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Handbook
Handbook
SMARTPAT PH 8530
SMARTPAT PH 8530
SMARTPAT PH 8530SMARTPAT PH 8530
Digital pH sensor for the power, semiconductor and
water industries
HandbookHandbook
© KROHNE 03/2016 - 4002544803 - MA SMARTPAT PH 8530 R03 en
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S
:
IMPRINT
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All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
Subject to change without notice.
Copyright 2016 by
KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany)
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SMARTPAT PH 8530
CONTENTS
1 Safety instructions 5
1.1 Software History ............................................................................................................... 5
1.2 Intended use ..................................................................................................................... 6
1.3 Certifications .................................................................................................................... 6
1.4 Safety instructions from the manufacturer ..................................................................... 7
1.4.1 Copyright and data protection ................................................................................................ 7
1.4.2 Disclaimer ............................................................................................................................... 7
1.4.3 Product liability and warranty ................................................................................................ 8
1.4.4 Information concerning the documentation........................................................................... 8
1.4.5 Warnings and symbols used................................................................................................... 9
1.5 Safety instructions for the operator................................................................................. 9
2 Device description 10
2.1 Scope of delivery............................................................................................................. 10
2.2 Device description .......................................................................................................... 11
2.3 Nameplate ...................................................................................................................... 12
3 Installation 13
3.1 General notes on installation ......................................................................................... 13
3.2 Storage and transport .................................................................................................... 14
3.3 Pre-installation requirements ....................................................................................... 14
3.4 Installation procedure .................................................................................................... 15
4 Electrical connections 16
4.1 Safety instructions.......................................................................................................... 16
4.2 Power supply .................................................................................................................. 16
4.3 Grounding and equipotential bonding............................................................................ 17
4.4 Connecting the cable to the sensor ............................................................................... 17
4.5 Connecting the sensor cable.......................................................................................... 18
4.6 Connection diagram ....................................................................................................... 18
4.7 Installing the sensor....................................................................................................... 20
4.7.1 General installation instructions.......................................................................................... 20
4.7.2 General installation instructions.......................................................................................... 21
4.7.3 Installation steps................................................................................................................... 22
5 Operation 23
5.1 Calibration ...................................................................................................................... 23
5.1.1 Calibration with PACTwareTM............................................................................................... 23
5.1.2 Calibration with HART
®
Handheld 475 FIELD COMMUNICATOR ........................................ 25
5.2 Troubleshooting.............................................................................................................. 28
5.3 Status messages and diagnostic information................................................................ 29
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CONTENTS
SMARTPAT PH 8530
6 Service 30
6.1 Maintenance ................................................................................................................... 30
6.1.1 Cleaning ................................................................................................................................ 30
6.1.2 Aging and re-calibration ....................................................................................................... 30
6.2 Availability of services .................................................................................................... 31
6.3 Returning the device to the manufacturer..................................................................... 32
6.3.1 General information.............................................................................................................. 32
6.3.2 Form (for copying) to accompany a returned device............................................................ 33
6.4 Disposal .......................................................................................................................... 33
7 Technical data 34
7.1 Measuring principle........................................................................................................34
7.1.1 pH measurement .................................................................................................................. 34
7.2 Technical data................................................................................................................. 36
7.3 Dimensions ..................................................................................................................... 38
8 Description of HART interface 39
8.1 General description ........................................................................................................39
8.2 Software history ............................................................................................................. 39
8.3 Connection variants........................................................................................................40
8.3.1 Point-to-Point connection - analogue / digital mode........................................................... 41
8.4 Inputs/outputs and HART® dynamic variables and device variables............................ 42
8.5 Field Communicator 475 (FC 475).................................................................................. 42
8.5.1 Installation ............................................................................................................................ 42
8.6 Field Device Tool / Device Type Manager (FDT/DTM).................................................... 43
8.6.1 Installation ............................................................................................................................ 43
8.7 Overview Basic-DD menu tree (positions in menu tree) ............................................... 43
8.8 Basic-DD menu tree (details for settings) ..................................................................... 44
9 Appendix 47
9.1 pH as a function of mV.................................................................................................... 47
9.2 pH temperature dependency.......................................................................................... 48
10 Notes 49
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SMARTPAT PH 8530
1.1 Software History
The "Electronic Revision" (ER) is consulted to document the revision status of electronic
equipment according to NE 53 for all GDC devices. It is easy to see from the ER whether
troubleshooting or larger changes in the electronic equipment have taken place and how that
has affected the compatibility.
Changes and effect on compatibility
1 Downwards compatible changes and fault repair with no effect on operation (e.g. spelling
mistakes on display)
2-_ Downwards compatible hardware and/or software change of interfaces:
H
HART
P PROFIBUS
F Foundation Fieldbus
M Modbus
X all interfaces
3-_ Downwards compatible hardware and/or software change of inputs and outputs:
I Current output
F, P Frequency / pulse output
S Status output
C control input
CI Current input
X all inputs and outputs
4 Downwards compatible changes with new functions
5 Incompatible changes, i.e. electronic equipment must be changed.
SAFETY INSTRUCTIONS
®
1
INFORMATION!
In the table below, "x" is a placeholder for possible multi-digit alphanumeric combinations,
depending on the available version.
Release date SW/HW version Changes and
Documentation
compatibility
2015-12-01 SW 1.0.x
HW 1.0.x
- MA SMARTPAT pH 8530 R03
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SAFETY INSTRUCTIONS
1.2 Intended use
CAUTION!
Responsibility for the use of the measuring devices with regard to suitability, intended use and
corrosion resistance of the used materials against the measured fluid lies solely with the
operator.
INFORMATION!
The manufacturer is not liable for any damage resulting from improper use or use for other than
the intended purpose.
The intended use of the sensor SMARTPAT PH 8530 is the measurement of pH value in liquids.
1.3 Certifications
CE marking
SMARTPAT PH 8530
The device fulfils the statutory requirements of the following EC directives:
• EMC Directive 2004/108/EC (valid until 2016/04/19) or
EMC Directive 2014/30/EU (valid from 2016/04/20)
as well as
• NAMUR recommendation NE 21
The manufacturer certifies successful testing of the product by applying the CE marking.
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SMARTPAT PH 8530
1.4 Safety instructions from the manufacturer
1.4.1 Copyright and data protection
The contents of this document have been created with great care. Nevertheless, we provide no
guarantee that the contents are correct, complete or up-to-date.
The contents and works in this document are subject to copyright. Contributions from third
parties are identified as such. Reproduction, processing, dissemination and any type of use
beyond what is permitted under copyright requires written authorisation from the respective
author and/or the manufacturer.
The manufacturer tries always to observe the copyrights of others, and to draw on works created
in-house or works in the public domain.
The collection of personal data (such as names, street addresses or e-mail addresses) in the
manufacturer's documents is always on a voluntary basis whenever possible. Whenever
feasible, it is always possible to make use of the offerings and services without providing any
personal data.
SAFETY INSTRUCTIONS
1
We draw your attention to the fact that data transmission over the Internet (e.g. when
communicating by e-mail) may involve gaps in security. It is not possible to protect such data
completely against access by third parties.
We hereby expressly prohibit the use of the contact data published as part of our duty to publish
an imprint for the purpose of sending us any advertising or informational materials that we have
not expressly requested.
1.4.2 Disclaimer
The manufacturer will not be liable for any damage of any kind by using its product, including,
but not limited to direct, indirect or incidental and consequential damages.
