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pH/Oxi 340i

Overview

1.4

Display

1.5

Jack field

D. O. probe

pH electrode

pH temperature sensor

Plug-in power supply (optional)

Serial interface RS 232

Sal

1/cm

TDS

Lin

Tref25 Tref20

nLF

Time

Baud

Day.Month No.

Ident

Year

8 .

8 8

Sal

mg/l

LoBat

mbar

UpH

RCL

Auto Store

ARng

Cal

mV/pH

AutoCal DIN

AutoCal TEC

Status display

Meas. value display

Function and
temperature display

Probe symbol

Summary of Contents for pH/Oxi 340i

Page 1: ...ba52314e02 03 2004 pH Oxi 340i ba52314e Operating manual AR RCL STO CAL M O 6 7 1 9 2 7 O C mg l ARng TP pH Oxygen measuring instrument...

Page 2: ...se The instrument warranty covers manufacturing faults that are discov ered within the warranty period The warranty does not cover compo nents that are replaced during maintenance work e g batteries T...

Page 3: ...e 20 4 3 pH calibration 21 4 3 1 AutoCal TEC 23 4 3 2 AutoCal DIN 27 4 3 3 ConCal 30 4 4 Dissolved oxygen 33 4 4 1 General information 33 4 4 2 Measuring the D O concentration 34 4 4 3 Measuring the D...

Page 4: ...40i 4 5 Maintenance cleaning disposal 61 5 1 Maintenance 61 5 2 Cleaning 62 5 3 Disposal 62 6 What to do if 63 6 1 pH system messages 63 6 2 Oxi system messages 65 6 3 General errors 66 7 Technical da...

Page 5: ...for all applications The proven MultiCal calibration procedures and the special Auto Read function support you in your work with the handheld meter Note If you need further information or application...

Page 6: ...40i 6 1 2 SETs of equipment The measuring instrument is also available as part of individual SETs of equipment You will find additional information on this and other accessories in the WTW catalog or...

Page 7: ...Stand 4 RL G cleaning solution for D O probes 50 ml 5 50 ml pH buffer solution STP 4 6 50 ml pH buffer solution STP 7 7 Storing solution for pH electrodes 8 CellOx 325 D O probe with calibration vesse...

Page 8: ...ure Save a measured value STO Switch measuring instrument on off ON OFF Calibrate the currently set measured variable CAL Display transmit measured values RCL Activate deactivate the AutoRead function...

Page 9: ...upply optional 5 Serial interface RS 232 Sal F 1 cm K TDS S m cm cm M Lin Tref25 Tref20 nLF Time Baud Day Month No Ident Year 8 8 8 8 8 8 O Sal C mg l LoBat TP 1 mbar S UpH RCL Auto Store ARng AR Cal...

Page 10: ...to select between the different measuring modes Note When connecting a D O probe with temperature sensor the measur ing instrument recognizes the probe and automatically switches to the last selected...

Page 11: ...ual chapters of this operating manual use the following safe ty labels to indicate various types of danger Warning indicates instructions that must be followed precisely in order to avoid the possibil...

Page 12: ...e formation of condensate can lead to the faulty func tioning of the instrument In this event wait until the temperature of the instrument reaches room temperature before putting the instrument back i...

Page 13: ...ower supply optional Setting the date and time 1 Press the M key and hold it down 2 Press the ON OFF key The display test appears briefly on the display 3 Press the RUN ENTER key repeatedly until the...

Page 14: ...he line voltage at the operating site must lie within the input voltage range of the original plug in power supply see chapter 7 TECHNICAL DA TA Warning Use original plug in power supplies only see ch...

Page 15: ...is supplied by the plug in power supply l if the AutoStore function is active l if the communication cable and a PC with a running communication program are connected l if the printer cable is connect...

Page 16: ...rthed PC printer measurements cannot be per formed in earthed media as incorrect values would result The RS232 interface is not galvanically isolated 1 Connect the pH electrode to the measuring instru...

Page 17: ...r disconnect the 2nd sensor and use the manual temperature input or use an electrode with a temperature sensor If a temperature sensor is connected it is indicated on the display by TP Note When calib...

Page 18: ...erature sensor Options l Determine the current temperature using a thermometer and while keeping the RUN ENTER key depressed en ter this temperature value with l TP display indicator not displayed soc...

