HI 700 / HI 710 Series
Contents
1. EMERGENCY gt 24V1 24 V2 24V FUSE FUSE INSTALLATION HI 700 and HI 710 series offer a multitude of possibilities from single and dual set points to ON OFF or PID dosage isolated outputs with user select able zoom bi directional RS485 recorder outputs in mAmps and Volts Use the 3 wire Pt 100 temperature sensor to compensate for the cable resistance and have a precise auto matic temperature compensation of the measurements in long 0 0 to 199 9 uS 0 to 1999 uS 0 00 to 19 99 mS 0 0 to 199 9 mS 0 0 to 100 0 ppm 0 to 1000 ppm HI 710 only 0 00 to 10 00 ppt 0 0 to 100 0 ppt HI 710 only 10 0 to 100 0 C 0 1 uS 1 uS 0 01 mS 0 1 mS 0 1 ppm 1 ppm HI 710 models only 0 01 ppm 0 1 ppm HI 710 models only 0 1 C 0 5 96 FS EC ond TDS 0 5 C 0 to 70 C 1C outside 2 F S EC and TDS 0 5 C Automatic or manual at 1 point Automatic or manual 10 to 100 C with adjustable temperature coefficient from 0 00 to 10 00 C Adjustable from 0 00 to 1 00 SPECIFICATIONS Ranges Resolution Accuracy 20 C 68 F Typical EMC Deviation EC Calibration Temperature Compensation TDS Factor HI 710 only2. 4 20mA Outputs Analog isolated 0 1 mA 0 20 mA and 4 20 mA distance applications 0 5 Vdc 1 5 Vdc and 0 10 Vdc or digital RS485 See the diagram for a Analog Input 4 20 mA recommended installa Setpoint Relay 2 contact outputs SPDT 5A 250 Vac 5A 30 Vdc Ton resistive load Fuse protected 5A 250V FUSE Alarm Relay Contact output SPDT 5A 250 Vac 5A 30 Vdc resistive load Fuse protected 5A 250V FUSE Power Supply 230 10 Vac or 115 10 Vac 50 60 Hz 5 Power Consumption 15 V aT 9 ay ore Over Current Protection 400 mA 250V FAST FUSE 8 ae 4 3 Environment 0 to 50 C 32 to 122 F RH max 95 2 398 dn Installation Category II Enclosure Single case DIN Dimensions Panel cutout 140 x 140 mm 2 Instrument 144 x 144 170 mm z g Weight Approximately 1 6 kg 3 5 Ib K h n 2 d 5 E E 6 Y3MOd Note actual TDS range for HI 710 models depends on TDS factor set lf the Pt 100 has more than 2 wires con nect the two wires of one end to pins 7 10 0 100 and 8 pin 7 is an auxiliary com 7 4 pensate for the cable resistance and one 8 wire from the other end to pin 6 Leave the fourth wire unconnected if present eL S Shield If the meter does not detect the temperature probe it will switch automatically to manual temperature compensation with the temperature adjustable through the up an
3. 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 ff or amp to make the HI 931002 or multimeter out put correspond with the meter s IMPORTANT 42 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 procedure at startup or when explicitly requested using setup menu When an EEPROM error is detected user is given the option to perform a reset of EEPROM When an EEPROM reset has been per formed calibration data are reset to default every range An intermittent CAL will blink on the display to advise the user of this status A 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 IF an invalid date is read from RTC it is initialized back to the default date and time 01 01 98 00 00 The error detection for dead loops is performed by watchdog see
4. 586 D 8 9 FRONT PANEL Liquid Crystal Display enters setup mode confirms current choice and skips to the next item initiates and exits calibration 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 last calibration data viewing enters and exits decreases the blinking digit letter by one when selecting a parameter Reverts backward while in last calibration data viewing mode Decreases the temperature setting when temperature probe is not inserted 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 710 models only it switches between EC and TDS reading moves to the next digit letter circular solution when se lecting a parameter Same as key during last calibration data viewing mode SETUP key CFM key CAL key T key CAL DATA key key LCD key key LEDs eode o ho o Y EC TDS PROBE WITH BUILT IN PT 100 TEMPERATURE SENSOR MIXER
5. 1300 1494 89 84900 117700 13870 1521 90 86300 119700 14120 1548 92 88200 121800 14370 1575 94 90000 123900 F 4 50 59 60 8 62 6 64 4 66 2 68 69 8 71 6 73 4 75 2 7 78 8 80 6 82 4 84 2 86 87 8 20 2 22 23 24 25 26 27 28 29 30 3 50 4 ring conductivity probe with built in 3 wire Pt 00 tempera ture sensor and 5 m 16 5 cable 4 ring conductivity probe with standard 1 2 external thread for flow thru mounting and 3 m 10 cable 4 ring conductivity probe with standard 1 2 external thread for submersion applications and 3 m 10 cable Stainless steel Pt100 probe with standard 1 2 external threads at both ends for in line and immersion installation 5 m 16 5 cable Dosing pumps with flow rate from 1 5 to 20 Iph Electronic 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 to 199 9 uS cm EC isolated transmitter O to 10 mS cm 4 20 mA simulator 53 OTHER ACCESSORIES HI 7639 HI 3011 HI 3012 HI 5001 5 BL PUMPS HI 98501 ChecktempC HI 8936A HI 8936B HI 8936C HI 8936D HI 98143 series 4 20mA HI 931002 ACCESSORIES CONDUCTIVITY CALIBRATION SOLUTIONS HI 7030M 12880 uS cm calibration solution 230 mL bottle HI 7030L 12880 uS cm calibra
6. Loads up to 32 typ Internal termination none Excel Copyright of Microsoft Co Lotus 1 2 3 Copyright of Lotus Co Windows registered Trademark of Microsoft Co 29 SPECIFICATIONS output matching a different EC or TDS range for example 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 and maximum are 41 or 42 respectively For the exact pro cedure refer to the setup mode section in the manual The analog output is factory calibrated through software The user may also perform the calibration procedure as explained in the following It is recommended to perform the output calibration at least once a year Analog output resolution is 1 596o f s with 0 5 f s accu racy The analog output is frozen when entering the setup or calibration mode after password confirmation Note Note Note 28 As additional feature the controller is also sv provided with two pins 5V and OV in order to apply the Fail Safe Open Line protection method To avoid erroneous B readings in Open Line conditions pull up and pull down resistors should be R connected as shown o 9 9 0 9 9 ov 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 The RS485 port is opt
