Burkert 8205 User Manual
8205 426493C
E-1-
pH CONTROLLER 8205
TABLE OF CONTENTS
1 INTRODUCTION ................................................................................................................ E-2
1.1 Unpacking and Control....................................................................................................... E-2
1.2 About this Manual .............................................................................................................. E-2
1.3 User's Responsibility for Safety ......................................................................................... E-2
1.4 Electromagnetic Compatibility ........................................................................................... E-2
2 SPECIFICATION................................................................................................................ E-3
2.1 Compact pH-Controller Type 8205 Specification .............................................................. E-3
2.2 Separate pH-Controller Type 8205 Specification .............................................................. E-3
2.3 Design and Measuring Principle ........................................................................................ E-4
2.4 Dimensions ......................................................................................................................... E-7
2.5 Technical Data ................................................................................................................... E-8
3 INSTALLATION ............................................................................................................... E-10
3.1 Installation Guidelines ...................................................................................................... E-10
3.2 Electrical Wiring ............................................................................................................... E-11
3.2.1 General Electrical Connection ................................................................................ E-11
3.2.2 pH Controller type 8205 compact ...........................................................................E-12
3..2.3 pH-Controller type 8205 panel version .................................................................. E-13
3.2.4 pH-Controller type 8205 wall-mounted 12-30 VDC................................................ E-14
3.2.5 pH-Controller type 8205 wall-mounted 115-230 VAC ............................................ E-15
4 OPERATION .................................................................................................................... E-16
4.1 Controller Operating and Control Elements .................................................................... E-16
4.2 Operation Mode Display .................................................................................................. E-17
4.2.1 Working rates control ..............................................................................................E-17
4.2.2 HOLD Function ....................................................................................................... E-18
4.2.3 Calibration of pH Electrode ..................................................................................... E-18
4.3 Calibration Mode .............................................................................................................. E-19
4.3.1 Language ................................................................................................................ E-19
4.3.2 Temperature Units .................................................................................................. E-20
4.3.3 Output Current ........................................................................................................ E-21
4.3.4 Output Signal 1 ....................................................................................................... E-22
4.3.5 Output Signal 2 ....................................................................................................... E-23
4.3.6 Setpoint adjustment ................................................................................................ E-24
4.3.7 Control Mode Selection .......................................................................................... E-25
4.3.8 Alarm Threshold Selection...................................................................................... E-26
4.3.9 Hand Display Selection ........................................................................................... E-27
4.3.10 Temperature Compensation Mode ....................................................................... E-27
4.3.11 Filter Function ....................................................................................................... E-28
4.4 Test Menu......................................................................................................................... E-28
4.4.1 Offset-Compensation .............................................................................................. E-29
4.4.2 Span-Compensation ............................................................................................... E-29
4.4.3 Temperature adjustment ......................................................................................... E-29
4.4.4 pH Simulation .......................................................................................................... E-30
4.4.5 Display of Electrode Voltage .................................................................................. E-30
5 MAINTENANCE ...............................................................................................................E-30
5.1 Replacement of the Electrode ......................................................................................... E-30
5.2 Storing and Cleaning of the Electrode ............................................................................. E-31
5.3 Error Messages ................................................................................................................E-32
5.4 Factory Setting of pH Controller Type 8205 ...................................................................E-32
5.5 Spare Parts List ................................................................................................................ E-33
Appendix Characteristics of PID controllers ............................................................. E-36
E-2-
8205
pH CONTROLLER 8205
1 INTRODUCTION
Dear Customer,
Congratulations on your purchase of our
digital pH controller type 8205 .
BEFORE INSTALLING OR USING THIS
PRODUCT, PLEASE TAKE OUR ADVICE
AND READ THE ENTIRE MANUAL
THOROUGHLY.
This will enable you to fully profit from all of
the advantages offered by this product.
1.1 Unpacking and Control
Please verify that the product is complete
and free from any damage. The standard
delivery must include:
-1 8205 digital pH Controller
-1 Operating Instruction Manual
Compare the Type specifications on the
label to the adjacent list to ensure that you
have received the proper unit. If there is any
loss or damage, please contact your local
Bürkert subsidiary.
1.2 About this Manual
This manual does not contain any warranty
statement. Please refer to our general terms
of sale and delivery.
Only properly-trained staff should install and/
or repair this product. If difficulties
should occur at the time of installation,
please contact your nearest Bürkert sales
office for assistance.