This disclaimer does not apply in case the manufacturer has acted on purpose or with gross
negligence. In the event any applicable law does not allow such limitations on implied warranties
or the exclusion of limitation of certain damages, you may, if such law applies to you, not be
subject to some or all of the above disclaimer, exclusions or limitations.
Any product purchased from the manufacturer is warranted in accordance with the relevant
product documentation and our Terms and Conditions of Sale.
The manufacturer reserves the right to alter the content of its documents, including this
disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable
in any way for possible consequences of such changes.
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SAFETY INSTRUCTIONS
1.4.3 Product liability and warranty
The operator shall bear responsibility for the suitability of the device for the specific purpose.
The manufacturer accepts no liability for the consequences of misuse by the operator. Improper
installation or operation of the devices (systems) will cause the warranty to be void. The
respective "Standard Terms and Conditions" which form the basis for the sales contract shall
also apply.
1.4.4 Information concerning the documentation
To prevent any injury to the user or damage to the device it is essential that you read the
information in this document and observe applicable national standards, safety requirements
and accident prevention regulations.
If this document is not in your native language and if you have any problems understanding the
text, we advise you to contact your local office for assistance. The manufacturer can not accept
responsibility for any damage or injury caused by misunderstanding of the information in this
document.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device. Special considerations and precautions are also described in the
document, which appear in the form of icons as shown below.
SMARTPAT PH 8530
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SMARTPAT PH 8530
1.4.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
DANGER!
This warning refers to the immediate danger when working with electricity.
DANGER!
This warning refers to the immediate danger of burns caused by heat or hot surfaces.
DANGER!
This warning refers to the immediate danger when using this device in a hazardous atmosphere.
DANGER!
These warnings must be observed without fail. Even partial disregard of this warning can lead to
serious health problems and even death. There is also the risk of seriously damaging the device
or parts of the operator's plant.
SAFETY INSTRUCTIONS
1
WARNING!
Disregarding this safety warning, even if only in part, poses the risk of serious health problems.
There is also the risk of damaging the device or parts of the operator's plant.
CAUTION!
Disregarding these instructions can result in damage to the device or to parts of the operator's
plant.
INFORMATION!
These instructions contain important information for the handling of the device.
LEGAL NOTICE!
This note contains information on statutory directives and standards.
• HANDLING
HANDLING
HANDLINGHANDLING
This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.
i RESULT
RESULT
RESULTRESULT
This symbol refers to all important consequences of the previous actions.
1.5 Safety instructions for the operator
WARNING!
In general, devices from the manufacturer may only be installed, commissioned, operated and
maintained by properly trained and authorized personnel.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device.
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DEVICE DESCRIPTION
2.1 Scope of delivery
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
SMARTPAT PH 8530
Figure 2-1: Standard scope of delivery
1 Ordered sensor
2 Documentation
Optional accessories
• SENSOFIT FLOW 1000 series - Flow-through assemblies
• SENSOFIT IMM 1000 / 2000 series - Immersion assemblies
• SENSOFIT INS 1000 / 7000 series - Insertion assemblies
• SENSOFIT RET / RAM 5000 series - Manual and pneumatic retractable assemblies
• Cable VP2-S (cable with shield in various lengths)
• SMARTMAC 200 W - Wall mount display with calibration and configuration function
• SD 200 W/R - Wall or rack mount indicator
• OPTIBRIDGE / SMARTBRIDGE – USB interface cable
• SJB 200 W-Ex – Junction box
Consumables/Spare parts available
• Various pH buffer solutions for sensor calibration
• Various cleaning solutions
INFORMATION!
For further information contact your local sales office.
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SMARTPAT PH 8530
2.2 Device description
Figure 2-2: Construction of the pH sensor
1 VP2 connector
2 Nickel plated brass body
3 Process connection: PG 13.5 thread
4 Washer
5 O-ring
6 Glass shaft
7 Diaphragm
8 Membrane glass
DEVICE DESCRIPTION
2
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DEVICE DESCRIPTION
2.3 Nameplate
Figure 2-3: Example for a nameplate on the sensor body
1 Manufacturer
2 Address
3 Device name
TAG number
4 Order code
Serial number
5 Manufacturing date / Ingress protection
6 Electronic/electric device waste marking;
Observe the operation and installation instruction / Approvals
SMARTPAT PH 8530
12
Figure 2-4: Example for a nameplate on the glass shaft
1 Manufacturer
2 Device name
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
The sensor type is specified on the label of the sensor package and on the sensor itself.
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SMARTPAT PH 8530
3.1 General notes on installation
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
DANGER!
Observe the national regulations for electrical installations!
WARNING!
During installation of the device make sure that you use ESD (electrostatic discharge) protection
equipment.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
INSTALLATION
3
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
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INSTALLATION
3.2 Storage and transport
CAUTION!
Do not store the sensor tip dry. This will shorten lifetime considerably.
Always store the pH sensor tip wet in a 3 molar KCl solution when not in use. Saltless water
must be avoided since this would leak the KCl ions. The original packing in which the sensor tip
was delivered contains a plastic tube with KCl solution and therefore is suitable for storage and
transport.
• Since the pH sensor is made out of glass it is very fragile. Avoid shocks of any kind.
• Do not touch or scratch the membrane glass.
• Store and transport the device in a dry, dust-free environment.
• Store and transport the device in an environment with a temperature between 4...+30°C /
40...+86°F.
• The original packing is designed to protect the equipment. It has to be used if the device is
transported or sent back to the manufacturer including the sensor transportation packing, to
prevent damage of the sensor.
SMARTPAT PH 8530
3.3 Pre-installation requirements
CAUTION!
•
Do not drop the device! Handle the device with care!
•
Never touch or scratch the pH membrane glass of the sensor.
•
Store the sensor in its original packaging in a dry, dust-free location. Keep it away from dirt. If
necessary, clean it. See cleaning procedure on page 30
Do not make any mechanical modifications to the sensor (electrodes shortened, drilled, bent
•
or scratched). This can result in the loss of proper functionality, as well as the rights under
the device warranty.
•
The sensor must be suitable for the temperature, pressure and medium conditions which are
specified (including chemical resistance).
INFORMATION!
A sensor specific DTM software for usage with PACTware
is free of charge and available from CD (scope of delivery) or can be downloaded from the
KROHNE website (Downloadcenter).
.
TM
FDT is available. The DTM software
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SMARTPAT PH 8530
Figure 3-1: Unpacking the sensor
Unpacking the sensor
• Remove by gently twisting and pulling the protective cap from the sensor 1.
• Lay the sensor on a soft ESD mat or soft paper tissue 2.
• Leave the protection cap on the VP connector, as long as the sensor is not connected to the
cable.
INSTALLATION
3
3.4 Installation procedure
WARNING!
During installation of the device make sure that you use ESD (electrostatic discharge) protection
equipment.
Because a new pH sensor needs to be calibrated before it is installed into its final measuring
location, it is important to follow the installation order:
1 Connect the sensor to the junction box or directly to the process control system.
2 Calibrate the sensor.
3 Install the sensor into its final measuring location.
The required steps are explained in the following sections.
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4
ELECTRICAL CONNECTIONS
4.1 Safety instructions
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
DANGER!
Observe the national regulations for electrical installations!
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
SMARTPAT PH 8530
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
4.2 Power supply
CAUTION!
Do not use the integrate 250 Ohm HART
Ex isolation amplifiers of third-party with integrated 250 Ohm HART
The sensor requires a minimum operating voltage of 15 VDC. The power supply is provided via
the 2-wire interface (4...20 mA).
