conductivity - catalogus.de filegeneral features sample preparation laboratory & field...
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Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
ConductivityMetersConductivity
MetersHandheld conductivity meters
Portable conductivity meters
Laboratory conductivity meters
Conductivity cells
Accessories
The conductivity is a cumulative para-meter for the ionic concentration of asolution. The more salt, acid or alkali ina solution, the greater its conductivity.The unit of conductivity is S/cm. Thescale for aqueous solutions begins withpure water at a conductivity of0.05 µS/cm (25°C). Naturally occurringwaters such as drinking water or surfacewater have a conductivity in the range100 - 1000 µS/cm. The upper end of thescale is reached by some bases such aspotassium hydroxide solutions with aconductivity of just over 1000 mS/cm.
In practice conductivity measurementsare used for applications such as moni-toring plants in which ultrapure water isproduced and determining the salinity ofsea water.
Conductivity is measured by making ameasurement of the electrical resistance. The simplest kind of measuring cell usedconsists of two similar electrodes. An alternating voltage applied to one of theelectrodes causes the ions in the solution to migrate towards the electrodes. Themore ions in the solution, the greater the current which flows between theelectrodes. The instrument measures the current and uses Ohm's law to calculatefirst the conductance of the solution and then - by taken the cell data into account- the conductivity.
Electrical Conductivity
Further information on this subject canbe requested from WTW:
Application reportsOffprints
Literature
Feedwater for high-pressure boilers
Fully deionized water (ion exchanger)
Deionized water
Drinking water
Brackish water, sea water
Industrial process water
Concentrated acids and bases
Wastewater
Surface water
µS/cm mS/cm0,1 1 10 100 1 10 100 1000
Conductivity of aqueous solutions
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Conductivity Meters
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Handheld conductivity meters
Portable conductivity meters
Laboratory conductivity meters
Model from page
Handheld Quality in a set of three 78conductivity meters - Simple to use
- Proven with memory function- All-rounder with interface
Portable Classic 82conductivity meters robust, shockproof, waterproof, portable,
conductivity measurement at depths down to 100 m
Laboratory inoLab® – top quality in 3 stages 84conductivity meters - Simple and reliable
- Compact and communicative- Flexible and powerful
Conductivity cells 88 Standard cells 89 Special cells 89
Conductivity meter accessories Flow-thru cells 94 Stands and cell holders 94 Calibration and testing agents 95
For documentation Software, printer and accessories 180
Further instruments for conductivity measurement from page
Multi-parameter instruments 96
Conductivity meters for every application
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Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
ConductivityMetersHandheld
Conductivity MetersCond 315i, Cond 330i and Cond 340i
NEW
Handy
Dust- and waterproof
Easy to use
GLP-conform
Low-power systemallows continuousoperation for up to 2500 h
Long usability
Complete in SET
Features
General Information
about handheld conductivity meterscan be found on pages 14 - 17.
Pocket-size precision
Universal conductivity meters with large multifunction displayfor measurement of conductivity, temperature, salinity and totaldissolved solids. With the proven dirt-insensitive Tetracon®
4-electrode system they offer the highest degree of precisionand operating comfort.
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IP 66IP 67
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Handheld Conductivity Meters
Cond 315i, Cond 330i, Cond 340ihandy · waterproof · GLP-conform
Cond 315i:
The simple conductivity meter for meeting higherdemands. With only 5 keys for error-free measurementwith parallel temperature measurement, automatictemperature compensation, 4-electrode measuringtechnology
Cond 330i:
Robust and waterproof handheld conductivity meterfor battery operation; with parallel temperaturedisplay, integrated datalogger, GLP supportingfunctions, automatic and manual temperaturecompensation with linear temperature function andnon-linear function for ultrapure water and naturalwaters according to DIN 38 404 and EN 27 888. The temperature compensation can be switched off;either 20 °C or 25 °C can be selected as the referencetemperature
Cond 340i:
As Cond 330i, but with additional analog and digitalRS 232 output and optional mains power supply
YearWarranty3
Cond 315i
80