Page 19: ...ing the current value by pressing RUN ENTER 3 Start AutoRead with RUN ENTER AR flashes until a stable measured value is reached This measured value is transmitted to the interface 4 If necessary start...

Page 20: ...a test solution 1 Perform the preparatory activities according to section 4 2 1 2 Submerse the ORP electrode in the sample 3 Press the keys until the U status display appears The ORP voltage mV of the...

Page 21: ...nt calibration When doing so the instrument uses the Nernst slope 59 2 mV pH at 25 C and determines the asymmetry of the electrode AutoCal DIN is specially adapted to the permanently programmed buffer...

Page 22: ...ry and slope are evaluated separately The worst evaluation appears on the display CALIBRATION PROTOCOL 02 03 01 14 19 Device No 12345678 Calibration pH Cal time 01 03 01 15 20 Cal interval 7d AutoCal...

Page 23: ...current electrode voltage in mV Note Skip the steps 2 and 7 if you use a pH electrode with a temperature sensor or the temperature sensor of a D O probe 1 Connect the pH electrode to the measuring ins...

Page 24: ...8 S 1 Sal mg l 1 cmSal AutoCal DIN Lin Tref25 nLF RCL Auto Store LoBat ARng AR Time Baud Day Month No Ident Year mbar cm M F K S m cm 8 4 2 t 1 C TP pH C AutoCalTEC cm 3 7 F 0 Cal Tref20 Lin 0 Cal Tre...

Page 25: ...pe mV pH appears on the display The probe symbol shows the evaluation of the current calibration 11 Press the RUN ENTER key The value of the asymmetry mV appears on the display 1 TDS S F 0 Cal Tref20...

Page 26: ...2 Switch to the measuring mode with M Y A S 0 RCL Sal cm AutoCal DIN Time Day Month Sal Store AR 8 No Ident Tref20 Tref25 Year Baud cm C K TP M mbar 1 m mg l cm S TDS 6 Lin Cal 1 S O U nLF Auto LoBat...

Page 27: ...on with while keeping the RUN ENTER key depressed 3 Immerse the pH electrode in the first buffer solution 4 Press the RUN ENTER key The AR display indicator flashes The electrode voltage mV or the buf...

Page 28: ...on 9 Press the RUN ENTER key The AR display indicator flashes The electrode voltage mV or the buffer nominal value ap pears on the display Example AutoCalTEC pH mV TDS O U Tref20 Cal 8 S 1 Sal mg l 1...

Page 29: ...ry mV appears on the display 12 Switch to the measuring mode with M O L S RCL Sal cm AutoCal DIN Day Month S Tref20 Cal Ident No Year Time Baud 1 TDS Sal Store AR Tref25 cm C K TP M mbar 1 m mg l cm S...

Page 30: ...n of the last calibration or no sensor symbol in the de livery state or after the measurement parameter has been re set 2 If required enter the temperature of the first buffer solution with while keep...

Page 31: ...s stable press the RUN ENTER key The value of the slope mV pH appears on the display The probe symbol shows the evaluation of the current calibra tion 14 Press the RUN ENTER key The value of the asymm...

Page 32: ...5 Switch to the measuring mode with M Lin AutoCal DIN AutoCalTEC Y A S 0 RCL Sal cm Time Day Month Sal Store AR 8 No Ident Tref20 Tref25 Year Baud cm C K TP M mbar 1 m mg l cm S TDS 6 1 S O U nLF Auto...

Page 33: ...function on off see page 36 Warning When connecting an earthed PC printer measurements cannot be per formed in earthed media as incorrect values would result The RS232 interface is not galvanically is...

Page 34: ...oceed as follows Switching on off salt content correction Proceed as follows to switch on the salt content correction 1 Perform the preparatory activities according to section 4 4 1 2 Immerse the D O...

Page 35: ...Immerse the D O probe in the test sample 3 Press the key repeatedly until the D O saturation in appears on the display cm M cm 8 LoBat Time Baud Day Month No Ident Year mbar 1 S RCL AR Store Auto Cal...

Page 36: ...ozen hold function 3 Start AutoRead with RUN ENTER AR flashes until a stable measured value is reached This mea sured value is transmitted to the interface 4 If necessary start the next AutoRead measu...

