Hach 2100P ISO Manual
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Hach 2100P ISO Manual

Hach 2100P ISO Manual

Portable turbidimeter
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CAT. NO. 44740-88
PORTABLE TURBIDIMETER
Model 2100P ISO
Instrument and Procedure Manual
© Hach Company, 2003, 2008
4/08 3ed
All rights reserved. Printed in the U.S.A.

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  • Page 1 CAT. NO. 44740-88 PORTABLE TURBIDIMETER Model 2100P ISO Instrument and Procedure Manual © Hach Company, 2003, 2008 4/08 3ed All rights reserved. Printed in the U.S.A.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS ..............3 CERTIFICATION ................5 SAFETY PRECAUTIONS ............. 9 SPECIFICATIONS ................ 11 OPERATION ..................13 SECTION 1 DESCRIPTION ............15 1.1 General Description............... 15 1.2 Accessories ..................15 1.3 Principle of Operation ..............16 1.4 Preparation for Use................ 16 1.4.1 Unpacking ................
  • Page 4 TABLE OF CONTENTS, continued 3.2.2 Orienting Sample Cells ............39 3.2.3 Matching Multiple Sample Cells......... 41 3.2.4 Removing Bubbles (Degassing).......... 43 3.2.5 Measuring Overrange Samples ........... 46 3.2.6 Condensation (Fogging)............46 3.2.7 Representative Sampling............. 46 MAINTENANCE ................47 SECTION 4 MAINTENANCE ...........

  • Page 5: Certification

    Hach Company certifies this instrument was tested thoroughly, inspected and found to meet its published specifications when it was shipped from the factory. The Model 2100P ISO Portable Turbidimeter has been tested and is certified as indicated to the following instrumentation standards: Product Safety External Power Supplies Only: 115 V ac Supply, UL Listed &...
  • Page 6 Canadian Interference-causing Equipment Regulation, IECS-003: Class “A” emission limits. Supporting test records by Hewlett Packard, Fort Collins, Colorado Hardware Test Center (A2LA # 0905-01), certified compliance by Hach Company. This Class A digital apparatus meets all requirements of the Canadian Interference-causing Equipment Regulations.
  • Page 7 1. Disconnect the external power supply or remove the batteries from the 2100P ISO Portable Turbidimeter to determine whether it is the source of the interference. 2. Move the 2100P ISO Portable Turbidimeter and its power supply away from the device receiving the interference.

  • Page 9: Safety Precautions

    SAFETY PRECAUTIONS Please read this entire manual before unpacking, setting up, or operating this instrument. Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. To ensure the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that which is specified in this manual.

  • Page 11: Specifications

    SPECIFICATIONS Specifications are subject to change without notice. Operating specifications applicable at 25 °C unless noted. Program software copyrighted by Hach Company, 1991. Measurement Method: Ratio Nephelometric signal (90°) scatter light ratio to transmitted light Range: 0–1000 FNU with automatic decimal point placement or manual range selection of 0–9.99, 0–99.9 and 0–1000 FNU...
  • Page 12 SPECIFICATIONS, continued Operating Temperature: 0 to 50 °C (32 to 122 °F) (instrument only) Operating Humidity Range: 0 to 90% RH noncondensing at 30 °C; 0 to 80% RH noncondensing at 40 °C; 0 to 70% RH noncondensing at 50 °C Power Requirements: Four AA Alkaline cells or optional battery eliminator Battery Life: Typically 300 tests with signal average mode off;...

  • Page 13: Operation

    OPERATION DANGER Handling chemical samples, standards, and reagents can be dangerous. Review the necessary Material Safety Data Sheets and become familiar with all safety procedures before handling any chemicals. DANGER La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse.

  • Page 15: Section 1 Description

    SECTION 1 DESCRIPTION 1.1 General Description The Hach Model 2100P ISO Portable Turbidimeter (Figure 1) measures turbidity from 0.01 to 1000 FNU in automatic range mode with automatic decimal point placement. The manual range mode measures turbidity in three ranges: 0.01–9.99, 10–99.9, and 100–1000 FNU. The instrument operates on four AA alkaline batteries or with an optional battery eliminator.

  • Page 16: Principle Of Operation

    Formazin Standards; 4 AA alkaline batteries; 15 mL of silicone oil; oiling cloth; carrying case; instrument manual; and quick reference card. 1.3 Principle of Operation The Model 2100P ISO Portable Turbidimeter operates on the nephelometric principle of turbidity measurement. This instrument meets the design criteria specified by ISO 7027.

