Burkert 8285 User manual

www.buerkert.com
Measuring Module
8285 pH/ORP
for simultaneous measurement of
pH, ORP, and temperature
Latest product information:

Trademarks
The following registered trademarks are used in this instruction manual
without further marking
CalCheck®
Calimatic®
Sensocheck®
Sensoface®
ServiceScope®
Unical®
VariPower®
are registered trademarks of Knick GmbH & Co. KG, Germany
SMARTMEDIA®
is a registered trademark of Toshiba Corp., Japan
InPro®
is a registered trademark of Mettler Toledo GmbH, Switzerland
Christian Bürkert GmbH & Co. KG
Elektronische Messgeräte GmbH & Co. KG
Christian-Bürkert-Str. 13-17
74653 Ingelfingen
Phone: [phone] - 0
Fax: [phone] - 204
Internet: www.buerkert.com
[email protected]
Warranty
Defects occurring within 1 year from delivery date shall be remedied free of charge at our plant
(carriage and insurance paid by sender). Sensors, fittings, and accessories: 1 year
©2006 Subject to change without notice
Return of products under warranty
Please contact our Service Team before returning a defective device. Ship the cleaned device to the
address you have been given. If the device has been in contact with process fluids, it must be
decontaminated/disinfected before shipment. In that case, please attach a corresponding certificate,
for the health and safety of our service personnel.
Disposal
Please observe the applicable local or national regulations concerning the disposal of “waste electrical
and electronic equipment”.

3
EC Declaration of Conformity
EG-Konformitätserklärung • Déclaration de Conformité CE

48285
Contents
Warranty .................................................................................................................2
Return of products under warranty .......................................................................... 2
Disposal ................................................................................................................... 2
Trademarks .............................................................................................................. 2
EC Declaration of Conformity .................................................................................. 3
Intended use ............................................................................................................ 8
Conformity with FDA 21 CFR Part 11 ...................................................................... 8
Safety information ................................................................................................... 9
Software version ................................................................................................... 10
Modular concept ................................................................................................... 11
Short description .................................................................................... 12
Short description: FRONT 8285 .............................................................................. 12
Short description: Menu structure .......................................................................... 13
Short description: BASE module ............................................................................. 15
Terminal plate 8285 pH/ORP module ..................................................... 16
Attaching the terminal plates ............................................................................. 16
Inserting the module .............................................................................. 17
Wiring examples ..................................................................................... 18
pH measurement with Sensocheck of glass electrode ........................................ 18
Simultaneous pH and ORP measurement with Sensocheck of glass and
reference electrode ............................................................................................ 18
pH and ORP measurement simultaneous ........................................................... 19
pH measurement with Pfaudler differential probe .............................................. 20
Menu selection ........................................................................................ 21
Passcode entry ........................................................................................ 22
If you lose the Administrator passcode .............................................................. 22
To change a passcode ........................................................................................ 22
Configuring the measurement display ................................................. 23

5
Contents
Calibration / Adjustment ........................................................................ 25
Adjustment ............................................................................................................26
Calibration methods .............................................................................................. 27
One-point calibration ......................................................................................... 27
Two-point calibration ......................................................................................... 27
Three-point calibration ....................................................................................... 27
Sensor replacement - First Calibration ................................................................ 27
Temperature compensation ....................................................................................28
Temperature compensation during calibration ........................................................28
Automatic temperature compensation ...................................................................28
Manual temperature compensation ....................................................................... 28
Select calibration method ......................................................................................29
Calimatic automatic buffer recognition .............................................................. 31
Calibration with manual entry of buffer values ................................................. 33
Product calibration ............................................................................................. 35
Calibration by data entry of premeasured electrodes ......................................... 37
ORP calbration/adjustment ............................................................................... 39
ISFET zero adjustment ........................................................................................ 41
Parameter setting: Operating levels .................................................... 43
Administrator level .............................................................................................43
Operator level .................................................................................................... 43
Viewing level .....................................................................................................43
Parameter setting: Lock functions ......................................................................... 44
Call up parameter setting ...................................................................................... 45
Documenting the parameter setting ...................................................................... 46
Parameter setting: Cal preset values ...................................................................... 48
Cal preset values .................................................................................................... 48
Tolerance adjustment ............................................................................................. 48
Calimatic buffer ..................................................................................................... 51
Cal timer ...............................................................................................................51
Cal tolerance band ................................................................................................51
Parameter setting ..................................................................................................53
TC process medium ............................................................................................... 53

