HI 23 / HI 24 Series
Contents
1. crm After confirmation the selected parameter is displayed The user can scroll through the parameters by pressing CFM In order to directly set another param eter press SETUP again and enter the cr code or scroll to it by pressing CFM 4 Note Note no yes yes yes yes yes yes Default 4800 0 0000 Valid Values 1200 2400 4800 9600 0 to 19999 days 01103 01 to 12 1998 to 9999 00 00 to 23 59 0 to 19999 minutes 0 off 0 off 0 off 0 off 0 off 0000 to 9999 Code Baud rate Cleaning timer cleaning day cleaning month nitial cleaning year nitial cleaning time Cleaning ON interval Display selftest 1 on Keyboard selftest 1 EEPROM selftest 1 on Relays and LEDs selftest 1 on Watchdog selftest 1 on Unlock password 72 73 74 15 76 7 90 92 93 94 99 The process controller automatically checks to ensure that the entered data matches other related variables If a wrong configuration is entered ERROR blinks on the LCD to prompt the user The correct configurations are the follow ing If M140 then S10 HA S10 LA If M240 then 520 HA 52 LA If M1 1 then S1 H10 LA If M1 2 then S1 H10 HA If M1 3 then 1 D10 HA If M1 4 then S1 D10 LA Note PW no no no no no no no Default 0 195 19652. ile t gt ile P t 1 4 3 2 6 JE HIE fa HIE t 1 2 EY a C5 nti a instruments HI 23 HI 24 Series Wall mounted Microprocessor based Conductivity and TDS Process Controllers Instruction Manual TABLE OF CONTENTS PRELIMINARY EXAMINATION ee 4 GENERAL DESCRIPTION 4 ii peret eri et ete onere tet 4 MAIN FEATURES OF DIFFERENT MODELS 5 FUNCTIONAL DESCRIPTION 7 MECHANICAL DIMENSIONS eene 9 SPECIFICATIONS accio tote 10 INS TAEEATI OIN 0005 11 SETUP MODE 14 CONTROL 21 IDLE mo RERO KRENN NNNSN 29 ANALOG OUTPUT 30 e am 32 LAST CALIBRATION DATA 40 FAULT CONDITIONS AND SELFTEST PROCEDURES 4 EXTERNAL FUNCTIONS 45 RS 485 46 STARTUP 53 EC VALUES AT VARIOUS TEMPERATURES 54 EC TDS PROBE MAINTENANCE 55 ACCESSORIES ara S RUE PEE 56 58 CE DECLARATION OF CONFORMITY 59 2001 Hanna Instruments All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Dear Customer Thank you
3. graphic Ec low rate So N EN proper rate senting gt RATE ACTION COMPENSATES FOR RAPID CHANGES t PID TRANSFER FUNCTION The transfer function of a PID control is as follows Kp Ki s s Kd Kp 1 1 s Ti s Td with Ti Kp Ki Td Kd Kp DAC SP 0 4 K out PWM to relays D EC or TDS input where the first term represents the proportional action the 24 The user can vary five different parameters i e the setpoint 4 The deviation Ti and Td can be calculated from the following 51 or S2 the deviation D1 or D2 the reset time the rate Deviation Tx mox slope EC TDS time and the proportional control mode period T from 1 Cite qub minded to 30 minutes Td Tx 0 4 minutes Note User can disable the derivative and or integrative action _ 5 Set the above parameters and restart the system with the for P or PI controllers by setting Td O and or Ti MAX controller in the loop If the response has too much over Ti respectively through the setup procedure HI resp y g shoot or is oscillating then the system can fine tuned SIMPLE TUNING PROCEDURE slightly increasing or decreasing the PID parameters one The following procedure uses a graphical technique of ana at a time lyzing a process response curve to a step input Note Connecting an external device e g chart recorde
4. Two further parameters must be provided for both setpoints Ti Kp Ki reset time measured in minutes Td Kd Kp rate time measured in minutes Til and Td1 will be the reset time and rate time for setpoint while Ti2 and Td2 will be the reset time and the rate time for setpoint2 TUNING A PID CONTROLLER The proportional integrative derivative terms must be tuned i e adjusted to a particular process Since the process vari ables are not typically known a trial and error tuning procedure must be applied to get the best possible control for the particular process The target is to achieve a fast response time and a small overshoot Many tuning procedures are available and can be applied to the EC TDS controllers A simple and profitable proce dure is reported in this manual and can be used in almost all applications 25 The derivative function rate action compensates for rapid changes in the system reducing undershoot and overshoot of the EC or TDS value During PID control the ON interval is dependent not only on the error amplitude but even on the previous measurements Definitely PID control provides more accurate and stable control than ON OFF controllers and it is best suitable in system with fast response quickly reacting to changes due to addition of low or high conductivity solution An example of how the response overshoot can be improved with a proper rate action setting is depicted in the following
5. relay setpoint UuS mS ppm value relay hysteresis uS mS ppm value Connect your device to the COM and NO Normally Open or NC Normally Closed terminals The ON relay state occurs when relay is energized NO and COM connected NC and COM disconnected The OFF relay state occurs when relay is de energized NO and COM disconnected NC and COM connected The following graphs show relay states along with EC mea sured value similar graph can be derived for TDS control As shown below a high setpoint relay is activated when the measured EC exceeds the setpoint and is deactivated when it is below the setpoint value minus hysteresis ON OFF gt Setpoint Setpoint EC Hysteresis Such a behavior is suitable to control a high conductivity dosing pump A low setpoint relay as can be seen trom the following graphs is energized when the EC value is below the setpoint and is 22 second is the integrative action and the third is the deriva tive action Proportional action can be set by means of the Proportional Band PB Proportional Band is expressed in percentage of the input range and is related to Kp according to the follow ing Controller output Proportional Band Kp 100 PB The proportional action is set through the setup procedure as Deviation in percent of full scale of the selected range Each setpoint has a selectable deviation D1 for setpoint and D2 for setpoint2
6. 4 mA 30 mS and 20 mA 50 mS To change the default values the setup mode must be en tered Setup codes for changing the analog output minimum Current and maximum are 41 or 42 respectively For the exact pro cedure refer to the setup mode section in the manual Pin 5 is the voltage output pin 6 is the analog output common and pin 7 is the current output Voltage Commor With the recorder simply connect the common port to the common output and the second port to the current out put or voltage output depending on Note The analog output is factory calibrated through software The which parameter is being used as de user may also perform the calibration procedure as explained picted aside in the following It is recommended to perform the output calibration at least once a year Note Analog output resolution is 1 596o f s with 0 5 f s accu racy Note The analog output is frozen when entering the setup or calibration mode after password confirmation 30 31 To obtain accurate readings use the calibration solution in the selected range and closer to the values to be mea sured To perform the EC or TDS calibration en terthe calibration mode by pressing CAL 4 and entering the password After the correct password is entered the control actions stop and the pri mary LCD will display the first EC or TDS calibration value with the CAL indicator blinking The secondary LCD disp
7. The keyboard selftest procedure begins with the message But ton test press LCD CAL and SETUP together to escape The LCD will then show only a colon butt DISPLAY SELFTEST KEYBOARD SELFTEST 42 When a dead loop condition is detected a reset is auto matically invoked The effectiveness of watchdog capability can be tested through one of the special setup items This test consists of executing a dummy dead loop that causes watchdog reset signal to be generated WATCHDOG EXTERNAL FUNCTIONS This function allows to perform the mainte nance procedures When the relevant digital insulated input terminals 11 on page 8 is on analog output is frozen at its last value and the control and alarm relays are dis abled The Hid indication is displayed on the secondary LCD when the function is active A 5 to 24 VDC voltage can be applied to this input While in hold state it is possible to display the temperature reading on the secondary H LCD pressing the right arrow key Onlywhen 7 the key is released the secondary LCD re 7 turns automatically after a few seconds to the Hld indication HOLD FUNCTION PRESETTABLE TIMER CLEANING FUNCTION A timer is presettable by software to closea Timer digital insulated contact terminals 12 on page 8 after a user programmable time in terval with a minimum interval of 1 day e g for probe cleaning function The time inter
