Xylem WTW Turb 355 T Operating Manual
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Xylem WTW Turb 355 T Operating Manual

Xylem WTW Turb 355 T Operating Manual

Portable turbidimeter
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OPERATING MANUAL
ba75454e04 11/2020
Turb 355 T/IR
PORTABLE TURBIDIMETER

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  • Page 1 OPERATING MANUAL ba75454e04 11/2020 Turb 355 T/IR PORTABLE TURBIDIMETER...
  • Page 2 Turb 355 T/IR Copyright © 2020, Xylem Analytics Germany GmbH Printed in Germany. ba75454e04 11/2020...

  • Page 3: Table Of Contents

    Turb 355 T/IR Contents Overview ....... 4 1.1 Display ........5 1.2 Keypad .

  • Page 4: Overview

    Overview Turb 355 T/IR Overview The Turb 355 T/IR enables rapid and reliable turbidity measurements to be carried out on individual samples. The measuring method used corresponds to DIN EN ISO 7027 (Turb 355 IR) or US EPA 180.1 (Turb 355 T). 4 2 8 3 TURB 355 IR Cuvette in the cuvette shaft...

  • Page 5: Display

    Turb 355 T/IR Overview Display The LCD display has the following display elements: ...8 Calibration symbol - instrument in Calibration mode Error symbol - flashes when an error occurs Battery symbol - is illuminated if the battery needs to be changed Measuring unit NTU or FNU Main line ba75454d04...

  • Page 6: Keypad

    Overview Turb 355 T/IR Keypad The Turb 355 T/IR has a keypad with the following 5 keys: Function Switch measuring instrument on/off Select calibration standard Start measurement; press and hold: index the cell; release again: start measurement or calibration Call up or terminate calibration mode ba75454d04 11/2020...

  • Page 7: Safety

    Turb 355 T/IR Safety Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the measuring instrument. Consequently, all responsible personnel must read this operating manual before working with the measuring instrument. The operating manual must always be available within the vicinity of the measuring instrument.

  • Page 8: Authorized Use

    Safety Turb 355 T/IR Authorized use Authorized use consists exclusively of the turbidity measurement of individual samples on site or in a laboratory environment. The technical specifications given in the T ECHNICAL chapter must be observed. Only the operation and running of the measuring instrument according to the instructions given in this operating manual is authorized.
  • Page 9 Turb 355 T/IR Safety Safe operation If safe operation is no longer possible, the instrument must be taken out of service and secured against inadvertent operation! Safe operation is no longer possible if the measuring instrument  has been damaged in transport ...

  • Page 10: Commissioning

    Commissioning Turb 355 T/IR Commissioning Scope of delivery  Turb 355 IR or Turb 355 T handheld turbidimeter  Operating manual  3 calibration standards (0.02 / 10.0 / 1000 NTU/FNU)  Two empty cuvettes  3 marking rings  Cleaning cloths ...
  • Page 11 Turb 355 T/IR Commissioning Display when After switching on or calibrating the following display ready to measure indicates that the instrument is ready to measure: - r d - Display during While measuring, the instrument displays moving dashes measurement prior to displaying a stable measured value: After approx.

  • Page 12: Operation

    Operation Turb 355 T/IR Operation Instructions for operating 4.1.1 Marking and indexing cuvettes Even completely clean quality cuvettes exhibit tiny directional differences in their light transmittance. Therefore, if you want to achieve accurate and reproducible measurement results, it is necessary to always index the sample cuvettes and calibration standards in the same way (see section 2130 of the "Standard Methods for the Examination of Water and Wastewater", 19th edition).
  • Page 13 Turb 355 T/IR Operation 2 Make sure that the outside of the cuvette is clean, dry, and free of fingerprints. 3 Insert the calibration standard in the cuvette shaft so that it clicks into place. 4 Slowly rotate the calibration standard by one complete rotation (by 360 °) in small steps and hold key depressed while doing so.

  • Page 14: Venting The Sample

    Operation Turb 355 T/IR Indexing a A marked calibration standard is indexed as follows: calibration standard during calibration 1 Insert the marked calibration standard in the cuvette shaft so that it clicks into place. 2 Turn the calibration standard so that the arrow on the marking ring points to the mark on the enclosure.

  • Page 15: Measuring Turbidity

    Turb 355 T/IR Operation Measuring turbidity Caution Never pour liquid directly into the cuvette shaft. Always use a cuvette for the measurement. The measuring instrument only measures precisely when the cuvette is closed with the black light protective cap (WTW cuvettes). Note The outside of the cuvette always has to be clean, dry, and free of fingerprints.
  • Page 16 Operation Turb 355 T/IR 5 Make sure that the outside of the cuvette is clean, dry, and free of fingerprints. 6 Insert the cuvette in the cuvette shaft so that it clicks into place. 7 Align the cuvette: Slowly rotate the cuvette by one complete rotation (by 360 °) in small steps and hold the depressed while doing so.
  • Page 17 Turb 355 T/IR Operation Display when If the measured value is outside the measuring range of the measuring range is Turb 355 T/IR, 1100 flashes on the display: exceeded CAL 1 1 1 0 0 Switching the meter To switch the meter off, press the key.

  • Page 18: Calibration

    Operation Turb 355 T/IR Calibration 4.3.1 Basic information on calibration Why calibrate? Just like any other measuring instrument, the measuring accuracy of the Turb 355 T/IR has to be checked and adjusted at regular intervals. When to calibrate? Under normal conditions, we recommend calibrating the turbidimeter at least every three months.