During initialisation of the sensor following values appear in the display mode of the "Measuring
value":
Conductivity NaN
Resistance NaN
Temperature NaN
Loop current NaN
®
resistor of the SMARTMAC 200 W, when using an
®
resistor.
16
The specification NaN (Not a Number) disappears after a few seconds once the initialisation of
the sensor is completed. Afterwards, the measured values appear.
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SMARTPAT PH 8530
4.3 Grounding and equipotential bonding
Sensor type SMARTPAT pH must be grounded (hard grounding or capacitive connection to
ground).
SJB 200 W-Ex junction box offers the grounding possibility.
For further information refer to the SJB 200 W-Ex manual.
For connection of SMARTPAT sensor use only a VarioPin cable with shield wire, like the
cable VP2-S.
4.4 Connecting the cable to the sensor
WARNING!
During installation of the device make sure that you use ESD (electrostatic discharge) protection
equipment.
CAUTION!
Moisture on the sensor connector must be avoided! Moisture may cause a short-circuit and a
malfuntion of the sensor!
If moisture has entered the connector dry it with air (e.g. hot air gun).
ELECTRICAL CONNECTIONS
4
Figure 4-1: Connecting the cable to the sensor
Connecting the cable to the sensor
• Ensure that both cable and sensor connector are absolutely dry 1.
• Screw the cable connector 2 on the sensor connector and tighten it by hand.
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ELECTRICAL CONNECTIONS
4.5 Connecting the sensor cable
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
INFORMATION!
The cable glands installed by the manufacturer are designed for a cable diameter of 8 mm...13 mm /
0,31"...0,51". If you are using cables with a larger diameter, you must replace the manufacturer's cable
glands with suitable ones. The operator is responsible for the correct sealing of cable glands.
Cable VP2-S
Transparent-black (inner coax shield) Ub+
White Ub-
Shield S
4.6 Connection diagram
SMARTPAT PH 8530
Connection to SJB 200 W-Ex
Figure 4-2: Example of a connection with a SJB 200 W-Ex junction box
1 SJB 200 W-Ex junction box with or without internal resistor used
2 Sensor with VP2-S cable
3 Display or other 4...20 mA loop powered device (e.g. data logger)
4 Control system without internal 250 Ω resistor connected to internal resistor of SJB 200 W-Ex
5 Control system with internal 250 Ω resistor connected to SJB 200 W-Ex without using internal resistor
SJB 200 W-Ex
with internal resistor
SJB 200 W-Ex
without internal resistor
18
S Shield S Shield
A Sensor + A Sensor +
B Sensor - B Sensor -
C Display + F Loop - w/o Display
D Display - H Loop +
E Loop - w/ Display
G Loop + [250Ω]
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SMARTPAT PH 8530
HART® interface within SJB 200 W
Figure 4-3: Example of a HART® handheld connection
1 Connection via crocodile clips
2 Only for Ex:
Only for Ex: M12 connector for the HART
Only for Ex:Only for Ex:
Connection of SMARTMAC 200 W with loop powered device via optional SJB 200 W-Ex
junction box to a SMARPAT Sensor.
-HART+
ELECTRICAL CONNECTIONS
®
handheld connecting cable
4
Figure 4-4: Example of connecting the SMARTMAC 200 W to a control system without internal 250 Ω resistor and one
additional loop powered device.
1 SMARTMAC 200 W
2 Sensor with VP2-S cable
3 Cable connection between SJB 200 W-Ex and SMARTMAC 200 W
4 Display or other 4...20 mA loop powered device (e.g. data logger)
5 Control system without internal 250 Ω resistor
6 SJB 200 W-Ex junction box
SMARTMAC 200 W
with internal resistor
S Shield A Sensor +
A Sensor + B Sensor -
B Sensor - C Display +
F Loop - D Display-
G Loop + [250Ω] E Loop - w/ Display
SJB 200 W-Ex
without internal resistor
H Loop +
INFORMATION!
®
The SJB 200 W offers the opportunity to access the sensor via HART
hand held. For further
information refer to the manual of the SJB 200 W.
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ELECTRICAL CONNECTIONS
Connection with sensor and control system
Figure 4-5: SMARTMAC 200 W connection to a control system with internal 250 Ω resistor (left side). SMARTMAC 200 W
connection to a control system without internal 250 Ω resistor (right side).
1 SMARTMAC 200 W
2 Sensor with VP2-S cable
3 Control system with internal 250 Ω resistor
4 Control system without internal 250 Ω resistor
SMARTPAT PH 8530
SMARTMAC 200 W
without internal resistor
S Shield S Shield
A Sensor + A Sensor +
B Sensor - B Sensor -
F Loop - F Loop -
H Loop + G Loop + [250Ω]
4.7 Installing the sensor
4.7.1 General installation instructions
WARNING!
Ensure that the pipeline is without pressure before installing or removing a sensor!
INFORMATION!
During installation you should fix a shut-off valve in front of and behind the instrument so that
the sensor can be taken out in case of check.
INFORMATION!
To achieve reliable measuring results, the electrodes must always have full contact with the
measuring medium.
SMARTMAC 200 W
with internal resistor
20
INFORMATION!
Basically any installation position is possible. However, ensure that sufficient medium flows
through and around the electrodes (the conductive electrodes must always be completely
surrounded by the medium). Structural measures must be taken to prevent flow interruption or
gas bubbles.
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SMARTPAT PH 8530
4.7.2 General installation instructions
The sensor tip must always have full contact with the measuring medium.
The mounting position of the sensor should not deviate more than 75° from vertical position
(sensor tip pointing downwards). Doing otherwise might cause internal air bubbles to float into
the sensor tip. This would interrupt the electrical contact between the inner buffer solution and
the glas surface.
ELECTRICAL CONNECTIONS
4
Figure 4-6: Installation requirements
1 Measuring medium
2 Maximum deviation of 75° from vertical position
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ELECTRICAL CONNECTIONS
4.7.3 Installation steps
• Ensure that the washer and the O-ring is properly fitted, clean and undamaged.
• Ensure that the raised face of the receiving part has a smooth surface
• Screw the device into the thread by hand.
Hand tight connection is sufficient.
For this device the max. torque that can be used is 7 Nm.
SMARTPAT PH 8530
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SMARTPAT PH 8530
5.1 Calibration
OPERATION
5
5.1.1 Calibration with PACTware
Manual hold
• Start the function calibration
• Activate the function manual hold
• Select yes
• Press Next
yes.
yesyes
Next to proceed.
NextNext
Temperature compensation
• Set the temperature compensation
• Select between automatic
temperature compensation for calibration.
temperature compensationtemperature compensation
i If you have selected manual temperature compensation
the pH buffer solution. Default setting: 25°C / 77°F.
• Press Next
Next to proceed.
NextNext
Start calibration procedure
• Dip the sensor into the first pH buffer solution 1 and wait till the value is stable.
• Press Next
Next to proceed.
NextNext
i The measurement of pH buffer solution 1
After approx. 10 seconds the following values appear:
pH value
temperature value
identified buffer value
calibration in menu mode Quick Setup
calibrationcalibration
manual hold to avoid an alarm.
manual holdmanual hold
automatic or manual
automaticautomatic
TM
Quick Setup or Setup
Quick SetupQuick Setup
manual.
manualmanual
manual temperature compensation, please enter the temperature of
manual temperature compensationmanual temperature compensation
pH buffer solution 1 starts and the values pH and temperature appear.
pH buffer solution 1pH buffer solution 1
Setup.