8. val is programmable in number of days through setup code 72 This output is ON for the period set through setup code 77 this period can be also changed when the output is ON 18 e 19J S The starting time of the cleaning timer can be set through setup codes 73 74 75 and 76 45 The EEPROM selftest procedure involves verifying the stored EEPROM checksum If the checksum is correct the Stored data good message will be shown for a few seconds be fore exiting selftest procedure Stor If not the message Stored data error Press 0 to reset stored data or 0 to ignore If D is pressed the EEPROM selftest procedure terminates with no other action Otherwise EEPROM is reset with de Stor fault values from ROM as when a device with a virgin EE PROM is switched on During EEPROM reset a blinking message Set is shown on primary LCD the sec ondary LCD displays MEM At the end of this operation all the param eters are reset to their default values The calibrated cell constant is also reset For this reason the CAL flag blinks until the EC TDS calibration is pertormed Relays and LEDs selftests are executed as follows First all of the relays and LEDs are switched off then they are switched on one at a time for a few seconds and cyclically User can interrupt the otherwise endless cycle pressing any key as indicated by the scrolling message PrES Relays and LEDs test has to be carried out
9. 9999 0 0 9506 f s Valid Values same as relay 1 0 5 to 99 5 full scale 0 to 5 f s 0 5 to 10 f s 0 1 to 999 9 minutes 0 0 to 999 9 minutes 0 5 to 99 5 full scale HA HysL LA Hys Hys 1 5 f s HAL 51 or HAL S2 no 5 f s 0 5 to 99 5 full scale LA HysL HA Hys Hys 1 596 s LAU 51 or AL S2 no no no no no no no no no 5 10 00 00 2 0 0 VARMIN 0 VARMAX 5 f s 100 fs 0 VARMIN 0 VARMAX 5 f s from RTC from RTC from RTC from RTC to 30 min Code Relay 2 mode M2 Relay 2 setpoint 52 Relay 2 hysteresis H2 Relay 2 deviation D2 Relay 2 reset time Relay 2 rate time Alarm relay 2 22 23 24 25 26 30 High Alarm HA Alarm relay 4 Low Alarm LA Proportional control mode period 32 33 Maximum relay ON time 1 to 10 min after which an alarm mode is entered 00 00 to 30 00 0 0 1mA 1 0 20 mA 2 4 20 mA 3 0 5 VDC 4 1 5 VDC 5 0 10 VDC to 100 full scale c to 100 full scale c 01 to 31 01 to 12 1998 to 9999 00 00 to 23 59 Alarm mask time Analog output selection Analog output 34 40 4 lower limit 0 VARMIN Analog output 42 upper limit 0 VARMAX Current day Current month Current year Current time 60 0 0 8 CONTROL MODE The control mode is the norm
10. 1 5 VDC 4 1 VDC 5 VDC 0 10 VDC 5 10 VDC Press CFM to confirm the selected parameter that will stop blinking on the primary display The secondary display shows the HI 931002 or multimeter input value as lower limit of the interval Use the 0 or 1 to make the 931002 or multimeter output cor wW respond to the meter s value 7 Z dr shown on the secondary display 7 e g 4 Wait for approximately 30 seconds until the reading of the calibrator is stable Press CFM to confirm The meter will switch to the second calibration point Repeat the above procedure Atter the desired readings are obtained press CFM and the meter will skip back to normal operational mode 39 Press CFM to confirm The meter will return to normal op erational mode Calibration procedure may be interrupted by pressing CAL again at any time If the calibration procedure is stopped this way or if the controller is switched off before the last step no calibration data is stored in nonvolatile memory EE PROM ANALOG OUTPUT CALIBRATION In the models where the analog output is available this fea ture is factory calibrated through software The user may also perform these calibration procedures It is recommended to perform the output calibration at least once a year Calibration should only be performed after 10 minutes from power up With a multimeter or an HI 931002 connect the common port to th
11. 20 C or 25 C 0 00 to 10 00 C 0 conductivity probe 1 4 20 mA input signal ATC Automatic User Manual 0 00 to 1 00 0 disabled 1 ON OFF high setpoint 2 ON OFF low setpoint 3 PID high setpoint 4 PID low setpoint 0 5 to 99 5 full scale 0 to 5 f s 0 5 to 10 f s 0 1 to 999 9 minutes 0 0 to 999 9 minutes 3 0 00 19 99 mS or 10 00 ppt 4 0 0 199 9 mS or 100 0 ppt Reference Temperature Temperature Coefficient nput Selection Temperature compensation TDS Factor Relay 1 mode Relay 1 setpoint S1 Relay 1 hysteresis Relay 1 deviation D1 Relay 1 reset time Relay 1 rate time 04 05 06 07 08 SETUP CODES The default password is set at OOOO The LCD will display SET on the up per part and 6 00 on the lower al lowing the user to edit setup param eters see table below 5EE 00 Using the arrow keys as for above password dure enter the code of the parameter to set e g 41 Confirm the code by pressing CFM and the default or the previously memorized value will be displayed with the first digit blinking When the password is not inserted or a wrong password is confirmed the display will only show the previously memo rized value without blinking read only mode In this case the value cannot be set Press LCD and start again Enterthe desired value using the arrow keys and then press CFM
12. designed to eliminate the cycling associated with ON OFF control in a rapid and steady way by means of the combination of the proportional integral and de rivative control methods With the proportional function the duration of the activated control is proportional to the error value Duty Cycle Con trol Mode as the measurement approaches setpoint the ON period diminishes The following graph describes the EC TDS process control ler behavior Similar graph may apply to the controller f ht T Dr During proportional control the process controller calculates the relay activation time at certain moments tx etc The ON interval the shaded areas is then dependent on the error amplitude With the integral function default the controller will reach a more stable output around the setpoint providing a more accurate control than with the ON OFF or proportional action only 23 An upper boundary is imposed for dosage time when relays are energized continuously i e when relay works in ON OFF mode or also in PID mode but in the latter case only if the relay is always ON This parameter can be set through the setup procedure When the maximum boundary is reached an alarm is generated the device stays in alarm condition until relay is de energized ON OFF CONTROL MODE Either for mode 1 or 2 high or low conductivity dosage the user has to define the following values through setup NO COM NC
13. for choosing a Hanna Product This instruction manual refers to the following products EC controller with dual setpoint ON OFF control and analog output EC controller with dual setpoint ON OFF control and RS 485 port EC controller with dual setpoint ON OFF and PID control and analog output EC controller with dual setpoint ON OFF and PID control and RS 485 port EC and TDS controller with dual setpoint ON OFF control and analog output EC and TDS controller with dual setpoint ON OFF control and RS 485 output EC and TDS controller with dual setpoint ON OFF and PID control and analog out put EC and TDS controller with dual setpoint ON OFF and PID control and RS 485 port 1 for models with 115 Vac power supply 2 for models with 230 Vac power supply 6 23212 0 23221 0 23222 0 HI 24211 0 24212 0 24221 0 24222 0 Please read this instruction manual carefully before using the instrument It will provide you with the necessary information forthe correct use of the instrument as well as a precise idea of its versatility If you need additional technical information do not hesitate to e mail us at tech hannainst com These instruments are in compliance with the C directives PRELIMINARY EXAMINATION n er Remove the instrument from the packing material and exam ine it carefully to make sure that no damage has occurred 1 5 during shipping If there