Page 37: ...ration procedure automatically activates the AutoRead func tion The AR display indicator flashes The calibration process is fin ished when AR stops flashing Displaying the calibra tion data You can vi...

Page 38: ...g the calibration Proceed as follows to calibrate the instrument Note The sponge in the air calibration vessel must be moist not wet Follow the instructions in the OxiCal SL operating manual CALIBRATI...

Page 39: ...of the relative slope appears on the display The probe symbol shows the probe evaluation see page 38 7 Switch to the measuring mode with M Auto ARng Sal mg l cm M cm 8 LoBat Time Baud Day Month No Ide...

Page 40: ...uivalent of the test sample range 0 0 70 0 and to switch on the salinity correction Entering the salinity Note How to switch on the salt content correction is described on page 34 1 Determine the sali...

Page 41: ...esignation Default setting pH ORP Int 3 7 days d 7 Dissolved oxy gen Int 4 14 days d 14 1 Switch off the measuring instrument 2 Press the M key and hold it down 3 Press the ON OFF key The display test...

Page 42: ...ge in two ways l Save manually l Switch on AutoStore Int 1 see page 44 4 6 1 Saving manually You can transmit a measured value to the data storage as follows 1 Press the STO key The current number loc...

Page 43: ...ges to the measuring mode No ARng O U TP C 7 1 m Sal mg l 8 LoBat Time Baud Day Month Year Sal mbar 1 S RCL AR Auto Cal F 1 cm K TDS mV pH S cm cm M Lin Tref25 Tref20 nLF AutoCal DIN AutoCalTEC 2 9 9...

Page 44: ...hold it down 2 Press the STO key Int 1 appears on the display 3 Set the required interval between the saving procedures with Selection 5 s 10 s 30 s 1 min 5 min 10 min 15 min 30 min 60 min 4 Confirm...

Page 45: ...inued By this however temporal gaps in the recording of the measured values will occur Switching off AutoStore Switch AutoStore off by l setting the save interval Int 1 to OFF or l switching the measu...

Page 46: ...data record is displayed for approx 2 s then the respective temperature appears Display further data of the data record ID number date time storage location Press RUN ENTER Toggle between two saved m...

Page 47: ...element ap pears on the display After approx 2 s the temperature of the displayed measured value appears 1 Press the RCL key repeatedly until Sto SEr appears on the display 2 Press the RUN ENTER key T...

Page 48: ...measured variables ap pears in the following sequence l pH Slope SLO and asymmetry ASY l Dissolved oxygen Relative slope SLO Information concerning the calibration procedure is output as well Store Au...

Page 49: ...e measuring mode Sal cm AutoCal DIN Time Day Month Sal Store AR 8 No Ident Tref20 Tref25 Year Baud cm C K TP M mbar 1 m mg l cm S TDS 6 Lin Cal 1 S O U nLF AutoCalTEC Auto LoBat ARng F Y 0 1 pH mV S A...

Page 50: ...Tref25 nLF K Sal AR TP C M m mg l cm S cm cm 1 F ARng Cal Lin Tref20 Sal TDS mbar O UpH mV pH AutoCal DIN AutoCalTEC Time Baud Day Month No Year R C A L S E RCL CALIBRATION PROTOCOL 02 03 01 14 19 De...

Page 51: ...he measuring instrument automati cally switches to the last active measuring mode Proceed as follows to clear all data records Note The calibration data remain stored and can be called up 1 Switch off...

Page 52: ...the chronolog ical interval between automatic data transmissions After the selected interval expires the current data record is transmitted to the interface Note The setting of the interval Int 2 is...

Page 53: ...o connect the interface to the instruments The data output automatically switches to the RS232 interface Warning The RS232 interface is not galvanically isolated When connecting an earthed PC printer...

Page 54: ...rom a PC This requires the KOM pilot communication kit It is available as an acces sory The instrument is then controlled via commands that simulate keystrokes and request the current display contents...

Page 55: ...sure display Current value in mbar no input possible Intervals Calibration Int 3 in days d pH 1 7 999 d Int 3 O2 1 14 999 d Int 4 Date time Any 1 Switch off the measuring instrument 2 Press the M key...