  • Page 19: Preparing The Calibration

    Turb 355 T/IR Operation values lie in a limited range (partial calibration). However, when selecting the calibration points, the following rules must be followed so that the instrument measures with the precision specified in chapter 7 T within the ECHNICAL DATA calibration period: ...

  • Page 20: Three-Point Calibration

    Operation Turb 355 T/IR 4.3.4 Three-point calibration Calibration The three-point calibration according to the calibration sequence program calibrates the instrument using the calibration standards in the following order: 1000 > 10.0 > 0.02 NTU/FNU Note If, after the end of a calibration step, you do not resume the calibration within 5 minutes, the instrument automatically switches itself off.
  • Page 21 Turb 355 T/IR Operation 3 Insert the 1000 NTU/FNU calibration standard in the cuvette shaft so that it clicks into place. 4 Press the key and align the cuvette as described on page 12. After releasing the key a 30 seconds countdown is displayed.

  • Page 22: Partial (User-Defined) Calibration

    Operation Turb 355 T/IR 7 Insert the 0.02 NTU/FNU calibration standard in the cuvette shaft so that it clicks into place. 8 Press the key and align the cuvette as described on page 12. After releasing the key a 30 seconds countdown is displayed.
  • Page 23 Turb 355 T/IR Operation 1 0 0 0 3 If required, select another calibration standard (10.0 or 0.02 NTU/FNU) with the key. 4 Insert the selected (flashing) calibration standard in the cuvette shaft so that it clicks into place. 5 Press the key and align the cuvette as described on page 12.

  • Page 24: Maintenance, Cleaning, Disposal

    Maintenance, cleaning, disposal Turb 355 T/IR Maintenance, cleaning, disposal Changing the batteries Battery symbol The batteries must soon be changed if the battery symbol flashes flashes on the display: 4 2 8 3 The batteries are nearly empty and should soon be exchanged.
  • Page 25 Turb 355 T/IR Maintenance, cleaning, disposal Battery replacement 1 Switch off the turbidimeter: Press the key. 2 Place the instrument with the operating panel face down on a soft surface. 3 Undo the two screws (1). 4 Open the lid of the battery compartment (2). 5 Remove the old batteries from the battery compartment.

  • Page 26: Cleaning

    Maintenance, cleaning, disposal Turb 355 T/IR Cleaning 5.2.1 Cleaning the instrument Occasionally wipe the outside of the instrument with a damp, lint-free cloth. Disinfect the housing with isopropanol as required. Caution Avoid contact with acetone or similar detergents that contain solvents as these can damage the housing.

  • Page 27: Disposal

    Turb 355 T/IR Maintenance, cleaning, disposal Disposal Packing This measuring instrument is sent out in protective transport packing material. We recommend keeping the packing material in case you have to send the instrument back for service. The original packing prevents the instrument from being damaged during transport.

  • Page 28: What To Do If

    What to do if... Turb 355 T/IR What to do if... 1100 Flashing Cause Remedy display – Measuring range – This cannot be remedied. exceeded Sample is not suitable for the measurement Measured values Cause Remedy that are obviously – Cuvette contaminated –...
  • Page 29 Turb 355 T/IR What to do if... Error message Cause Remedy ERR and CAL are – Error during calibration: – Check that you have used displayed The standard used is the correct standards and incorrect or too old whether the standards are not too old.

  • Page 30: Technical Data

    Technical data Turb 355 T/IR Technical data Measuring principle Turb 355 IR Nephelometric acc. to DIN EN ISO 7027 Turb 355 T Nephelometric according to US EPA 180.1 Light source Turb 355 IR Infrared LED Turb 355 T White light tungsten lamp Measuring range 0.01 - 1100 NTU/FNU Resolution...
  • Page 31 Turb 355 T/IR Technical data Ambient Storage - 25 °C ... + 65 °C temperature Operation 0 °C ... + 50 °C Sample temperature 0 °C - 50 °C Power supply Batteries 4 x alkali-manganese, size AAA/Micro Lifetime Approx. 5000 measurements Dimensions of Length 165 mm...

  • Page 32: Accessories, Options

    Accessories, Options Turb 355 T/IR Accessories, Options Description Model Order Set of calibration standards Kal. Kit P 600 547 for Turb 355 T/IR Turb 355 IR/T 0.02 / 10.0 / 1000 NTU/ Set of empty cuvettes Cell Turb 350/SET 600 606 (3 pieces) for Turb 350/355 IR or Turb 355 T...

  • Page 33: Lists

    Turb 355 T/IR Lists Lists This chapter provides additional information and orientation aids. Abbreviations The list of abbreviations explains the abbreviations that appear on the display or when dealing with the instrument. Index The index will help you to find the topics that you are looking for.
  • Page 34 Lists Turb 355 T/IR Abbreviations Calibration Error message (see chapter 6 W ...) HAT TO DO IF Formazine nephelometric unit Liquid Crystal Display Nephelometric turbidity units -rd- Read Calibration step active ba75454d04 11/2020...
  • Page 35 Turb 355 T/IR Lists Index calibration standard ..14 sample cuvette ....12 Air ......14 Initial commissioning .
  • Page 36 Turb 355 T/IR Lists ba75454d04 11/2020...
  • Page 38 For more information on how Xylem can help you, go to xyleminc.com. ® Service and Returns: Xylem Analytics Germany Sales GmbH &...

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Wtw turb 355 ir

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