14. is any noticeable damage notify your Dealer or the nearest Hanna Customer Service Center immediately l Note Save all packing materials until you are sure that the instru ment functions correctly Any damaged or defective items nn all must be returned in their original packing materials together nei gt with the supplied accessories a GENERAL DESCRIPTION Y HI 23 and HI 24 series are real time microprocessor based EC or TDS controllers They provide accurate measurements flexible ON OFF or proportional control capabilities ana log input and output dual setpoint and alarm signal The system is composed of a case inside which the signal conversion circuitry the microprocessor circuitry and the output power drivers are contained GREAT FLEXIBILITY a The HI 23 and HI 24 controller series offer a great flexibility PROGESS with the possibility to connect a large variety of peripherals such as pumps valves relays and other control devices Each output can be fully programmed The input can be from a conductivity probe or from a 4 20mA transmitter A programmable analog output can be used for monitoring or MAIN FEATURES OF DIFFERENT MODELS other purposes The controller also has the capability to communicate with a e Display large LCD with 4 1 2 13 mm digits and 3 27 7 mm computer via RS485 bus and to be part of an RS485 net digits work LEDs four LEDs are provided for signaling the ener
15. pin 13 is the negative voltage terminal Once the installation is completed select the appropriate working range the reference temperature 20 or 25 C and perform conductivity or TDS calibration as described in this instruction manual Set the control parameters according to the process of interest The Setup Mode allows the user to set all needed character istics of the meter The setup mode is entered by pressing SETUP and entering the password when the device a is in idle or control mode 5 Generally speaking if the password is not inserted the user can only view the setup parameters except for password without modifying them and the device remains in control mode An exception is certain setup items or flags which can activate special tasks when set and confirmed To each setup parameter or setup item is assigned a two digit setup code which is entered and displayed on the secondary LCD SETUP MODE The following table lists the setup codes along with the descrip tion of the specific setup items their valid values and whether password is required to view that item PW column PW no no no no Code Valid Values Default 00 Factory ID 0 to 9999 0000 01 Process ID 01099 00 02 Control enable disable 0 C M disabled 0 1 CM enabled 03 Range 1 0 0 199 9 uS or 100 0 ppm 4 25 C 2 00 0 ATC 0 50 25 15 1 15 1 f s 999 9 0 0 depends on model 2 0 1999 LIS or 1000 ppm
16. then S1 H10 S2 H2 S20 LA If M1 2 2 1 then S2 H20 1 H1 S10 LA If M1 3and M2 2 then 510 S2 H2 S2l LA HAL S14 If M1 2 andM2 3 then S1 H10 52 510 LA 524 M1 4 and 2 1 RELAY MODES then 510 52 02 S1 D1l LA HAL S2 If MI 1 and M2 4 then S1 H10 52 2 D21 LA 51 MI M2 4 then 510 52 52 02 LA 51 1 4 and M2 3 then 52 51 S1 D1 LA HAD S2 D2 where the minimum deviation D1 or D2 is 0 596 of the moxi mum range value Some setup codes are available depending on the model When a wrong setup value is confirmed or a wrong setup code is selected the con troller does not skip to the next setup item but remains in the current item displaying a flashing ERROR indicator until the pa rameter value is changed by the user In some circumstances the user cannot succeed in setting a parameter to a desired value if the related parameters are not changed beforehand e g to set a EC high setpoint to 10 0 mS the high alarm must be set to a value greater than 10 0 m first Note Note Note 20 de energized when the EC value is above the setpoint plus the hysteresis ON OFF Setpoint Setpoint EC Hysteresis The low setpoint relay may be used to control a low conduc tivity dosing pump PI D CONTROL MODE HI 23x2z and HI 24x2z models only PID control is
17. 0 20 mA or 4 20mA RS485 baud rate 1200 2400 4800 and 9600 Power Supply 230 10 VAC or 115 10 VAC 50 60 Hz Power Consumption 15 VA Over Current Protection 400 mA 250 V fast fuse Relays 1 2 and Contact outputs SPDT 54 250 VAC 5A 30 VDC resistive load Alarm Relay Fuse protected 5A 250V fuse Environment 0 50 RH max 85 non condensing Case Material Fiber reinforced self extinguishing ABS Note Protection IP 54 Dimensions 221 x 181 x 86 mm 8 7 x 7 1 x 3 4 Weight 1 6 kg 3 5 Ib N Always disconnect the power cord when wiring the controller 11 Note actual TDS range for HI 24 series depends on TDS factor set SPECIFICATIONS If the Pt 100 has more than 2 wires con nect the two wires of one end to pins 9 and 10 pin 9 is an auxiliary input to compensate for the cable resistance and one wire from the other end to pin 8 Leave the fourth wire unconnected if present If the meter does not detect the temperature probe it will switch automatically to manual temperature compensation with the temperature adjustable through the up and down arrow keys The symbol will blink on the LCD All external cables to be connected to the right panel should 5 amp Voltage Commor Current end with cable lugs Analog output In the models where it is available connect an extemal recorder with a 2 wire cable to these
18. 1 Shielc If using a different Pt 100 separated from the conductivity probe connect the cable shield to pin 11 and the other wires as explained below In the case of a 2 wire sensor connect the Pt 100 to pins 8 and 10 and short pins 9 and 10 with a jumper wire The setup codes can be selected after password and CFM are pressed When CFM is pressed m e 5 the current setup item is saved g Z 2 on EEPROM and the following amp 77 item is displayed Whenever LCD is pressed the device reverts back to control mode The same is true when CFM is pressed on the last setup item The possible transitions in setup mode are the following ENTERING THE PASSWORD Press SETUP to enter the setup mode The LCD will display 0000 on the upper part and PAS on the lower The first digit of the upper part of the LCD will blink PAS Enter the first value of the password by the 0 or O keys FAAP Then contirm the displayed digit with 0 and move to the next one When the whole password has been inserted press CFM to confirm it Connect the two signal wires from the transmitter to terminals 5 on page 8 paying attention to the correct polarity Termi nal 14 is the positive input and terminal 15 is the negative input An unregulated 10 30 VDC 50 mA max power supply output 4 on page 8 is pro vided to power the transmitter if needed Pin 12 12 is the positive voltage terminal and
19. 10 KO maximum load optional isolated 0 20 mA 750 maximum load optional isolated 4 20 mA 750 maximum load optional isolated 0 5 VDC 1 KO minimum load optional isolated 1 5 VDC 1 KO minimum load optional isolated 0 10 VDC 1 KO minimum load optional Real time clock Serial comunication via 854 85 with the possibilities to set the working parameters and to read the displayed data HI 23xy2 and HI 24xy2 MECHANICAL DIMENSIONS 227 8 mm 9 188 6 mm 7 4 o o 5 5 221 8 mm 8 73 Front view 101 6mm Bottom view RS 485 communications terminal HI 23xy2 and HI 24xy2 models only Analog Output terminal HI 23xy1 and HI 24xy1 models only Pt 100 Temperature Sensor terminal Power supply output for external transmitter 4 20 mA input from external transmitter Main Power Supply Alarm Terminal Contact 1 First Dosing Terminal Contact 2 Second Dosing Terminal EC TDS probe connector Hold terminal Timer terminal N Unplug the meter before any electrical connection The connections of terminals 1 to 5 are numbered from 1 to 15 from top to bottom and the connections of terminals 11 and 12 are numbered from 16 to 19 from top to bottom Note INSTALLATION HI 23 and HI 24 series offer a multitude of possibilities from dual setpoints to ON OFF or PID dosage isolated out p
