wtw inoLab Cond 720 Operating Manual Download Page 29 | Manualshive

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wtw inoLab Cond 720 Operating Manual Download Page 29

Operation

29

Selecting the non-

linear temperature

compensation

To select the non-linear temperature compensation proceed
as follows:

1 Press the

c

key repeatedly until LF tc appears on

the display.

2 Press the

g

key.

3 Press the

c

key repeatedly until nLF appears on

the display.

4 To return to the measuring mode: press the

m

key.

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Summary of Contents for inoLab Cond 720

Page 1: ...inoLab Cond Level 1 ba12226e03 10 2002 ba12226e 1 Operating Manual Laboratory conductivity meter...

Page 2: ...urchase The instrument warranty extends to manufacturing faults that are determined within the period of warranty The warranty excludes components that are replaced during maintenance such as batterie...

Page 3: ...fic resistance 19 4 2 2 Salinity 20 4 2 3 TDS total dissolved solids 21 4 3 Determining setting up the cell constant C 22 4 3 1 Determining the cell constant calibrating 22 4 3 2 Setting the cell cons...

Page 4: ...List of contents 4...

Page 5: ...ng comfort reliability and measuring safety for all appli cations The proven procedures to determine or set up the cell con stant support your work with the conductivity meter Note The measuring instr...

Page 6: ...rument ON OFF 2 Select measuring mode 3 Set up or determine cell constant select temperature compensation 4 Activate deactivate AutoRead function 5 Confirm inputs start AutoRead 6 Increase values scro...

Page 7: ...ive voltages or currents SELV and circuit with current limiter Almost all commercial measuring cells especially WTW measuring cells meet these requirements Connectors 1 Conductivity measuring cell 2 P...

Page 8: ...Overview 8...

Page 9: ...or use in the lab oratory Thus we assume that as a result of their professional train ing and experience the operators will know the necessary safety precautions to take when handling chemicals Symbol...

Page 10: ...in a safe and secure technical condition Function and opera tional safety The smooth functioning and operational safety of the instru ment can only be guaranteed if the generally applicable safety mea...

Page 11: ...ngthy period of time l the instrument is visibly damaged l the instrument no longer operates as described in this manual If you are in doubt contact the supplier of the instrument Obligations of the o...

Page 12: ...Safety 12...

Page 13: ...can however also be supplied by the plug in power supply which is available as an accessory Warning The line voltage on site must lie within the input voltage range of the original plug in power supp...

Page 14: ...Commissioning 14 Scope of delivery l Laboratory measuring instrument inoLab Cond Level 1 l Operating manual and short manual l 4 x type AA Mignon 1 5 V batteries...

Page 15: ...ing feature is not active if the instrument is supplied by the plug in power supply 1 Place the instrument on a flat surface and protect it against intense light and heat 2 Connect the conductivity me...

Page 16: ...lected cell con stant ist displayed e g 0 475 cm 1 3 To return to the measuring mode press the m key when the correct cell constant ist displayed 4 If a different cell constant is to be set proceed ac...

Page 17: ...emperature probe used As a result you can connect electrodes with the NTC30 or Pt1000 The temperature measurement is absolutely essential for a reproducible conductivity measurement If the measure men...

Page 18: ...ceptance of the current value can be terminated at any time by pressing g 1 Call up the required measuring mode by pressing m 2 Activate the AutoRead function by pressing a The current measured value...

Page 19: ...r mea surements of the specific resistance Conductivity Specific resistance 1 Perform the preparatory activities according to sec tion 4 2 2 Immerse the conductivity measuring cell into the test sampl...

Page 20: ...g to sec tion 4 2 2 Immerse the conductivity measuring cell into the test sample 3 Press the m key repeatedly until Sal appears in the status line The salinity value of the sample appears on the dis p...

Page 21: ...uring cell into the test sample 3 When measuring with an integrated temperature probe continue with step 4 When measuring without temperature probe Determine the temperature of the test sample using a...

Page 22: ...the cell constant of the conductivity mea suring cell in the range 0 450 0 500 cm 1 or 0 800 1 200 cm 1 by calibrating in the control standard or set it up manu ally in the range 0 250 2 500 cm 1 Add...

Page 23: ...4 Immerse the measuring cell into the 0 01 mol l KCL control standard 5 Press the g key If no temperature probe is connected enter the current temperature of the solution using u d and confirm with g...

Page 24: ...the range 0 450 0 500 cm 1 or 0 800 1 200 cm 1 Calibration evaluation After calibrating the instrument automatically evaluates the current condition of the calibration The evaluation appears on the di...

Page 25: ...asuring cell You can set the the cell constant manually as follows Setting the fixed cell constant 0 010 cm 1 1 Press the c key repeatedly until CELL appears on the display 2 Press the g key 3 Press t...