SetupSetup
• Press Next
• Press Next
Next to confirm the identified pH buffer solution. If necessary change the value of the pH
NextNext
buffer solution manually. If the sensor does not recognise the pH buffer solution the message
buffer not recognised
buffer not recognised appears.
buffer not recognisedbuffer not recognised
Next to proceed.
NextNext
i The value 0 for the pH buffer solution appears. Enter the value of the pH buffer solution
manually.
• Press Next
• Clean the sensor with demineralised water 2.
Next to proceed with the calibration procedure.
NextNext
Figure 5-1: Calibration procedure
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OPERATION
• Dip the sensor into the second pH buffer solution 3 and wait till the value is stable.
• Press Next
i The measurement of pH buffer solution 2
Next to proceed.
NextNext
pH buffer solution 2 starts and the values pH and temperature appear.
pH buffer solution 2pH buffer solution 2
After approx. 10 seconds the following values appear:
pH value
temperature value
identified buffer value
SMARTPAT PH 8530
• Press Next
• Press Next
Next to confirm the identified pH buffer solution. If necessary change the value of the pH
NextNext
buffer solution manually.
If the sensor does not recognise the pH buffer solution the message buffer not recognised
appears.
Next to proceed.
NextNext
buffer not recognised
buffer not recognisedbuffer not recognised
i The value 0 for the pH buffer solution appears. Enter the value of the pH buffer solution
manually.
• Press Next
• Clean the sensor with demineralised water 2.
Next to proceed with the calibration procedure.
NextNext
i After a successful calibration the following values appear:
Buffer solution 1
Buffer solution 2
Offset in mV
Slope in mV/pH
• Press Next
• Set the calibration date with DD-MM-YYYY and calibration time with HH-MM-SS.
• Press Next
i The message Save values?
• Select yes
• Press Next
• Select no
• Press Next
Next to proceed.
NextNext
Next to proceed.
NextNext
Save values? appears.
Save values?Save values?
yes to save the values.
yesyes
Next to proceed.
NextNext
no to deactivate the function manual hold
nono
Next to leave the calibration menu.
NextNext
manual hold.
manual holdmanual hold
A pH calibration is necessary in regular intervals or when installing a new pH sensor.
If the calibration was not successful, the message Warning! Offset out of range!
the value Offset
In case the value of the slope is not plausible, additionally the message No saving possible
appears.
• Press Next
i The messages Warning! Offset out of range!
• Press Next
• Set the calibration date with DD-MM-YYYY and calibration time with HH-MM-SS.
• Press Next
i The message Save values?
• Select between yes
• Press Next
• Select no
• Press Next
If the message Warning! Slope out of range!
possible
possible, no data can be saved.
possiblepossible
Offset and/or the message Warning! Slope out of range!
OffsetOffset
Next to proceed.
NextNext
Warning! Offset out of range! or Warning! Slope out of range!
Warning! Offset out of range!Warning! Offset out of range!
Next to proceed.
NextNext
Next to proceed.
NextNext
Save values? appears.
Save values?Save values?
yes or no
no.
yesyes
nono
Next to proceed.
NextNext
no to deactivate the function manual hold
nono
Next to leave the calibration menu.
NextNext
Warning! Slope out of range! appears together with the message No saving
Warning! Slope out of range!Warning! Slope out of range!
Warning! Slope out of range! behind the value Slope
Warning! Slope out of range!Warning! Slope out of range!
manual hold.
manual holdmanual hold
Warning! Offset out of range! appears behind
Warning! Offset out of range!Warning! Offset out of range!
Slope.
SlopeSlope
No saving possible
No saving possibleNo saving possible
Warning! Slope out of range! appear.
Warning! Slope out of range!Warning! Slope out of range!
No saving
No saving No saving
24
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SMARTPAT PH 8530
OPERATION
5
• Press Next
• Select no
• Press Next
In a fully functional sensor, the optimal slope is -59 mV for each pH unit and the optimal zero
point is 0 mV at pH 7. The slope should at least have a value between -50...-65 mV per pH unit.
Re-calibrate the sensor if the slope does not approximate those limits. The pH sensor ages, the
slope gets flatter and the zero error increases.
Next to proceed.
NextNext
no to deactivate the function manual hold
nono
Next to leave the calibration menu.
NextNext
manual hold.
manual holdmanual hold
CAUTION!
•
Never touch or scratch the pH sensitive glass tip of the sensor.
•
Make sure that the sensor tip is clean and dust-free. If necessary, clean the tip as described
on page 30
.
CAUTION!
Moisture on the sensor connector must be avoided! Moisture may cause a short-circuit and a
malfuntion of the sensor!
If moisture has entered the connector dry it with air (e.g. hot air gun).
5.1.2 Calibration with HART® Handheld 475 FIELD COMMUNICATOR
Manual hold
• Start the function calibration
• Activate the function manual hold
• Select Yes
• Press Enter
Yes.
YesYes
Enter to proceed.
EnterEnter
calibration in menu mode Quick Setup
calibrationcalibration
manual hold to avoid an alarm.
manual holdmanual hold
Quick Setup or Setup
Quick SetupQuick Setup
Setup.
SetupSetup
Temperature compensation
• Set the temperature compensation
• Select between automatic
i If you have selected manual temperature compensation
• Press Enter
temperature compensation for calibration.
temperature compensationtemperature compensation
automatic or manual
automaticautomatic
the pH buffer solution. Default setting: 25°C / 77°F.
Enter to proceed.
EnterEnter
manual.
manualmanual
manual temperature compensation, please enter the temperature of
manual temperature compensationmanual temperature compensation
Start calibration procedure
• Dip the sensor into the first pH buffer solution 1 and wait till the value is stable.
• Press Ok
i The measurement of pH buffer solution 1
• Press Ok
• Press Enter
Ok to proceed.
OkOk
pH buffer solution 1 starts and the values pH and temperature appear.
pH buffer solution 1pH buffer solution 1
After approx. 10 seconds the following values appear:
pH value
temperature value
Status buffer detection → Finished
identified buffer value
Ok to confirm the identified pH buffer solution. If necessary change the value of the pH
OkOk
buffer solution manually.
Enter to proceed.
EnterEnter
i If the sensor does not recognise the pH buffer solution the messages
Identified buffer
Identified buffer → 0 pH
Identified buffer Identified buffer
• Press Ok
Ok to proceed.
OkOk
0 pH and Buffer not recognised
0 pH 0 pH
Buffer not recognised appear.
Buffer not recognisedBuffer not recognised
i Enter the value of the pH buffer solution manually.
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5
OPERATION
SMARTPAT PH 8530
• Press Enter
• Clean the sensor with demineralised water 2.
Figure 5-2: Calibration procedure
• Dip the sensor into the second pH buffer solution 3 and wait till the value is stable.
• Press Ok
i The measurement of pH buffer solution 2
Enter to proceed with the calibration procedure.
EnterEnter
Ok to proceed.
OkOk
pH buffer solution 2 starts and the values pH and temperature appear.
pH buffer solution 2pH buffer solution 2
After approx. 10 seconds the following values appear:
pH value
temperature value
Status buffer detection → Finished
identified buffer value
• Press Ok
• Press Enter
Ok to confirm the identified pH buffer solution. If necessary change the value of the pH
OkOk
buffer solution manually.
Enter to proceed.