20. 48 92 88200 121800 5479 3 878 1370 155 94 90000 123900 5575 54 55 4 ring EC TDS probe with standard 1 2 external thread for flow thru mounting DIN connector and 3 m 107 cable 4 ring EC TDS probe with standard 1 2 external thread for submersion applications DIN connector and 3 m 10 cable Stainless steel Pt 00 probe with standard 1 2 external threads on both ends for in line and immersion installation 5 m 16 5 cable Glass Pt 100 probe with 5 m 16 5 cable 4 ring EC TDS probe with built in 3 wire Pt100 temperature sensor DIN connector and 5 m shielded cable Submersion in line conductivity probe with DIN connector Dosing Pumps with Flow Rate from 1 5 to 20 LPH Stick Thermometer range 50 0 to 150 0 C EC Transmitter 0 0 to 199 9 mS cm EC Transmitter 0 00 to 19 99 mS cm EC Transmitter O to 1999 uS cm EC Transmitter 0 0 tol 99 9 uS cm EC Isolated Transmitter 0 to 10 mS cm 4 20 mA Simulator 57 OTHER ACCESSORIES HI 3011D HI 3012D HI 7610 HI 7620 HI 7639D HI 7640D BL PUMPS ChecktempC HI 8936A HI 8936B HI 8936C HI 8936D HI 98143 series HI 931002 ACCESSORIES CONDUCTIVITY CALIBRATION SOLUTIONS HI 7030L 12880 US cm solution 500 mL bottle HI 7030M 12880 uS cm solution 230 mL bottle HI 7031L 1413 uS cm solution 500 mL bottle HI 7031M 1413 uS cm solution 230 mL bottle HI 7033L 84 uS cm soluti
21. 96 7118 Fax 6291 6906 South Africa Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 2739 2983 Thailand Tel 66 2619 0708 Fax 66 2619 0061 United Kingdom Tel 01525 850 855 Fox 01525 853 668 USA Tel 401 765 7500 Fax 401 765 7575 For additional Technical Support in your local language see www hannainst com MANHI23R1 05 05 60
22. ATURE EC VALUES uS cm HI7030 HI7031 HI7033 HI7034 HI7035 HI7039 PERIODIC MAINTENANCE HI8030 HI8031 HI8033 HI8034 5 8039 Inspect the probe and the cable The cable used for the pan c XC SCC re ae connection to the controller must be intact and there must 0 2 7150 716 64 48300 65400 2700 be no points of broken insulation on the cable 5 d 8220 896 65 53500 74100 3180 Connectors must be perfectly clean and dry CLEANING PROCEDURE Rinse the probe with tap water If a more thorough cleaning 5 59 10480 147 68 65400 92500 4063 is desired remove the sleeve and clean the platinum sen 16 608 10720 1173 7 67200 94400 4155 sors with a nonabrasive cloth or HI7061 cleaning solution Reinsert the sleeve in the same direction as before 7 62 6 10950 1199 71 68500 96300 4245 Recalibrate the instrument before reinserting the probe in 18 M4 1190 1225 73 69800 98200 4337 Note Always recalibrate the instrument when attaching a new 19 662 11430 1251 74 71300 100200 4429 probe 20 68 11670 1278 76 72400 102100 4523 2 8 11910 1305 78 74000 104000 4617 22 71 6 12150 1332 79 75200 105900 471 23 734 12390 1359 8l 76500 107900 4805 24 75 2 12040 1386 82 78300 109800 4902 10 50 9330 1020 67 59600 83200 3615 2 7 12880 1413 84 80000 111800 5000 26 8 13130 140 86 81300 113800 50 27 80 6 13370 1467 87 83000 115700 5190 28 824 13620 1494 89 84900 117700 5286 2 82 13870 1521 90 86300 119700 5383 30 86 1420 15
23. T commands C control is ON and alarm is OFF D control is ON and alarm is OFF and need update control ler setup GET commands N control and alarm are OFF M control and alarm are OFF and need update controller setup GET commands For example a possible answer to the TMR command is 03 lt STX gt 10 7C lt ETX gt meaning that the current temperature reading is 10 7 C the control action is active and no alarm condition is present and controller setup is updated on PC O1SET33 015 lt CR gt This command sets the setup item 33 max relay ON time of a controller identified by the process ID number 01 to 15 minutes The character means blank Once the controller has received a command it answers with its 2 digit process ID number followed by ACK Hex 06 If the controller recognizes the received command and per forms the requested task STX Hex 02 Data ETX Hex 03 If the received command is a request of data NAK Hex 15 If the received command is not recognized e g The syntax is wrong CAN Hex 18 If the controller cannot answer the request e g the pass word was not sent the controller is in setup mode the setup item is not available in that model etc Note controller answers to the GET command with the same data format explained in the SET command Following are examples of answers 03 lt 5 gt 01200 ETX The co
24. The correspondence is given below For example if UP and CAL are pressed together the LCD will look like this ES p RV A 4 The colon is a useful indicator for the correct position squares maximum of two keys may be pressed simultaneously to be properly recognized To exit the keyboard test procedure press LCD CAL and SETUP simultaneously g 43 I2C failure is detected when the I2C transmission is not acknowledged or a bus fault occurs for more than a certain number of attempts this can be due for example to dam age sustained by one of the ICs connected to I2C bus If so the controller stops any tasks and displays a perpetual sliding message Serial bus error i e this is a fatal error 5Er If an invalid date is read from RTC it is initialized back to the default date and time 01 01 98 00 00 You can use special setup codes perform selftest procedures for LCD keyboard EEPROM relays and LEDs watchdog The operation of these functions is outlined in the setup sec tion The selftest procedures are described in detail in the following subsections The display selftest procedure consists of lighting up all of the display segments together The Display test is announced by a scrolling Display test message The segments are lit for a few seconds and then switched off The segments are lit for a few seconds and then switched d 5P off before exiting the selftest procedure
25. a calibration solution close to the expected sample value and inside the selected CALIBRATION range EC AND TDS CALIBRATION The calibration points for EC and TDS are as follows Range Calibration point s 0 07 199 9 uS cm 84 0 uS cm 1413 uS cm 5 00 12 88 mS cm 80 0 111 8 mS cm 0 1999 uS cm 0 00 19 99 mS cm 0 0 199 9 mS cm 0 0 100 0 ppm 42 0 ppm 0 1000 ppm 800 ppm 0 007 10 00 ppt 6 44 ppt 0 07 100 0 ppt 55 9 ppt The user should select the appropriate range to calibrate setup code 03 Calibration must be performed for each range used The temperature probe should also be connected to the pro cess meter when using a different temperature probe The meters are equipped with a stability indicator The user is also guided with indications on the display during the calibration procedure Pour a small quantity of the calibration solution e g 1 413 uS cm into a beaker If possible use a plastic beaker to mini mize any EMC interference For accurate calibration use two beakers containing the same solution the first one for rinsing the probe the second one for calibration By doing this contamination between the so lutions is minimized Initial Preparation 32 CELL CONSTANT DIRECT SELECTION Whenever the EC TDS probe cell constant is known it is possible to directly calibrate the meter using that value Press CAL to enter calibration mode The LCD will show Press LCD t
26. al operational mode for these meters During control mode the meter fulfills the following main tasks converts information from EC TDS and temperature in puts to digital values control relays and generates the analog outputs as de termined by the setup configuration displays alarm condition In the HI 24 series it is possible to switch between EC and TDS reading pressing LCD The TDS value is obtained mul tiplying the EC measurement by the TDS factor set through setup The HI 23 series displays EC only The status of the meter is shown by the LEDs STATUS LEDs Control Alarm Green LED Contacts LED yellow Red LED OFF ON OFF ON ON OFF ON ON or OFF OFF ON ON OFF ON or OFF Blinking The meter exits control mode by pressing SETUP or CAL and confirming the password Note that this command generates CAL a temporary exit To deactivate MA M the control mode definitively P set CONTROL ENABLE to 0 item 02 Once enabled the relays 1 and 2 can be used in four differ ent modes 1 ON OFF high setpoint low conductivity dosage 2 ON OFF low setpoint high conductivity dosage 3 PID low setpoint low conductivity dosage if available 4 PID high setpoint high conductivity dosage if available Sl S2 D1 D2 H2ll LA IF M22 1 then S2 If M2 2 then S2 H2 HA If M2 3 then S2 D2ll HA If M2 4 then S2 D21 LA If M1 M2 2