68285
Temperature compensation of process medium ................................. 54
ORP/rH value .........................................................................................................55
Delta function ........................................................................................................ 55
Calculation Blocks ................................................................................... 56
Messages: Default settings and selection range ..................................................... 59
Device limits ............................................................................................ 59
Setting the current output ..................................................................................... 61
Current outputs: Current output curves ................................................................. 62
Output filter ..........................................................................................................64
NAMUR signals: Current outputs ...........................................................................65
NAMUR signals: Relay contacts ..............................................................................66
Relay contacts: Protective wiring .......................................................... 67
Protective wiring of relay contacts ......................................................................... 67
Relay contacts ........................................................................................................ 68
Relay contacts, usage ............................................................................. 68
Limit value, hysteresis, contact type ....................................................................... 69
Icons in the measurement display: ......................................................................... 69
OK1, OK2 inputs: Specify level ............................................................................... 70
Switching parameter sets via OK2 .......................................................................... 71
The selection has no effect when working on SmartMedia card with
SW 8285-102. ........................................................................................... 71
Select parameter set (A, B) via input OK2 .............................................................. 71
Signal active parameter set via relay contact .......................................................... 71
Maintenance ............................................................................................ 72
Sensor monitor ...................................................................................................... 72
Temp probe adjustment ......................................................................................... 72
Contents

7
Contents
Diagnostics functions ............................................................................. 73
Device description .................................................................................................. 73
FRONT module ......................................................................................................73
Module BASE ......................................................................................................... 73
Module diagnostics ................................................................................................ 74
Sensor monitor ...................................................................................................... 74
ServiceScope .......................................................................................................... 74
Message list .......................................................................................................... 75
Logbook ................................................................................................................ 75
Cal timer ...............................................................................................................76
Adaptive cal timer ..................................................................................................76
Tolerance adjustment ............................................................................................. 76
Cal record .............................................................................................................. 77
Sensor network diagram ........................................................................................ 77
Statistics ................................................................................................................77
Setting diagnostics messages as favorite ................................................................ 78
Specifications .......................................................................................... 80
Appendix: ................................................................................................ 84
Minimum spans for current outputs ....................................................................... 84
Buffer table Knick / Mettler-Toledo ......................................................................... 85
Buffer table Merck / Riedel .................................................................................... 86
Buffer table DIN 19267 .......................................................................................... 87
Buffer table NIST Standard (DIN 19266: 2000-01) .................................................. 88
Buffer table Techn. buffers to NIST ......................................................................... 89
Buffer set to be entered: SW 8285-002 ................................................................. 90
Index ....................................................................................................... 95
Display icons ......................................................................................... 103
Overview of operating functions ........................................................ 104

88285
Intended use
In their directive “Title 21 Code of Federal Regulations, 21 CFR Part 11,
Electronic Records; Electronic Signatures“ the US American health agency
FDA (Food and Drug Administration) regulates the production and processing
of electronic documents for pharmaceutical development and production.
This results in requirements for measuring devices used for corresponding
applications. The following features ensure that the Series 8285 modular
process analysis system meets the demands of FDA 21 CFR Part 11:
Electronic Signature
Access to the device functions is regulated and limited by individually adjust-
able codes – “Passcodes“. This prevents unauthorized modification of device
settings or manipulation of the measurement results. Appropriate use of
these passcodes makes them suitable as electronic signature.
Audit Trail Log
Every change of device settings can be automatically recorded and docu-
mented in the Audit Trail Log on the SmartMedia card. The recording can be
encoded.
Conformity with FDA 21 CFR Part 11
The module is used for simultaneous pH, ORP, and temperature measure-
ment with glass electrodes or ISFET sensors.