EnterEnter
i If the sensor does not recognise the pH buffer solution the messages
Identified buffer
Identified buffer → 0 pH
Identified buffer Identified buffer
• Press Ok
Ok to proceed.
OkOk
0 pH and Buffer not recognised
0 pH 0 pH
Buffer not recognised appear.
Buffer not recognisedBuffer not recognised
i Enter the value of the pH buffer solution manually.
• Press Enter
• Clean the sensor with demineralised water 2.
Enter to proceed with the calibration procedure.
EnterEnter
i After a successful calibration the following values appear:
Buffer solution 1
Buffer solution 2
Offset in mV
Slope in mV/pH
• Press Ok
• Set the calibration date with MM-DD-YYYY. Press the key > to enter the submenu. Now you can
• Press Enter
i The message save values?
• Select yes
• Press Enter
Ok to proceed.
OkOk
change the calibration date.
Enter and Ok
EnterEnter
yes to save the values.
yesyes
Enter to proceed.
EnterEnter
Ok to proceed.
OkOk
save values? appears.
save values?save values?
26
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SMARTPAT PH 8530
OPERATION
5
• Select no
• Press Enter
A pH calibration is necessary in regular intervals or when installing a new pH sensor.
If the calibration was not successful, the message Warning!
and/or Slope
• Press Ok
• Set the calibration date with MM-DD-YYYY. Press the key > to enter the submenu. Now you can
• Press Enter
i The messages Warning! Offset out of range!
• Select between yes
• Press Enter
• Select No
• Press Enter
If the message ATTENTION! Slope out of range!
• Press Ok
• The message No saving possible
• Press Ok
• Select no
• Press Next
no to deactivate the function manual hold
nono
Enter to leave the calibration menu.
EnterEnter
Slope.
SlopeSlope
Ok to proceed.
OkOk
change the calibration date.
Enter and Ok
EnterEnter
values?
values? appear.
values?values?
Enter to proceed.
EnterEnter
No to deactivate the function manual hold
NoNo
Enter to leave the calibration menu.
EnterEnter
Ok to proceed.
OkOk
Ok to proceed.
OkOk
no to deactivate the function manual hold
nono
Next to leave the calibration menu.
NextNext
Ok to proceed.
OkOk
Warning! Offset out of range! and/or Warning! Slope out of range!
Warning! Offset out of range!Warning! Offset out of range!
yes or no
no.
yesyes
nono
ATTENTION! Slope out of range! appears, no data can be saved.
ATTENTION! Slope out of range!ATTENTION! Slope out of range!
No saving possible appears.
No saving possibleNo saving possible
manual hold.
manual holdmanual hold
manual hold.
manual holdmanual hold
manual hold.
manual holdmanual hold
Warning! appears behind the values Offset
Warning!Warning!
Warning! Slope out of range! and Save
Warning! Slope out of range!Warning! Slope out of range!
Offset
OffsetOffset
Save
Save Save
In a fully functional sensor, the optimal slope is -59 mV for each pH unit and the optimal zero
point is 0 mV at pH 7. The slope should at least have a value between -50...-65 mV per pH unit.
Re-calibrate the sensor if the slope does not approximate those limits. The pH sensor ages, the
slope gets flatter and the zero error increases.
CAUTION!
•
Never touch or scratch the pH sensitive glass tip of the sensor.
•
Make sure that the sensor tip is clean and dust-free. If necessary, clean the tip as described
on page 30
.
CAUTION!
Moisture on the sensor connector must be avoided! Moisture may cause a short-circuit and a
malfuntion of the sensor!
If moisture has entered the connector dry it with air (e.g. hot air gun).
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5
OPERATION
5.2 Troubleshooting
Problem Possible cause Remedy
SMARTPAT PH 8530
The pH sensor
does not deliver a
signal.
The pH sensor
delivers an
unstable signal.
High pH value Air bubble in the sensor
The pH sensor
does not deliver a
®
or 4...20
HART
mA signal.
No pH
measurement.
No temperature
measurement
(only applicable via
®
DD or
HART
PACTware
FDT/DTM).
TM
Mechanical damage of the
glass, e.g. small cracks.
This will shortcut the ion
exchange and deliver a
pH 7 reading.
Open circuit Check the cable wiring of the sensor cable on the junction box.
The diaphragm in the
reference half cell does
not provide good contact
to the process medium
due to drying up or
coatings.
tip (no inner buffer
solution)
Open circuit or humidity
between the connections.
Broken lead, incorrect
electrical connection.
Electrodes are exposed to
air (not fully immersed).
Temperature sensor is
faulty.
Exchange sensor.
Otherwise connect the sensor to the primary master e.g.
PACTware
damage.
•
Clean the diaphragm with hot soap or acid using a soft tissue
(details on page 30).
•
Submerge sensor in water and increase the temperature to
+50...+60°C / +122...+140°F.
•
Submerge sensor in 3 molar KCl solution at ambient temperature.
The decrease in temperature will cause the reference half cell to
suck in KCl solution through the diaphragm and regenerate the
diaphragms functionality.
Protect the sensor tip with a protection cap as described on page 14.
Hold the sensor into a vertical position and help by rapid movements
of the wrist to shake the liquid down. Remove the protection cap and
check if there is still an air bubble inside the sensor tip. If necessary,
repeat this procedure one more time.
Check the cable wiring of the sensor cable on the junction box.
Otherwise connect the sensor to the primary master e.g.
PACTware
damage.
Check the electrical connection again! Check the installation
location: is liquid medium present?
Exchange pH sensor.
TM
FTD/DTM or to the HART® handheld to exclude a sensor
TM
FTD/DTM or to the HART® handheld to exclude a sensor
28
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SMARTPAT PH 8530
OPERATION
5.3 Status messages and diagnostic information
Measurements out of specification
Message
Message Description
MessageMessage
S01 pH value > pH max
S02 pH value < pH min
S03 Temp. value > Temp max
S04 Temp. value < Temp min
Maintenance
Message
Message Description
MessageMessage
M01 Slope < -65 mV/pH Recalibrate the sensor. For more information refer
M02 Slope > -50 mV/pH
Description Action
DescriptionDescription
pH value out of range
pH value out of range
Temperature value out of range
Temperature value out of range
Description Action
DescriptionDescription
Action
ActionAction
Consider the measuring range limits, otherwise
select a suitable sensor for the process conditions of
the application.
Action
ActionAction
to
Calibration with PACTwareTM
on page 23.
5
M03 Zero point < -99 mV
M04 Zero point > +99 mV
M05 Maintenance interval expired
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6
SERVICE
6.1 Maintenance
6.1.1 Cleaning
INFORMATION!
Recalibrate the sensor after each cleaning procedure.
• Slight dirt residues or dust: Rinse the sensor tip with demineralised water and clean it with a
soft tissue.
• Oily and greasy coatings: Remove with a warm soap solution and rinse with demineralised
water.
• Hardness deposits or metal hydroxide deposits: Soak the sensor tip including diaphragm in
10% citric acid or hypochloric acid for a couple of minutes and rinse the complete glass shaft
of the sensor with demineralised water.
• Biological fouling: Soak the sensor tip including diaphragm in 10% pepsin solution for
minimum 3 hours and afterwards rinse the complete glass shaft of sensor with demineralised
water.
6.1.2 Aging and re-calibration
SMARTPAT PH 8530
During operation, but already during storage, pH sensors age due to poisoning effects of the
inner buffer system. Therefore it is important to re-calibrate the sensor in regular intervals.