Model Cond 315i Cond 330i Cond 340iMeasuring range/ Conductivity 0.0 µS/cm … 500 mS/cm 0.0 µS/cm … 500 mS/cmresolution with 5 ranges in 5 ranges or AutoRange
in AutoRange 0.00 µS/cm ... 19.99 µS/cm (for K=0.1 cm-1)0.00 µS/cm ... 19.99 µS/cm 0.000 µS/cm ... 1.999 µS/cm (for K=0.01 cm-1) (for K=0.1 cm-1)
Temperature -5.0 °C ... +105.0 °C -5.0 °C … +105.0 °CSalinity 0.0 … 70.0 0.0 … 70.0 TDS – 0 … 1999 mg/l Resistivity 0.00 ... 1999 MΩcm 0.000 ... 1999 MΩcm
Accuracy Conductivity ±0,5 % of value ±0.5 % of value (±1 digit) Temperature ±0.1 K ±0.1 K
Ref. temperature Tref 25 °C 20 or 25 °C, selectable
Cell constant Fixed 0.475 cm-1, 0.1 cm-1 0.475 cm-1 0.1 cm-1 and 0.01 cm-1 fixed and0.25 ... 2.5 cm-1 and 0.09 ... 0.11 cm-1 adjustable
Temperature Automatic, can be switched off Automatic, can be switched offcompensation
Temperature- • Non-linear function for natural waters (nLF) • Non-linear function for natural waters (nLF) coefficient to EN 27 888 (DIN 38 404) and to EN 27 888 (DIN 38 404) and ultrapure water function
ultrapure water function • Linear compensation from 0.01 ... 2.99%/K• No compensation • No compensation
Display LCD display 60 x 45 mm visible area, simultaneous display of measurement, temperature and special characters
Data storage – 500 data sets (measurement, temperature, date/time, identity no.); time-controlled storage at 7 intervals 5 s ... 60 min, non-volatile data storage
Data output Via display Via display or interface
Interface – Self-configuring analog output 0 ... 2 V corresponding to display, or RS 232 bi-directional interface
Operating timeMains operation – Continuous operation from mains supply
Battery operation = 500 ... 2500 h* with 4 x 1.5 V batteries with AutoSwitchOff after 1 h (except logger operation)*depending on conductivity
Protection type IP 66 and IP 67 to IEC 529
Dimensions 172 x 80 x 37 mm (H x B x D)
Weight Approx. 300 g
Certified to CE, TÜV/GS, UL and/or cETLus, CUL
Warranty 3 years for the instrument
Technical Data
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
SET Equipment
Each handheld conductivity meter is available in a completeequipment set
SET equipmentfor Cond 315i, Cond 330i and Cond 340i
• Professional case with built-in measuring set-upand separate compartment for measuring cell and accessories
• Conductivity meter with batteries • Measuring cell as chosen• KCl solution 0.01 mol/l for system checks• Stand and measuring beaker• Plug-in power supply (only Cond 340i)• Operating instructions
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Handheld Conductivity Meters
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Please refer to page 88 for conductivity cells and page 94 ff. for other accessories
Handheld Conductivity Meters Order No.
Cond 315i Robust and waterproof battery-operated handheld conductivity meter 2C10-000
Cond 330i Robust and waterproof battery-operated handheld conductivity meter with datalogger 2C20-000
Cond 340i Robust and waterproof battery-operated handheld conductivity meter with datalogger 2C30-000and serial interface
Cond 340i Robust and waterproof handheld conductivity meter with datalogger and serial interface, 2C30-010for mains operation
Ordering Information
Handheld Conductivity Meters SETs Order No.
Cond 315i Handheld conductivity meter, including conductivity cell, professional case and accessories 2C10-001
Cond 330i Handheld conductivity meter, including conductivity cell, professional case and accessories 2C20-001
Cond 340i Handheld conductivity meter, including conductivity cell, professional case and accessories 2C30-001
Cond 340i Handheld conductivity meter with mains power supply, including conductivity cell, professional case and accessories2C30-011
Conductivity cells – please select oneTetraCon® 325 4-electrode conductivity measuring cellTetraCon® 325-3 4-electrode conductivity measuring cell with 3 m cableLR 325/01 Ultrapure water conductivity cell
SET ordering example Cond 330i + TetraCon® 325-3 conductivity cell 2C20-001
Note: Other conductivity cells in SET and instrument versions for 120 VAC/60 Hz are available on request
Ordering Information SETs
1
2
4
2
Conductivity measuring kit according to USP 24, with stainlesssteel flow-thru vessel for pharmaceuticalwater (see page 95).
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Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Robust
Shockproof
Waterproof
Portable
Reliable
Standard conductivitymeasurement and con-ductivity measurementat depths down to 100 m
Features
WTW portable conductivity meters
The WTW conductivity meters of the ProfiLine LF 197 series are both hose-proof (IP 66) and submersible (IP 67).
They convince because of their high degree of operator comfort and foolproofoperator guidance via the large multifunctional display. They are equipped with acarrying/support handle and carrying strap as standard.
