Table of Contents
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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
426493C
8205
pH CONTROLLER 8205
E-1-
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Summary of Contents for Burkert 8205
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Page 1: Table Of Contents
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 OPERATION ........................E-16 Controller Operating and Control Elements .............. -
Page 2: Introduction
1.3 User's Responsibility for Safety Dear Customer, Congratulations on your purchase of our Bürkert manufactures a broad range of pH digital pH controller type 8205 . controllers (compact, wall-mounted or panel versions). While each of these products is BEFORE INSTALLING OR USING THIS... -
Page 3: Specification
2 SPECIFICATION pH CONTROLLER 8205 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... -
Page 4: Design And Measuring Principle
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. 2.3 Design and Measuring Principle Design pH controller type 8205 separate pH controller type 8205 compact... - Page 5 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...
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Page 6: Dimensions
2 SPECIFICATION pH CONTROLLER 8205 2.4 Dimensions of the pH controller type 8205 compact PG 13,5 G 1/2" Version: Version: "NORTH AMERICA" "STANDARD WORLWIDE" See § 2.1 See § 2.1 Fig. 2.3 Dimensions pH controller type 8205 compact 8205 E-6-... - Page 7 2 SPECIFICATION pH CONTROLLER 8205 Fig 2.4 Dimensions pH controller type 8205 panel version covering strip covering strip + 1 cable gland reducer Fig 2.5 Dimensions pH controller type 8205 wall-mounted version 8205 E-7-...
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Page 8: Technical Data
2 SPECIFICATION pH CONTROLLER 8205 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 %... - Page 9 2 SPECIFICATION pH CONTROLLER 8205 2.5.2 pH controller type 8205 separate version specification mbient 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) ;...
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Page 10: Installation
3.1. 2. Insert plastic nut into fitting, and let plastic ring snap into guide bush 3.1.2 Compact controller type 8205 3. Carefully insert the pH controller into installation the fitting. If installed properly, the controller cannot be rotated. - Page 11 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 Front panel Fig 3.2 Installation pH controller type 8205 panel version 8205 E-11-...
- Page 12 Switch for power 125 mA T supply selection 230/115 VAC Fig 3.3 Installation pH controller type 8205 wall-mounted version 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.
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Page 13: Electrical Wiring
8: Output 2 9: Relay Alarm 10: Relay Alarm Fig. 3.4 Pin assignment of 8205 compact 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). - Page 14 Fig 3.6 Electronic card type 8205 panel PLC-version, the switch on the circuit board must be set in position A or B (see Fig. 3.5 and 3.6). Sensor connection: Pt1000 blue 8205 white brown black Fig 3.7 Connection card pH controller type 8205 panel 8205 E-14-...
- Page 15 3 INSTALLATION pH CONTROLLER 8205 3.2.4 Electrical wiring 8205 wall-mounted 12-30 VDC Open the cover to access to the terminals. Wire according to the following figure. Pt1000 RELAY SPARE POWER 12/30VCC Fig 3.8 12..30 VDC Power supply 3.2.5 Electrical wiring 8205 wall-mounted 115-230 VAC Open the cover to access to the terminals.
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Page 16: Operation
4 OPERATION pH CONTROLLER 8205 The operation of the pH controller is classified according to 3 levels. Main Menu pH, temperature, output current, setpoint and working rates are displayed in the normal function mode. The "HOLD" function and electrode calibration function ("PH CALIB") can be accessed in this menu. -
Page 17: Operation Mode Display
4 OPERATION pH CONTROLLER 8205 4.2 Operation Mode Display The following process values are displayed in the display operation mode. PH = 12.60 ENTER pH with two decimals. Press to display the working rates control function. Temperature in °C or °F. -
Page 18: Hold Function
4 OPERATION pH CONTROLLER 8205 4.2.2 HOLD function A continuous 4-20 mA output corresponding to the last value measured before this option was entered is generated. The relays are blocked in their last state. This allows the electrode to be cleaned without interruption of the process. The display in the operation mode is flashing and there is no access to the parameter definition or the test menu, as long as the HOLD-function is activated. - Page 19 4 OPERATION pH CONTROLLER 8205 PH CALIB 1 POINT PH = 7.00 ENTER ENTER Press Enter fo 5 sec. Immerse electrode in ENTER buffer solution and confirm CALIB . . . Automatic confirmation ENTER (approx. 20 s.) or press ENTER PH = 9.25...