7. e C control is ON and alarm is OFF D control is ON and alarm is OFF and need up date controller 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 STX 10 7C ETX meaning that the current temperature reading is 10 7 C the control action is active no alarm condition is present and controller setup is updated on PC 03 lt STX gt 10 7D lt ETX gt meaning that the current temperature reading is 10 7 C the 34 To perform the EC calibration enter the calibration mode by pressing CAL and entering the password e After the correct password is entered the control actions stop and the pri mary LCD will display the first calibration value with the CAL in dicator blinking The secondary LCD displays the temperature If the wrong password is entered the system reverts back to normal operation displaying EC values e O is the default value for the 1 calibration point Dry the conductivity probe and leave it in air Only when the reading is stable the CAL indicator will stop flashing af ter about 30 seconds and the READY and CFM indicators will start blinking Press CFM to confirm the calibration point the primary LCD will display the second expected buffer value If the zero calibration cannot be per formed ERROR wi
8. COM NO and NC contacts and 1 output relay for alarm condition COM NO and NC con facts 54 85 isolated communication link HI 700222 and HI 710222 only Calibration and Setup procedures allowed only through an unlock password Calibration 2 points with Hanna EC and TDS calibration solutions Note 1 40 0 mm 165 0 mm REAR PANEL o e E Pa DISS SSISISISIS g HEIE vsepce ISISISISISIS SISISISISISISIS 22022 59 Eisis Fd 6 pin RS485 terminal HI 700222 and HI 710222 only Analog Output HI 700221 and HI 710221 only Power Supply Alarm Terminal Contact 2 Second Dosing Terminal Timer Hold Contact 1 First Dosing Terminal Pt 100 Temperature Sensor connector EC TDS probe connector Power supply output for external transmitter 4 20 mA input from external transmitter ho 7 6230 09 2M Os OY hs 23 rs N Unplug the meter before any electrical connection MECHANICAL DIMENSIONS 138 0 mm 144 0 mm 135 0 mm 138 0 mm ll 144 0 mm SIDE VIEW FRONT VIEW FUNCTIONAL DESCRIPTION Primary US m ppm ppt DATE TIME Display EEG pen Tref TDS FACTOR CAL CLEAI PI Etec cow am BARRE F Secondary HI 700 Display P 319 eq i Ne CHANNA institiments CONTACTS p
9. 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 procedure is reported in this manual and can be used in almost all applications The user can vary five ditferent parameters i e the setpoint S1 or S2 the deviation D1 or D2 the reset time the rate time and the proportional control mode period T from 1 to 30 minutes User can disable the derivative and or integrative action for P or Pl controllers by setting Td 0 and or Ti MAX Ti respectively through the setup procedure Note 22 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 software is em ployed to set off the alarm in abnormal circumstances for example if the dos ing terminals are closed for too long a period In both cases the red LED s will also provide a visual warning signal The Fail Sate mode is accomplished by connecting the exter nal 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
10. amp and enter the desired buffer value and confirm by pressing CFM Press SETUP before CFM to exit without changes It is suggested to calibrate the offset before entering the cali bration buffer direct selection 39 Note Note Note Note Press CFM to confirm the calibra tion point if the reading is close to the selected solution the meter LF stores the reading If the reading is not close to the se lected solution ERROR will blink A 2 point calibration is always suggested However the EC calibration can also be performed at 1 point To calibrate offset only just press CAL after confirmation with CFM of the zero reading the meter will return to normal operational mode To have the cell constant calibrated first press the up or down arrow keys after entering the calibration procedure to skip to the next possible calibration buffer In this case atter 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 calibration value shown is referenced at 25 C even if the reference temperature of 20 C 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 SETUP to restart the procedure or CAL to exit to normal operational mode If
11. below 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 45 Note DISPLAY SELFTEST LAST CALIBRATION DATA The meter can display the following last calibration data Date Time Cell constant While displaying these data the controller remains in control 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 CAL DATA 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 CAU message will blink for a few seconds then the meter skips back to normal mode e Press ff or 4 to cycle through the data forward or backwards respectively In any moment by pressing LCD or CAL DATA the meter wil return to the regular operating display Press ff or to view the time of last calibration The secondary display will show HOU 0000 Press 1
12. between the process meter and the external alarm circuit 5 0 FSeC 4 COM In order to have the Fail Safe feature activated an external power supply has to be connected to the alarm device CONTROL THROUGH ANALOG OUTPUT Models HI 700221 and HI 710221 have a proportional analog signal selectable among 0 1 mA 0 20mA 4 20mA 0 5VDC 1 5VDC and 0 10VDC at the analog output ter minals With this output 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 25 The alarm relay functions in the following manner FSeC NO Normally Open Energized Relay COM 15 0 NC Normally Closed De energized Relay During alarm condition the relay is de energized When not in alarm condition the relay is energized Example High alarm set at 1400 u 5 Low alarm set at 600 uS Aom Relay De energize Alarm ay va Energized t No Alarm 0 600 630 1970 1400 1999 15 An hysteresis will eliminate the possibility of continuous se quences energizing de energizing of the alarm relay when the measured value is close to the alarm setpoint The alarm hysteresis amplitude is 1 596 of full scale Moreover the alarm signal is generated only after a user se lectable time period alarm mask has elapsed since the controlled value has overtaken one ala