1.3 User's Responsibility for Safety
Bürkert manufactures a broad range of pH
controllers (compact, wall-mounted or panel
versions). While each of these products is
designed to operate in a wide variety of
applications, it is the user's responsibility to
select a controller model that is appropriate
for the application, install it properly, and
maintain all components. Special Warning
must be paid to the chemical resistance of
the controller against the fluids which are
directly contacting the product.
This symbol appears in the
manual to call special warning to
instructions that affect the safe
installation, function and use of
the product.
1.4 Electromagnetic compatibility
This device conforms to the EMC-Directive
of the Council of European Communities
89/336/EEC.
In order to comply with this directive, follow
the wiring instructions.
!
8205
E-3-
pH CONTROLLER 8205
2 SPECIFICATION
2.1 Compact pH controller type 8205 specification
pH controller compact 4-20 mA output; 2 Relay pulse outputs; 1 relay alarm
Type compact 2 x PG 13.5 2 x G 1/2"
Controller Gasket Electrode Worlwide Ident N° N.America Ident N°
8205 FPM GLS 426430Q 426460W
8205 FPM STE 426431D 426461K
8205 FPM LEI 426432E 426462L
8205 FPM SCH 426433F 426463M
8205 FPM HOL 426434G 426464N
8205 EPDM GLS 426435H 426465P
8205 EPDM STE 426436A 426466Q
8205 EPDM LEI 426437B 426467R
8205 EPDM SCH 426438L 426468S
8205 EPDM HOL 426439M 426469T
pH controller compact 4-20 mA output; 2 Triac pulse outputs; 1 relay alarm
Type compact 2 x PG 13.5 2 x G 1/2"
Controller Gasket Electrode Worlwide Ident N° N.America Ident N°
8205 FPM GLS 426440S 426470Y
8205 FPM STE 426441P 426471M
8205 FPM LEI 426442Q 426472N
8205 FPM SCH 426443R 426473P
8205 FPM HOL 426444J 426474Q
8205 EPDM GLS 426445K 426475R
8205 EPDM STE 426446L 426476J
8205 EPDM LEI 426447M 426477K
8205 EPDM SCH 426448W 426478U
8205 EPDM HOL 426449X 426479V
pH controller compact 4-20 mA output; 2 Transistor pulse outputs; 1 relay alarm
Type compact 2 x PG 13.5 2 x G 1/2"
Controller Gasket Electrode Worlwide Ident N° N.America Ident N°
8205 FPM GLS 426450U 426480K
8205 FPM STE 426451R 426481G
8205 FPM LEI 426452J 426482H
8205 FPM SCH 426453K 426483A
8205 FPM HOL 426454L 426484B
8205 EPDM GLS 426455M 426485C
8205 EPDM STE 426456N 426486D
8205 EPDM LEI 426457P 426487E
8205 EPDM SCH 426458Y 426488P
8205 EPDM HOL 426459Z 426489Q
E-4-
8205
pH CONTROLLER 8205
2.3 Design and Measuring Principle
Design
pH controller type 8205 compact
The pH-controller compactly combines a
pH-sensor and a controller with display in
a splash-proof plastic IP65 enclosure.
The sensor component consists of a
replaceable combination pH-electrode,
screwed into the sensor housing with screwin threads PG 13.5. The measured signal is
conveyed to the controller via a coax plug.
The Pt1000 for automatic temperature
compensation is a standard feature in the
sensor housing (An option without Pt1000
is available, in this case,enter the process
temperature of the fluid cf §4.3.10).
The controller component converts the
measured signal, displays the actual value
and computes the command signals.
The output signals are provided via two PG
13.5.
2.2 Specification pH controller type 8205 Separate
pH controller type 8205 panel version
Type Pulse output Power Supply Order Nr
8205 Relays 12-30 VDC 427939K
8205 Triacs 12-30 VDC 427940Y
8205 Transistors 12-30 VDC 427941M
pH controller type 8205 wall-mounted version
Type Pulse output Power Supply Order Nr
8205 Relays 12-30 VDC 427946J
8205 Triacs 12-30 VDC 427947K
8205 Transistors 12-30 VDC 427948U
8205 Relays 115-230 VAC 427951P
8205 Triacs 115-230 VAC 427952Q
8205 Transistors 115-230 VAC 427953R
pH sensor for pH controller type 8205 separate versions.
See specific pH sensor type 8200 instruction manual.
