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Operation

69

Terminating the

calibration

prematurely

When you want to terminate the calibration prematurely af-
ter a calibration step ist finished press the 

 key. The mea-

suring instrument returns to the measuring mode. The 
measuring instrument uses the last valid calibration for the 
upcoming measurements.

Note
You can switch off the instrument only after you have fin-
ished or terminated the calibration according to the program.

9 Repeat steps 4 to 8 until all required calibration stan-

dards have been measured. After calibration with cal-
ibration standard no. 4 (0.02 NTU), the measuring 
instrument automatically terminates the calibration 
program and returns to the measuring mode.

Содержание Turb 350 IR

Страница 1: ...Turb 350 IR ba41114e02 04 2003 43 Operating manual Portable Turbidimeter...

Страница 2: ...ing 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 legal claims resulting fr...

Страница 3: ...7 4 1 2 Venting the sample 59 4 2 Measuring turbidity 60 4 3 Calibration 63 4 3 1 Basic information on calibration 63 4 3 2 Calibration procedures 63 4 3 3 Preparing the calibration 65 4 3 4 Four poin...

Страница 4: ...List of contents 46...

Страница 5: ...s rapid and reliable turbidity mea surements to be carried out on individual samples This complies with the measuring method used by ISO 7027 DIN EN 27027 1 2 3 Cuvette Alignment ring Mark 4 5 Display...

Страница 6: ...alibration mode 2 Number of the selected calibration standard when the CAL display appears or Error number flashes when the error symbol appears 3 Error symbol flashes when an error occurs 4 Battery s...

Страница 7: ...eypad The Turb 350 IR has a keypad with the following 5 keys Key Function Switch measuring instrument on off Increase a value Select settings Start measurement Reduce value Select settings Call up Cal...

Страница 8: ...Overview 50...

Страница 9: ...vicinity of the measuring instrument Target group The measuring instrument was developed for measure ments on site and in the laboratory We assume that due to their professional training and experien...

Страница 10: ...on and operating safety The smooth functioning and operational safety of the mea suring instrument can only be guaranteed if the generally applicable safety measures and the specific safety instruc ti...

Страница 11: ...r a lengthy period of time l is visibly damaged l no longer operates as described in this manual If you are in any doubt please contact the supplier of the in strument Obligations of the operator The...

Страница 12: ...Safety 54...

Страница 13: ...tion standards 0 02 10 0 100 1000 NTU l Two empty cuvettes l 4 alignment rings l Cleaning cloths l Carrying case with short operating manual l 4 alkali manganese batteries type AAA Micro 3 2 Initial c...

Страница 14: ...miliar with operating the measuring instrument and the calibration procedure 1 Place the instrument with the operating panel face down on a soft surface 2 Undo the two screws 1 3 Open the lid of the b...

Страница 15: ...The cuvette must be absolutely clean see section 5 2 2 CLEANING THE CUVETTES Marking a cuvette This is how to mark a cuvette empty or full 1 Switch on the turbidity measuring instrument by pressing th...

Страница 16: ...er ring on the light protection cap of the cuvette This cuvette is now permanently marked 1 Insert the cuvette in the cuvette shaft 2 Align the marked cuvette so that the arrow on the alignment ring p...

Страница 17: ...rger air bubbles cause sudden changes in the measured values whereas smaller air bub bles are recorded by the instrument as turbidity Therefore avoid or remove air bubbles Avoiding or remov ing air bu...

Страница 18: ...the Turb 350 IR 1 Switch on the turbidity measuring instrument by pressing the key Let the turbidity measuring in strument warm up for at least 75 s During this time continue with the steps 2 to 5 2...

Страница 19: ...350 IR the display shows Or Or Or Or Overrange 8 Press the key As long as the measured value is being recorded the display flashes 9 Read off the measured value when the measurement is complete and th...

Страница 20: ...iefly display This can be caused by the following l The measuring instrument carries out an automatic switchover of the measuring range Wait until the instru ment has completed the automatic switchove...