13. controller was calibrated it answers with 1 followed by the calibration data The Data field of the answer has the following format 1 lt Date gt lt Time gt lt CellCostant gt e Date DDMMYY e g 170400 for April 17 2000 e Time HHMM e g 1623 for 4 23 pm e Cell Costant ASCII string e g 1200 The items in the Data field are separated by blanks SETTING THE BAUD RATE The transmission speed baud rate can be selected with the up and down keys then press the CFM key to store the new settings Available baud rates are 1 200 2400 4800 and 9600 bps 35 The controller answers to the GET command with the same data format explained in the SET command Following are examples of answers 1 03 STX 01200 ETX The controller with process ID number 03 says that its current setpoint is 12 00 mS 2 01 STX UE71022225 lt gt The controller with process ID number O1 says that it is a HI710222 model with firmware release 2 5 The minum 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 con troller This character can assume the following values N control and alarm are ON B control and alarm are ON and need update con troller setup GET commands
14. of its versatility EXTERNAL FUNCTIONS 4 ised eu mice oceani 48 UD ca estesa s These instruments are in compliance with the C directives EC VALUES AT VARIOUS TEMPERATURES 50 PROBE MAINTENANCE sss eese 51 ACCESSORIES cuca a qh roh RR bak E reas 52 54 CE DECLARATION OF CONFORMITY 55 2001 Hanna Instruments All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Four different EC working ranges O to 199 95 0 to 1999u5 O to 19 99 mS O to 199 9m5 Four different TDS working ranges 0 to 100 0ppm 0 to 1000ppm 0 to 10 00ppm 0 to 100 0ppm for HI 710 models Possibility to switch to TDS measurements with conversion factor trom 0 00 to 1 00 HI 710 models only Temperature compensation of the HANNA standard solu tions Temperature compensation of the EC and TDS reading with temperature coefficient B selectable from 0 to 10 C Manual temperature setting when the temperature probe is not inserted or temperature exceeds the upper range Last calibration data internally recorded non volatile EE PROM memory calibration date and time cell constant calibration solution values Input 4 ring EC TDS probe with cell constant 2 0 10 or 4 20mA analog input from a transmitter Output HI 700221 and HI 710221 only isolated 0 1 mA 10 KO maximum load optional isolated 0 20 mA 750 Q maximum lo
15. 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 primary display indicates the current calibration type OUTPUT CALIBRATION CALIBRATION CALIBRATION TYPE CODE POINT 1 POINT 2 0 1 mA 0 0 mA 1 mA 0 20 mA 0 mA 20 mA 4 20 mA 2 4 mA 20 mA 0 5 Vdc 3 0 Vdc 5 Vdc 1 5 Vdc 4 1 Vdc 5 Vdc 0 10 Vdc 5 0 Vdc 10 Vdc 43 Note ANALOG OUTPUT CALIBRATION In the meters 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 out A LLL put calibration at least once a year B TS Calibration should only be performed Ca voltage Output B Ground Output C Current Output With a multimeter or an HI 931002 connect the common port to the ground output and the second port to the cur rent output or voltage output depending on which parameter is being calibrated Press and hold in sequence CFM first then and then CAL to enter the Analog Output Calibration mode Execute the password procedure after 10 minutes from power up The primary display will show the current selected param eter blinking Use the to select the code 0 5 see chart below for the desired parameter displayed on the second ary display e g 4 20 mA
16. the shaded areas is then dependent on the error amplitude With the integral function reset the controller will reach a more stable output around the setpoint providing a more accurate control than with the ON OFF or proportional ac tion only 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 con trol than ON OFF controllers and it is best suitable in system with a fast response quickly reacting to changes due to ad PI D CONTROL MODE 20 SIMPLE TUNING PROCEDURE The following procedure uses a graphical technique of ana lyzing a process response curve to a step input 1 Starting from a solution with an EC or TDS value quite ditterent from the dosed liquid turn on the dosing device at its maximum capacity without the controller in the loop 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 the maximum slope in EC or TDS per minute Turn the system power off 3 On the chart draw a tangent to the maximum slope point unt
17. 2 Relay 1 setpoint S1 0 5 to 99 5 full scale 25 no upper limit O_VARMAX O VARMIN gt O VARMAX 5 f s 13 Relay 1 hysteresis H1 0 to 5 f s I fs no If M1 3 thenS1 D1 lt HA If M1 4 then S1 D1 gt LA If M2 1 then S2 H25LA If M2 2 then S2 H2 lt HA If M2 3 then S2 D2 lt HA If M2 4 then S2 D25LA lf M1 1 and M2 2 then S1 H12524 H2 S2 gt LA HA S1 M1 2 and M2 1 then S2 H2 gt S1 H1 S1 gt LA HA S2 If M1 3 and M2 2 then 12524 H2 S22LA HA gt S1 D1 M1 2 and M2 3 then 1 H1 S2 S12LA HA gt S2 D2 M1 4 and M2 1 then 1 lt S2 H2 S1 D1 LA HA S2 M1 1 and M2 4 then S1 H1 S2 S2 D2 gt LA HA S1 If M1 3 and M2 4 then 1282 2 D221A HA gt S1 D1 M1 4 and M2 3 then S2 gt S1 S1 D1 gt LA HA S2 D2 where the minimum deviation D1 or D2 is 0 5 of the maxi mum range value When a wrong setup value is confirmed the controller does not skip to the next setup item but remains in the current item dis playing a flashing ERROR indicator un til the parameter value is changed by the user the same is also true for the setup code selection 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 0 mS the hig
18. 22 HI 710221 and HI 710222 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 Electromagnetic Compatibility Generic Immunity Standard IEC 61000 4 2 Electrostatic Discharge TEC 61000 4 3 RF Radiated IEC 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 25 1 1999 6 acm P Cesa 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 60 06 To 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 t