2 SPECIFICATION
pH controller type 8205 separate
The pH transmission system combines a
pH sensor type 8200, and a separate pH
controller type 8205 with display.
The 8205 separate controller is available in
panel mounted version and in a wallmounted plastic IP65 enclosure for
connection to the pH sensor type 8200.
pH sensor type 8200
A wide range of pH sensors offers large
capabilities of mounting and pH
measurement.
The characteristics of electrodes are
described in the 8200 Operating
Manual.The Pt1000 for automatic
temperature compensation is available as
an option feature in pH sensor housings.
8205
E-5-
pH CONTROLLER 8205
2 SPECIFICATION
WASTE WATER
WASTE WATER
ACID BASE
ACID BASE
pH 7
Measuring Principle
The most important part of a pH electrode
is the glass membrane of pH-selective glass.
When the electrode is immersed into the
solution, an electrical charge caused by Hions (H+) generates a cell voltage between
the glass membrane and the solution. This
electric voltage is recorded with reference
to a reference electrode, located around the
pH glass electrode. The cell voltage of the
combination electrode is directly
proportional to the pH value (59.16 mV per
pH unit at 25°C).
The controller functions in a 3-wire circuit
and requires a power supply of 12...30 VDC.
A relay alarm contact, and a 4...20 mA
standard signal proportional to the pH or to
the T° C, are available as output signals.
The pulse output signals are provided by
relays (standard); triacs or transistors .
Controlling Principle
The pH controller type 8205 is designed for
use in static or dynamic process of pH
control. The output signals control a valve
(e.g.: Bürkert Type 2031) or a pump, by
means of impulses which times duration or
frequency is computed according to users
parameters and pH value of the fluid.
(See § 4.3 Operation).
A) Static process: Fluid controlled in a tank,
without significant flow, the control mode
is proportional.
B) Dynamic process: Fluid controlled in a
pipe, or in a tank with significant flow. The
control mode is PI or PID.
Fig. 2.2 Dynamic process control
The pH sensor type 8200 for pH controller
type 8205 separate version can be easily
installed into pipes using our specially
designed fitting system. Please refer to the
pH sensor type 8200 instruction manual
(Ref 428937J).
pH 7
Fig. 2.1 Static process control
Refer to Appendix A for general
characteristics of PID controllers.
E-6-
8205
pH CONTROLLER 8205
2.4 Dimensions of the pH controller type 8205 compact
PG 13,5
Version:
"STANDARD WORLWIDE"
See § 2.1
Version:
"NORTH AMERICA"
See § 2.1
G 1/2"
Fig. 2.3 Dimensions pH controller type 8205 compact
2 SPECIFICATION
8205
E-7-
pH CONTROLLER 8205
2 SPECIFICATION
covering strip
covering strip
Fig 2.4 Dimensions pH controller type 8205 panel version
+ 1 cable gland reducer
Fig 2.5 Dimensions pH controller type 8205 wall-mounted version
E-8-
8205
pH CONTROLLER 8205
2 SPECIFICATION
2.5 Technical Data 8205 pH Controller
2.5.1 pH controller type 8205 compact version specification
Ambient temperature 0 to 60°C (32 to 140°F)
Storing temperature 0 to 60°C (32 to 140°F)
Relative humidity max 80 %
Enclosure IP 65
Measuring range 0...14 pH
Measuring error +/-0,2%, depending on electrode calibration
Temperature compensation automatic (integrated Pt1000 or user parametred)
reference temperature 25oC (77°F)
Power supply: 12...30 VDC
Output signal 4...20 mA programmable ; proportional to the pH or temperature
Load max. 1300 Ω at 30 V ; max. 1000 Ω at 24 V ; max. 550 Ω at 15 V
Display 15 x 60 mm LCD 8 digits, alphanumeric,
15 segments, 9 mm high
Relay alarm output 1 relay, 3 A, 220 V, freely adjustable
Pulse Outputs 2 frequency and time duration adjustable outputs
- Relay Pulse Output: 3 A / 250 V max ; F < 1 Hz
- Transistor Pulse Output: 300 mA / 30 V max ; F < 17 Hz
