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Hanna Instruments pH 500 Series, Instruction Manual

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Hanna Instruments pH 500 Series Instruction Manual Download Page 14

27

26

CALIBRATION

The controller is factory calibrated for mV and temperature
inputs as well as for the analog outputs.

The user should periodically calibrate the instrument. For great-
est accuracy, it is recommended that the instrument is calibrated
frequently.

It is possible to standardize the electrode with only one buffer,
preferably close to the expected sample value (one-point cali-
bration), but it is always good practice to calibrate in at least
2 points.

pH CALIBRATION (for pH 500 Series only)

The pH controller can be calibrated through a one-point,
two-point or three-point calibration. You do not need to en-
ter the method chosen, simply exit the
calibration mode, by pressing CAL,
when the desired number of points has
been calibrated.

The calibration points for pH 500 are pH 4.01, pH 7.01 and
pH 10.01 (at 25°C). The sequence proposed by the control-
ler is pH 7.01, pH 4.01, pH 10.01. However, the user can
change this sequence by means of the   and   keys.

The electrode must be kept hydrated at all times and defi-
nitely prior to calibration. The temperature probe should also
be connected to the process meter. The meters are equipped
with a stability indicator. The user is also guided with indica-
tions on the display during the calibration procedure.

Initial Preparation

Pour small quantities of pH 7.01
(

HI 7007

) and pH 4.01 (

HI 7004

)

and/or pH 10.01 (

HI 7010

) solutions

into individual beakers. If possible, use
plastic beakers to minimize any EMC
interference.

HI 7007

HI 7004

HI 7004

Excel

©

 Copyright of “Microsoft Co.”

Lotus 1-2-3

©

 Copyright of “Lotus Co.”

Windows

®

  and Windows Terminal

®

 are registered Trademark of “Microsoft Co.”

Note

Cables other than 

HI 920010

 may use a different configu-

ration. In these cases, no communication between the meter
and the PC is possible. If you are not using the 

HI 920010

cable, contact the nearest Hanna Customer Service Center
or proceed as follows for a proper electrical connection:

pH 500/mV 600

PC

9-pin DSUB male connector

9-pin DSUB female connector

Pin 2

Pin 3 (Txd)

Pin 3

Pin 2 (Rxd)

Pin 4

Pin 6 (Txd)

Pin 5

Pin 5 (Gnd)

Pin 6

Pin 4 (DTR)

Pin 7 short circuit with 8

(RTS+CTS)

pH 500/mV 600

PC

9-pin DSUB male connector

25-pin DSUB female connector

Pin 2

Pin 2 (Txd)

Pin 3

Pin 3 (Rxd)

Pin 4

Pin 6 (Txd)

Pin 5

Pin 7 (Gnd)

Pin 6

Pin 20 (DTR)

Pin 4 short circuit with 5

(RTS+CTS)

SETTING THE BAUD RATE

The transmission speed (baud rate) of the meter and the
external device must be identical.

The meter is factory set to 4800. If you wish to change this
value, use item 71 in the setup mode (see page 14).

Summary of Contents for pH 500 Series

Page 1: ...pH 500 mV 600 Series Panel mounted Microprocessor based pH and ORP Controllers Instruction Manual ...

Page 2: ...122 α α α α α pH controller with single setpoint proportional and ON OFF controls RS232 output pH 500211 α α α α α pH controller with dual setpoint ON OFF control analog output pH 500212 α α α α α pH controller with dual setpoint ON OFF control RS232 output pH 500221 α α α α α pH controller with dual setpoint proportional and ON OFF controls analog output pH 500222 α α α α α pH controller with dua...

Page 3: ...til 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 The product is a real time microprocessor based pH ORP controller It provides accurate measurements flexible ON OFF or proportional control capabilities and dual alarm signals The system is composed ...

Page 4: ...es with the measure ment on the display In pH 500 series during pH calibration alternately displays pH buffer value or current temperature 3 SETUP key enters setup mode 4 CAL DATA key last calibration data viewing enters and exits 5 CAL key initiates and exits calibration mode 6 key increases the blinking digit letter by one when selecting a parameter Advances forward while in last calibration dat...

Page 5: ...only 20 C 68 F 2 mV mV600seriesonly 0 5 C TypicalEMCDeviation 0 2 pH pH500seriesonly 10 mV mV600seriesonly 0 5 C Calibration pH automatic 1 2 or 3 point at pH 4 01 7 01 10 01 ORP automatic 2 point at 0 and 350 or 1900 mV Temperature Compensation pH 500 series only automatic with Pt100 probe or manual 9 9 to 120 C Outputs digital RS232 bi directional optoisolated or analog galvanically isolated 0 1...

