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Manual OPTISENS PAC 050

15

OPTISENS PAC 050

4.1.1

Measurement

Configuration

pH/Redox
Measurement

pH/Redox
Measurement

pH/Redox
Measurement

Displayed is always the actual active configuration. With key

you can switch from pH measurement to ORP

measurement. Press the key again to go back to the original setting.

4.2

pH measurement

pH measurement requires a calibration.

By means of calibration the electrode’s characteristics are determined and stored. The procedure is a
subsequent measurement of two solutions with a known pH. The pH values of the buffers used as calibration

solutions are stored in the menu basic settings.

You have to adjust the calibration data only if you want to use special calibration solutions or electrodes with
a special buffer solution.

The electrode’s slope is influenced by temperature. This influence can be compensated by manual or

automatic compensation. Manual compensation means that the temperature is entered manually. Automatic
compensation requires measuring the temperature with a Pt100 or Pt1000.

4.3

ORP measurement

ORP measurements do not require calibration or temperature compensation. Therefore the parameters
„calibration“ and „temperature compensation“ do not appear in the menu if ORP measurement has been

selected.

NOTE

The ORP measurement needs no calibration and no compensation for temperature effects. Therefore these
parameters do not appear in the menu if ORP measurement is selected.

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Содержание OPTISENS AC 050 pH/ORP P

Страница 1: ...07 2008 Installation and Operating Instructions OPTISENS PAC 050 Measuring and control device for pH and ORP measurements ...

Страница 2: ... 14 4 1 1 Measurement 15 4 2 pH measurement 15 4 3 ORP measurement 15 4 4 Calibration 16 4 4 1 Calibration procedure 16 4 4 2 Buffers 16 4 5 Temperature compensation 17 4 5 1 Calibration of the temperature measurement 17 5 Adjustments of the controller 17 5 1 ON OFF controller 18 5 2 P PI controller as impulse frequency controller 19 5 3 P PI controller as pulse pause controller 19 5 4 Activation ...

Страница 3: ... PAC 050 3 OPTISENS PAC 050 9 Technical data 27 9 1 Technical data 27 9 2 Dimensions 28 9 2 1 Panel mounting enclosure 28 9 2 2 Wall mounting enclosure 28 10 Device return form 29 11 Customer settings for reference 30 ...

Страница 4: ...s of Sale and Delivery found on the back of the invoice and forming the basis of the purchasing contract are applicable General limitation on liability Unless otherwise expressly set forth in the Standard Terms and Conditions of Sale and Delivery the Seller is only liable for damages whatever their legal basis is in case they are based on willful action or gross negligence This limitation on liabi...

Страница 5: ... safe usage follow all instructions carefully and pay special attention to all warnings issued in this manual If the device is visibly damaged or has been stored inappropriately or if there are any doubts concerning safe usage shut it down and make sure it cannot be restarted by accident 0 3 1 Documentation symbols A set of symbols is used to give warnings or information relevant to particular app...

Страница 6: ... controller as Pulse Pause Impulse Frequency or steady controller Hysteresis 0 00 14 00 pH or 0 1500 mV P range XP 0 00 14 00 pH or 0 1500 mV Integral time TN 0 2000 s Least pulse 0 1 9 9 s Pulse pause time 02 99 s Impulse frequency 00 72 equiv to 0 7200 pulses h Turn on delay 0 200 s Alarm function min and max limit and onset delay power failure alarm impulse or permanent signal Dosage control 0 ...

Страница 7: ...or by sliding the slot under a screw which is an alternative for limited space Either way you have to fix it additionally with two screws ATTENTION Install the device in a place where it is not put under mechanical or chemical strain Mind the protection class Panel mounting version IP 54 front IP 30 Housing Wall mounting version IP 65 closed terminal cover 1 1 Installation of panel mounting conver...