The portable conductivity meters are available in 2 versions:
ConductivityMeters
Portable Conductivity Meters
ProfiLine LF 197 and ProfiLine LF 197-S
IP 66IP 67
YearWarranty3
ProfiLine LF 197:
ProfiLine conductivity meter, extremelyrobust, hose-proof (IP 66) and submersi-ble (IP 67), for connection of TetraCon®
325 4-electrode measuring cells anddepth armature TA 197 LF with up to100 m cable, with large multifunctionaldisplay for temperature and measure-ment, automatic temperature compen-sation, selectable reference temperatureof 20 °C or 25 °C, built-in memory, TDSand salinity measurements, RS 232 digital
output, integrated carrying and supporthandle, built-in electrode storage sleeve,for rechargeable battery and mainsoperation, and including plug-in powersupply and carrying strap
ProfiLine LF 197-S:
As ProfiLine LF 197 but with 2 analogoutputs corresponding to display forconductivity and temperature values
General Information
about portable conductivity meterscan be found on pages 18- 19.
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83Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Portable Conductivity Meters
Conductivity depth armature TA 197 LF with built-in temperature sensor, up to100 m cable with waterproof plug (IP 67), pressure-resistant steel armoring(material VA 1.4571) with screw-off protective hood, pressure-resistant to max.10 bar, fits into 2" boreholes
Accessories for conductivity measurement at depths down to 100 m
Model ProfiLine LF 197 ProfiLine LF 197-SMeasuring range/ Conductivity 0.0 µS/cm ... 500 mS/cm in 5 ranges, additional 0.00 .. 19.99 µS/cm (at K=0.1 cm-1)resolution Temperature -5.0 ... 99.9 °C/ ±0.1 K
Salinity 0.0 ... 70.00TDS 0 ... 1999 mg/l
Accuracy Conductivity ±0.5% of value(± 1 digit) Temperature ±0.1 K
Ref. temperature 20 °C or 25 °C, selectable
Cell constant 0.1 cm-1 fixed and 0.45 ... 1.30 cm-1, adjustable
Temperature Automatic or manualcompensation
Temperature • Non-linear function for natural waters to EN 27 888 (DIN 38 404)coefficient • Linear compensation from 0.50 ... 3.00 %/K
• No compensation
Display LCD display 60 x 35 mm visible area, simultaneous display of measurement, temperature, special characters
Data storage Ring memory for 50 pairs of measurements (measurement, temperature) with data protection
Data output Via display or interface
Interface Unidirectional RS 232 interface Unidirectional RS 232 interface2 analog recorder outputs for measurement and temperature output corresponding to display
Operating time Continuous operation from plug-in mains supply; or 150 ... 800 hours with rechargeable batteries (depends on conductivity) with AutoSwitchOff after 1 h
Protection type IP 66 and IP 67 to IEC 529
Dimensions 230 x 185 x 90 mm (B x D x H)
Weight Approx. 1.5 kg
Certified to CE, TÜV/GS, UL, CUL
Warranty 3 years for the instrument
Technical Data
Ordering InformationPortable conductivity meters Order No.
ProfiLine LF 197 Robust, waterproof, submersible conductivity meter 300 350
ProfiLine LF 197-S As ProfiLine LF 197, but additionally with 2 analog recorder outputs 300 351
Note: 120 VAC / 60 Hz versions on request
Depth armatures for conductivity measurements with ProfiLine LF 197 and ProfiLine LF 197-S4-electrode conductivity depth armatures with built-in temperature sensors, cable (length optional) with waterproof plug (IP 67), VA 1.4571 steel armoring and screw-off protective hood, pressure resistant to max. 10 bar, fits into 2” boreholes
Cable length Order No. Cable length Order No.
TA 197 LF-25 25 m 301 980 TA 197 LF-60 60 m 301 982
TA 197 LF-40 40 m 301 981 TA 197 LF-100 100 m 301 983
Please refer to page 88 for conductivity cells and page 94 ff. for other accessories
inoLab® Cond Level 2:compact and communicative
Standard laboratory conductivity meterwith large multifunctional display, paralleltemperature display and automatic tem-perature compensation. An integral mea-surement store with logger function anda real-time clock allow QA-conform dataacquisition. The optional built-in printerallows data printout on thermal paperaccepted for use in official documents.20 °C or 25 °C can be set as referencetemperature. Both TDS and salinity mea-surements are possible as well as conduc-tivity and temperature. The ability to setdifferent cell constants means that otherspecial conductivity cells can be con-nected as well as the TetraCon® 325 4-electrode conductivity cell and LR 325/01ultrapure water conductivity cell (see page 93).84
Thinkinnovative
Seeinnovative
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
ConductivityMeters
Performance-orientedinstrument range
Simplified operatorconvenience
Mains-independent
Suitable as bench andwall-mounted models
Country-specific units
ISO-conform documentation
Application-orienteddisplays
Features
LaboratoryConductivity Meters
inoLab® Cond Level 1, inoLab® Cond Level 2, inoLab® Cond Level 3
inoLab® Cond Level 1: simple and reliable
Routine laboratory conductivity meterwith large multifunctional display, paralleltemperature display and automatic tem-perature compensation. 20 °C or 25 °C can be set as referencetemperature. Both TDS and salinity mea-surements are possible as well as conduc-tivity and temperature. The ability toset different cell constants means thatother special conductivity cells can beconnected as well as the TetraCon® 325 4-electrode conductivity cell and LR325/01 ultrapure water conductivity cell(see page 93).
inoLab® Level 2
inoLab® Level 1
MultiCal®
automatic calibration
AutoReadautomatic driftcontrol for stableand reproduciblemeasurements
Feed and on/off keyskeys for control-ling the built-inprinter
General Information
about inoLab® laboratory instruments can be found on pages 20 - 25.