9
Caution!
Never try to open the module! If a repair should be required, return the
module to our factory.
If the specifications in the instruction manual are not sufficient for assessing
the safety of operation, please contact the manufacturer to make sure that
your intended application is possible and safe.
Be sure to observe during installation:
Switch off power supply before replacing or inserting a module.
Protect the signal inputs of the modules against electrostatic discharge.
Before commissioning it must be proved that the device may be connected
with other equipment.
Observe correct shielding: To avoid interferences, the cable shielding must
be completely covered by the ESD shielding cap.
•
•
•
•
Safety information

10 8285
Software version
Module 8285 pH/ORP
Device software M 8285
The pH/ORP module is supported by software version 3.0 or higher.
Module software 8285 pH/ORP
Software version 2.x
Menu Display Device description
Provides information about all
modules installed: Module type and
function, serial number, hardware
and software version and device
options.
Select the different modules (FRONT,
BASE, slots 1 - 3) using the arrow
keys.
Device description
Return
22.7 °C
0.003mS/cm
Operating panel
Module 8285 FRONT
Hardware: 2, Software: 6.4
Serial number: 0070815
BASE
Module FRONT
Query actual device/module software
When the analyzer is in measuring mode:
Press menu key, open Diagnostics menu.
Options

11
Modular concept
Basic unit, measuring module, additional functions
Documentation
The basic unit is accompanied by a CD-ROM containing the complete docu-
mentation.
Latest product information as well as instruction manuals for earlier software
releases are available at
www.buerkert.com.
The Model 8285 is an expandable modular process analysis system.
The basic unit (FRONT and BASE) provides three slots which can be equipped
by the user with any combination of measuring or communication modules.
The software capabilities can be expanded by additional functions (options).
Additional functions must be ordered separately. They are supplied with a
device-specific TAN for function release.
3 module slots
for free combination of
measuring and communica-
tion modules
Measuring modules
pH / ORP / Temp
Contacting conductivity / Temp
•
•
Additional
functions
Activation via device-
specific TAN
SmartMedia card
Data recording
8285 modular process analysis system
Communication modules
OUT (additional switching and cur-
rent outputs)
PID (analog and digital controller)
•
•

12 8285
Short description
Short description: FRONT 8285
Modular hardware and software system for liquid analysis.
Transflective LC graphic
display (240 x 160 pixels)
white backlighting, high resolution
and high contrast.
Red LED
signals failure (On) or
maintenance request/function check
(flashing) according to NE 44.
4 captive screws
for opening the analyzer
(Caution! Make sure that the gasket between
FRONT and BASE is properly seated and clean!)
Green LED
Voltage supply okay
5 self-sealing cable glands
M20 x 1.5
for entry of voltage supply and signal lines
2 Softkeys
with context-sensitive functions.
User interface
with plaintext menus as recom-
mended by NAMUR.
Menu texts can be switched to:
German, English, French, Italian,
Swedish, and Spanish.
Intuitively acquirable menu logic,
based on Windows standards.
Control panel
3 function keys
(menu, meas, enter)
and 4 arrow keys for menu selection
and data entries
Measurement display
Secondary displays

13
Measuring
Short description: Menu structure
Basic functions: Calibration, maintenance, parameter setting, diagnostics
Calibration Maintenance Parameter setting Diagnostics
Menu groups
1
2
3
1147 2958 1246
Operator level
1989
Admin. level
Passcode:
Selection of
further
menu items:
Module 1
Module 2
Module 3
BASE
Module 1
Module 2
Module 3
SYSTEM
FRONT
BASE
Module 1
Module 2
Module 3
Message list
Point of
meas
description
Logbook
Device description
FRONT
BASE
Module 1
Module 2
Module 3
4
5
6
Legend:
Pressing the menu key accesses menu selection
Pressing the meas key returns to measurement
Menu groups are selected using the arrow keys
Press enter to confirm, enter passcode
Further menu items are displayed
Selected functions of the Diagnostics menu can be
recalled via softkey even when in measuring mode
1)
2)
3)
4)
5)
6)