Страница 21: ...50 IR l Four point calibration over the entire measuring range ac cording to the specified calibration program section 4 3 4 l Partial calibration over a specified period of time section 4 3 5 l Singl...

Страница 22: ...l calibration However when se lecting the calibration points the following rules must be fol lowed so that the instrument measures with the precision specified in chapter 7 TECHNICAL DATA within the c...

Страница 23: ...o not resume the calibration within 5 minutes the instrument automatically re turns to the normal measuring mode It will then continue to work with the previous calibration data Calibration To calibra...

Страница 24: ...CUVETTES 5 Press the key The following display appears 6 Wait until the calibration standard measurement has been completed At the end the display shows the turbidity value of the calibration standard...

Страница 25: ...ation according to the program 4 3 5 Partial calibration 7 Repeat steps 3 to 6 for the remaining calibration stan dard nos 3 and 4 in the same way After calibration with calibration standard no 4 0 02...

Страница 26: ...MARKING AND ALI GNING CUVETTES 6 Press the key The following display appears 7 Wait until the calibration standard measurement has been completed At the end the display shows the turbidity value of t...

Страница 27: ...nt uses the last valid calibration for the upcoming measurements Note You can switch off the instrument only after you have fin ished or terminated the calibration according to the program 9 Repeat st...

Страница 28: ...Operation 70...

Страница 29: ...e battery symbol on the display flashes In this case change the batteries as soon as possible If the batteries are too weak to provide a precise measurement the turbidity measuring instrument switches...

Страница 30: ...id of the battery compartment 2 5 Remove the old batteries from the battery compart ment 6 Insert new batteries 3 While doing so check that the poles are correct according to the diagram in the batter...

Страница 31: ...splashes immediately 5 2 2 Cleaning the cuvettes Cuvettes used for measuring turbidity must be clean There fore clean them regularly Note Scratches in the glass change the optical characteristics of t...

Страница 32: ...g instrument back for service The original packing prevents the measuring instrument from being damaged during transport Measuring instrument To finally dispose of the measuring instrument take it to...

Страница 33: ...mple see section 4 1 2 There is a foreign body in the cuvette shaft Remove the foreign body Cause Remedy Measuring range exceeded This cannot be remedied Sample is not suitable for the measurement Cau...

Страница 34: ...signal between 0 02 and 10 00 NTU is too weak Check that you have used the correct standards and if necessary repeat the calibration Cause Remedy Error during calibration signal between 10 00 and 100...

Страница 35: ...matic 1 4 point calibration Ambient temperature Sample temperature 0 C 40 C Power supply Within the range 0 01 9 99 NTU Max 0 01 NTU Within the range 10 0 100 0 NTU Max 0 1 NTU Within the range 0 500...

Страница 36: ...data 78 Dimensions of portable turbidity measuring instrument Carrying case set Total weight of set 1 22 kg Test certificates CE GS Length 165 mm Width 70 mm Height 35 mm Depth 213 mm Width 257 mm Hei...

Страница 37: ...tions 79 8 Accessories Options Description Model Order no Set calibration stan dards for Turb 350 IR 0 02 10 0 100 1000 NTU Kal Kit P Turb 350 IR 600 541 Set empty cuvettes for Turb 350 IR Cell Turb 3...

Страница 38: ...Accessories Options 80...

Страница 39: ...ional information and orientation aids Abbreviations The list of abbreviations explains the abbreviations that ap pear on the display or when dealing with the instrument Index The index will help you...

Страница 40: ...reviations Cal Calibration ERR 1 ERR 4 Error message see chapter 6 WHAT TO DO IF LCD Liquid Crystal Display NTU Nephelometric turbidity units Or Overrange Measuring range exceeded rd Read Calibration...

Страница 41: ...ent 73 Cuvettes Aligning a marked cuvette 58 Aligning an unmarked cuvette 58 marking 57 D DIN ISO measurements 63 Display elements 48 E Error messages 75 Error number 48 Error symbol 48 F Formazine Ca...

Страница 42: ...Lists 84...

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