contact customer service rst. To ensure a smooth return and to avoid incorrect deliveries, each
return package must rst be reported to the customer service. You will then receive a numbered RMA form, which you need
to ll out completely, check and send back to us. Please attach the form with the number so it is clearly visible on the outside
of the return package or write it in large numbers on the packaging. This is the only way your return package can be correctly
allocated and accepted.
Please make sure that the sensor is cleaned and disinfected before shipping. In order to ship the goods undamaged, use the
original packaging. If this is not on hand, make sure that safe transport is guaranteed and the sensor is safely packed using
enough packing material.
Caution! Return shipments without an RMA number can not be accepted and processed!
6.2.2 Replacing the sensor at TriBox3
1. If you need to replace your sensor, set the controller to Maintenance mode:“Options” „Service mode”
2. Remove the sensor from the FlowCell / tube system. At this point you should also check whether the O-rings are
still perfect. Replace the O-rings if necessary.
3. Commissioning the new sensor:
Connect the new sensor to the TriBox3. Press “Sensor Scan”. After a short time, the TriBox3 should have recog-
nized the new sensor.
Display:
“Display” select the display click on the window(s) for TpH “Current value” select the value to be dis-
played.
Automatic measurements:
In the„Sensor“ menu, click on the TpH sensor (blue button).
Select “Automatic measurement” “Automatic measurement” or “Burst mode”(as required).
For setting the automatic measurements (if not burst mode), select „Options“ „Automatic measurements“ 
„Raster“ Set the selection of the measuring interval as required.
Set Modbus Address:
“Sensor” menu click on the TpH sensor button “Modbus server settings” “Slave address” change the
address.
Set Analog output:
“Options” “Analog outputs” select the previous analog output where the old sensor was set “Measure-
ment value used” select the new sensor from the drop down list set scaling information.
Post-processing:
If you want to keep previous post-processing settings, you can set them with “Sensor” “pH” here you can
congure the sensor settings as required.
If you need to replace the sensor, the controller settings for the new sensor need to be congured
again.
NOTICE

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7 Technical Data
7.1 Technical specications
Measurement technology pH electrode
Measurement principle Potentiometry
Parameter pH value, temperature
measuring range pH 0...14 pH
Temperature 0...+65 °C
resolution pH 0.01 pH
Temperature 0.1 °C
precision pH ± 0,06 pH
Temperature ± 0.5 °C
Intrinsic error
pH1 ± 0.05 pH
pH7 ± 0.05 pH
pH13 ± 0.35 pH
Linearity measurement error ± 0.1 pH
Repeatability
pH1 ± 0.1 pH
pH7 ± 0.05 pH
pH13 ± 0.1 pH
Output signal uc-
tuation
pH7 ± 0.025 pH
pH4 ± 0.05 pH
Warm-up time < 5 min
Drift Short-term drift 24 h ≤ 0.03 pH
Long-term drift 1 week ≤ 0.05 pH
10% time and
90% time
T10 ascending < 2 s
T10 falling < 2 s
T90 ascending ≤ 5 s
T90 falling ≤ 5 s
Temperature compensation Pt1000
Measurement interval 2 s
Housing material PPS / PET / NBR
Dimensions (L x Ø) ~ 180 x 27 mm ~ 7.1˝ x 1.1˝
Weight 110 g ~ 0.2 lbs
Interface RS-485, Modbus RTU
Power consumption 0.2 W

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7.2 External Dimensions
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
Name: TpH
Date: 23.02.2018 Rev.: TP101711
Note: Dimensions in mm
Document: D10-068en201805
TriOS Mess- und Datentechnik GmbH ●Bgm.-Brötje-Str. 25 ●26180 Rastede ●Germany
fon: +49 4402 / 69 67 0 - 0 ●fax: - 20 ●web: http://www.trios.de ●e-mail: [e-mail]
Dimension Drawing: TpH
Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind verboten,
soweit nicht ausdrücklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte vorbehalten.
The reproduction, distribution and utilization of this document as well as the communication of its contents to others
without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved.
Page 1 of 1
Note: iProperty -> Übersicht -> Kommentar
Preliminary: iProperty -> Status -> Status
Titel: iProperty -> Übersicht -> Titel

23
~

27
~
138~ 36,5~
AF = across flats
178~
Position Material
sensor body Polyethylene Terephthalate (PET)
Polyphenylene Sulfide (PPS)
sealings Nitrile Butadiene Rubber (NBR)
pH Stem pH Sensing Glass
Power supply 12...24 VDC (± 10 %)
Connection 8-pin M12 plug
Sensor cable 2 m and 10 m
Required supervision Typically ≤ 0.5 h/month
Calibration / maintenance interval Typically 4 weeks
System compatibility Modbus RTU
Warranty
1 year (EU: 2 years) on electronics; wearing parts are excluded
from the warranty
Max. pressure with xed cable 3 bar ~ 43.5 psig
in ow cell 1 bar, 2...4 L/min ~ 14.5 psig, 0.5 to 1 gpm
Protection type IP68 NEMA 6P
Sample temperature +2...+40 °C ~ +36 °F to +104 °F
Ambient temperature -5...+55 °C ~ +23 °F to +131 °F
Storage temperature 0...+80 °C ~ +32 °F to +176 °F
Inow velocity 0...3 m/second ~ 0...10 fps

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8 Accessories
8.1 TriBox 3
Digital 4-channel display and control unit
with integrated solenoid valve for pneumatic con-
trol
TriBox3 is a measurement and control system for all TriOS sensors.
The device provides 4 sensor channels with selectable RS-232
or RS-485 function. In addition to the Modbus RTU, various
other protocols are available. A built-in valve allows the use of
compressed-air cleaning for the sensors The TriBox3 also oers
TCP/IP and WLAN networks, USB connection and 6 analog
outputs (4...20 mA). An integrated relay can be used to trigger
alarms or to control external devices. Features such as low po-
wer consumption, a robust aluminium housing and a range of
interfaces make it suitable for all applications that have to do
with environmental monitoring, drinking water, wastewater tre-
atment plants and many other areas.
Firmware version 1.4.11 or higher.
8.2 TriBox Mini
Digital 2-channel controller
Mini controller with two digital and serial sensor channels
and two 4...20mA outputs. All measurement data and diag-
nostic data can be read out via a built-in web browser.
Firmware version 1.2.0 or higher.