Consider status messages and diagnostic information. For further information refer to
messages and diagnostic information
When the sensor becomes too old to provide reliable measurements, an error message (see on
page 23) appears after the calibration procedure. In this case, the sensor has to be replaced.
Aging effects of sensor:
Aging effects of sensor:
Aging effects of sensor:Aging effects of sensor:
• Decrease of slope
Decrease of slope due to abrasion, drying, corrosion of glass tip coating and leaching:
Decrease of slopeDecrease of slope
The slope should be < -50 mV/pH. An optimal value is -59 mV/pH at 25°C/ 77°F. When the
slope rises above -50 mV/pH, an error message is displayed and the sensor has to be
replaced.
The slope of the sensor is displayed after each calibration procedure.
• Shift of zero point
Shift of zero point due to strong temperature changes, leaching and contamination of
Shift of zero pointShift of zero point
reference half cell or increased resistance between glass tip and reference half cell:
The zero point should lie between -58...+58 mV at pH 7.
An optimal value is 0 mV at pH 7.
The zero point of the sensor is displayed after each calibration procedure.
The following figure shows the aging effects:
on page 29.
Status
30
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SMARTPAT PH 8530
The following figure shows the aging effects
Figure 6-1: Aging effects of sensor
1 Horizontal shift of slope
2 Vertical shift of slope
3 Decrease of slope
SERVICE
6
INFORMATION!
The lifetime expectation depends heavily on the application. The right choice of the sensor type is
very important.
6.2 Availability of services
The manufacturer offers a range of services to support the customer after expiration of the
warranty. These include repair, maintenance, technical support and training.
INFORMATION!
For more precise information, please contact your local sales office.
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6
SERVICE
6.3 Returning the device to the manufacturer
6.3.1 General information
This device has been carefully manufactured and tested. If installed and operated in accordance
with these operating instructions, it will rarely present any problems.
CAUTION!
Should you nevertheless need to return a device for inspection or repair, please pay strict
attention to the following points:
•
Due to statutory regulations on environmental protection and safeguarding the health and
safety of the personnel, the manufacturer may only handle, test and repair returned devices
that have been in contact with products without risk to personnel and environment.
•
This means that the manufacturer can only service this device if it is accompanied by the
following certificate (see next section) confirming that the device is safe to handle.
CAUTION!
If the device has been operated with toxic, caustic, flammable or water-endangering products,
you are kindly requested:
•
to check and ensure, if necessary by rinsing or neutralising, that all cavities are free from
such dangerous substances,
•
to enclose a certificate with the device confirming that is safe to handle and stating the
product used.
SMARTPAT PH 8530
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SMARTPAT PH 8530
6.3.2 Form (for copying) to accompany a returned device
CAUTION!
To avoid any risk for our service personel, this form has to be accessible from outside of the
packaging with the returned device.
Company: Address:
Department: Name:
Tel. no.: Fax no. and/or Email address:
Manufacturer's order no. or serial no.:
The device has been operated with the following medium:
This medium is: radioactive
water-hazardous
toxic
caustic
flammable
We checked that all cavities in the device are free from such substances.
We have flushed out and neutralized all cavities in the device.
SERVICE
6
We hereby confirm that there is no risk to persons or the environment through any residual media contained in the
device when it is returned.
Date: Signature:
Stamp:
6.4 Disposal
CAUTION!
Disposal must be carried out in accordance with legislation applicable in your country.
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
According to the directive 2012/19/EU, the monitoring and control instruments marked with the
WEEE symbol and reaching their end-of-life must not be disposed of with other waste
The user must dispose of the WEEE to a designated collection point for the recycling of WEEE or
send them back to our local organisation or authorised representative.
must not be disposed of with other waste.
must not be disposed of with other wastemust not be disposed of with other waste
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7
TECHNICAL DATA
7.1 Measuring principle
7.1.1 pH measurement
SMARTPAT PH 8530
Figure 7-1: Measuring principle for pH measurement
1 Reference electrode
2 Measuring electrode
3 Diaphragm in contact with KCl solution and measuring medium
4 Inner pH 7 buffer solution
5 Surface potential on the inside (contact with buffer solution)
6 pH sensitive glass (membrane glass)
7 Surface potential on the outside (contact with measuring medium)
8 Measuring medium
The measuring principle of a pH sensor is based on a pH sensitive glass (membrane glass).
When the pH sensitive glass gets into contact with a liquid, a thin layer of hydrated gel develops
on the surface, enabling an ion exchange between the glass surface and the liquid. The so-called
Nernst potential builds up on the glass surface. If both sides of the glass are in contact with
liquids, a voltage may be detected between the two surface potentials. The voltage correlates to
+
the difference in H
ion concentration and thus to the difference of pH values in both liquids.
The pH sensor contains an internal buffer solution with a known pH value. If the pH value of the
measuring medium on the outside of the sensor is equal to the pH value of the inner buffer, the
resulting voltage is 0 V.
If the pH value of the medium differs from the internal pH value, a voltage between the internal
and the external layer can be measured. From the resulting voltage, the pH difference of the two
liquids can be calculated.
34
The voltage is measured using a measuring electrode and a reference electrode; both are built
into the sensor. The measuring electrode is in contact with the known buffer solution in the pH
sensitive glass bulb. The reference electrode is immersed into a saturated solution of potassium
chloride (KCl). The KCl solution itself is in electrical contact with the measuring medium by
means of a diaphragm. The diaphragm prevents the measuring medium from penetrating into
the reference system but still allows electrical contact with the measuring medium.
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SMARTPAT PH 8530
The voltage change of a pH sensor at 25°C/ 77°F is around -59 mV for each pH unit. This is also
called the slope of the pH sensor. The slope is temperature dependent and decreases over life
time of the sensor.
TECHNICAL DATA
7
Figure 7-2: Optimal slope at 25°C/77°F
To compensate for the temperature dependency of the pH measurement, the temperature of the
medium can be measured and automatically compensated.
Figure 7-3: Temperature dependency of the Nernst Factor (theoretical slope of a pH sensor)
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7
TECHNICAL DATA
7.2 Technical data
INFORMATION!
•
The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local sales office.
•
Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Downloadcenter).
Measuring system
Measuring principle Potentiometric
Measuring range 0…14 pH
Design
Shaft diameter 12 mm / 0.47"
Insertion length 120 mm / 4.72"; 225 mm / 8.86"
Temperature sensor Pt1000
Connector VarioPin 2.0 (VP2)
SMARTPAT PH 8530
Operating conditions
Process temperature 0...+80°C / +32...+176°F
Ambient temperature -10...+85°C / +14...+185°F
Storage temperature 4...+30°C / +40...+86°F
Process pressure Max. 12 bar / 174 psi
Conductivity >2µS/cm
Installation conditions
Ingress protection IP68
Weight Approx. 80 g / 0.18 lb
Process connection PG 13.5
Materials
Sensor shaft Glass
Membrane glass A glass
Inner buffer pH 7.0
Reference KCl gel
Diaphragm 3 x ceramic
O-Ring EPDM (FDA)
Sensor head Nickel plated brass body with VP2 connector
36
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SMARTPAT PH 8530
Communication
pH range 0...14 pH
Resolution pH range 0.01 pH
Output signal 4...20 mA (passive)
Output resolution 20 µA
Field communication
Time constant 1...60 seconds
Electrical connections
Power supply 15...30 VDC loop powered
Measuring range
Load Minimum 0 Ω; maximum RL = ((U
Error signal Acc. to NAMUR NE 43
®
HART
Device revision 1
Physical layer FSK
Device category Sensor, galvanically isolated
System requirements
Multidrop operation 4mA
TECHNICAL DATA
HART® 7 - FSK 1200 physical layer definition on top of the current loop
4...20 mA + HART® protocol
- 15 VDC) / 22 mA)
ext.