YearWarrantyIP 43 3
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Touchinnovative
Terminal Level 3
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Laboratory Conductivity Meters
inoLab® Cond Level 3 with Teminal Level 3 or PC software: flexible and powerful
High-performance laboratory conductivity meter with graphics display and digitalrecorder function, parallel display of temperature and automatic temperature com-pensation. An integral measurement store with logger function and a real-timeclock allow QA-conform data acquisition. The optional built-in printer allows dataprintout on thermal paper accepted for use in official documents.
20 °C or 25 °C can be set as reference temperature. Both TDS and salinity measure-ments are possible as well as conductivity and temperature. The ability to set differentcell constants means that other special conductivity cells can be connected as wellas the TetraCon® 325 4-electrode conductivity cell and LR 325/01 ultrapure waterconductivity cell (see page 93).
An PC keyboard interface allows an external keyboard or a barcode reader to beconnected.
Features
Built-in digital plotter
Graphic evaluation possible
Connection of bar-codereader or PC keyboard
Automatic memory fun-ction if bar-code readeris used
Selectable instrumentlanguage
Extended GLP functions
Limit input with acoustic alarm
Meets all the require-ments of USP 24
Free-of-charge softwaredownloads for inoLab®
pilot or terminal
inoLab® Level 3
AutoReadautomatic drift control forstable and reproduciblemeasurements
RUN/ENTERtriggers the measuring process
YearWarrantyIP 43 3
86
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Modelle Cond Level 1 Cond Level 2 Cond Level 3Range/ Conductivity 0.0 µS/cm ... 500 mS/cmResolution in 5 measuring ranges or AutoRange
additionally for K = 0.1 cm-1: 0.00 µS/cm ... 19.99 µS/cmK = 0.01 cm-1: 0.000 µS/cm ... 1.999 µS/cm
Temperature -5.0 ... +99.9 °CSalinity 0.0 ... 70.0TDS: 0 ... 1999 mg/lResistivity: 0.000 ... 1999 MΩcm
Accuracy Conductivity ±0.5% of value(±1 digit) Temperature ±0.1 K
Reference 20 °C or 25 °C, selectabletemperature
Cell constants 0.475 cm-1, 0.1 cm-1 and 0.01 cm-1 fixed, freely selectable 0.25 ... 2.5 cm-1 and 0.09 ... 0.11 cm-1
Temperature Automatic, manual or switched offcompensation
Temperature • Non-linear function for natural water to EN 27 888 (DIN 38 404)coefficient • Linear compensation from 0.001 ... 2.999%/K
• No compensation
Calibration With 0.01 mol KCl
Real-time clock – Non-volatile
Data memory – 200 records 2000 records(measurement, temperature) (measurement, temperature)date/time, ident. no., time-controlled date/time, ident. no., time-controlledstorage interval 5 s ... 60 min storage interval 1 s ... 60 days
Data output Display Display or interface Display, PC or interface
Analog interface – Self-configuring as analog output corresponding to display or asRS 232 bidirectional interface
Digital interface – RS 232 bidirectional interface
Operating time/ 2500 h with 4 x 1.5 V standard batteries With terminal: universal plug-in power Energy supply or mains supply supply 230 VAC or 120 VAC
Without terminal: via PC interface
Protection type IEC 529 / IP 43 without built-in printer
Dimensions 230 x 210 x 70 300 x 250 x 70 300 x 250 x 70(B x D x H in mm)
Weight Approx. 1.3 kg Approx. 1.6 kg Approx. 1.6 kg
Certified to CE, TÜV/GS, UL, CUL
Warranty 3 years for the instrument
Technical Data for laboratory conductivity meters
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87Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
inoLab® laboratory conductometers Order No.