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Page 20: Calibration Mode
4 OPERATION pH CONTROLLER 8205 ENTER 4.3 Calibration Mode: Press simultaneously for 5 seconds The following adjustments are set in the calibration mode display: LANGUAGE English, German, French, Italian, or Spanish choice. T° UNIT Temperature unit selection (°C; °F). CURRENT Adjustment of the 4...20 mA measuring range (pH or T°). -
Page 21: Temperature Units
4 OPERATION pH CONTROLLER 8205 4.3.2 Temperature units The temperature can be displayed in °Celsius or in °Fahrenheit. °CELSIUS ENTER T° UNIT °FAHRENH ENTER CURRENT 4.3.3 Output Current Enter the measuring range corresponding to the 4...20 mA output. First select the unit pH or T°current then, enter the limit values . -
Page 22: Output Signal 1
4 OPERATION pH CONTROLLER 8205 4.3.4 Output 1 (Base) Select the controller output 1 logic signal. Impulse time selection (PULSE 1) Set the duration of each impulse and the maximum frequency of the output signal. Impulse frequency selection (PWM1) Set the frequency of the logic output signal activation. -
Page 23: Output Signal 2
4 OPERATION pH CONTROLLER 8205 4.3.5 Output 2 (Acid) Select the controller output 2 logic signal. Impulse time selection (PULSE 2) Set the duration of each impulse and the maximum frequency of the output signal. Impulse frequency selection (PWM2) Set the frequency of the logic output signal activation. -
Page 24: Setpoint Adjustment
4 OPERATION pH CONTROLLER 8205 4.3.6 Setpoint Adjustment Select the pH curve setpoints. L1<L2 and S1<=S2 (1) Limit 1 (L1) Set the low bow of the pH curve. Setpoint 1 (S1) Set low limit of the pH regulation curve Setpoint 2 (S2) Set the high limit of the pH regulation curve. -
Page 25: Control Mode Selection
4 OPERATION pH CONTROLLER 8205 4.3.7 Control Mode Selection of Control Mode (static or dynamic) and corresponding calculation parameters for P; PI; or PID functions (Pleas refr to appendix A1). BASE CONTRL1 ENTER CONTROLL ENTER STATIC ACID CONTRL2 KP1 = 1.00 0..9... -
Page 26: Alarm Threshold Selection
4 OPERATION pH CONTROLLER 8205 4.3.8 Alarm Threshold Selection 2 thresholds are set for the relay Alarm: MIN and MAX. Options to invert the relays and set a delay between 0 and 999 seconds are available. The delay prevents the relay from too fast activation, e.g. -
Page 27: Hand Display Selection
4 OPERATION pH CONTROLLER 8205 4.3.9 Hand Display Selection Select the Hand display mode to allow the manual entry of percentages values of base and acid outputs. ENTER HAND ENTER SENSOR T° 4.3.10 Temperature CompensationMode If the Pt1000 is not used for temperature acquisition, select SENSOR NO and enter the temperature of the fluid. -
Page 28: Filter Function
4 OPERATION pH CONTROLLER 8205 4.3.11 Filter Function The damping is set in this sub-menu, which prevents display and output current fluctuations. There are 10 steps available. However, the first step ("FILTER 0") has no damping function. FILTER 0 FILTER ENTER 0..9... -
Page 29: Offset-Compensation
CONTROLLER 8205 4 OPERATION 4.4.1 Offset-Compensation In order to check and modify the basic setting of 4 mA, connect an ammeter in the output circuit. Press ENTER when "OFFSET" is displayed, the controller generates 4 mA. If the measured value is different from 4 mA, enter the measured value as offset value. -
Page 30: Ph Simulation
4 OPERATION pH CONTROLLER 8205 4.4.4 pH Simulation A pH (or T°) value can be simulated in this menu, allowing the user to test his system without any liquid. The simulated value influences the current and pulse outputs and the alarm relay. -
Page 31: Maintenance
5 MAINTENANCE pH CONTROLLER 8205 1. Disconnect supply voltage and make sure that there is no pressure on pipe or tank. 2.Remove the controller from the pipe or submersion assembly. 3.Unscrew the cover and open it slightly. 4.Pull out connectors 5.Pull sensor assembly... -
Page 32: Error Messages
Power failure: In case of power failure, the display turns off, 4-20 mA and pulse output to 0, alarm relays open. When the power supply is turned on , the controller is set to the previous configuration and the measure goes on. 5.4 Factory-setting of pH controller type 8205 at delivery Language: English... -
Page 33: Spare Parts List
5 MAINTENANCE pH CONTROLLER 8205 5.5 Spare Parts List pH controller type 8205 5.5.1 Spare Parts pH controller type 8205 compact Position Specification Order-No. Complete sensor housing with ring, union nut 425526B and two flat seals. Cover with screws, sheeting and printed circuit board Controller with relay output, software. - Page 34 5 MAINTENANCE pH CONTROLLER 8205 Fig. 5.2 Spare parts explosion drawing pH controller type 8205 compact version 8205 E-34-...
