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HACH LANGE 2100N User Manual

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DOC022.52.80203
2100N
08/2014, Edition 5
User Manual

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  • Page 1 DOC022.52.80203 2100N 08/2014, Edition 5 User Manual...

  • Page 3: Table Of Contents

    Table of Contents Specifications ....................................5 General information ..................................6 Safety information ....................................6 Use of hazard information ..................................6 Precautionary labels ..................................6 Certification ......................................7 Product overview ....................................7 Product components ..................................8 User interface ....................................9 Startup .......................................10 Turn the instrument on ..................................10 Turn the keypad sound off (optional) ...............................11 Standard operation ..................................11 ®...
  • Page 4 Table of Contents Prepare the sample ..................................22 Prepare a representative sample ..............................22 Remove air bubbles from the sample ............................22 Apply a vacuum .................................22 Use an ultrasonic bath ...............................22 Apply heat ..................................22 Prevent condensation on a sample cell ............................23 Measure over-range samples ..............................23 Sample dilution ..................................23 Turbidity measurement ..................................24 Measurement notes ..................................24...
  • Page 5 Table of Contents Advanced operation ..................................32 Calibrate the turbidimeter with formazin standards ..........................32 Prepare formazin standards ..............................32 Calibration notes ..................................32 Formazin calibration procedure ..............................33 Making 4000-NTU formazin stock solution ..........................35 Calibrate the turbidimeter with user-selected formazin standards ....................35 Prepare formazin standards – user selected ..........................35 Change the calibration points ..............................35 Maintenance ....................................36...
  • Page 6 Table of Contents...

  • Page 7: Specifications

    Specifications Specification Details Specifications are subject to change without notice. Repeatability ±1% of reading or 0.01 NTU, whichever is greater (under reference conditions) Specification Details Response time Signal averaging off: 6.8 seconds Measurement method Nephelometric Signal averaging on: 14 seconds (when 10 measurements are used to calculate the average) Regulatory Meets EPA Method 180.1...

  • Page 8: General Information

    Safety information Specification Details N O T I C E Sample cells Round cells 95 x 25 mm (3.74 x 1 in.) borosilicate glass with rubber-lined screw caps The manufacturer is not responsible for any damages due to misapplication or Note: Smaller sample cells (less than 25 mm) can be used misuse of this product including, without limitation, direct, incidental and when a cell adapter is used.

  • Page 9: Certification

    IECS-003, Class A: Product overview Supporting test records reside with the manufacturer. The 2100N laboratory turbidimeter measures turbidity in NTUs This Class A digital apparatus meets all requirements of the Canadian (nephelometric turbidity units), NEPs (nephelos) and EBCs (European Interference-Causing Equipment Regulations.

  • Page 10: Product Components

    4 Cover for the sample cell compartment 2 Sample cell holder 5 Five-digit LED display 3 Light shield Figure 2 Back overview ® 1 2100N turbidimeter 6 StablCal Calibration kit ® 2 USEPA filter assembly 7 Gelex secondary turbidity standardization kit...

  • Page 11: User Interface

    User interface Table 1 Key descriptions (continued) Description Figure 4 Keypad Turns Ratio on or off. Turns signal averaging on or off. Sends the data that is on the display to a printer or computer. Sends a calibration data report to a printer or computer when in Calibration mode.

  • Page 12: Startup

    Table 2 Light descriptions (continued) Figure 5 Indicator lights Light Description Illuminated when the instrument light source is on. Flashes when there is not sufficient light for measurement. Manual Illuminated when the instrument is in manual ranging mode. Range Auto Illuminated when the instrument is in auto ranging mode.

  • Page 13: Turn The Keypad Sound Off (Optional)

    4. Connect the power cord to a power socket with ground contact. Prepare the StablCal standards 5. Push the power switch on the back of the instrument to turn the When received and at intervals: instrument on. 1. Clean the exterior surface of the StablCal vials with laboratory glass cleaning detergent.

  • Page 14: Stablcal Calibration Procedure

    • All nephelometric (turbidity units of measure) calibrations are done at • Clean the USEPA filter assembly before doing a primary calibration, the same time. or at least every 3 months (which is the USEPA-recommended primary calibration interval). • Ratio-on and Ratio-off calibration data is measured and recorded at the same time.

  • Page 15: Stablcal Standards Storage

    7. Use the oiling cloth 8. Put the vial in the 9. Push ENTER. 10. Remove the vial 11. Do steps 5–10 for 12. Push CAL. to apply the oil equally sample cell holder with from the sample cell the other StablCal vials The instrument display The instrument saves to the surface of the...