19. A ON 0 1 mA OFF a Choice between different ranges with the same configuration for example 0 20 mA and 4 20 mA is achieved via soft ware by entering the setup mode and selecting code 40 see Setup Mode section for exact procedure Factory default is switches 1 and 3 closed ON and switches 2 and 4 open OFF i e 0 20 mA 4 20 mA and 0 10 VDC 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 out put correspond to the minimum and maximum of the selected range of the meter For example for the HI 700221 with a selected 0 to 1999 uS range and analog output of 4 20 mA the default values are O and 1999 uS corresponding to 4 and 20 mA respectively 27 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 instrument is in idle mode the red and green status LEDs are on HI 700 CAL HANNA instruments Idle mode is useful to disable control actions when the exter nal devices are not installed or when the user detects unusual circumstances Control actions are stopped as soon SETUP as the user presses SETUP and enters the password In order to rea
20. HI 700 HI 710 Series Process Panel mounted Microprocessor based Conductivity and TDS Controllers Instruction Manual HANNA instruments Dear Customer TABLE OF CONTENTS Thank you for choosing a Hanna Product PRELIMINARY EXAMINATION 0 0 0 220005 4 This instruction manual has been written for the following GENERAL DESCRIPTION 0 4 products HI 700221 a EC controller with dual setpoint ON OFF FUNCTIONAL DESCRIPTION 6 0 MECHANICAL DIMENSIONS 0 00000 e ee ee 7 HI 700222 a EC controller with dual setpoint ON OFF and PID controls RS485 port SPECIFICATIONS s 25 253 ph Ree Hae RR RR RC 8 INSTALLATION iua bt nd Rer RUE had 4 P SR 7 HI 710221 6 EC and TDS controller with dual setpoint ON OFF and PID controls analog output SETUP MODE 0 eee n nn 12 HI 710222 a EC and TDS controller with dual setpoint 6 18 ON OFF and PID controls RS485 port 4 2d bebo bet d bees qus 26 a 1 means 115 Vac 50 60 Hz power supply ANALOG 2 7 6 2 means 230 Vac 50 60 Hz power supply RS 485 COMMUNICATION 2 29 CALIBRATION os inerte etuer d Doe ree Oe 36 Please read this instruction manual carefully before using the LAST CAUBRATIORN DATA ca es don ac nears sd 44 instrument It will provide you with the necessary information Pe FAULT CONDITIONS AND SELFTEST PROCEDURES 45 forthe correct use of the instrument as well as a precise idea
21. OMPENSATES 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 where the first term represents the proportional action the second is the integrative action and the third is the derivative action DAC sP 5Q amp PI SO K J et F PWM to relays EC or TDS input 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 following Kp 100 PB 100 Controller output Proportional Band 2 control a low conductivity dosing pump ON OFF gt Setpoint Setpoint EC Hysteresis PID control is 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 derivative control methods With the proportional function the duration of the activated control is proportional to the error value Duty Cycle Control Mode as the measurement approaches setpoint the ON period diminishes The following graph describes the EC TDS process controller behavior Similar graph may apply to the controller iF iT 2 445 During proportional control the process controller calculates the relay activation time at certain moments titer Li t2 etc The ON interval
22. 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 1413 pS into a beaker If possible use a plastic beaker to minimize 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 To obtain accurate readings use the calibration solution in the selected range and closer to the values to be measured CALIBRATION EC CALIBRATION Initial Preparation 36 e Press LCD to display the current cell constant on the pri mary LCD factory default value is 2 000 cm br LI LI 1L Press SETUP key e Using ft and enter the probe cell constant the value must be between 1 333 and 4 000 cm and con firm by pressing CFM I the entered cell constant value is invalid the ERROR indi cator blinks on the LCD 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 memo rized standards e Press CAL to enter calibration mode The LCD will show O Press SETUP key Using tt
23. a Tel 21 4584 2941 Fax 21 4584 2942 Japan Tel 03 3258 9565 Fax 03 7 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 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 Fax 01525 853 668 USA Tel 401 765 7500 Fox 401 765 7575 For additional Technical Support in your local language see www hannainst com MANHI7OOR3 11 05
24. ad optional isolated 4 20 mA 750 Q maximum load optional isolated 0 5 VDC 1 KQ minimum load optional isolated 1 5 VDC 1 KQ minimum load optional isolated 0 10 VDC 1 KQ minimum load optional Real time clock PRELIMINARY EXAMINATION Remove the instrument from the packing material and exam ine it carefully to make sure that no damage has occurred during shipping If there is any noticeable damage notify your Dealer or the nearest Hanna Customer Service Center immediately Save all packing materials until you are sure that the instru ment functions correctly Any damaged or defective items must be returned in their original packing materials together with the supplied accessories GENERAL DESCRIPTION HI 700 and HI 710 series are real time microprocessor based EC or TDS controllers They provide accurate measurements flexible ON OFF or proportional control ca pabilities analog input and output 855485 port 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 MAIN FEATURES OF DIFFERENT MODELS Display large LCD with 4 2 17 mm digits and 3 1 2 10 mm digits LEDs four LEDs are provided for signaling the energizing of relay 1 and 2 yellow LEDs and alarm relays a green and a red LED Relays 1 or 2 output relays for low conductivity or high conductivity dosage