27. and pin 4 is connected to 5V The network will be connected at pin 2 and 3 and cable shield if present will be connected at pin 1 To set the communication parameters the following steps must be performed Enter the setup procedure by pressing the SETUP key After password procedure enter the parameter code 01 a 47 RS 485 COMMUNICATION 23xy2 and HI 24xy2 are provided with an RS485 port RS485 standard is a digital transmission method that allows long lines connections Its differential transmission system makes this standard suitable for data transmission in noisy environments The RS485 standard is implemented in EC process meter controllers with the following characteristics Data rate 1200 2400 4800 and 9600 bps Communication Bidirectional Half Duplex Line length up to 1 2 Km typical with 24AWG cable Loads up to 32 typical Internal termination none ov The connections for the 4 pin RS485 terminal 2 provided 1 on page 8 are as follows A 4 9 5V The instrument has no internal line termination To terminate the line an external resistor equal to the characteristic line impedance typically 120 ohm must be added at both ends ofthe line RS485 line SPECIFICATIONS CONNECTIONS 46 KDS null Same as LCD key KDW null Same as key KRG null Same as key KST null Same as SETUP key KUP null Same as key MDR null Request f
28. ature However the user may also perform a one point temperature calibra tion This procedure is to calibrate the offset only the slope will remain as factory calibrated Prepare a beaker containing a solution at a given tem perature inside the range of the meter Use a Checktemp or a calibrated thermometer with a resolution of 0 1 as a reference thermometer Immerse the temperature probe in the beaker as close to the Checktemp as possible Press and hold first CFM and then CAL to enter the tem e perature calibration mode 4 Execute the password proce dure Select code 1 via the arrow keys for temperature calibra tion and confirm with CFM CAL will blink on the LCD The measured Eg temperature will be displayed on both the saat primary and secondary LCD Use the arrow keys to set on the secondary LCD the tem perature read by the reference thermometer When the reading has stabilized at a value near the cali bration point CAL will stop blinking and an intermittent CFM will prompt the user to confirm the calibration f the reading stabilizes at a reading significantly variant from the first setpoint an intermittent ERROR will prompt the user to check the beaker or bath Note Note 36 OUTPUT CALIBRATION CALIBRATION CALIBRATION TYPE CODE POINT 1 POINT 2 0 1 mA 0 0 mA 1 mA 0 20 mA 1 0 20 4 20 2 4 20 0 5 VDC 3 5 VDC
29. ctromagnetic Compatibility Generic Immunity Standard IEC 61000 4 2 Electrostatic Discharge IEC 61000 4 3 RF Radiated TEC 61000 4 4 Fast Transient EN 50081 1 Electromagnetic Compatibility Generic Emission Standard EN 55022 Radiated Class B EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Date of Issue 10 10 2001 anbe A Marsilio Technical Director On behalf of Hanna Instruments S r l Recommendations for Users Before using these products make sure that they are entirely suitable for the environment in which they are used Operation of these instruments in residential areas could cause unaccept able interferences to radio and TV equipment To maintain the EMC performance of equipment the recommended cables noted in the user s manual must be used Any variation introduced by the user to the supplied equipment may degrade the instruments EMC performance To avoid electrical shock do not use these instruments when voltage at the measurement surface exceed 24VAC or 60VDC avoid damage or burns do not perform any measurement in microwave ovens Unplug the instruments from power supply before the replacement of the fuse External cables to be connected to the rear panel should be terminated with cable lugs 59 All Hanna Instruments meters are guaranteed for two years against defects in workmanship and materials when used for their intended purpose and
30. e ground output and the second port to the current output or voltage output depending on which parameter is be ing calibrated Press and hold in sequence CFM first then 0 and then AAJ X X Execute the password procedure The primary display will show the selected parameter blink ing Use the 0 to select the code 0 5 see chart below for the desired parameter displayed on the secondary display e g 4 20 mA 38 e Press to cycle through the data forward or back wards respectively Note In any moment by pressing LCD or CAL DATA the meter will return to the regular operating display e Press orll to view the time of last calibration The sec ondary display will show HOU e Press 0 again to view the cell con stant at the time of the last calibration The secondary display will show CEL e Pressi again to return to the first CAL DATA display date at the time of last calibration FAULT CONDITIONS AND SELFTEST PROCEDURES The fault conditions below may be detected by the software EEPROM data error 2C internal bus failure date lost code dead loop EEPROM data error can be detected through EEPROM test proce dure at startup or when explicitly requested using setup menu When an EEPROM error is detected to the user is given the option to perform a reset of EEPROM Note When an EEPROM reset has been performed th
31. e calibration data are reset to default every range An intermittent CAL will blink on display to advise the user of this status Note When adjusting values using the 0 keys it is important to allow for sufficient response time up to 30 seconds The table below lists the values of output codes along with the calibration point values which are the analog output minimum and the analog output maximum as indicated on the display The secondary display indicates the current calibration point value while the primary display indicates the current cali bration type LAST CALIBRATION DATA The meter can display the following last calibration data Date Time Cell constant While displaying these data the controller remains in con trol mode The data are related to the selected range only The procedure below indicates the flow Displaying of the items follows the above sequence To begin the cycle press CAL DATA The last calibration date will appear on the primary LCD as DD MM format while the secondary display will show the year If the meter has never been calibrated or an EEPROM reset has occurred no calibration data are shown when CAL DATA is pressed The no CAL message will blink for a few seconds then the meter skips back to normal mode 40 As soon as one or more keys are pressed the appropriate segments out of 8 8 8 8 corresponding to the pressed keys will light up on the screen
32. ease refer to this product specifications for fur ther informations The commands sent to the controller must have the follow ing format 2 digit process ID number 3 character command name Parameters variable length may be null End of command always the CR character Hex OD maximum time interval of 20 ms is allowed between two consecutive characters of a command It is possible to send commands to change the controller settings or to simply ask information on the controller status Following is the complete list of commands available Command Parameter Description CAR null Request calibration data GET NN Request setup item NN K01 null Same as CFM CAL keys K02 null Same as LCD CAL SETUP keys KCD null Same as CAL DATA key KCF null Same as CFM key KCL null Same as CAL key Note RS485 PROTOCOL 48 The time out for the first character of the controller answer is 100 milliseconds The minim delay between the last received character and first character of the answer is 15 ms When the controller answers to the ECR TDR and TMR com mands the reading is sent as ASCII string followed by a character indicating the control and alarm status of the controller and info for controller setup moditied This character can assume the following values e A control and alarm are ON B control and alarm are ON and need update controller setup GE