- Page 35 Cover with screws, front panel and electronic card with transistors, 426492B and software. Gasket 419350Q Protective plate 427100X Mounting accessories (screws, lockwashers, spacer bolts, cable clips) 418388A Instruction manual 426493C Panel Fig 5.3 Spare parts explosion drawing pH controller type 8205 panel version 8205 E-35-...
- Page 36 426989M Power card 12...30 VDC 426976P Power card 230/115 VAC 426975N Connection cable between power card and electronic card 420403Y Complete IP65 enclosure 418389B Instruction manual 426493C Fig 5.4 Spare Parts Explosion Drawing pH controller type 8205 wall-mounted 8205 E-36-...
- Page 37 APPENDIX pH CONTROLLER 8205 A1: Characteristics of PID controllers A PID controller has a proportional, an integral and a differential component (P, I and D components). P component : Function : Y = Kp • Xd Kp is the proportional action coefficient. It results from the ratio of the manipulating range ∆Y to the proportional range ∆Xd.
- Page 38 APPENDIX pH CONTROLLER 8205 Ymax ∆ range Ymin Control range Manipulating time Characteristic Step response Characteristics : A pure I controller eliminates the effects of occuring disturbances completely. Therefore, it has a favorable static response. Owing to its finite manipulating speed, it operates more slowly than the P controller and tends to oscillate.
- Page 39 APPENDIX pH CONTROLLER 8205 Supperposition of P-, I- and D components: d Xd Y = Kp Xd + ƒ Xd dt + Kd = Tv, results with regard to functioning of the PID controller: Where Kp•Ti = Tn and d Xd Y = Kp (Xd + ƒ...
- Page 40 APPENDIX pH CONTROLLER 8205 A2: Rules for adjusting PID controllers The litterature on control systems specifies a series of adjustment rules with which a favorable adjustment of controller parameters can be achieved experimentally. To avoid bad adjustments, the conditions under which the respective adjustment rules have been elaborated must always be observed.
- Page 41 APPENDIX pH CONTROLLER 8205 On the basis of Kcrit and Tcrit, the controller parameters can then be calculated in accordance with the following table: Parameter settings according to Ziegler und Nichols : Controller type Parameter settings P controller Kp = 0,5 Kcrit...
- Page 42 CONTROLLER 8205 APPENDIX The following table lists the settings for the controller parameters depending on Tu, Tg and Ks for command and disturbance response and for an aperiodic control operation as well as a control operation with 20% overshoot. They apply to systems with a P response, with a dead time and with a delay of the 1st order.
- Page 43 SERVICE Australia Bürkert Contromatic Niederlassung Dresden Burkert Fluid Control Systems China/HK Ltd. Christian Bürkert Straße 2 Unit 1 No.2, Welder Road Guangzhou Representative Office D-01900 Großröhrsdorf Seven Hills NSW 2147 Rm. 1305, Tower 2 Tel +49 35952 3 63 00...
- Page 44 Tel +48 (0) 22 827 29 00 Turkey Fax +48 (0) 22 627 47 20 Bürkert Contromatik Akiskan Kontrol Sistemleri Ticaret Singapore Burkert Contromatic Singapore Pte.Ltd. 1203/8 Sok. No. 2-E No.11 Playfair Road Yenisehir Singapore 367986 Izmir Tel +65 383 26 12...
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