wtw TetraCon 700 SW Operating Manual Download Page 1 | Manualshive

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ba75538e01

04/2005

TetraCon

®

700 SW

19

Operating manual

Conductivity measuring cell

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Summary of Contents for TetraCon 700 SW

Page 1: ...ba75538e01 04 2005 TetraCon 700 SW 19 Operating manual Conductivity measuring cell...

Page 2: ...ces between this operating manual and your instrument Also we cannot guarantee that there are absolutely no errors in this manual Therefore we are sure you will understand that we cannot accept any le...

Page 3: ...use 25 2 3 General safety instructions 26 3 Commissioning 27 3 1 Scope of delivery 27 3 2 Installation 27 4 Measuring Operation 29 4 1 Measuring 29 4 2 Application dependent settings 30 5 Maintenance...

Page 4: ...TetraCon 700 SW 22 ba75538e01 04 2005...

Page 5: ...ucture of the TetraCon 700 SW conductivity measuring cell Fig 1 1 Structure of the TetraCon 700 SW conductivity measuring cell 1 Shaft 2 Closing head with protective ring 3 Voltage electrodes 4 Temper...

Page 6: ...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 in ro...

Page 7: ...e signal word e g Caution indicates the level of the danger Warning indicates instructions that must be followed precisely in order to prevent serious dangers to persons Caution indicates instructions...

Page 8: ...conductivity measuring cell Protect the conductivity measuring cell particularly against frost or overheating Safe operation If safe operation is no longer possible the conductivity measuring cell mus...

Page 9: ...ction to the measuring transmitter The TetraCon 700 SW 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 me...

Page 10: ...Commissioning TetraCon 700 SW 28 ba75538e01 04 2005...

Page 11: ...on If the gap 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 influence Th...

Page 12: ...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 set for some products of the WTW acces...

Page 13: ...measuring accuracy Therefore we recommend cleaning the conductivity measuring cell regularly according to visual checks Especially before measuring low conductivity values we recommend to clean the me...

Page 14: ...y field not maintained The conductivity measuring cell must be surrounded by a gap of at least 5 cm at the base and sides when measuring at the electrodes Otherwise the cell constant will change see s...

Page 15: ...lacement parts and accessories 33 ba75538e01 04 2005 7 Replacement parts and accessories Adapter Note Information on further accessories is given in the WTW catalog and in the Internet Model Order no...

Page 16: ...Four electrodes measurement Temperature sensor Integrated NTC 30 30 k 25 C Dimensions Weight Material 59 5 160 37 5 223 40 approx 860 g without sensor connection cable Sensor head PVC epoxy filling ma...

Page 17: ...delines and norms used Test certificates UL cUL Length 15 0 m special lengths on request Diameter 8 8 mm Smallest allowed bend radius Permanent bend 180 mm Short time bend 90 mm Connection Screw plug...

Page 18: ...agram 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 30 k Measuri...

Page 19: ...to article 3 3 of the directive 97 23 EC pressure equipment directive 8 4 Characteristics when delivered Temperature measurement Cell constant Measuring medium 0 C 50 C Storage transport 5 C 65 C stor...

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