33. elay when the measured value is close to the alarm setpoint The alarm hysteresis amplitude is 1 5 of full scale 26 27 In order to have the Fail Safe feature activated an external power supply has to be connected to the alarm device Note CONTROL THROUGH ANALOG OUTPUT Models HI 23xy1 and HI 24xy1 have a proportional ana log output signal selectable among 0 1mA 0 20mA 4 20mA 0 5VDC 1 5VDC and 0 10VDC at the analog output terminals With this signal the actual output level amplitude is varied rather than the proportion of ON and OFF times duty cycle control A device with analog input e g a pump with a 4 20 mA input can be connected to these terminals IDLE mode is entered through setup code 2 During idle mode the device performs the same tasks as when it is in control mode except for the relays The alarm relay is activated no alarm condition the control relays are not activated while the analog output remains activated When the instrumentis in idle mode the red and green status LEDs are on Idle mode is useful to disable control actions when the exter nal devices are not installed or when the user detects unusual circumstances 29 IDLE MODE Moreover the alarm signal is generated only after a user selectable time period alarm mask has elapsed since the controlled value has overtaken one alarm threshold This additional feature will avoid fake or temporary alarm con ditions If t
34. gizing This allows the control of any process where conductivity is of relays 1 and 2 yellow LEDs and alarm relay a green involved and a red LED The figure below illustrates the connection possibilities of ad Relays 2 output relays for low conductivity or high con vanced Hanna controllers such as HI 23 or HI 24 ductivity dosage COM NO and NC contacts and 1 output relay for alarm condition COM and NC contacts FUNCTIONAL DESCRIPTION H ANNA 18888 0 e e last calibration data viewing enters and exits exits from setup and reverts back to normal mode in idle or control phases with the measurement on the display During EC TDS calibration it alternates EC TDS buffer value and current cell constant on the display In HI 24 series it switches between EC and TDS reading initiates and exits calibration mode enters setup mode moves to the next digit letter circular solution when se lecting a parameter Same as 1 key during last calibration data viewing mode increases the blinking digit letter by one when selecting a parameter Advances forward while in last calibration data viewing mode Increases the temperature setting when temperature probe is not inserted confirms current choice and skips to the next item decreases the blinking digit letter by one when selecting a parameter Reverts backward while in last calibration data viewing mode Decreases the temperature sett
35. he power supply is interrupted the relay is de energized as if in alarm condition to alert the operator In addition to the user selectable alarm relays all EC TDS controllers are equipped with the Fail Safe alarm feature The Fail Safe feature protects the process against critical errors arising from power interruptions surges and human errors This sophisticated yet easy to use system resolves these predicaments on two fronts hardware and software To eliminate problems of blackout and line failure the alarm function operates in a Normally Closed state and hence alarm is triggered if the wires are tripped or when the power is down This is an important feature since with most meters the alarm terminals close only when an abnormal situation arises how ever due to line interruption no alarm is sounded causing extensive damage On the other hand soft ware is employed to set off the alarm in abnormal circumstances for example if the dosing terminals are closed for too long In both cases the red LED will also blink pro viding a visual warning signal The Fail Safe mode is accomplished by connecting the ex ternal alarm circuit between the FS C Normally Open and the COM terminals This way an alarm will warn the user when EC exceeds the alarm thresholds during power down and in the case of a broken wire between the process meter and the external alarm circuit Note 28 The type voltage or current and
36. ing when temperature probe is not inserted Primary display Secondary diaplay 1 Liquid Crystal Display CAL DATA key LCD key CAL key SETUP key key D key CFM key key LEDs Calibration and Setup procedures allowed only through an unlock password Calibration 2 points with Hanna EC and TDS calibration solutions Four different EC working ranges 0 to 199 945 O to 1999u5 Oto 19 99m5 O to 199 95 Four different TDS working ranges 0 to 100 0ppm 0 to 1000ppm 0 to 10 00ppt O to 100 0 for HI 24 series Possibility to switch to TDS measurements with conversion factor from 0 00 to 1 00 HI 24 series Temperature compensation of the HANNA standard solu tions Temperature compensation of the EC and TDS reading with temperature coefficient selectable from O to 10 Use of a 3 wire Pt 1 00 temperature sensor to compensate forthe cable resistance and have a precise automatic tem perature compensation of the measurements in long dis tance applications Manual temperature setting when the temperature probe is not inserted or the temperature exceeds the upper range Last calibration data internally recorded nonvolatile EE PROM memory calibration date and time cell constant calibration solution values Input 4 ring EC TDS probe with cell constant 2 0 1096 or 4 20mA analog input from a transmitter Analog output HI 23xy1 and HI 24xy1 isolated 0 1 mA
37. irmware code ECR null Request EC reading available in control or idle mode only TDR null Request TDS reading available in control or idle mode only for HI 24 series only RNG null Request measure Range available in control or idle mode only TMR null Request temperature reading PWD NNNN Send the 4 digit password SET NNPCCCCC Set setup item NN to the PCC CC C value P if the value is greater than 0 P if the value is less than 0 C can be 0 or 1 only C C C C can be 0 to 9 or blank the command is not available if the controller is in setup mode If the controller is not in control or idle mode and the tem perature reading is requested through the TMR command the controller answers with the last acquired reading when it was in control or idle mode Following are examples of commands for setup items Note 035 22 01200 lt gt This command sets the setup item 22 relay 2 set point of a EC controller identified by the process ID number 03 to the 12 00 mS value 49 Using the arrow keys set the e 4 controller address To exit setup 4 vy press CFM key and then LCD key 4 _ In an RS 485 network each device must have a different address Select the desired baud rate with the up and down keys and press the CFM key to store the new settings Available baud rates are 1200 2400 4800 and 9600 Bps The PC software to communicate with the controllers is HI92500 Pl
38. irst press the up or down arrow keys after entering the calibration pro cedure to skip to the next possible calibration buffer In this case after confirmation of the cell constant the meter will ask for the offset calibration displaying zero on the LCD press CAL to exit or calibrate the offset if desired The EC or TDS calibration value shown is referenced at 25 even if the reference temperature of 20 has been selected During calibration press LCD to display the cell constant value on the primary display Press LCD again to return to calibration buffer visualization To interrupt the calibration procedure press CAL to exit to normal operational mode If the process meter has never been calibrated or an EE PROM reset has occurred the meter continues to perform measurements However the user is informed of an EC or TDS calibration requirement by a blinking CAL indication see Startup section The device must be calibrated within the temperature range specified for the EC or TDS calibration solution Note Note Note Note Note 34 Calibration procedure may be interrupted by pressing CAL again at any time If the calibration procedure is stopped this way or if the controller is switched off before the last step no calibration data is stored in nonvolatile memory EE PROM ANALOG INPUT CALIBRATION The analog input is already factory calibrated However the user may also perform a 2 poin