  • Page 17: Battery Installation

    Service Department, Hach Company, Loveland, Colorado. The toll-free number in the United States is 800-227-4224. International customers should contact the Hach office or authorized distributor serving your area. Refer to REPAIR SERVICE on page 63. Please do not return the instrument without prior authorization from Hach.

  • Page 18: Using The Battery Eliminator And Rechargeable Batteries

    To prolong battery life, the instrument lamp turns on temporarily when the key is pressed. READ 1.4.4 Calibration The 2100P ISO Portable Turbidimeter is calibrated with Formazin Primary Standard at the factory and does not require recalibration before use. See Section 2.4 on page 22 for calibration instructions.

  • Page 19: Section 2 Operation

    SECTION 2 OPERATION 2.1 Operational Controls and Indicators Description Power key turns instrument on and off. If no keys are pressed for 5.5 minutes, the instrument turns off automatically. Performs a measurement. To conserve battery power, the lamp turns READ on only when is pressed.
  • Page 20 Description Performs a calibration or review calibration data. Also terminates a calibration or calibration review and returns to the 2100P ISO measurement mode. Edits a flashing digit in the calibration mode, or scrolls through the calibration standards (S0,S1, S2, S3) or diagnostic menu.

  • Page 21: Signal Averaging

    (For models with serial number less than 920300000800, disappears). This clears 2100 any user-entered calibration from memory; the 2100P ISO will use the default calibration for measurement. will appear and continue to CAL?

  • Page 22: Calibration

    For optimum results when using StablCal Stabilized Standards, adhere to the following recommendations: • Do not transfer the standard to another container for storage. * StablCal Stabilized Formazin is cited as a primary standard in Hach Method 8195, an acceptable version of USEPA Method 180.1.
  • Page 23 SECTION 2, continued • Do not return standard from the sample cell back into the its original container. Standard contamination will result. • Store standards between 0 and 25 °C. • For long-term storage, refrigeration at 5 °C is recommended. Do not store above 25 °C.

  • Page 24: Formazin Primary Standards

    Preparing Formazin Stock Solution Dilute formazin standard solutions from a 4000 FNU stock solution equivalent to Hach Cat. No. 2461-49. The prepared stock solution is stable for up to one year when properly prepared. An alternative to purchasing the 4000 FNU stock solution is preparing a stock solution as follows: 1.
  • Page 25 Note: Use the same dilution water for all dilutions and the sample blank. Collect at least 1000 mL of high quality dilution water (distilled or deionized water). The 2100P ISO Turbidimeter, as received from the factory, is precalibrated and may be used to check the dilution water turbidity.
  • Page 26 2.4.2.4 Preparing Formazin Dilutions (Factory recommended) Use 20, 100, and 800 FNU formazin standards for calibrating the 2100P ISO Turbidimeter. Dilutions with other FNU values can be prepared and used (see Section 2.4.3.1 on page 30). If problems occur when using alternate solutions, use the dilutions specified here.

  • Page 27: Calibrating The Turbidimeter

    SECTION 2, continued Preparing the 20, 100 and 800 FNU standards Table 1 Formazin Standard Preparation Step 1 Step 2 Step 3 Standards 20 FNU Add 100 mL of With a TenSette1 Dilute to the mark dilution water to a pipet, add 1.00 mL of with dilution water.
  • Page 28 SECTION 2, continued • If “E1” E2” are displayed, an error occurred during calibration. or “ Check the standard preparation and review the calibration; repeat the calibration if necessary. Press to cancel the error message DIAG (E1 or E2 To continue without repeating the calibration, press twice to restore the previous calibration.
  • Page 29 SECTION 2, continued 5. Press . The meter will count from 60 to 0, (67 to 0 if signal READ average is on), read the blank, and use it to calculate a correction factor for the 20 FNU standard measurement. If the dilution water is ³...
  • Page 30 CAL is pressed (See Section 5.4 on page 57). 2.4.3.1 Preparing User-selected Formazin Dilutions The formazin solutions should span the entire range of the instrument. Hach recommends preparing three standards: • 10–30 FNU • 90–110 FNU • 700–900 FNU The standards must have a difference of at least 60 FNU.
  • Page 31 SECTION 2, continued 2.4.3.2 Calibrating with User-selected Standards For accuracy, use the same sample cell or four matched sample cells for all measurements during calibration. Always insert the sample cell with the same orientation. 1. Fill a clean sample cell to the line (about 15 mL) with dilution water. Note: The same dilution water used for preparing the standards must be used in this step.