Страница 8: ... upon the upper screw In that case drill the upper hole 120mm 4 7 above the lower two 2 Or you can slip the fixture on the back of the device under the upper screw In that case the upper hole has to be another 15mm 0 6 higher Insert the upper screw and make sure to leave at least 3 mm between wall and screw head for the fixture Mount the device and fix it with the two lower screws Close the termin...

Страница 9: ...one side only The pH measurement is interference sensitive Use a special screened cable and over long distances or in humid atmosphere additionally an impedance converter When using the relays mind that with inductive loads interference must be suppressed If that is not possible the relay must be protected at the terminal block in the converter by a resistance capacitance filter or in case of dire...

Страница 10: ...lectrode screen Measurement brown white 1 brown 2 white Supplied voltage yellow green Impedance converter 1 4 3 yellow 6V 4 green 6V Pt 100 5 6 Analog output 9 10 9 10 max burden 500 Ohm Digital input 11 12 11 12 External controller stop or lack of water ind Relay 1 14 15 Relay 2 16 17 Relay 3 18 19 Alarm relay Power supply 21 22 23 check information given on instrument label RS485 option Sub D Su...

Страница 11: ...easurement brown white 1 brown 2 white Supplied voltage yellow green Impedance converter 1 4 3 yellow 6V 4 green 6V Pt 100 6 7 Display contrast Display Potentiometer to adjust the display contrast Analog output 11 12 11 12 max burden 500 Ohm Relay 1 14 15 Relay 2 16 17 Relay 3 18 19 Alarm relay Power supply 20 21 22 check information given on instrument label RS 485 option 23 24 23 1 24 Digital in...

Страница 12: ...oring With key Enter changes are stored For your convenience triangles in the display indicate the directions you can take from your position in the menu 3 1 How to adjust parameters Temp comp Manual 1 When you address a parameter the actual setting is displayed 2 Switch to the next alternative setting with key Temp comp Auto Temp comp Manual 3 When you have come to the last alternative pressing t...

Страница 13: ...easurements Temp comp Temperature compensation only for pH measurements Enter password Password function Set points Controller settings set points P ranges I functions Limit values Alarm function Basic settings Basic settings Cal Pt 100 Service Buffers used Contr Settings Turn on delay Analog outputs Language Bus address pH ORP All parameters which are set just once at the beginning can be found i...

Страница 14: ...3 3 2 Language For the communication with the device you can choose from a variety of languages Since choosing a language is part of the basic settings it requires code 86 If a different code is set you will be asked to enter the correct password 4 Adjustments for the measurement Main menu Calibrate Calibration of the pH measurement display of slope and zero point Temp comp Selection between autom...

Страница 15: ... settings You have to adjust the calibration data only if you want to use special calibration solutions or electrodes with a special buffer solution The electrode s slope is influenced by temperature This influence can be compensated by manual or automatic compensation Manual compensation means that the temperature is entered manually Automatic compensation requires measuring the temperature with ...

Страница 16: ...inse the electrode and repeat step 2 with the second calibration solution 4 Check the slope and sensor zero point then put the electrode back into the armature Select automatic temperature compensation and switch ON the controller NOTE The slope should be close to 59 mV pH the zero point close to 0 mV The slope decreases and the zero error increases with time When either value exceeds certain limi...

Страница 17: ...tinuously The device will then compensate the temperature error of this temperature 4 5 1 Calibration of the temperature measurement If you connect the temperature sensor with a twin core cable slight deviations might occur between measured and real temperature These deviations can be eliminated by calibration During start up measure the temperature manually and enter a correction term so that the...

Страница 18: ...ters are the same as for a P controller Additionally the integral action time has to be adjusted which determines the I function The I function eliminates the P controller s disadvantage of a remaining steady state deviation 5 1 ON OFF controller Main menu Set points and controller version Set points Set point S1 You can choose different 7 50 pH controller versions for S1 P range S1 and S2 0 20 pH...