25. ctivate the control mode use code 02 of setup see Setup section Otherwise the meter remains in idle mode IDLE MODE 26 RS 485 COMMUNICATION HI 700222 and HI 710222 are provided with an RS485 port RS485 standard is a digital transmission method that allows long lines connections Its current loop system makes this standard suitable for data transmission in noisy environments Data transmission from the instrument to the PC is possible with the HI 92500 Windows compatible application soft ware offered by Hanna Instruments The user friendly HI 92500 offers a variety of features such as logging selected variables or plotting the recorded data It also has an on line help feature to support you throughout the operation HI 92500 makes it possible for you to use the powerful means of the most diffused spreadsheet programs Excel Lotus 1 2 3 etc Simply run your favorite spread sheet and open the file downloaded by HI 92500 It is then possible to elabo rate the data with your software e g graphics statistical analysis To install HI 92500 you need a 3 5 drive and few minutes to follow the instructions conveniently printed on the disk s label Contact your Hanna Dealer to request a copy The RS485 standard is implemented in with the following char acteristics Data rate up to 9600 bps Communication Bi directional Half Duplex Line length upto 1 2 Km typ with 24AWG cable
26. d down arrow keys The C symbol will blink on the LCD All external cables to be connected to the rear panel should be ended with cable lugs Analog output Connect an external recorder with a 2 wire cable to these terminals 2 on page 7 paying attention to the correct polarity A wide variety of output signals either in V or in mA is available to fit most standards Contact and 2 Connect the dosing devices to these terminals 5 and 8 on page 7 in order to activate and deactivate them according to the selected control param eters mA Input to switch to mA input signal from a conductivity transmitter e g HI8936 HI98143 LS or HI98144 series see setup procedure code 40 6 Connect the two signal wires from the trans E mitter to terminals 12 on page 7 paying at tention to the correct polarity An unregulated 10 to 30 VDC 50 mA max POWRRSHFPLY power supply output 11 on page 7 is pro 10 vided to power the transmitter if needed Ne 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 Note Note e Power Supply Connect a 3 wire power cable D to the terminal strip while paying attention lN to the correct live L earth PE and neu tral N terminal connections 5 Pow
27. ds received from a master device e g an indus trial PC connected to the line CONNECTIONS 30 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 Atter a recognized PWD command is received the controller allows a maximum of 1 minute without receiving data after which it locks again and a new PWD command is needed to perform password protected operations Following are examples of commands for setup items 1 03 SET22 01200 CR This command sets the setup item 22 relay 2 setpoint of a EC controller identified by the process ID number 03 to the 12 00 mS value 2 01 SET 33 00500 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 5 minutes The 0 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 performs the requested task STX Hex O2 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 password was not sent the con
28. e the password procedure Select code via the arrow keys for temperature calibra tion and confirm with CFM CAL will blink on the LCD The mea sured temperature will be displayed on both the primary and secondary EDEN LCD LUL 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 If 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 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 non volatile memory EEPROM 40 value shown on the secondary display 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 When adjusting values using the or amp keys it is important to allow for sufficient response time up to 30 seconds The table below lists the values
29. er 115 Vac 100 mA 230 Vac 50 mA Live Contact fused inside 400 mA PE leakage current 1 mA this contact must be con nected to ground PE e Conductivity input the default input is from conductivity probe Connect the EC probe to the terminals 10 on page 7 Connect the cable shield to pin 1 and the other four wires according to the following table EC TDS PROBE Color Pin e Ghia GREEN 2 el WHITE 3 ols RED 4 6 4 BLUE 5 5 e Pt 100 Terminals these contacts 9 on page 7 connect the Pt 100 temperature sensor for automatic temperature compensation of measurement The HI7639 EC TDS probe has a built in 3 wire Pt 100 sensor to be connected ac cording to the following table Color Pin Pt 100 GRAY 6 6e BROWN 7 70 8 8 YELLOW 8 Sls uid If using a different Pt 100 separated from the conductivity probe connect the cable shield to pin 9 and the other wires as explained below v In the case of a 2 wire sensor connect the Pt 100 to pins 6 and 8 and short pins 7 and 8 with a jumper wire Pt 100 00 6 8 0 4 Shield Then confirm the displayed digit with gt and move to the next one When the whole password has been inserted press CFM to confirm it The default password is set at 0000 The LCD will display SET on the upper part and c 00 on the lower allowing the user to edit
30. essage Fan Merry COU ILI Relays and LEDs test has to be carried out with the relay contacts disconnected from external plant devices 47 EEPROM SELFTEST RELAYS AND LEDS Note scrolling Display test message b The segments are lit for a few seconds and then switched off before exiting the selttest procedure 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 L LI ru Lr 1 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 For example if CFM and CAL DATA are pressed together the LCD will look like this The colon is a useful indicator for the correct position of squares A maximum of two keys may be pressed simultaneously to be properly recognized To exit the keyboard test LCD CAL procedure press LCD CAL es and SETUP simultaneously KEYBOARD SELFTEST Note 46 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 m