  • Page 32: Using Gelex ® Secondary Turbidity Standards

    SECTION 2, continued 12. Insert the cell into the cell compartment. 13. The display will show the S2 icon (with the 2 flashing) and 100 FNU or the value of the S2 standard for the previous calibration. 14. Edit the standard concentration using the arrow keys. 15.
  • Page 33 2.4.4.2 Routine Calibration Check With Gelex Standards The 2100P ISO Turbidimeter does not require standardization before every measurement as some turbidimeters do. Periodically, as experience dictates, check the instrument calibration using the appropriate Gelex Secondary Standard. Be sure the Gelex standards are aligned correctly when inserting them (diamond aligns with orientation mark).

  • Page 35: Section 3 Turbidity Measurement

    SECTION 3 TURBIDITY MEASUREMENT 3.1 Turbidity Measurement Measurements may be made with the signal average mode on or off and in manual or automatic range selection mode (Section 2.2 on page 21). With signal average mode off, the final value is displayed after approximately 12 seconds.
  • Page 36 Use no visible oil. silicone oil equivalent to Hach Cat. No. 1269-36, Note: Soft, lint-free cloth which has the same refractive (velvet) works well for oiling. index as glass.
  • Page 37 SECTION 3, continued SIGNAL AVERAGE Insert the sample cell Press: . Select Press: RANGE SIGNAL in the instrument cell mannual or automatic AVERAGE compartment so the range mode. diamond or orientation mark aligns with the raised orientation mark in front of the cell compartment.

  • Page 38: Measurement Notes

    SECTION 3, continued 3.1.2 Measurement Notes • Always cap the sample cell to prevent spillage of sample into the instrument. • When taking a reading, place the instrument on a level, stationary surface. It should not be held in the hand during measurement. •...

  • Page 39: Cleaning Sample Cells

    SECTION 3, continued 3.2.1 Cleaning Sample Cells Cells must be extremely clean and free from significant scratches. The glass used to make cells is easily scratched – manufacturing cells free of minor scratches and other imperfections is difficult. However, minor imperfections are effectively masked by applying silicone oil as outlined in Section 3.1.1 on page...
  • Page 40 SECTION 3, continued Fill the clean sample Press: Insert the sample cell to the line with cell into the sample high quality water compartment. Close (< 0.5 FNU). Cap and the cover. wipe with lint-free cloth. Apply silicone oil. See Section 2.4.2.2 on page for more information...

  • Page 41: Matching Multiple Sample Cells

    SECTION 3, continued 3.2.3 Matching Multiple Sample Cells Precise measurements of very low turbidity samples require the cells be optically matched or a single cell be used for all measurements. If more than one cell is used, follow this procedure to match (index) the cells: Clean and oil Fill the clean sample Press:...
  • Page 42 SECTION 3, continued READ Press: Remove the cell, Repeat step 8 until READ rotate it slightly and the value displayed for Record the cell position reinsert into the cell the second cell is within in the compartment and compartment. Close the 0.01 FNU (or 1%) of the the displayed reading.

  • Page 43: Removing Bubbles (Degassing)

    SECTION 3, continued 3.2.4 Removing Bubbles (Degassing) Before measurement, removing air and other trapped gasses from the sample is strongly recommended, even if bubbles are not visible. Four degassing methods are commonly used: • Applying a partial vacuum. • Adding a surfactant. •...
  • Page 44 SECTION 3, continued Fill a sample cell to Slowly apply the Slowly release the the mark with sample. vacuum by carefully vacuum. Remove the Insert a #2 single-hole pulling the plunger vacuum apparatus and rubber stopper and upward, then holding it. cap the cell.
  • Page 45 SECTION 3, continued refractive index of the suspended particles. Excessive ultrasound application may alter particle size and shape, thus changing sample turbidity. In some cases, ultrasound may impede air bubble removal by fracturing the bubbles, making degassing more difficult. The basic procedure for an ultrasonic bath is: 1.

  • Page 46: Measuring Overrange Samples

    Light-absorbing particles such as activated carbon and highly colored samples may also cause an instrument to “go blind”. Dilution may not correct for these interferences. The 2100P ISO will correct for the presence of light absorbing particles and color. 3.2.6 Condensation (Fogging) Condensation may occur on the outside of the sample cell when measuring a cold sample in a warm, humid environment.

  • Page 47: Maintenance

    MAINTENANCE Some of the following manual sections contain information in the form of warnings, cautions and notes that require special attention. Read and follow these instructions carefully to avoid personal injury and damage to the instrument. Only personnel qualified to do so, should conduct the maintenance tasks described in this portion of the manual.