14 8285
Short description: FRONT module
8285
View into the open device (FRONT)
Terminal plates
of “hidden” modules
Each module comes with an adhesive
label containing the contact assignments.
This label should be sticked to the inner
side of the front
(as shown). Then, the terminal assign-
ments remain visible even if further
modules are inserted.
Slot for SmartMedia card
Data recording
The SmartMedia card expands the
measurement recorder capacity to
> 50000 records.
Exchange of parameter sets
5 parameter sets can be stored on
the SmartMedia card, 2 of them
can be loaded to the analyzer and
switched by remote control.
Parameter sets can be transmitted
from one analyzer to the other.
Function expansions are possible
with additional software modules,
which are released using transaction
numbers (TAN).
Software updates
•
•
•
•
The circumferential sealing
guarantees IP 65 protection and allows spray
cleaning / disinfection.
Caution! Keep clean!
Replacing the front module
Pull off power cord and ground wire.
To separate the FRONT module from
the BASE module, turn the retaining
screws of the pivot hinge by 90°.

15
Short description: BASE module
8285
View into the open device (BASE, 3 function modules installed)
BASE
2 current outputs (free assignment of
process variable) and 4 relay contacts,
2 digital inputs.
VariPower broad-range power supply,
20 ... 265 V AC/DC, suitable for all public
mains supplies in the world.
Important note concerning SmartMedia card
The SmartMedia card may be inserted or replaced with the power supply
switched on. Before a memory card is removed, it must be “closed” in the
maintenance menu. When closing the device, make sure that the sealing is
properly seated and clean.
Module equipment
Module identification: Plug & Play
Up to 3 modules can be combined as
desired. Several input and communication
modules are available.
Warning!
Do not touch the
terminal compartment, there may be
dangerous contact voltages!

16 8285
Terminal plate 8285 pH/ORP module
Attaching the terminal plates
The terminal plates of the lower modules can be
sticked to the inner side of the door.
This facilitates maintenance and service.

17
Inserting the module
Note: Be sure to connect the shielding properly!
Switch off power supply
Open the device (loosen the 4 screws at the front)
Place module in slot (D-SUB connector)
Tighten fastening screws of the module
Open ESD shielding cap (covering terminals 2 and 8)
Connect sensor cable.
To avoid interferences, the cable shielding must be completely
covered by the ESD shielding cap.
Close ESD shielding cap (covering terminals 2 and 8)
Close device, tighten screws at the front
Switch on power supply
Set parameters
Make sure that the cable
glands are tightly closed to
protect against humidity.
Terminals 2 and 8 are covered
by an ESD shield.
To connect the sensor cable, just
pull it back.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

18 8285
Wiring example 1
19
Wiring example 2
pH measurement with Sensocheck of glass electrode
Simultaneous pH and ORP measurement
with Sensocheck of glass and reference electrode
Wiring examples
Note: Be sure to connect the shielding properly!
8285 pH/ORP
8285 pH/ORP
19
8285 pH/ORP
8285 pH/ORP

19
Wiring examples
Note: Be sure to connect the shielding properly!
19
jumper
green white
Wiring example 3
pH and ORP measurement simultaneous
with Sensocheck of glass and reference electrode
8285 pH/ORP
8285 pH/ORP
core
shield red gn/ye
blue
gray: through
470 nF to probe body
rhodium electrode
Model
8201

20 8285
Wiring example 4
pH measurement with Pfaudler differential probe
Impedance monitoring of measuring and reference electrode
coax core
coax red
white
green
blue, gray
8285 pH/ORP
8285 pH/ORP
gn/ye
Model
8201
jumper