31. eter fulfills the following main tasks converts information from EC TDS and temperature inputs to digital values controls relays and generates the analog outputs as deter mined by the setup configuration displays alarm condition In HI 710 models 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 700 models display EC only The status of the meter is shown by the LED s on the right STATUS LEDs Control Alarm Alarm LED green Relay LED yellow Red LED OFF ON OFF ON ON OFF ON ON or OFF OFF ON ON OFF ON or OFF Blinking Meter exits control mode by pressing SETUP or CAL and confirming the password Note that this command generates a temporary exit To deacti vate the control mode definitively 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 4 PID high setpoint high conductivity dosage RELAY MODES dition 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 graphic EC low rate N proper rate sting p gt RATE ACTION C
32. f s no 00 Factory ID 6 0000 hi 25 Relay 2 reset time 0 1 to 999 9 minutes 999 9 no O1 Process ID 01097 00 26 Relay 2 rate time 0 0 to 999 9 minutes 0 0 no 02 Control enable disable i aue 0 no 30 Relay 3 high alarm HA 0 5 to 99 5 full scale 95 fs no PRISE HA Hys gt LA Hys Hys 1 596 s HA ST or HA gt S2 03 Ronge 1 0 0 199 9 US or 100 0 ppm 4 4 31 Relay 3 low alarm LA 0 5 to 99 5 full scale 50f s no depends on model 2 0 1999 LIS or 1000 ppm LA Hys lt HA Hys Hys 1 5 Fs LA lt S1 or LA lt S2 3 0 00 19 99 mS or 10 00 ppt ASME LD me ins POR 4 0 0 199 9 mS or 100 0 ppt 32 Proportional control 1 to 30 min 5 no mode period 04 Reference Temperature 20 C or 25 C 25 C no 7 0 33 Maximum relay ON time 10 to 9999 min 6 no 05 Temperature Coefficient 0 00 to 10 00 C 2 00 no after which an alarm mode is entered 06 Input Selection 0 conductivity probe 0 no 34 Alarm mask time 00 00 to 30 00 00 00 no 1 4 20 mA input signal 40 Analog output selection 0 0 1mA 2 07 Temperature ATC Automatic ATC no Deen i En m o compensation User Manual 2 4 20 mA 08 TDS Factor HI710 only 0 00 to 1 00 0 50 no 3 0 5 VDC 4 1 5 VDC 11 Relay 1 mode 0 disabled 0 no 5 0 10 VDC M1 1 ON OFF high setpoint 2 ON OFF low setpoint 41 Analog output 0 to 100 full scale 0 no 3 PID high setpoint lower limit 0 VARMIN O VARMIN lt O VARMAX 5 f s 4 PID low setpoint 42 Analog output 0 to 100 full scale 100 fs no 1
33. fter password and CFM are pressed When CFM is pressed the current setup item is saved on EEPROM and the following item is displayed Whenever LCD is pressed the de vice reverts back to control mode LCD The same is true when CFM is C AE pressed on the last setup item The possible transitions in setup mode are the following SETUP MODE 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 Enterthe first value of the pass word by the 1 or amp keys After confirmation the selected parameter Cod Valid Val Default PW is displayed The user can scroll through the parameters by pressing CFM 14 Relay 1 deviation D1 0 5 to 10 s I fs no In orderto directly set another param 15 Relay 1 reset time 0 1 to 999 9 minutes 999 9 no eter press SETUP again and enter the 16 Relay 1 rate time 0 0 to 999 9 minutes 0 0 no code or scroll to it by pressing CFM 21 Relay 2 mode M2 same as relay 0 no The following table lists the setup codes along with the descrip tion of the specific setup items their valid values and whether 22 Relay 2 setpoint S2 0 5 to 99 5 full scale 5 no password is required to view that item PW column 23 Relay 2 hysteresis H2 Oto 5 fs ii Code Valid Values Default PW 24 Relay 2 deviation D2 0 5 to 10 f s 106
34. h alarm must be set to a value greater than 10 0 mS first Code Valid Values Default PW 60 Current day 01 to 31 from RTC no 61 Current month 01 to 12 from RTC no 62 Current year 1998 to 9999 from RTC no 63 Current time 00 00 to 23 59 from RTC no 71 Baud rate RS485 1200 2400 4800 9600 9600 no 72 Cleaning timer 0 to 19999 days 0 no 73 Initial cleaning day 01 to 31 01 no 74 Initial cleaning month 72 01 no 75 Initial cleaning year 1998 to 9999 1998 no 76 Initial cleaning time 00 00 to 23 59 00 00 no 77 Cleaning ON interval 0 to 19999 minutes 0 no 90 Display selftest 0 off 0 yes on 91 Keyboard selftest 0 off 0 yes on 92 EEPROM selftest 0 off 0 yes 93 Relays and LEDsselftest 0 off 0 yes lon Note 94 Watchdog selftest 0 off 0 yes on 99 Unlock password 0000 to 9999 0000 yes The process controller automatically checks to ensure that Note the entered data matches other related variables If a wrong contiguration is entered ERROR blinks on the LCD to prompt the user The correct configurations are the following If M140 then S1 HA S1 gt LA If M240 then S2 lt HA S22LA If M1 1 then S1 H12LA If M1 2 then 5 H1 lt HA Note 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 t
35. he rear panel should be terminated with cable lugs 55 All Hanna Instruments meters are guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions The probes are guaranteed for a period of six months This warranty is limited to repair or replacement 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 pur chased 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 lf the instrument is to be returned to Hanna Instruments first obtain a Returned Goods Authorization number from the Cus tomer Service department and then send it with shipping costs prepaid When shipping any instrument make sure it is properly packaged for complete protection Hanna Instruments reserves the right to modify the design construction and appearance of its products without advance notice WARRANTY 54 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 Indonesi
36. hrough setup procedure When the maximum boundary is reached an alarm is generated 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 relay setpoint US mS ppm value Dese relay hysteresis US mS ppm value D e Connect your device to the COM and NO No Normally Open or NC Normally Closed terminals Sem 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 from the following graphs is energized when the EC value is below the setpoint and is de energized when the EC value is above the sum of setpoint and the hysteresis The low setpoint relay may be used to CONTROL MODE The control mode is the normal operational mode for these meters During control mode the m