inoLab® Cond Level 1 Simple and reliable conductometer for routine work 1C10-010
inoLab® Cond Level 2 Compact precision conductometer with serial interface 1C20-010
inoLab® Cond Level 2 Compact precision conductometer with additional 1C21-010built-in printer for GLP-conform documentation
inoLab® Cond Level 3 Flexible and powerful precision – the intelligent conductivity measuring place 1C30-010consisting of multifunction box and universal terminal, with PC software/connection cable
inoLab® Cond Level 3 The intelligent conductivity measuring place with additional built-in printer 1C31-010
inoLab® Cond Level 3 The integrated conductivity measuring place with PC software/connection cable; without printer/terminal 1C32-000
Ordering Information for inoLab® conductivity meters
inoLab® Cond SETs Order No.
inoLab® Cond Level 1 Including cell, passive multifunction box and accessories 1C10-011
inoLab® Cond Level 2 Including cell, passive multifunction box and accessories 1C20-011
inoLab® Cond Level 2 Including built-in printer, cell, passive multifunction box and accessories 1C21-011
inoLab® Cond Level 3 Including terminal, cell and accessories 1C30-011
inoLab® Cond Level 3 With built-in printer, including terminal, cell and accessories 1C31-011
inoLab® Cond Level 3 Without printer/terminal, with PC software/connection cable, cell and accessories 1C32-001
Conductivity cells – please select oneTetraCon® 325 4-electrode conductivity measuring cellTetraCon® 325-3 4-electrode conductivity measuring cell with 3 m cableLR 325/01 Ultrapure water conductivity cell
SET ordering example inoLab® Cond Level 1 + conductivity measuring cell LR 325/01 1C10-011
Note: Other measuring cells in SET and instrument versions for 120 VAC/60 Hz are available on request
Ordering Information for inoLab® conductivity meters SETs – “ready to go”
124
4
Please refer to page 88 for conductivity cells and page 94 ff. for other accessories
Laboratory Conductivity Meters
88
TetraCon®
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
ConductivityMetersConductivity cells
TetraCon® conductivity cells
For more than 50 years WTW has been one of the leading manufacturers worldwideof precision conductivity meters and cells.
The TetraCon® 4-electrode system is the perfect result of a logical, practice-orientedfurther development and sets a new standard for professional conductivitymeasurements.
In comparison with conventional measuring cells with 2 electrodes, the TetraCon®
conductivity cell offers numerous technical advantages:
• Highest degree of precision and linearity by optimized cell geometry
• Extremely large measuring range with just one cell
• Long-term cell constant stability with high-quality abrasion-resistant graphiteelectrodes
• With built-in temperature sensor as standard
• Smallest immersion depth possible
• Ideal sample exchange – no dead volume
• No measuring errors even with very dirty electrode – contact resistance on theelectrode surface is automatically compensated
• No measuring errors from cable influences
• No measuring errors from primary or secondary polarization effects
• No measuring errors from alteration to the electrical marginal field during contactwith base or side walls
• No danger of breakage owing to robust epoxy casting technique
Special conductivity depth armatures forProfiLine LF 197 and ProfiLine LF 197-Scan be found on page 83
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Conductivity Cells
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Special conductivity cellTetraCon® 325/Pt
4-electrode cell made of glass
with built-in temperature
sensor. For universal use, even
in partially aqueous or highly
aggressive media.
Electrode material platinum
Shaft length 120 mm
Cell constant K approx. 1 cm-1
Diameter 20 mm
Cable length 1.5 m
Measuring range
1 µS/cm ... 1 S/cm*
Special conductivity cellTetraCon® 325/S
4-electrode cell with built-in
temperature sensor for measure-
ments in pastes, creams and
emulsions
Electrode material graphite
Shaft material epoxy
Shaft length 120 mm
Cell constant K = 0.491 cm-1
Diameter 15.3 mm
Cable length 1.5 m
Measuring range
1 µS/cm ... 2 S/cm*
Ultrapure water con-ductivity cell LR 325/01
With built-in temperature sensor
and flow-thru vessel D 01/T for
the measurement of small
conductivities (<1 µS/cm), e.g.
boiler feed water or deionized
water.
Electrode material V4A steel
Shaft material V4A steel
Shaft length 120 mm
Cell constant K = 0.1 cm-1
Diameter 12 mm
Cable length 1.5 m
Min./max. immersion depth
35/110 mm
and flow-thru measurements
Measuring range
0.001 µS/cm ... 300 µS/cm
Standard conductivity cellTetraCon® 325
4-electrode cell with built-in
temperature sensor
Electrode material graphite
Shaft material epoxy
Shaft length 120 mm
Cell constant K = 0.475 cm-1
Diameter 15.3 mm
Cable length 1.5 m
Measuring range
1 µS/cm ... 2 S/cm*
Temperature range 0 ... 90 °C
* Measuring range depends on particular instrument
90
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Dialysis conductivity cellTetraCon® DU/TH
As TetraCon‚ DU/T, but for
dialyzers with connectors
to DIN 58 352 (Hansen
connectors).