Page 56: ...lTEC Time Baud Day Month No Year p C A L i s d pH pH 8 Confirm with RUN ENTER pH Int 3 and the measured vari able pH appear on the display Baud 4 Day Month No Time 1 M m mg l cm S cm S mV pH t n Store...

Page 57: ...e month flashes on the display 15 Set the current month with 16 Confirm with RUN ENTER The year appears on the display 17 Set the current year with 18 Confirm with RUN ENTER The hours flash on the dis...

Page 58: ...the measuring parameters are re set Recalibrate after performing a reset Configuration parameters The following configuration parameters InI are reset to the delivery status Measuring mode pH Slope 5...

Page 59: ...asuring parameters 5 Using toggle between no and YES YES Resetting the O2 measuring parameters no Retaining settings 6 Confirm with RUN ENTER The measuring instrument switches to the configuration par...

Page 60: ...n parameters no Retaining settings 8 Confirm with RUN ENTER The measuring instrument automatically switches to the last active measuring mode O pH Tref25 Tref20 AutoCalTEC RCL LoBat Cal ARng AR Lin nL...

Page 61: ...rning Make sure that the poles of the batteries are the right way round The signs on the batteries must correspond to the signs in the bat tery compartment Only use leakproof alkaline manganese batter...

Page 62: ...ansport packing We recommend Keep the packing material The original packing pro tects the instrument against damage during transport Batteries This note refers to the battery regulation that applies i...

Page 63: ...e electrode Gel electrolyte dried out Replace electrode Cause Remedy Electrode Diaphragm contaminated Clean diaphragm Membrane contaminated Clean membrane Moisture in the plug Dry plug Electrolyte out...

Page 64: ...taminated Clean membrane Test sample pH value not stable Measure with air excluded if necessary Temperature not stable Adjust temperature if necessary Electrode test sample Conductivity too low Use su...

Page 65: ...uit between gold and lead electrode Clean probe and replace it if necessary Cause Remedy Invalid calibration D O probe Electrolyte solution depleted Regenerate probe Membrane contaminated Clean membra...

Page 66: ...s bump on the membrane with high velocity Avoid direct flow to the membrane The carbon dioxide pressure is too high 1 bar Measuring not possible Cause Remedy Batteries almost empty Exchange the batter...

Page 67: ...ges Precision of pH ORP 1 digit pH temperature input Length mm 172 Width mm 80 Height mm 37 Weight kg Approx 0 3 Type of protection IP 66 Protective class III Storage 25 C 65 C Operation 10 C 55 C Cli...

Page 68: ...00 1 Temperature resolution 0 1 5 0 105 0 0 1 Concentration 0 5 of the measured value at an ambient temperature of 5 C 30 C Saturation 0 5 of the measured value when measuring in the range of 10 K aro...

Page 69: ...wer supplies Max overvoltage connection category II Plug in power supply unit Euro US UK Australian plug FRIWO FW7555M 09 15 1432 Friwo Part No 1822089 Input 100 240 V 50 60 Hz 400 mA Output 9 V 1 5 A...

Page 70: ...for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercia...

Page 71: ...xplains the indicators and the abbreviations that appear on the display and in the manual Specialist terms The glossary briefly explains the meaning of the specialist terms How ever terms that should...

Page 72: ...ny ConCal Conventional single point or two point calibration for pH measurements Ct Display indicator during calibration for pH mea surements Indicates the selection of the buffer data records for WTW...

Page 73: ...pH Oxi 340i Lists 73 TP Temperature measurement active Temperature Probe UASY Asymmetry...

Page 74: ...t ed at the same time see adjusting D O partial pressure Pressure caused by the oxygen in a gas mixture or liquid D O saturation Short name for the relative D O saturation Note The D O saturation valu...

Page 75: ...is a measure of the acidic or basic effect of an aqueous solu tion It corresponds to the negative decadic logarithm of the molal hy drogen ions activity divided by the unit of the molality The practi...

Page 76: ...value is known by definition It is used to calibrate a measuring system Temperature coefficient Value of the slope of a linear temperature function Temperature function Name of a mathematical function...

Page 77: ...ion 52 save 44 K Keys 8 M Measuring mode when switching on 15 Measuring the D O concen tration 34 Measuring the D O satura tion 35 O Operating 10 Operating safety 12 ORP electrode 20 ORP voltage 20 P...

Page 78: ...Index pH Oxi 340i 78...

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