37. il intersection with the horizontal line corresponding to the initial EC or TDS value Read the system time delay Tx on the time axis EC 7 or TDS max slope time 4 The deviation Ti and Td can be calculated from the following Deviation Tx max slope EC TDS Ti Tx 0 4 minutes Td Tx 0 4 minutes 5 Set the above parameters and restart the system with the controller in the loop If the response has too much over shoot or is oscillating then the system can be fine tuned slightly increasing or decreasing the PID parameters one at a fime Connecting an external device e g chart recorder to the controller the procedure is easier and doesn t need the use of hand plotting the process variable EC or TDS 23 Note 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 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 Td 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
38. ll blink Selectthe solution value on the primary display by pressing 1 or amp if the selected range has LA CS two possibilities e g 5 000 and 12 880 mS Immerse the EC TDS probe with the temperature sensor in the selected solution The level of solution must be higher than the holes of the probe sleeve Tap the probe repeat edly on the bottom of the beaker and stir to ensure that no air bubbles are trapped inside the sleeve e When the reading is stable CAL will stop flashing after about 30 sec onds and the READY and CFM indicators will blink 37 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 stan dardize the probe with the Hanna calibration solution close to the expected sample value and inside the selected range The calibration points are as follows Range Calibration point s 0 0 to 199 9 uS 84 0 US Oto 1999 uS 1413 uS 0 00 to 19 99 mS 5 00 12 88 mS 0 0 to 199 9 mS 80 0 111 8 mS 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
39. ode Otherwise an EEPROM check sum test is performed the same is performed during EEPROM selttest 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 un calibrated meter can perform measurement though user is informed that EC or TDS calibration is needed by means of a blinking CAL When the last calibration data is re quired the no CAL message is na displayed if no calibration procedure was performed Unlike EC TDS calibration the user has no information 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 49 STARTUP When a dead loop condition is detected a reset is automati cally 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 maintenance procedures When the relevant digital in
40. oisolated from measuring circuit and power line The analog output and RS485 port have the same ground The commands sent to the controller must have the following format 2 digit process ID number e 3 character command name Parameters variable length may be null End of command always the CR character Hex OD A 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 orto simply ask information on the controller status Following is the complete list of commands available 31 RS485 PROTOCOL The connections for the 6 pin RS485 terminal provided 1 on page 7 are as follows RS485 DODDS There is an internal short between the two A pins and be tween the two B pins The instrument has no internal line termination To terminate the line an external resistor equal to the characteristic line impedance typically 120Q must be added at both ends of the line RS485 line 1200 1200 I i I Unit 1 Unit n 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 interferences use shielded or twisted pair cable to connect the units Each unit is identitied by its process ID number setup item gl The controller acts as a slave device it only answers to comman
41. ontroller must be intact and there must be no points of broken insulation on the cable Connectors must be pertectly clean and dry CLEANING PROCEDURE Rinse the probe with tap water If a more thorough cleaning is desired remove the sleeve and clean the platinum sensors with a non abrasive cloth or HI7061 cleaning solution Re insert the sleeve in the same direction as before Recalibrate the instrument before reinserting the probe in the system Always recalibrate the instrument when attaching a new probe 51 Note EC VALUES AT VARIOUS TEMPERATURES Temperature has a significant effect on conductivity Table below shows EC values at various temperatures for the Hanna calibration solutions TEMPERATURE HI7039 HI8039 2760 3180 3615 4063 4155 4245 4337 4429 4523 4617 471 4805 4902 5000 5096 5190 5286 5383 5479 5575 EC VALUES uS cm HI7030 HI031 HI7033 HI7034 HI7035 HI8030 HIB031 HI8033 HI8034 HIB035 7150 76 4 4830 65400 820 896 5 53590 7400 9330 1000 67 59600 83200 10480 1147 68 65400 92500 10720 173 70 00 9400 10950 1199 71 68500 96300 1190 125 73 69800 98200 14330 1251 74 71300 100200 11670 78 76 7200 102100 11910 1305 78 74000 104000 12150 1332 79 75200 105900 12390 1359 81 76500 107900 12040 1386 82 78300 109800 12880 1413 84 80000 111800 13130 1440 86 81300 113800 1370 146 87 83000 115700
42. or again to view the cell constant at the time of last calibra tion The secondary display will show CEL Press ff or again to return to the first CAL DATA display date at the time of last calibration Note 4 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 before exiting selftest procedure Dai Ar LL NE If not the message Stored data error Press ff to reset stored data or to ignore If is pressed the EEPROM selftest procedure terminates with no other action Otherwise EEPROM is reset with de fault values from ROM as when a device with a virgin EEPROM is switched on During EEPROM reset a blinking mes r sage Set is shown on primary LCD 4 the secondary LCD displays MEM n At the end of this operation all the pa rameters are reset to their default values The calibrated cell constant is also reset For this reason the CAL tlag blinks until the EC TDS calibra tion is performed MEINEN nu ad 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 m
43. rm threshold This additional feature will avoid fake or temporary alarm condi tions If the 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 elimi nate 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 Note ALARM RELAY 24 ANALOG OUTPUT HI 700221 and HI 710 221 models are provided with the analog output feature The output is isolated and can be a voltage or a current With the recorder simply connect the common port to the ground output and A 5 the second port to the current output B or voltage output depending on which Co m parameter is being used as depicted sole aside The type voltage or current and the range of the output analog signal is selectable through the jumpers on the power board Configurations of the switch are as follows Output Switch 1 Switch 2 Switch 3 Switch 4 0 5 VDC 1 5 VDC OFF ON 0 10 VDC ON OFF 0 20 mA 4 20m