Page 6: ...or keys PowerSupply Connecta3 wirepowercable to the terminal strip while paying attention to the correct line L earth PE and neu tral N terminal connections Power 115VAC 100 mA 230VAC 50 mA Line Contact fused inside 400 mA PE must be connected to ground leakage current 1mA Electrode Connect the pH or ORP electrode to the BNC socket 10 at page 7 To benefit from the differential input connect the pr...

Page 7: ... mode M2 same as relay 1 0 no 22 Relay 2 setpoint S2 0 00 to 14 00 pH 6 00 pH no 2000 to 2000 mV 500 mV 23 Relay 2 hysteresis H2 0 00 to 14 00 pH 1 pH no 0 to 4000 mV 50 mV 24 Relay 2 deviation D2 0 50 to 14 00 pH 1 pH no 25 to 4000 mV 50 mV Available only in models with two relays Then confirm the displayed digit with and move to the next one When the whole password has been inserted press CFM to...

Page 8: ...then S1 S2 H2 S1 D1 LA HA S2 If M1 1 and M2 4 then S1 H1 S2 S2 D2 LA HA S1 If M1 3 and M2 4 Code Valid Values Default PW 30 Relay 3 high alarm HA 0 00 to 14 00 pH 9 00 pH no 2000 to 2000 mV 600 mV HA LA HA S1 or HA S2 31 Relay 3 low alarm LA 0 00 to 14 00 pH 5 00 pH no 2000 to 2000 mV 600 mV LA HA LA S1 or LA S2 32 Proportional control 1 to 30 min 5 no mode period 33 Maximum relay ON time 10 to 99...

Page 9: ...roportional low setpoint base dosage if available 4 proportional high setpoint acid dosage if available then S1 S2 S2 D2 LA HA S1 D1 If M1 4 and M2 3 then S2 S1 S1 D1 LA HA S2 D2 where the minimum deviation D1 or D2 is 0 5 pH for pH 500 or 25 mV for mV 600 Note The password cannot be viewed when SETUP is pressed without entering the original password first The default password is set at 0000 In th...

Page 10: ...er boundary is imposed for acid base dosage time when relays are energized continuously i e when relay works in ON OFF mode or in proportional mode but in the latter case only if the relay is always ON This parameter can be set through setup procedure When the maximum boundary is reached an alarm is generated device stays in alarm condi tion until relay is de energized ON OFF CONTROL MODE Either f...

Page 11: ...ll also provide a visual warning sig nal The Fail Safe 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 pH goes over the alarm thresholds the power breaks down and in case of a broken wire between the process meter and the external alarm circuit Note In order to have the Fail Safe feature a...

Page 12: ...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 range of the meter For example for the pH 500 series with a se lected analog output of 4 20 mA the default values are 0 00 and 14 00 pH correspondi...

Page 13: ...0010 cable Make sure that your meter is switched off and plug the connectors one to the meter RS232 connector and the other to the serial port of your PC If your interface does not fully comply with the RS232 stan dard wiring could be different The GND pin of the interface connector and all the inter face signals are optoisolated from the ground of the instrument the pH electrode and the temperatu...

Page 14: ...dicator The user is also guided with indica tions on the display during the calibration procedure Initial Preparation Pour small quantities of pH 7 01 HI 7007 and pH 4 01 HI 7004 and or pH 10 01 HI 7010 solutions into individual beakers If possible use plastic beakers to minimize any EMC interference HI 7007 H I 7 0 0 4 HI 7004 Excel Copyright of Microsoft Co Lotus 1 2 3 Copyright of Lotus Co Wind...

Page 15: ...value For best accuracy however it is recommended that a two point calibration is performed HI 7007 CALIBRATION HI 7007 RINSE For accurate calibration use two beakers for each buffer solution the first one for rinsing the electrode the second one for calibration By doing this contamination between the buffers is minimized To obtain accurate readings use pH 7 01 and pH 4 01 if you measure acidic sa...

Page 16: ...bration Two point Calibration Proceed as described above for one point cali bration usingpH 7 01asthefirstpoint butdo notquitcalibrationbypressingCALattheend Note The meter will automatically skip the buffer that was used for the first calibration to prevent errors After the first calibration point is con firmed immerse the pH electrode with the Potential Matching Pin into the sec ondbuffer e g pH...

Page 17: ...ady reading CALIBRATION WITH MANUAL TEMPERATURE COMPENSATION Enter the calibration procedure and press LCD to display the temperature on the secondary LCD Unplug any temperature probe that may be attached to the meter The C sym bol will flash Note the temperature of the buffer solutions with a ChecktempC or an accurate thermometer with a resolution of 0 1 C Use or to manually adjust the display re...