39. lays the temperature If the wrong password is entered the system reverts back to normal operation displaying EC TDS values e Ois the default value for the 1 calibra tion point Dry the conductivity probe and leave it in air ER Only when the reading is stable the CAL 45 indicator will stop flashing after about 30 seconds and the indicator will start blinking p Press CFMto confirm the calibration point the primary LCD will display the second expected buffer value If the zero calibration cannot be performed ERROR will blink Select the solution value on the primary display by press ing or D if the selected range has two possibilities t e g 5 000 and 12 880 gf 4 er ms d mmerse the EC TDS probe with the temperature sensor in the selected solution The level of solution must be higher than the holes of the EC TDS probe sleeve Tap the EC TDS probe repeatedly on the bottom of the beaker and stir to ensure that no air bubbles are trapped inside the sleeve 33 Offset Calibration Note Cell constant calibration The controller is factory calibrated for temperature as well as for the analog input and outputs The user should periodically calibrate the instrument for EC or TDS For greatest accuracy it is recommended that the instrument is calibrated frequently Before beginning normal operation it is recommended to standardize the probe with the Hann
40. maintained according to instructions The probes are guaranteed for a period of six months This warranty is limited to repair or replace ment free of charge Damage due to accident misuse tampering or lack of pre scribed maintenance are not covered If service is required contact the dealer from whom you purchased the instrument If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be returned to Hanna Instruments first obtain a Returned Goods Authorization number from the Customer Service department and then send it with shipping costs prepaid When shipping any instrument make sure it is properly pack aged for complete protection Hanna Instruments reserves the right to modify the design construction and appearance of its products without ad vance notice WARRANTY 58 TECHNICAL SERVICE CONTACTS Australia Tel 03 9769 0666 Fax 03 9769 0699 China Tel 10 88570068 Fax 10 88570060 Egypt Tel amp Fax 02 2758 683 Germany Tel 07851 9129 0 Fax 07851 9129 99 Greece Tel 210 823 5192 Fax 210 884 0210 Indonesia Tel 21 4584 2941 Fax 21 4584 2942 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 62
41. mation on calibration need for other ranges other than the awareness that EEPROM was reset After an EEPROM reset all calibrations input and output have to be performed in order to obtain correct measure ments 53 STARTUP 03 lt STX gt 10 7D lt ETX gt meaning that the current temperature reading is 10 7 C the control action is active and no alarm condition is present and controller setup is modified must update controller setup for PC GET commands for setup items If asking for the last calibration data and the controller was never calibrated it answers with 0 e g 01 lt STX gt 0 lt ETX gt If the controller was calibrated it answers with 1 followed by the calibration data The Data field of the answer has the following format 1 Date Time Cell Constant Date DDMMYY e g 170400 for April 17 2000 Time HHMM e g 1623 for 4 23 pm Cell Constant ASCII string e g 1200 The items in the Data field are separated by blanks 52 EC VALUES VARIOUS TEMPERATURES EC TDS PROBE MAINTENANCE Temperature has a significant effect on conductivity Table Probe can be compensated for normal contamination by a below shows EC values at various temperatures for the process of recalibration When calibration can no longer Hanna calibration solutions be achieved remove the conductivity probe from the sys N tem for maintenance TEMPER
42. ntroller with process ID number 03 says that its cur rent setpoint is 1 2 0005 01 STX UE24 21225 lt gt The controller with process ID number 01 says that it is a HI24212 model with firmware release 2 5 During the automatic startup the Real Time Clock RTC is checked to see if a reset occurred since last software initial ization In this case the RTC is initialized with the default date and time 01 01 1998 00 00 An EEPROM reset does not affect the RTC settings The EEPROM is also checked to see if it is new If this is the case the default values are copied from ROM and then the device enters normal mode Otherwise an EEPROM check sum test is performed the same is performed during EEPROM selftest procedure If checksum is correct normal mode is entered otherwise the user is asked whether the EEPROM should be reset If EEPROM reset is requested default values from ROM are stored into EEPROM as would happen with a new EEPROM Note that EEPROM data is composed of setup data and calibration data As for the setup data the calibration data is assigned default values when an EEPROM reset occurs An uncalibrated meter can perform measurement though user is informed that EC or TDS calibration is needed by means of a blinking CAU When the last calibration data is required the no CAL message is displayed if no calibration procedure was per formed Unlike EC TDS calibration the user has no infor
43. o display the current cell constant on the pri mary LCD factory default value is 2 000 cm annrn CAL n t Li ah Press SETUP key e 0 0 and D enter the probe cell constant the value must be between 1 333 and 4 000 and con firm by pressing CFM Note Ifthe entered cell constant value is invalid the ERROR indi cator appear on the LCD Note Press SETUP before CFM to exit without changing the cell constant CALIBRATION BUFFER DIRECT SELECTION This feature allows to set a user defined calibration point in order to perform calibration at a point different from the memorized standards Press CAL to enter calibration mode The LCD will show Press SETUP key Using 0 0 and 0 enter the desired buffer value and confirm by pressing CFM 35 When the reading is stable CAL will stop flashing after about 30 seconds and CFM indicator will blink Press CFM to confirm the calibration point if the reading is close to the selected solution meter stores the reading If the reading is not close to the selected solution ERROR will blink A 2 point calibration is always suggested However the EC TDS calibration can also be performed at 1 point To cali brate offset only just press CAL after confirmation with CFM of the zero reading the meter will return to normal opera tional mode To have the cell constant calibrated f
44. on 500 mL bottle HI 7033M 84 uS cm solution 230 mL bottle HI 7034L 80000 US cm solution 500 mL bottle HI 7034M 80000 US cm solution 230 mL bottle HI 70351 111800 uS cm solution 500 mL bottle HI 7035M 111800 uS cm solution 230 mL bottle HI 7039L 5000 uS cm solution 500 mL bottle HI 7039M 5000 uS cm solution 230 mL bottle CONDUCTIVITY CALIBRATION SOLUTIONS IN FDA APPROVED BOTTLES HI 8030L 12880 uS cm solution 500 mL bottle HI 8031L 1413 uS cm solution 500 mL bottle HI 8033L 84 uS cm solution 500 mL bottle HI 8034L 80000 uS cm solution 500 mL bottle HI 8035L 111800 uS cm solution 500 mL bottle HI 8039L 5000 uS cm solution 500 mL bottle ELECTRODE CLEANING SOLUTIONS HI 7061M General cleaning solution 230 mL bottle HI 7061L General cleaning solution 500 mL bottle ELECTRODE CLEANING SOLUTIONS IN FDA APPROVED BOTTLES HI 8061M General cleaning solution 230 mL bottle HI 8061L General cleaning solution 500 mL bottle 56 CE DECLARATION OF CONFORMITY ribus instruments 66 DECLARATION OF CONFORMITY Hanna Instruments Italia Srl via E Fermi 10 35030 Sarmeola di Rubano PD ITALY herewith certify that the microprocessor based process controllers HI 23211 HI 23212 HI 23221 HI 23222 HI 24211 HI 24212 HI 24221 HI 24222 have been tested and found to be in compliance with EMC Directive 89 336 EEC and Low Voltage Directive 73 23 EEC according to the following applicable normatives EN 50082 1 Ele