- Triac Pulse Output: 1 A / 250 V max ; F < 17 Hz
Pt1000 SS 1.4571 (Ti 316)
Control Mode P ; PI or PID programmable
Sensor housing PVDF ; O-rings FPM/EPDM
Electronics housing PC ; front plate polyester
Technical Data: Electrodes GLS STE
Housing glass shaft glass shaft
Fluid pressure 0-6 bar 0-3 bar
(0-87 psi) (0-44 psi)
Fluid temperature 0-90° C 0-130° C
(32-194°F) (32-266°F)
Max. pressure at max. temperature 4 bar (58 psi) 2 bar (29 psi)
Diaphragm zirkondioxide zirkondioxide
Reference electrolyte gel gel
LEI SCH HOL
Housing glass shaft glass shaft
Fluid pressure 0-2 bar 0-2 bar 0-6 bar
(0-29 psi) (0-29 psi) (0-87 psi)
Fluid temperature 0-60° C 0-40° C 0-90° C
(32-140°F) (32-104°F) (32-194°F)
Max. pressure at max. temperature 2 bar (29 psi) 2 bar (29 psi) 4 bar (58 psi)
Diaphragm 3 x zirkondioxide none none
Reference electrolyte KCl 3-Molar polymerised polymerised
8205
E-9-
pH CONTROLLER 82052 SPECIFICATION
2.5.2 pH controller type 8205 separate version specification
Ambient temperature 0 to 60°C (32 to 140°F)
Storing temperature 0 to 60°C (32 to 140°F)
Relative humidity 80 %
Enclosure Wall-mounted version IP 65 ; ABS
Panel version IP 20 (rear plate) ; IP65 (front plate) ; PC
Power supply: 12...30 VDC (115/220 VAC Option wall-mounted version)
Consumption: 20 mA (with triac, or transistor) ; or 80 mA (with relays)
Output signal 4...20 mA programmable ; proportional to the pH or temperature
Load max. 1300 Ω at 30 V ; max. 1000 Ω at 24 V ; max. 550 Ω at 15 V
Display 15 x 60 mm LCD 8 digits, alphanumeric,
15 segments, 9 mm high
Relay alarm output 1 relay, 3 A, 220 V, freely adjustable
Pulse Outputs 2 frequency and time duration adjustable outputs
- Relay Pulse Output: 3 A / 250 V max ; F < 1 Hz
- Transistor Pulse Output: 300 mA / 30 V max ; F < 17 Hz
- Triac Pulse Output: 1 A / 250 V max ; F < 17 Hz
Control Mode P ; PI or PID programmable
pH sensor type 8200 guide (see pH sensor 8200 reference manual (Ref 428937J))
Technical Data: Electrodes Easycontrol Liq-Glas PG
Measuring range 0-14 1-12
Housing glass shaft glass shaft
Fluid pressure 0-2 bar 0-2 bar
Fluid temperature 0 - +60° C -5 - +60° C
Metrocode Polilyte Std Polilyte HP
Measuring range 0-14 2-14 2-14
Housing glass shaft glass shaft glass shaft
Fluid pressure 0-16 bar 0-2 bar 0-6 bar
Fluid temperature 0-+130° C 0-+40° C 0-+90° C
Temperature compensation with optional integrated Pt1000 (ref. temperature 25°C (77°F))
pH sensor type 8200 connection
Connection Material- connection size
G 2" PVC; PP; PVDF; SS
G1" PVC; PP; PVDF; SS
Sanitary SS DN40; DN50; DN65
Triclamp SS 50,5/64
Length pH Pt1000
2 m 427024H 427110Q
5 m 427025A 427113F
Cable for Pt1000 and pH
E-10-
8205
pH CONTROLLER 8205
3.1.2 Compact controller type 8205
installation
The pH controller can be easily installed in
pipes using our specially designed fitting
system. Before installation, the controller
must be calibrated with buffer solutions (see
§ 4.2). Remove protective cap of the sensor.
!
Fig. 3.1 Compact controller installation
3 INSTALLATION
3.1 Installation Guidelines
Before first electrode calibration,
immerse it for 2 hours at least in buffer
solution pH=7 or in a solution of KCl 3M
(223,6 g/l) or in drinkwater.
Pressure-Temperature-Diagram
Mind pressure-temperature dependence
according to the respective fitting materials.
Installation Guidelines
Mount the compact pH controller (or pH
sensor) in vertical position (max. ±75°) into
a horizontal pipe (cf fig. 3.1).
The electrode must continuously be
immersed into the measuring fluid in order
to protect it from drying out. The device must
be protected from constant heat radiation
and other environmental influences, such
as direct exposure to sunlight.
1.The fitting must be installed into the
pipe according to the installation
specifications in section 3.1.