Adapter cable KKDU 325, length
1 m, is necessary for the
connection.
Conductivity measuringcell LDM
For small sample volumes with
injection syringe for sampling
Cell constant
K approx. 150 cm-1
Conductivity flow-thru cellLDM/S
For column chromatography or
minute sample volumes.
Cell constant K approx. 15 cm-1
Adapter cable K-LDM with
built-in 30 kΩ fixed resistor is
necessary for the connection.
Volume approx. 4 ml
Temperature 0 ... 90 °C
Conductivity flow-thru cellTetraCon® DU/T
4-electrode cell with built-in
temperature sensor for standard
applications in laboratories and
production. Connection via
10 mm dia. hose nozzles.
Electrode material graphite
Shaft material epoxy
Length 155 mm
Filling volume 7 ml
Cell constant K = 0.778 cm-1
Measuring range
1 µS/cm ... 2 S/cm*
Adapter cable KKDU 325, length
1 m, is necessary for the
connection.
Trace conductivity cell LR 325/001
With built-in temperature sensor
and flow-thru vessel for the
measurement of conductivity
and resistance in boiler feed
water or deionized water as well
as in partially aqueous and non-
aqueous media.
Flow-thru vessel V4A steel
Electrode material V4A steel
Shaft material V4A steel
Shaft length 120 mm
Cell constant K = 0.01 cm-1
Diameter 20 mm
Cable length 1.5 m
Min./max. immersion depth
35/110 mm
and flow-thru measurements
Measuring range
0.0001 µS/cm ... 30 µS/cm
* Measuring range depends on particular instrument
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LTA 1 2 2 2 2 2 2 1 2 2
LTA 1 1 2 2 2 2 2 2 1 2 2
LTA 01 1 2 2 2 2 2 2 1 2 2
LTA 10 1 2 1
LTA 100 1 2 2 2 2 2 1 2 2
LTA/S 1 2 2 2 2 2 2 1 2 2
LTA/KS 1 2 2 2 2 2 2 1 2 2
LR 01/T
LR 001/T
LDM 3
LDM/S 3
KLE 1
KLE 1/T
KLE 315
TetraCon® 96
TetraCon® 96-1,5
TetraCon® 96-A-
TetraCon® 96 A-4
TetraCon® 96-T-100 m
TetraCon® 325
TA 197 LF
TetraCon® L
TetraCon® 325/Pt
TetraCon® DU/T 4 5 5 5 5 4 5 4 4 5 4 4 5 5
TetraCon® DU/TH 4 5 5 5 5 4 5 4 4 5 4 4 5 5
KDU 1/T 5 5 5 5 4 5 4 4 5 4 4 5 5
KDU 1/TH 5 5 5 5 4 5 4 4 5 4 4 5 5
LR 325/01
LR 325/001 *
TetraCon® 325/S
1
2
3
4
5
*
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Selection Guide
Adapter (possible conversion with cell constants) is required:Adapter cable KLF 10Adapter cable K/LTA together with temperature sensor TFK 325 or TFK 150Adapter cable K/LDMConnection cable KKDUConnection cable KKDU 325not for Cond 315i
Selection Guide
LF 9
0
LF 9
5
LF 9
6
LF 3
15
LF 3
18
LF 3
20/3
23/3
25
LF 3
30/3
40A
Co
nd
315
i/33
0i/3
40i
LF 5
37
LF 5
38
LF 5
39
LF 3
000
Mul
tiLa
b®
540
Mul
tiLa
b®
P4/P
5
LF 1
96
LF 1
97
LF 5
97
Measuring cell ino
Lab
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d,
pH
/Co
nd
, M
ulti
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P4,
Mul
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40i
Mul
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P3 p
H/L
F,
pH
/Co
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340
i
92
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Standard conductivity cells Order No.
KLE 315 2-electrode conductivity cell with 1.5 m cable and waterproof plug 301 965
TetraCon® 325 4-electrode conductivity cell with built-in temperature sensor, K = 0.475 cm-1 301 960with waterproof plug (IP 68) and 1.5 m cable
TetraCon® 325-3 As TetraCon®‚ 325, but cable length 3 m 301 970
LTA 1 Glass/platinum 2-electrode conductivity cell, K approx. 1 cm-1 301 310(adapter cable K/LTA required)
LTA 100 Glass/platinum 2-electrode conductivity cell with adjustable cell constant, K = 1 cm-1 301 200(adapter cable K/LTA required)
TetraCon® 96 4-electrode conductivity cell with built-in temperature sensor, 301 244K = 0.609 cm-1, 1 m cable
TetraCon® L Glass/platinum 4-electrode conductivity cell with built-in temperature sensor, 301 255K approx. 1.0 cm-1, for universal use, even in partially aqueous or highly aggressive inorganic media.