45. r to the 1 Starting from a solution with an EC or TDS value quite controller the procedure is easier and doesn t need to hand different from the dosed liquid turn on the dosing device plot the process variable EC or TDS at ifs maximum capacity without the controller in the loop ALARM RELAY open loop process Note the starting time 2 After some delay T the EC or TDS starts to vary After more delay the EC or TDS will reach a maximum rate of change slope Note the time that this maximum slope occurs and the EC or TDS value at which it occurs Note FS C NO Normally Ope the maximum slope in EC or TDS per minute Turn the Energized Relay system power off COM EC 7 Tbs 15 0 NC Normally Closed De energized Relay The alarm relay functions in the following manner During alarm condition the relay is de energized When not in alarm condition the relay is energized max slope Example High alarm set at 1400 uS m Low alarm set at 600 uS Aom Relay De energizet a Av gt time Energized No Alarm 3 On the chart draw a tangent to the maximum slope point until intersection with the horizontal line corresponding to the initial 0 600 630 1870 1400 1999 uS EC or TDS value Read the system time delay Tx on the time axis An hysteresis will eliminate the possibility of continuous se quences energizing de energizing the alarm r
46. t calibration at 4 and 20 mA It is sufficient to perform the calibration on one range only Connect a mA simulator e g HI931002 to the analog input of the controller 5 at page 7 Press and hold first CFM and then CAL to enter the analog input calibration mode Execute the password proce feg dure b Select code via the arrow a keys for analog input calibra tion and confirm with CFM CAL will blink on the LCD The secondary LCD will display 4 for the first calibration point The primary LCD will display the nna conductivity reading Setthe mA simulator to 4 mA and wait forthe reading to stabilize CAL will stop blinking and an intermittent CFM will prompt the user to confirm the calibration f the reading stabilizes at a reading significantly variant from the first calibration point an inter mittent ERROR will prompt the user to e check the input f everything is satisfactory the secondary A LCD will display 20 for the second cali bration point e Setthe mA simulator to 20 mA and wait for the reading to stabilize CAL will stop blinking and an intermittent CFM will prompt the user to confirm the calibration 37 m A A Press SETUP before CFM to exit without changes It is suggested to calibrate the offset before entering the cali bration buffer direct selection TEMPERATURE CALIBRATION The controller is factory calibrated for temper
47. terminals 2 on page 8 paying attention to the correct polarity wide variety of output signals either in V or in mA is avail able to fit most standards Terminal 5 is the voltage output terminal 6 is the analog output common and terminal 7 is amp COM the current output Contact 1 and 2 Connect the dosing devices to these terminals 8 and 9 on page 8 in order to activate and de activate them according to the selected control parameters mA Input to switch to mA input signal from a conductivity transmitter e g HI8936 or HI98143 series see the setup procedure code 6 Note Note Power Supply Connect a 3 wire power cable to the terminal strip while paying attention to the correct line L earth PE and neutral N terminal connections Power 230VAC 50 mA Ll Line Contact 200mA fuse inside PE leakage current 1 mA this contact must be con nected to ground e Conductivity input the default input is from conductivity probe Connect the EC probe to the terminals 10 on page 8 HI7639D is a conductivity probe with built in tem perature sensor e Pt 100 Terminals to be used only if the probe is without Pt 100 connect to these contacts 3 on page 8 the Pt 100 temperature sensor for automatic temperature compensation of measurement Follow the below diagram for connecting a 3 wire Pt 100 sensor as HI5001 5 Color Pin GRAY 8 8 BROWN 9 is YELLOW 10 1
48. the range of the output analog signal is selectable through the jumpers on the board wo Analog output options are as follows E 0 5 VDC 1 5 VDC 01010 default 1 0 20 mA 4 20 mA default 0 1 mA Control actions are stopped as soon as the Choice between different ranges with the same configura user presses SETUP and enters the pass x tion for example 0 20 mA and 4 20 mA is achieved via word lt 2 software by entering the setup mode and selecting code 40 In orderto reactivate the control mode use see Setup Mode section for exact procedure code 02 of setup see Setup section Oth Factory default is 0 20 mA 4 20 mA for the current output erwise the meter remains in idle mode and 0 10 VDC for the voltage output In any case contact the nearest Hanna Customer Service Center for changing of the default configuration By default the minimum and maximum values of analog ANALOG OUTPUT output correspond to the minimum and maximum of the selected range of the meter For example for a controller with Models HI 23xy1 and HI 24 1 are provided with the ana a selected 0 to 1999 US range and analog output of 4 20 log output feature mA the default values are and 1999 US corresponding to The output is galvanic separated and can be a voltage or a and 20 mA respectively current These values can be changed by the user to have the analog output matching a different EC or TDS range for example
49. uts with user selectable zoom recorder outputs in mA and volts Use the 3 wire Pt 1 00 temperature sensor to compensate for the cable resistance and have a precise automatic tempera ture compensation of the measurements in long distance applications Seethe below diagram for a recommended installation 1 4 PRS Ba el DE BB CE d gt gs T a TT rl NI Jal CONDUCTIVITY PROBE All external cables to be connected to the right panel should end with cable lugs Use wires with cable lugs when connecting to the strip con tacts Range 0 0 to 199 9 uS cm 0 to 1999 uS cm 0 00 to 19 99 mS cm 0 0 to 199 9 mS cm 0 0 to 100 0 ppm 0 to 1000 ppm HI 24 series only 0 00 to 10 00 ppt 0 0 to 100 0 ppt 24 series only 10 0 to 100 0 C Resolution 0 1 uS cm 1 uS cm 0 01 mS cm 0 1 mS cm 0 1 ppm 1 ppm 0 01 ppt 0 1 ppt HI 24 series only 0 1 C Accuracy 0 5 full scale EC and TDS 20 C 68 F 0 5 C between 0 to 70 C 1 C outside Temperature Automatic or manual 10 to 100 C Compensation with B adjustable from 0 00 to 10 00 C 2 full scale EC and TDS 0 5 C Installation Category II Typical EMC Deviation Probe 4 ring conductivity probe with built in 3 wire Pt100 temperature sensor or conductivity probe external Pt100 see Accessories section Analog Input 4 20 mA Analog Output 0 10 Vdc 0 5 Vdc or 1 5 Vdc 0 1 mA
50. with the relay contacts disconnected from external plant devices EEPROM SELFTEST RELAYS AND LEDS Note 44 Up to 32 units can be connected to the same 5485 line with a total line length of up to 1 2 Km using 24AWG cable To minimize electromagnetic interference use shielded or twisted pair cable to connect the units Each EC controller unit is identified by its process ID number setup item 01 The EC controller acts as a slave device it only answers to commands received from a master device e g an indus trial PC connected to the line As additional feature the controller is also provided with two pins 5V and OV inor 1 der to apply the Fail 5018 Open Line protection method To avoid erroneous readings in Open Line conditions pull up and pull down resistors should be connected as shown n3 4 The Fail Safe resistors are connected only to one unit in the line and their value depends on the application and char acteristic impedance of the connection cable typical between 15K and 50K The RS485 port is galvanic separated from measuring circuit and power line If both analog output and RS485 port are present they have the same ground SETTING THE SERIAL COMMUNICATION The external connections for RS 485 communications are accessible to the left panel number 1 and the pins are as signed as shown in figure Pin 1 is ground pin 2 is signal line pin 3 is the inverted signal line
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