Page 18: ...zed at a point near the first calibration point CAL will stop blinking and an intermittent CFM icon will prompt the user to confirm the first calibration If the display stabilizes at a value significantly different from the first setpoint an intermittent WRONG icon will prompt the user to check and adjust the simulator and start again After pressing CFM the unit will switch to the second cali brat...

Page 19: ... type Immerse the temperature probe in the second beaker as near to the Checktemp as possible and repeat the above procedure 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 ANALOG OUTPUT CALIBRATION In the ...

Page 20: ...time of calibration and the values of the 2 calibration points Dis playing of these items follows the above sequence To begin the cycle press CAL DATA The last calibration date will appear on the main LCD display as DD MM format while the secondary display will show the year If the meter has never calibrated or an EEPROM reset has occurred no calibration data is shown when CAL DATA is pressed The ...

Page 21: ...lar operating display Press or to view the time of last calibration The sec ondary display will show HOU to indicate hours Press or again to view the offset in mV at the time of last calibration The secondary display will show OFF to indicate offset Press or again to view the first slope in mV at the time of last calibration The secondary display will show SL1 to indicate first slope Press or agai...

Page 22: ...key During the automatic startup the Real Time Clock RTC is checked to see if a reset occurred since last software ini tialization In this case the RTC is initialized with the default date and time 01 01 1997 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 nor...

Page 23: ...n data is also reset For this reason the CAL flag blinks until the pH calibration is performed The error detection for dead loops is performed by watchdog see 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 foll...

Page 24: ...the display should show pH 4 01 7 01 or 10 01 at pH 4 7 or 10 buffers respectively At 20 C the display should show pH 4 00 7 03 or 10 06 The meter reading at 50 C will then be 4 06 6 98 or 9 82 RELAYS AND LEDS 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 interrup...

Page 25: ...eam or tank When not in use replace the solution in the protective cap with a few drops of HI 70300 storage solution or in its absence HI 7007 pH 7 01 buffer solution Follow the Preparation Procedure above before taking mea surements Note NEVER STORE THE ELECTRODE IN DISTILLED OR DEION IZED WATER PERIODIC MAINTENANCE Inspect the electrode and the cable The cable used for the connection to the cont...

Page 26: ...junction Protein Soak in Hanna HI 7073 protein cleaning so lution for 15 minutes Inorganic Soak in Hanna HI 7074 inorganic cleaning solution for 15 minutes Oil grease Rinse with Hanna HI 7077 Oil Fat cleaning solution IMPORTANT After performing any of the cleaning procedures rinse the electrode thoroughly with distilled water drain and refill the reference chamber with fresh electrolyte not neces ...

Page 27: ... change the elec trode to see if the problem is alleviated TAKING REDOX MEASUREMENTS Redox measurements allow the quantification of the oxidizing or reducing power of a solution and are commonly expressed in mV Oxidation may be defined as the process during which a molecule or an ion loses electrons and reduction as the process by which electrons are gained Oxidation is always coupled together wit...

Page 28: ...tein cleaning solution 230 mL bottle HI 7073L Protein cleaning solution 500 mL bottle HI 7074M Inorganic cleaning solution 230 mL bottle HI 7074L Inorganic cleaning solution 500 mL bottle HI 7077M Oil Fat cleaning solution 230 mL bottle HI 7077L Oil Fat cleaning solution 500 mL bottle HI 7071 3 5M KCl AgCl electrolyte solution 4x50 mL bottle for single junction electrodes HI 7072 1M KNO3 electroly...

Page 29: ...5 In addition to the electrode connector there is also a spade lug connection for the matching pin PLATINUM ORP ELECTRODES HI 3090T Screw connector external PG13 5 thread double junction Pt glass body polymer filled HI 3210T Screw connector external PG13 5 thread double junction Pt plastic body cloth junction HI 3211T Screw connector external PG13 5 thread double junction Pt plastic body PVDF junc...

Page 30: ...lectrode connector there is also a spade lug connection for the matching pin OTHER ACCESSORIES BL PUMPS Dosing pumps with flow rate from 1 5 to 20 lph HI 98501 ChecktempC Electronic thermometer range 50 0 to 150 0 C HI 98502 ChecktempF Electronic thermometer range 58 0 to 302 F HI 6050 HI 6051 Submersible electrode holders HI 6054 HI 6057 Electrode holders for in line applications HI 778P Screened...

Page 31: ...p and materials when used for their intended purpose and maintained accord ing to instructions The electrodes and 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 prescribed maintenance are not covered If service is required contact the dealer from whom you purchased the instrume...

Page 32: ...e exceed 24 Vac or 60 Vdc 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 the rear panel should be terminated with cable lugs HANNA LITERATURE Hanna publishes a wide range of catalogs and handbooks for an equally wide range of applications The reference lit erat...

Page 33: ...84 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 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 Fax 401 765 7575 For...

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