TetraCon® 325/Pt Glass/platinum 4-electrode conductivity cell with built-in temperature sensor; 301 964can also be used in partially aqueous or highly aggressive solutions, K approx. 1 cm-1
For conductivity measurements at depths down to 20 mTetraCon® 325-6 As TetraCon® 325, but cable length 6 m 301 971
TetraCon® 325-10 As TetraCon® 325, but cable length 10 m 301 972
TetraCon® 325-15 As TetraCon® 325, but cable length 15 m 301 973
TetraCon® 325-20 As TetraCon® 325, but cable length 20 m 301 974
Suitable accessories
A 325/K Plastic armoring with protective hood 903 830
A 325/S Steel armoring with stainless steel protective hood, material no. 1.4571 903 831
For conductivity measurements at depths down to 100 mTA 197 LF-25 4-electrode conductivity depth cell with built-in temperature sensor, 25 m 301 980
cable with waterproof plug (IP 68), pressure resistant steel armoring andscrew-off protective hood, fits into 2” boreholes
TA 197 LF-40 As TA 197 LF-25, but with 40 m cable 301 981
TA 197 LF-60 As TA 197 LF-25, but with 60 m cable 301 982
TA 197 LF-100 As TA 197 LF-25, but with 100 m cable 301 983
Ordering Information
Ordering Information Flow-thru conductivity cells Order No.
TetraCon® DU/T Flow-thru cell with built-in temperature sensor for all standard 301 252applications in laboratories and production, connection via 10 mm dia. hose nozzles, K = 0.778 cm-1, without cable
TetraCon® DU/TH Flow-thru cell with built-in temperature sensor for checking dialyzers, 301 254connection via DIN 58 352 “Hansen connectors”, K = 0.778 cm-1, without cable
LDM/S Conductivity flow-thru cell for column chromatography or minute sample 301 750volumes, K = approx. 15 cm-1
KDU 1/T Conductivity flow-thru cell with built-in temperature sensor, for all 301 530standard applications in laboratories and production, connection via 10 mm dia. hose nozzles, K approx. 0. 8 cm-1, without cable
KDU 1/TH Flow-thru cell with built-in temperature sensor for checking dialyzers, 301 535connection via DIN 58 352 “Hansen connectors”, K approx. 0. 8 cm-1, without cable
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1 2 3
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Conductivity Cells
Ordering Information Conductivity cells for special applications
Pure and ultrapure water measurements
LR 325/01 Ultrapure water cell with built-in temperature sensor, K = 0.100 cm-1, 301 961with flow-thru vessel D 01/T and waterproof plug
LTA 01 Glass/platinum 2-electrode conductivity cell for ultrapure water, K approx. 0.1 cm-1 301 410
LR 01/T Ultrapure water cell with built-in temperature sensor, with flow-thru vessel 302 520D 01/T as standard, K = 0.100 cm-1, with 1.5 m cable and waterproof plug
LR 001/T Trace conductivity cell with built-in temperature sensor and flow-thru vessel 302 530for the measurement of conductivity in boiler feed water or deionized water as well as in partially aqueous and non-aqueous media, K = 0.0100 cm-1, with 1.5 m cable
LR 325/001 Trace conductivity cell with built-in temperature sensor and flow-thru vessel for 301 962the measurement of conductivity in boiler feed water or deionized water as well as inpartially aqueous and non-aqueous media, K = 0.0100 cm-1, cable with waterproof plug
Conductivity measurements in pastes and emulsions
TetraCon® 325/S 4-electrode conductivity cell for pastes and emulsions with built-in 301 602temperature sensor, K = 0.491 cm-1, with waterproof plug and 1.5 m cable
LTA/KS 2-electrode conductivity cell for pastes, K = 0.901 cm-1 301 603
Special applications
LDM Conductivity measuring cell for small sample volumes with injection syringe 301 700for sampling, K = approx. 150 cm-1, without cable
LTA 10 Glass/platinum 2-electrode conductivity cell for extremely high conductivity values, K approx. 10 cm-1 301 112
LTA Glass/platinum 2-electrode conductivity cell with special length, 301 100suitable for measurements in test tubes (13 mm dia.), K = approx. 1 cm-1
Connection cables and accessoriesKLF 10 Adapter cable for connection of 2-electrode conductivity cell and TFK 530 303 224
K/LTA Adapter cable for connection of 2-electrode conductivity cell and TFK 325 301 429or TFK 150
K-LDM Adapter cable with built-in 30 kohm fixed resistor, length 1 m 301 430
KKDU Connection cable with 1 m cable 301 532
KKDU 325 Connection cable with waterproof plug and 1 m cable 301 963
TH 340 Telescopic extension for TetraCon® 325 ..., 1.5 ... 3 m, with sensor holder 402 802
Protective armoring
for safe on-site use
1 SM 325 Shock-absorbing, rubber protective armoring with folding support and sensor cable clamping device
2 TG/Oxi-LF Sleeve set, suitable for SM 325 protective armoring, consisting ofelectrode sleeve, holding device and additional carrying strap forfield use. Can also be used for storing the sensor.