Page 26: ...ars on the display 2 Press the g key 3 Press the c key repeatedly until a cell constant in the range 0 090 0 110 cm 1 appears 4 Set the cell constant to be used with ud e g 0 105 cm 1 5 To return to t...

Page 27: ...rs on the display 2 Press the g key 3 Press the c repeatedly until until a cell constant in the range 0 250 2 500 cm 1 appears 4 Set the cell constant to be used with ud e g 0 614 cm 1 5 To return to...

Page 28: ...mpensation Lin with a coeffi cient that can be set in the range 0 001 3 000 K l no temperature compensation Note ips Select the following temperature compensations to work with the test samples given...

Page 29: ...To select the non linear temperature compensation proceed as follows 1 Press the c key repeatedly until LF tc appears on the display 2 Press the g key 3 Press the c key repeatedly until nLF appears on...

Page 30: ...ed as follows 1 Press the c key repeatedly until LF tc appears on the display 2 Press the g key 3 Press the c key repeatedly until the adjustable lin ear temperature coefficient appears on the display...

Page 31: ...compensation proceed as fol lows 1 Press the c key repeatedly until LF tc appears on the display 2 Press the g key 3 Press the c key repeatedly until the following dis play appears 4 The temperature...

Page 32: ...vity measurement or resistance measurement l C or F Note You can leave the configuration menu at any time Parame ters that have already been changed are stored To do this press the m key 1 Switch off...

Page 33: ...trument is set to 25 C Conductivity and resistance measurement On delivery the measuring instrument is set to conductivity measurement 1 With u d toggle between t25 and t20 2 Confirm with g The instru...

Page 34: ...Operation 34 Setting C or F On delivery the measuring instrument is set to C 5 With u d toggle between C and F 6 Confirm with g The instrument changes to the measuring mode...

Page 35: ...calibrated 0 475 cm 1 set up Temperature compensation nLF Reference temperature Temperature coefficient of the lin ear temperature compensation 2 000 K TDS factor 1 00 1 Press and hold down the g key...

Page 36: ...Operation 36...

Page 37: ...The signs in the battery compartment must correspond to the signs on the batteries Only use leakproof alkaline manganese batteries Note See the relevant operating manual of the measuring cell for ins...

Page 38: ...he instrument against damage during transport Batteries This note refers to the battery regulation that applies in the Federal Republic of Germany We would ask end consum ers in other countries to fol...

Page 39: ...replace it Unsuitable calibration solution Check calibration solutions Cause Remedy Batteries almost depleted Replace batteries see section 5 1 MAINTENANCE Cause Remedy Operating state undefined or E...

Page 40: ...What to do if 40...

Page 41: ...only with 0 010 cm 1 cell constant 0 00 19 99 only with 0 010 cm 1 constant and cell constant 0 090 0 110 cm 1 0 0 199 9 0 1999 0 00 19 99 0 0 199 9 0 500 Spec resistance M cm 0 000 1 999 0 00 19 99 0...

Page 42: ...acy Test sample temperature 0 5 10 C 75 C the accuracy percentage always refers to the measured value SAL Range 0 0 42 0 Accuracy Test sample temperature 0 1 at 5 C 25 C 0 2 at 25 C 30 C TDS mg l 1 T...

Page 43: ...500 C cm 1 0 450 0 500 0 800 1 200 TREF C 20 25 Manual C 5 100 Length mm 230 Width mm 210 Height mm 70 Weight kg Approx 0 850 Cell constant to be set Cell constant calibrated Reference tempera ture s...

Page 44: ...30 mA 1 56 VA Plug in power supply with US plug FRIWO FW1199 11 7880 Friwo Part No 1794043 Input 120 V 60 Hz 6 VA Output 12 V 150 mA Plug in power supply UK plug FRIWO FW1199 11 7872 Friwo Part No 181...

Page 45: ...xplains abbreviations that appear on the display or when dealing with the instrument Specialist terms The glossary briefly explains the meaning of the specialist terms However terms that should alread...

Page 46: ...basic functions to the status they had on delivery Lin Linear temperature compensation LoBat Low Battery Batteries are almost empty nLF Non linear temperature compensation OFL Overflow Display range e...

Page 47: ...nstant Linear factor describing the geometrical dimensions of a measuring cell and its electrodes l With the value of the cell constant you can roughly de scribe the application range of a conductivit...

Page 48: ...temperature has a very strong impact on the electrical conductivity To be able to compare measured values it is necessary to temper or convert the test sample to a refer ence temperature Test sample T...

Page 49: ...sages 39 I initialize 35 K keys 6 L LoBat 39 M maintenance 37 measuring 17 O operation 15 operational safety 10 P parameters reset 35 place of the instrument 15 plug in power supply 13 R reference tem...

Page 50: ...Lists 50...

Page 51: ...Appendix 51 9 Appendix...

Page 52: ...her informationen or application notes you can ask for l Application reports l Primers l Safety data sheets You can find information on available literature in the WTW catalog LABORATORY AND FIELD INS...

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