Upper value: ≥ 21.0 mA
HART® protocol via current output
250 Ω loop resistance for HART® communication
In a multidrop communication system, up to 32 devices can be connected. For
installation in a multidrop communication system please consider the voltage
drop for the 250 Ω loop resistance for HART
voltage has to be adjusted.
®
communication. The supply
7
Approvals
CE
This device fulfils the statutory requirements of the EC directives. The manufacturer certifies successful
testing of the product by applying the CE mark.
Shock resistance: IEC 60068-2-31, Environmental testing – Part 2: Test Ec
Electromagnetic
compatibility:
Acc. to EN 61326, NAMUR NE 21
EMC Directive 2004/108/EC (valid until 2016/04/19) or
EMC Directive 2014/30/EU (valid from 2016/04/20)
INFORMATION!
For further information contact your local sales office.
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7
TECHNICAL DATA
7.3 Dimensions
Figure 7-4: SMARTPAT PH 8530 with VP2
a 104 4.09
b 120 / 225 4.72 / 8.86
c 12 0.47
d Ø12 Ø0.47
SMARTPAT PH 8530
Dimensions [mm] Dimensions [inch]
38
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SMARTPAT PH 8530
8.1 General description
The open HART® protocol, which can be used for free, is integrated into the sensor for
communication.
Devices which support the HART
devices. When it comes to operating devices (Master), both manual control units (Secondary
Master) and PC-supported workstations (Primary Master) are used in, for example, a control
center.
®
HART
from 2-wire to intrinsically safe versions for use in hazardous areas.
The HART
all of the connected devices can communicate digitally with one another via the HART
while simultaneously transmitting the analogue signals.
When it comes to the field devices and secondary masters, the FSK or HART
integrated. If a PC is used, an external modem must be connected to the serial interface
(USB interface). There are, however, other connection variants which can be seen in the
following connection figures.
field devices include sensors, signal converters and actuators. The field devices range
®
data are superimposed over the analogue 4...20 mA signal via FSK modem. This way,
DESCRIPTION OF HART INTERFACE
®
protocol are classified as either operating devices or field
®
protocol
®
modem is
8
8.2 Software history
INFORMATION!
In the table below, "x" is a placeholder for possible multi-digit alphanumeric combinations,
depending on the available version.
Release date SW version HW version
2013-04-01 1.0.x 1.0.x 1 1
2015-12-01 1.0.x 1.0.x 1 2
HART® identification codes and revision numbers
Manufacturer ID: 69 (0x45)
Device: 194 (0xC2)
Device Revision: 1
DD Revision: 2
HART® Universal Revision:
FC 475 system SW.Rev.: ≥ 3.8
PDM version: ≥ 6.1
FDT version: ≥ 1.2
®
HART
Device Revision DD Revision
7
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8
DESCRIPTION OF HART INTERFACE
8.3 Connection variants
CAUTION!
For installation in a multidrop communication system please consider the voltage drop for the
®
250 Ω loop resistance for HART
The sensor is a 2-wire device with a passive 4...20 mA current output and HART® interface.
• Multidrop mode is supported
Multidrop mode is supported
Multidrop mode is supportedMultidrop mode is supported
In a multidrop communication system, up to 32 devices can be connected to a common
transmission cable.
• Burst mode is not supported
Burst mode is not supported
Burst mode is not supportedBurst mode is not supported
In the burst mode a slave device transfers cyclic pre-defined response telegrams, to get a
higher rate of data transfer.
There are two ways of using the HART
• as Point-to-Point connection and
• as Multidrop connection, with 2-wire connection.
communication. The supply voltage has to be adjusted.
®
communication:
SMARTPAT PH 8530
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SMARTPAT PH 8530
DESCRIPTION OF HART INTERFACE
8.3.1 Point-to-Point connection - analogue / digital mode
Point-to-Point connection between the sensor and the HART® Master.
The current output of the sensor is passive.
8
Figure 8-1: Point- to-Point connection
TM
1 Primary master with e.g. PACTware
2 FSK modem
3 HART
4 SMARTMAC 200 W
5 SMARTPAT Sensor
6 Secondary master with HART
7 Power supply for devices (slaves) with passive current output
8 Load ≥ 250 Ω (Ohm)
®
signal
®
FDT/DTM
DD
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8
DESCRIPTION OF HART INTERFACE
SMARTPAT PH 8530
8.4 Inputs/outputs and HART® dynamic variables and device variables
PV = Primary Variable; SV = Secondary Variable; TV = Tertiary Variable; 4V = Fourth Variable
HART® dynamic variable
PV SV TV QV
pH Electrode voltage Temperature Resistance
Code = device variable code
Device variables
HART® device variable
pH value 0 linear
Electrode voltage 1 linear
Temperature 2 linear
Resistance 3 linear
The HART® dynamic variable PV is always connected to the HART® current output which is
assigned to the pH value.
Code Type
8.5 Field Communicator 475 (FC 475)
The Field Communicator is a hand terminal from Emerson Process Management that is
®
designed to configure HART
used to integrate different devices into the Field Communicator.
8.5.1 Installation
The HART® Device Description for the sensor must be installed on the Field Communicator.
Otherwise only the functions of a generic DD are available to the user and the entire device
control is not possible. A "Field Communicator Easy Upgrade Programming Utility" is required to
install the DDs on the Field Communicator.
and Foundation Fieldbus devices. Device Descriptions (DDs) are
42
The Field Communicator must be equipped with a system card with "Easy Upgrade Option". For
details consult the Field Communicator User’s Manual.
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SMARTPAT PH 8530
DESCRIPTION OF HART INTERFACE
8.6 Field Device Tool / Device Type Manager (FDT/DTM)
A Field Device Tool Container (FDT Container) is basically a PC program used to configure a field
®
device via HART
. To adapt different devices, the FDT container uses a so-called Device Type
Manager (DTM).
8.6.1 Installation
If the DTM for the sensor has not yet been installed on the FDT Container, setup is required and
is available for download from the website or on CD-ROM. See the supplied documentation for
information on how to install and set up the DTM.
8.7 Overview Basic-DD menu tree (positions in menu tree)
Main menu Submenu
1 Measuring value
1 Measuring value 1 pH value
1 Measuring value1 Measuring value
2 Temperature
3 Electrode voltage
4 Loop current
5 Error
6 Device state
2 Quick setup
2 Quick setup 1 TAG
2 Quick setup2 Quick setup
2 Manual hold
3 I/O
4 Calibration
5 Autoclaving counter
6 Input user password
3 Logbook
3 Logbook 1 Calibration logbook
3 Logbook3 Logbook
2 Error logbook
4 Setup
4 Setup 1 Process input
4 Setup4 Setup
2 I/O
3 I/O HART
4 Device
5 Service
5 Service 1 Service calibration
5 Service5 Service
2 Service parameter
3 Passwords
4 Sensor lock
®
8
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8
DESCRIPTION OF HART INTERFACE
8.8 Basic-DD menu tree (details for settings)
1 Measuring value
1 pH value
2 Temperature Display of the measured temperature value in °C / °F on process control
3 Electrode voltage Display of the measured electrode voltage in mV on process control system,
4 Loop current Display of the measured loop current in mA on process control system,
5 Error Display of status messages and diagnostic information. For further
6 Device state Display of status information icon for sensor according to NAMUR NE 107.
2 Quick setup
1 TAG Set the TAG number for the measuring loop.
2 Manual hold Activate or deactivate the manual hold function. Select between yes or no.
3 I/O Meas. value at 4 mA Set measuring value at 4 mA;
4 Calibration Start calibration procedure. For more information refer to
5 Autoclaving counter Rise autoclaving counter (yes/no)
6 Input user password Set password
Display of the measured pH value on process control system, HART®
handheld or display.