44. ser to confirm the calibration e f the reading stabilizes at a reading significantly variant from the first calibration point an intermittent ERROR will prompt the user to check the input f everything is satisfactory the sec inn ondary LCD will display 20 for the second calibration point PES en 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 Press CFM to confirm The meter will return to normal operational mode EJ 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 non volatile memory EEPROM 41 TEMPERATURE CALIBRATION The controller is factory calibrated for temperature 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 reso lution 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 temperature calibra E m tion mode Execut
45. setup param eters see table below Enter the code of the parameter you want to set using the arrow keys as per the password procedure above 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 TT LF Enter the desired value using the arrow keys and then press CFM r v Note Note HI 700 and HI 710 offer a multitude of possibilities from ON OFF or PID dosage to analog recorder output and from alarm to selftest features 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 is in idle or control mode LF 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 Each setup parameter or setup item is assigned a two digit setup code which is entered and displayed on the secondary LCD The setup codes can be selected a
46. sulated HOLD input terminals 6 on page 7 is on the ana te log output is frozen at its last value and control Q and alarm relays are disabled The Hld indi cation 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 LCD pressing the right arrow key Only when the key C is released the secondary LCD returns auto matically after a few seconds to the Hld indication HOLD FUNCTION PRESETTABLE TIMER CLEANING FUNCTION Atimer is presettable by software to close a digi TIMER tal insulated contact terminals 5 on page 7 6 after a user programmable time interval with a 0 minimum interval of 1 day e g for probe clean ing function The time interval 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 The starting time of the cleaning timer can be set through setup codes 73 74 75 and 76 48 PROBE MAINTENANCE Probe can be compensated for normal contamination by a process of recalibration When calibration can no longer be achieved remove the conductivity probe from the system for maintenance PERIODIC MAINTENANCE Inspect the probe and the cable The cable used for the con nection to the c
47. 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 buffer solution 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 the default offset of 0 Note Note Note Note Note Note ANALOG INPUT CALIBRATION The analog input is already factory calibrated However the user may also perform a 2 point 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 12 at page 7 Press and hold first CFM and then CAL to enter the analog input cali ES bration mode Execute the password procedure Select code O via the arrow keys for analog input calibra tion and confirm with CFM CAL will blink on the LCD The secondary LCD will display 4 forthe first calibration point The pri mary LCD will display the conductivity reading Set the mA simulator to 4 mA and wait for the reading to stabilize CAL will stop blinking and an intermittent CFM will prompt the u
48. tion solution 500 mL bottle HI 8030L 12880 uS cm calibration solution 500 mL FDA bottle HI 7031M 1413 uS cm calibration solution 230 mL bottle HI 7031L 1413 uS cm calibration solution 500 mL bottle HI 8031L 1413 uS cm calibration solution 500 mL FDA bottle HI 7033M 84 uS cm calibration solution 230 mL bottle HI 7033L 84 uS cm calibration solution 500 mL bottle HI 8033L 84 uS cm calibration solution 500 mL FDA bottle HI 7034M 80000 uS cm calibration solution 230 mL bottle HI 7034L 80000 uS cm calibration solution 500 mL bottle HI 8034L 80000 uS cm calibration solution 500 mL FDA bottle HI 7035M 111800 uS cm calibration solution 230 mL bottle HI 7035L 111800 uS cm calibration solution 500 mL bottle HI 8035L 111800 uS cm calibration solution 500 mL FDA bottle HI 7039M 5000 uS cm calibration solution 230 mL bottle HI 7039L 5000 uS cm calibration solution 500 mL bottle HI 8039L 5000 uS cm calibration solution 500 mL FDA bottle PROBE CLEANING SOLUTIONS HI 7061M General cleaning solution 230 mL bottle HI 8061M General cleaning solution 230 mL FDA bottle General cleaning solution 500 mL bottle HI 8061L General cleaning solution 500 mL FDA bottle 52 CE DECLARATION OF CONFORMITY BEN 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 700221 HI 7002
49. troller is in setup mode the setup item is not available in that model etc 33 Description Note Request calibration data Request setup item NN Note Same as CFM CAL keys Same as LCD CAL SETUP keys Same as CAL DATA key Same as CFM key Same as CAL key Same as LCD key Same as key Same as key Same as SETUP key Same as 17 key Request firmware code Request EC reading in control or idle mode only Request TDS reading HI 710 models only available in control oridle mode only Request measure Range in control or idle mode only Request temperature reading Send the 4 digit password Set setup item NN to the PC CICIC C value if value is greater than 0 P if value is less than 0 C can be O or 1 only C C C C can be 0 9 or blank the command is not available if the controller is in setup mode Parameter nul NN nul nul nul nul nul nul nul nul nul nul nul nul nul null null NNNN C C C C Command CAR GET KOI K02 KCD KCF KCL KDS KDW KRG KST KUP MDR ECR TDR RNG TMR PWD SET 32 control action is active no alarm condition is present and controller setup is moditied must update controller setup for PC GET command for setup items If asking for 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
Download Pdf Manuals
Related Search