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ba55320e05

11/2009

TetraCon 700

Operating manual

Conductivity measuring cell

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Содержание TetraCon 700

Страница 1: ...ba55320e05 11 2009 TetraCon 700 Operating manual Conductivity measuring cell...

Страница 2: ...est version of the present operating manual can be found on the Internet under www WTW com Copyright Weilheim 2009 WTW GmbH Reprinting even as excerpts is only allowed with the explicit written author...

Страница 3: ...ral safety instructions 25 3 Commissioning 27 3 1 Scope of delivery 27 3 2 Installation 27 3 2 1 Connection to the measuring transmitter 27 4 Measuring Operation 28 4 1 Measuring 28 4 2 Application de...

Страница 4: ...ructure of the TetraCon 700 conductivity measuring cell Fig 1 1 Structure of the TetraCon 700 conductivity measuring cell 1 Shaft 2 Closing head with protective ring 3 Voltage electrodes 4 Temperature...

Страница 5: ...ces from primary or secondary polarization effects which ensures a high degree of measuring accuracy The modern epoxy casting technique reduces the danger of breaking the conductivity measuring cell i...

Страница 6: ...y instructions in this operating manual can be recognized by the warning symbol triangle in the left column The signal word e g Caution indicates the danger level Warning indicates instructions that m...

Страница 7: ...ecure technical condition The smooth functioning and operational safety of the conductivity measuring cell can only be guaranteed if the generally applicable safety measures and the specific safety in...

Страница 8: ...es as described in this manual If you are in any doubt contact the supplier of your conductivity measuring cell Obligations of the operator The operator of the conductivity measuring cell must ensure...

Страница 9: ...ection to the measuring transmitter The TetraCon 700 connection cable has a cable plug to be connected to the Cond input socket of a measuring transmitter It is connected to the terminal strip of a me...

Страница 10: ...ation If the clearance is less than that the cell constant changes This leads to inexact measurement results Normally measuring transmitters have a correction function that can compensate for this inf...

Страница 11: ...e necessary to adapt the cell constant due to the influence of the measuring environment e g of boundary fields In chapter 6 WHAT TO DO IF of this operating manual you will find the correct values to...

Страница 12: ...curacy Therefore we recommend cleaning the conductivity measuring cell regularly according to visual checks Especially before measuring low conductivity values we recommend to clean the measuring cell...

Страница 13: ...ng cell Boundary fields not observed At the electrodes the conduc tivity measuring cell must be surrounded by a clearance of at least 5 cm at the base and sides Otherwise the cell con stant will chang...

Страница 14: ...and accessories TetraCon 700 32 ba55320e05 11 2009 7 Replacement parts and accessories Adapter Note Information on further accessories is given in the WTW catalog and on the Internet Model Order no AD...

Страница 15: ...ter 40 mm approx 660 g without sensor connection cable Sensor head PVC epoxy filling material Electrodes housing of the temperature sensor Graphite Shaft Stainless steel 1 4571 Closing head POM Protec...

Страница 16: ...1 Wiring diagram Pin assignment 7 pole screw plug Shield Thermistor NTC Thermistor NTC Current electrode I1 ring Voltage electrode U1 Voltage electrode U2 Current electrode I2 ring 6 1 2 3 5 7 4 NTC 3...

Страница 17: ...23 EC pressure equipment directive 8 4 Characteristic data on delivery Temperature measurement Cell constant Measuring medium 0 C 50 C Storage transport 5 C 65 C storage in air recommended Max admissi...

Страница 18: ......

Страница 19: ...buildings factories and farms In more than 150 countries we have strong long standing relationships with customers who know us for our powerful combination of leading product brands and applications...

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