  • Page 16: Measure The Gelex Stray Light Standard

    Measure the Gelex stray light standard Measure the Gelex stray light standard when the instrument is first received. Record the value on the Gelex vial with a permanent marker one time. 1. Clean the stray light 2. Apply a small bead 3.

  • Page 17: Measure The Gelex Secondary Turbidity Standards

    Measure the Gelex secondary turbidity standards Measure the Gelex secondary turbidity standards each time the instrument is calibrated and record the new values on the Gelex vials with a water soluble marker. 1. Clean the Gelex 2. Apply a small bead 3.

  • Page 18: Calibration Verification

    7. Push RATIO to 8. Put the 0–2 NTU 9. Read the value 10. Record the value 11. Do steps 7–10 for select Ratio on or off. Gelex vial in the sample when stable. Remove on the white diamond the other Gelex vials cell holder with the the vial from the space on the vial using...

  • Page 19: Clean The Sample Cell

    2. Fully rinse the sample cell many times with distilled or deionized Clean the sample cell water. C A U T I O N 3. Clean the internal and external surfaces of the sample cell and cap with 1:1 hydrochloric acid. 4.

  • Page 20: Indexing A Single Sample Cell

    Indexing a single sample cell When measuring very low turbidity samples, use a single indexed sample cell or a flow cell for all measurements to get precise and repeatable measurements. As an alternative, optically matched sample cells can be used. Refer to Matching sample cells on page 20.
  • Page 21 7. Repeat step 6 until 8. Put an orientation the lowest value is mark on the marking shown on the display. band near the top of the sample cell where the lowest value is shown. English 19...

  • Page 22: Matching Sample Cells

    Matching sample cells To decrease the effects that optical differences among sample cells can have on turbidity measurements, measure samples in matched sample cells. It may not be possible to match all sample cells due to the differences in glass. 1.

  • Page 23: Prepare Dilution Water

    7. Repeat step 6 until 8. Record the value. 9. Put the second 10. Remove the 11. Repeat step 10 12. Put an orientation the lowest value is Put an orientation mark sample cell in the sample cell, turn it until the value matches mark on the marking shown on the display.

  • Page 24: Prepare The Sample

    Prepare the sample Apply a vacuum Apply a vacuum with any available, clean, oil-free vacuum source, such Proper sampling techniques are important to get accurate as the sample degassing kit, or an electric or hand-operated pump measurements. equivalent to those in Accessories on page 40.

  • Page 25: Prevent Condensation On A Sample Cell

    If possible, do not use heat to accelerate degassing. Heat may change When too much light is absorbed by the sample, the lamp icon on the the properties of the suspended particles and cause volatile components instrument display flashes. to come out of the solution. Sample dilution Gentle heat may be used to remove bubbles from very viscous samples Use filtered sample, deionized water or distilled water for sample...

  • Page 26: Turbidity Measurement

    Measurement notes Figure 6 Prepare filtered sample using membrane or glass-fiber filter Proper measurement techniques are important in minimizing the effects of instrument variation, stray light and air bubbles. For accurate and repeatable measurements: Instrument • Make sure that the instrument is on a level, stationary surface that is free of vibration during the measurement.

  • Page 27: Turbidity Measurement Procedure

    Measurement • Avoid sample dilution when possible. • Avoid instrument operation in direct sunlight. • Measure samples immediately to prevent temperature changes and settling. Before a measurement is taken, always make sure that the sample is homogeneous throughout. Turbidity measurement procedure 1.

  • Page 28: Measurement Techniques

    7. Read and record the value when stable. Note: To send (via RS232) a measurement record, push PRINT. Measurement techniques display flashes 9s when Ratio is off and the measurement is greater than 40 NTUs (268 nephelos or 9.8 EBCs). Turn Ratio on to increase Measurements may be made with different operation mode settings and the range.

  • Page 29: Ratio On Or Off

    Figure 7 Figure 8 show the methods for connecting the two types of Ratio on or off air supply to the instrument. Ratio on provides very good linearity, calibration stability and a wide measurement range. Ratio on helps correct for interference when color Note: The dryer and filter are not necessary if dry nitrogen is used.

  • Page 30: Using A Flow Cell

    Clean a flow cell assembly Using a flow cell C A U T I O N 1. Disassemble the flow cell assembly. 2. Clean the inside and outside of the glass parts with a laboratory Do not use a flow cell with flammable samples or those that contain hydrocarbons, solvents, concentrated acids or concentrated bases that may glass cleaning detergent.