3 FM 325/Oxi-LF Field armoring, specially designed for rough use on-site and inindustry, extremely robust and shock-resistant thanks to protective armoring with integrated electrode sleeve, carryinghandle and additional carrying strap with holding device, sensorcable clamping device and folding support for laboratory measurements
Ordering InformationProtective armoring Order No.
SM 325 Shock-absorbing, rubber protective armoring 902 818
TG/Oxi-LF Sleeve set, suitable for protective armoring SM 325 902 812
FM 325/Oxi-LF Field armoring, specially for rough conditions 902 813
94
Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
ConductivityMeters
page Protective armoring 93 Flow-thru vessels 94 Stands and cell holders 94 Calibration and testing agents 95
Ordering Information
Flow-thru vessels
Conductivity Meter Accessories
for LTA 1, LTA, LTA 01 and TFK 530 Order No.
D 530 Flow-thru vessel of transparent PVC, 108 060suitable for conductivity cells and temperature sensors,I.D. 44 mm, V*=97 ml
for TetraCon® 325
D 201 Flow-thru vessel of transparent PVC, 203 730I.D. 18 mm, V*=13 ml
for TetraCon® 96-1,5, TetraCon® 96 and KLE 1
D 1/T Flow-thru vessel, glass 302 730I.D. 24 mm, V*=36 ml
for LR 01/T and LTA 01
D 01/T Flow-thru vessel, glass 302 750I.D. 18 mm, V*=17 ml
for LTA 100
D 100 Flow-thru vessel 302 700I.D. 27 mm, V*=40 ml
V*: filling volume without sensor
Stand STH 650
Benchtop stand with flexible electrode holder for measuring cells and temperature sensors
Stand and cell holder
Benchtop stand and cell holder Order No.
STH 650 Benchtop stand with flexible electrode holder 109 809for pH electrodes, ion sensitive electrodes, reference electrodes, temperature sensors, oxygen sensors and TetraCon® 325 conductivity cells
Ordering Information
Software and printers
Information is given onpages 180 - 183.
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95Wissenschaftlich-Technische Werkstätten GmbH & Co. KG · Dr.-Karl-Slevogt-Straße 1 · 82362 Weilheim · Germany · Tel.: +49 (0)881-183-0 · Fax: +49 (0)881-62539
Conductivity Meter Accessories
Kit for measuring the con-ductivity according to USP 24
This kit contains LR 325/01 Ultrapure water cell, D01/T Flow-thru vessel made of glass (USP-KIT 1) or stainless steel (USP-KIT 2), NIST traceable 15 µS standard with accuracy ±2% and 6R/SET/LabTesting set
Calibration standard 100 µS/cm
Shelf life 2 years, NIST traceable with accuracy ±3%
Calibration standard 15 µS/cm
Shelf life 1 year, NIST traceable with accuracy ±2%
Calibration and testing agents
Ordering Information Kit for measuring the conductivity according to USP 24 Order No.
USP Kit 1 Kit for measuring the conductivity according to USP 24, 300 569consisting of LR 325/01 Ultrapure water cell, D01/T Glass flow-thru vessel, NIST traceable 15 µS standard with accuracy ±2% and 6R/SET/LabTesting set
USP Kit 2 As USP Kit 1, but flow-thru vessel made of 300 568stainless steel instead of D01/T
Calibration agentsKS 100µS Calibration standard 100 µS/cm, shelf life 2 years, 300 578
NIST traceable with accuracy ±3% (300 ml)
KS 15µS Calibration standard 15 µS/cm, shelf life 1 year, 300 579NIST traceable with accuracy ±2% (300 ml)
EP/SET Calibration and platinization set (6 x 50 ml bottles calibration 300 570and control standard, KCl 0.01 mol/l, 30 ml platinizing solution, 1 calibration vessel), only for platinized cells
E/SET Calibration set (6 x 50 ml bottles calibration and control 300 572standard, KCl 0.01 mol/l)
Testing agents for conductivity meters6R/SET/LAB 1 Testing set for checking the conductivity meters according 302 870
to ISO 9000. Allows the measured values to be traced back to national standards.
Only for LF 3000, LF 539, LF 537 and MultiLab® P4/P56R/SET/LAB 2 Testing set for checking the conductivity meters according 302 872
to ISO 9000. Allows the measured values to be traced back to national standards.
NEW