  • Page 49: Section 4 Maintenance

    If the instrument will not turn off or on after changing batteries, and the batteries are good, remove the batteries and reinstall them. If the meter still does not function, contact Hach Service or the nearest authorized dealer. 4.3 Lamp Replacement The procedure below explains lamp installation and electrical connections.
  • Page 50 SECTION 4, continued 1. Orient the instrument so it is upside down and the top faces away from you. Remove the battery cover and at least one battery. 2. Remove the lamp assembly by grasping the tab on the left side of the assembly.
  • Page 51 SECTION 4, continued 3. Rotate the tab towards the nearest outside edge. The assembly should release and slip out easily. 4. Back the terminal block screws partially out (1 to 2 turns) and remove the old lamp leads.
  • Page 52 SECTION 4, continued 5. Gently bend the wires of the new lamp assembly into an “L” shape so they fit easily into the housing. Insert the leads into the terminal screws and tighten with clockwise turns. Gently tug on the wires to make sure they are connected to the terminal block.
  • Page 53 SECTION 4, continued 7. Snap the U-shaped bottom of the tab into the slot on the left side of the black plastic that holds the lamp assembly. 8. With your thumb, firmly slide the assembly forward until it stops. Again, push firmly against the tab to make sure the lamp is seated correctly.
  • Page 54 SECTION 4, continued 9. Replace the batteries and battery cover. 10. Insert the 800 FNU formazin standard into the sample cell. Press and hold . Then press . Release the key after the READ READ software version number disappears from the display (for models with serial numbers less than 920300000800, disappears).

  • Page 55: Section 5 Troubleshooting

    SECTION 5 TROUBLESHOOTING 5.1 Using the Diagnostic Functions Key Enter the diagnostic mode by pressing the key. Exit this mode at DIAG any time by pressing the key again. The diagnostic mode allows access to information about instrument function which may be useful for servicing and troubleshooting.

  • Page 56: The Diagnostic Procedure

    SECTION 5, continued 5.2 The Diagnostic Procedure 1. Fill a clean sample cell to the line with clear water, cap the cell and place it in the cell compartment. Press and wait until the READ reading is finished. 2. Press: DIAG icon will turn on and will be displayed...

  • Page 57: Other Instrument Diagnostics

    SECTION 5, continued 5.3 Other Instrument Diagnostics 5.3.1 Display Test Pressing and holding the key turns on all the display icons and elements so you can determine if all the elements and icons are functioning. The display test sequence will cycle as long as the key is held down.
  • Page 58 A/D overrange. Check for obstructed light path. Call Hach Service. A/D underrange. Check for open lid during reading and re-read. Check for obstructed light path. If persists, call Hach Service. Light Leak. Close lid before pressing READ Bad lamp circuit.

  • Page 59: Replacement Parts & Accessories

    REPLACEMENT PARTS Description Cat. No. ® StablCal * Calibration Set for 2100P ISO,sealed vials, < 0.1 FNU, 20 FNU, 100 FNU, and 800 FNU ...... 26594-05 AA Batteries, 4/pkg ..............19380-04 Battery Door ................46005-00 Carrying Case ................46506-00 ®...
  • Page 60 Sample Filtration and Degassing Kit........43975-10 ® StablCal Calibration Set for 2100P ISO Turbidimeter <0.1, 20, 100, 800 FNU, 500 mL each........26594-00 <0.1, 20, 100, 800 FNU, 100 mL each........26594-10 <0.1, 20, 100, 800 FNU, sealed vials ........26594-05 ®...

  • Page 61: General Information

    GENERAL INFORMATION At Hach Company, customer service is an important part of every product we make. With that in mind, we have compiled the following information for your convenience.

  • Page 62: How To Order

    Call 1-800-227-4224 or E-mail techhelp@hach.com. International Customers Hach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send E-mail to intl@hach. com or contact: In Canada, Latin America, Africa, Asia, Pacific Rim: Telephone: (970) 669-3050;...

  • Page 63: Repair Service

    REPAIR SERVICE Authorization must be obtained from Hach Company before sending any items for repair. Please contact the HACH Service Center serving your location. In the United States: Hach Company 100 Dayton Avenue Ames, Iowa 50010 (800) 227-4224 (U.S.A. only)

  • Page 64: Warranty

    On the basis of strict liability or under any other legal theory, in no event shall Hach Company be liable for any incidental or consequential damages of any kind for breach of...

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