Страница 19: ... a P range 0 For a P controller set integral time 0 for a PI controller set an integral time 0 3 The acting direction for S1 and S2 Select raise if the dosage raises the measured value Select lower if the dosage lowers the measured value 4 Pulse frequencies for S1 and S2 Enter the maximum pulse frequency that corresponds to 100 dosage 5 3 P PI controller as pulse pause controller Main menu Set poi...

Страница 20: ...ctivation of the controller The controller is activated and deactivated from the main display without any menus Press key to switch from Manual Mode controller OFF to Automatic Mode controller ON and vice versa The actual mode is indicated in the display WARNING Make sure that the controller is deactivated before connecting dosing pumps or other actuators Main menu Basic settings Basic settings Tu...

Страница 21: ...sh 6 99 pH 25 0 C F S1 J S2 Man 6 Switch ON relay 2 with key The square to the left of S2 gets dark 6 99 pH 25 0 C F S1 S2 Man 7 Switch OFF relay 2 again with key The square gets light 6 99 pH 25 0 C F S1 F S2 Man 8 Leave the operation mode of relay 2 with key Both squares appear light none flashes You have left the operation mode For manual operation you need no menu With key you switch OFF the c...

Страница 22: ...ssued under these circumstances you can adjust a turn on delay which has to pass before an alarm is issued If the turn on delay time is 0 then the alarm is issued only if the cause of alarm remains longer than the specified turn on delay time 5 9 Dosage check Main menu Basic settings Basic settings Controller settings Contr settings Dosage check S1 00 min Dosage check S2 00 min In the basic settin...

Страница 23: ...an alarm is issued and the controller deactivated Alarm and controller stop remain until the analog input receives correct signals again Sensor check during measurement During measurement all connected sensors are checked If an analog input does not receive a correct signal for e g if a cable is broken or a sensor damaged an alarm is issued and the controller deactivated Alarm and controller stop ...

Страница 24: ...the cable and the sensor for signs of damage Error input 2 The temperature sensor gives no signal Please check the connections the cable and the sensor for signs of damage This message also appears if automatic temperature compensation was selected although no temperature sensor was used Limit 1 2 The measured value exceeded limit 1 or dropped below limit 2 respectively Please check the dosing and...

Страница 25: ...adjustment If you want to have the device checked regularly you are welcome to send it to KROHNE Water Solutions Alternatively the device can be checked on site by one of our engineers 8 2 Display contrast With devices in wall mounting enclosures the display contrast can be adjusted to the actual light conditions by means of a potentiometer It is indicated in the connection diagram with the word d...

Страница 26: ... inputs Analog inputs Input 1 003 Analog inputs Input 2 25 0 C Erase settings Erase settings Press In this menu you will find information which is especially important for any inquiries updates or problems 8 7 1 Product info These figures allow a precise identification of the device hardware and software 8 7 2 Analog inputs Here you can see the raw data the device obtains from the sensors They are...

Страница 27: ...d value and temperature with dimensions indication of relay status Current output 0 4 20 mA galvanically isolated max burden 500 Ohm Interface option RS485 Baud rate 9600 data format 8 Bit 1 Start and 1 Stop bit Controller ON OFF controller with hysteresis P or PI controller as Pulse Pause or Impulse frequency controller steady controller bidirectional PI control action adjustable onset delay dosa...

Страница 28: ...Manual OPTISENS PAC 050 OPTISENS PAC 050 28 9 2 Dimensions 9 2 1 Panel mounting enclosure 9 2 2 Wall mounting enclosure ...

Страница 29: ...nfirming that the device is safe to handle 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 neutralizing 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 We cannot service t...

Страница 30: ... 0 20mA F 4 20mA for F pH ORP F Controller S1 F Controller S2 Start End Controller Controller S1 Controller S2 Acting direction Acting direction F raise F lower F raise F lower Set point Set point Hysteresis Hysteresis P range P range Integral time s Integral time s Pulse pause time s Pulse pause time s Minimum pulse s Minimum pulse s Pulse frequency 100 h Pulse frequency 100 h Turn on delay Delay...

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