2.Insert plastic nut into fitting, and let
plastic ring snap into guide bush .
3.Carefully insert the pH controller into
the fitting. If installed properly, the
controller cannot be rotated.
4.Tighten controller housing to fitting with
plastic nut .
CAUTION! Plastic nut must only be
tightened by hand!
-50
-30
-10 +10
+30
+50 +70
+90
+110 +130
0
2
1
3
4
5
6
7
8
9
10
PVC + PP
PVDF
PVDF (PN 6)
PVC (PN 6)
PP (PN 6)
Application range
8205
E-11-
pH CONTROLLER 8205
3 INSTALLATION
Front panel
For the cut-away of the front panel, follow the instructions on the enclosed delivery film.
Install the controller as follows:
1. Put gasket on the cover and place the complete unit in the panel cut-away.
2. Screw the spacer bolts on the panel fixing screws .
3. Insert the cable clips , to hold the different cables (power supply, outputs, sensor)
of the controller, into plate .
4. If a PLC is connected to the device, set the switch SW300 (cf § 3.2)
5. Plug connector on socket and fasten plate with screws on bolts , tightening
the lockwashers .
3.1.3 pH controller type 8205 panel installation
Fig 3.2 Installation pH controller type 8205 panel version
E-12-
8205
pH CONTROLLER 8205
3 INSTALLATION
3.1.4 pH controller type 8205 Wall-mounted version installation
The pH controller in wall-mounted version has 4 fixing holes in the bottom enclosure.
Remove the white blanking stripes and the cover to access to fixing holes .
Fuse
125 mA T
Switch for power
supply selection
230/115 VAC
3.2 Electrical connection
3.2.1 General electrical requirements
The connecting line conducts the measuring signal and must not be installed in combination
with high voltage or high frequency carrying lines. If a combined installation cannot be
avoided, either keep a min. space of 30 cm (approx. 1 ft) or use shielded cables. When
using shielded cables observe faultless grounding of the shield. For normal operating
conditions, the 4-20 mA output, and relays signals can be transmitted by a simple cable
of 0.75 mm2 . In case of doubt, always use a shielded cable.
The power supply must be of good quality (filtered and regulated).
!
For EMC purposes,the earth must
be connected to the controller.
Fig 3.3 Installation pH controller type 8205 wall-mounted version
8205
E-13-
pH CONTROLLER 8205
Note: PLC-connection. Depending on the PLC-version, the switch on the circuit board
must be put to position A or B (see fig. 3.4 and fig. 3.5).
Fig. 3.5 Connection of 4-20 mA output to a PLC
(Terminal type 8205 wall-mounted version)
Fig. 3.4 Pin assignment of 8205 compact
Pulse Output
relay (standard)
or triac
or transistor
Position A
0V
V+
4...20 mA
L-
8205
L+
8205
V+
L+
4...20 mA
0V
L-
Position B
9
8
10
9
8
10
SPS
SPS
3 INSTALLATION
3.2.2 Connection pH controller
type 8205 compact
The electrical wiring ensues via 2 cable
glands.
Remove the cover, pull the cable through
the cable gland and wire according to pin
assignment (Fig. 3.3).
(+ and - according to transistor signal output)
1: Current output 4...20 mA
2: L+ (12...30 VDC)
3: L- (GND)
4: Earth (earth lug)
5: Output 1
Base
6: Output 1
Base
7: Output 2
Acid
8: Output 2
Acid
9: Relay Alarm
10:
Relay Alarm
E-14-
8205
pH CONTROLLER 8205
Fig 3.6 Electronic card type 8205 panel
3 INSTALLATION
Note: PLC-connection, depending on the
PLC-version, the switch on the circuit
board must be set in position A or B (see
Fig. 3.5 and 3.6).
Fig 3.7 Connection card pH controller type 8205 panel
Sensor connection:
Pulse Output
relay (standard)
or triac
or transistor
3.2.3 pH controller type 8205 panel
The electrical wiring ensues via 2 cable
glands.
Remove the cover, pull the cable through
the cable gland and wire according to pin
assignment (Fig. 3.6).
(+ and - according to transistor signal output)
1: Current output 4...20 mA
2: L+ (12...30 VDC)
3: L- (GND)
4: Earth (earth lug)
5: Output 1
Base
6: Output 1
Base
7: Output 2
Acid
8: Output 2
Acid
9: Relay Alarm
10:
Relay Alarm
Pt1000
blue
white
brown
black
8205
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