®
system, HART
®
handheld or display.
HART
®
handheld or display.
HART
information refer to
Meas. value at 20 mA Set measuring value at 20 mA;
Time constant Set time constant (1…60 seconds);
page 23.
handheld or display.
Status messages and diagnostic information
Default setting: pH 0
Default setting: pH 14
Default setting: 1 second
SMARTPAT PH 8530
on page 29.
Calibration
on
3 Logbooks
1 Calibration logbook Logbook for the last 20 calibration cycles
2 Error logbook Display errors
44
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SMARTPAT PH 8530
4 Setup
1 Process input Temperature Set temperature unit °C / °F
2 I/O Meas. value at 4 mA Set measuring value at 4 mA;
3 I/O HART TAG Set TAG for measuring loop
DESCRIPTION OF HART INTERFACE
Set temperature offset
Display date of offset calibration
Set temperature compensation
(automatic/manual); Default setting: automatic
Set temperature value 5...50°C/41...122°F (only if
manual temperature compensation is activated;
Default setting: 25°C/77°F )
Calibration Start calibration procedure. For more information
Maintenance interval Set maintenance interval in days (000...999 days);
Reset maintenance
interval
Meas. value at 20 mA Set measuring value at 20 mA;
Time constant Set time constant (1…60 seconds);
Message Display messages (32 packed ASCII)
Polling address Display polling address
Loop current mode Select between enable or disable to activate or
Device variables PV Display PV - pH with
refer to
Default setting: 000
Yes / No; Default setting: No
Default setting: pH 0
Default setting: pH 14
Default setting: 1 second
Set long TAG
Display of previous long TAG
deactivate the loop current mode
SV Display SV - electrode
TV Display TV -
QV Display QV - resistance
Calibration
on page 23
min. and max. limits
voltage in mV
temperature in °C / °F
with min. and max.
limits
8
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DESCRIPTION OF HART INTERFACE
4 Device Information Sensor information Order code
Commissioning Set date of commissioning
SMARTPAT PH 8530
Device name
Serial number
HART® ID
Polling address
Manufacturer ID
Date of manufacturing
SW version
HW version
Calibration Slope
Offset
Inner buffer
Buffer solution 1
Buffer solution 2
No. of calibrations
SIP counter
CIP counter
Autoclaving counter
Operating parameters
(OP)
Commissioning date
Operating hours
OP time > 80°C / 176°F
OP time > 110°C / 230°F
OP time < -300mV
OP time > +300mV
Max. temperature
Temp. compensation
Manual temp.
46
5 Service
1 Service calibration Trimming at 4 mA (+/-)
Trimming at 20 mA (+/-)
2 Service parameter Reset of sensor
Load factory setting
3 Password Password protection Activate or deactivate the password protection.
Password operator Set password for operator
Password
administrator
Reset password Reset all passwords (only administrator)
4 Sensor lock Select between YES
If you select YES
invalid for use. The HART
YES or NO
YESYES
YES the setting is not reversible anymore and the sensor is
YESYES
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Select between on and off.
Set password for administrator
NO to lock the sensor.
NONO
®
communication is not possible anymore.
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SMARTPAT PH 8530
9.1 pH as a function of mV
The pH-value is the negative decadative logarithm of the hydrogen ion concentration, and it is
directly related to the proportion of hydrogen ions H
sensor measures excess or deficit of the hydrogen ions and gives a proportional millivolt signal
as output. The signal is 59.16 mV per 1 pH at 25°C / 77°F. In clean water there is a total balance
between hydrogen ions and hydroxide ions, the output from the electrode is 0.0 mV and pH is 7.
The millivolt signal is measured by the pH sensor and the corresponding pH value is calculated
in the signal converter.
APPENDIX
+
to hydroxide ions OH- in the media. The pH-
9
mV pH
414 0 1 0.00000000000001 Sulfuric acid
355 1 0.1 0.0000000000001
296 2 0.01 0.000000000001 Coca Cola
237 3 0.001 0.00000000001 Vinegar
177 4 0.0001 0.0000000001 Orange juice
118 5 0.00001 0.000000001
59 6 0.000001 0.00000001 Milk
0 7 0.0000001 0.0000001 Clean water
-59 8 0.00000001 0.000001 Sea water
-118 9 0.000000001 0.00001
-177 10 0.0000000001 0.0001
-237 11 0.00000000001 0.001
-296 12 0.000000000001 0.01
-355 13 0.0000000000001 0.1
-414 14 0.00000000000001 1 Sodium hydroxide
H+ ions [mol/l] OH- ions [mol/l]
Example
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9
APPENDIX
9.2 pH temperature dependency
The output from a pH sensor varies with the temperature in a predictable way. The size of the
variation depends on both the temperature and the pH being measured.
°C °F pH pH pH pH pH pH pH pH pH pH pH pH
5 41 2.30 3.24 4.18 5.12 6.06 7.00 8.06 9.12 10.18 11.24 12.30 13.36
15 59 2.15 3.12 4.09 5.06 6.03 7.00 8.03 9.06 10.09 11.12 12.15 13.18
25 77 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00
35 95 1.85 2.88 3.91 4.94 5.97 7.00 7.97 8.94 9.91 10.88 11.85 12.82
45 113 1.70 2.76 3.82 4.88 5.94 7.00 7.94 8.88 9.82 10.76 11.70 12.64
55 131 1.55 2.64 3.73 4.82 5.91 7.00 7.91 88.2 9.73 10.64 11.55 12.46
65 149 1.40 2.52 3.64 4.76 5.88 7.00 7.88 8.76 9.64 10.52 11.40 12.28
75 167 1.25 2.40 3.55 4.70 5.85 7.00 7.85 8.70 9.55 10.40 11.25 12.10
85 185 1.10 2.28 3.46 4.64 5.82 7.00 7.82 8.64 9.46 10.28 11.10 11.92
95 203 0.95 2.16 3.37 4.58 5.79 7.00 7.79 8.58 9.37 10.16 10.95 11.74
SMARTPAT PH 8530
At pH 7 and 25°C / 77°F the temperature error is zero. If temperature or pH changes the
temperature error is calculated using the following formula:
0.03 pH difference / pH or 0.03 pH difference / K
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NOTES
10
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10
NOTES
SMARTPAT PH 8530
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NOTES
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KROHNE – Process instrumentation and measurement solutions
•
Flow
•
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•
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•
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•
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•
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Head Office KROHNE Messtechnik GmbH
Ludwig-Krohne-Str. 5
47058 Duisburg (Germany)
Tel.: +49 203 301 0
Fax: +49 203 301 10389
info@krohne.com
The current list of all KROHNE contacts and addresses can be found at:
© KROHNE 03/2016 - 4002544803 - MA SMARTPAT PH 8530 R03 en - Subject to change without notice.
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