  • Page 31: Flow Cell Storage

    flow cell, put the glass flow cell in liquid detergent for 24 hours and Note: Performance specifications may be different than shown in Specifications on page 5 when test tubes, sample cells or ampules less than 25 mm are used. then rinse fully.

  • Page 32: Remove A Cell Adapter

    The Citizen Model iDP 562RSL II printer requires configuration for transmitted to a printer as a 39-character string plus the line feed and compatibility with the 2100N turbidimeter. Set the switches and jumper carriage return. positions on the Citizen printer board as shown in...

  • Page 33: Computer (Rs232) Commands

    1. Set switches 1, 2, 3, 4, 5 and 8 to OFF. Table 5 shows the RS232 command set for the instrument. 2. Set switches 6, 7, 9 and 10 to ON. Switch 9 and 10 set to ON sets a Table 5 RS232 command set 1200 baud rate.

  • Page 34: Advanced Operation

    Advanced operation Table 6 Formazin standard preparation (continued) Standard Step 1 Step 2 Step 3 Calibrate the turbidimeter with formazin standards 200 NTU Add 50 mL of dilution With a TenSette Dilute to the mark The instrument may be calibrated using prepared formazin standards water to a clean 100- Pipet, add 5.00 mL of with dilution water.

  • Page 35: Formazin Calibration Procedure

    • In Calibration mode, automatic range and signal averaging on are • Ratio-on and Ratio-off calibration data is measured and recorded at selected. When calibration is completed, all operational modes go the same time. back to the last settings. • Clean the USEPA filter assembly before doing a primary calibration, •...
  • Page 36 7. Apply a small bead 8. Use the oiling cloth 9. Put the sample cell 10. Push ENTER. 11. Remove the 12. Do steps 5–11 for of silicone oil from the provided to apply the oil in the sample cell sample cell from the the other formazin The instrument display...

  • Page 37: Making 4000-Ntu Formazin Stock Solution

    Making 4000-NTU formazin stock solution Prepare formazin standards – user selected User-selected values of formazin standards are prepared using the W A R N I N G same method that is used to prepare the recommended formazin Chemical exposure hazard. Obey laboratory safety procedures and wear all of standards.

  • Page 38: Maintenance

    Maintenance Clean the filter assembly Note: Be careful not to push the lens out of the filter assembly. D A N G E R 1. Clean both sides of the lens of the filter assembly with glass cleaner, Multiple hazards. Only qualified personnel must conduct the tasks lens cleaner or isopropyl alcohol, and a cotton-tipped swab or lens described in this section of the document.
  • Page 39 English 37...

  • Page 40: Replace A Fuse

    Troubleshooting Replace a fuse Refer to the tables in this section for error codes, diagnostic codes, D A N G E R common problem messages or symptoms, possible causes and corrective actions. Fire hazard. Use the same type and current rating to replace fuses. Error codes Replacement parts: Table 7...

  • Page 41: Diagnostic Codes

    Table 7 Error codes (continued) Table 7 Error codes (continued) Error Description Solution Error Description Solution ERR03 Low light error ERR10 System voltage out of 1. Put the sample in the instrument again. 1. Turn the instrument off and then back on. range 2.

  • Page 42: Flashing 9S

    1. Turn off the instrument. Replacement parts (continued) 2. Push and hold CAL. Description Quantity Item no. 3. Turn on the instrument. The CAL? light flashes. The instrument starts in Calibration mode. Filter assembly, USEPA 3031200 4. Calibrate the instrument before use. Fuse for 115 V operation, time-delay, 3030700 250 V, 1.6 A, UL/CSA approved...
  • Page 43 Accessories (continued) Accessories (continued) Description Quantity Item no. Description Quantity Item no. Cell adapter, 16 mm 3033500 ® TenSette Pipet Tips 2199725 Cell adapter, 19 mm 3033600 Tubing, tygon, ¼-inch OD x inch wide, 1 ft 4134400 for the manual or automated flow cell Filter disks 2323810 Tubing, tygon,...
  • Page 44 42 English...
  • Page 46 Tel. +49 (0) 2 11 52 88-320 SWITZERLAND Fax (970) 669-2932 Fax +49 (0) 2 11 52 88-210 Tel. +41 22 594 6400 orders@hach.com info@hach-lange.de Fax +41 22 594 6499 www.hach.com www.hach-lange.de © Hach Company/Hach Lange GmbH, 2012, 2014. All rights reserved. Printed in Germany.

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