Hach-lange 2100 AN Laboratory Turbidimeter User Manual User Manual

DOC022.52.802052100AN08/2012, Edition 2User Manual

In addition, two user-defined measurement units can be specified. Referto Application specific methods on page 45. The application specificmode of ope

Figure 3 Instrument components1 2100AN turbidimeter 7 StablCal® Calibration kit2 USEPA filter assembly 8 Gelex® secondary turbiditystandardiz

User interfaceFigure 4 Keypad1 ENTER key 7 FLOW key2 EDIT (arrow) keys 8 SIGNAL AVG key3 SAMPLE key 9 PRINT key4 RANGE key 10 LINE FE

Figure 5 Indicator lights1 Lamp icon light 7 PRINT light2 "CAL?" light 8 SIGNAL AVG light3 "Manual" light 9 CAL/Zero

StartupTurn the instrument on1. Put the instrument on a stable, level surface that is free of vibration.Do not put in direct sunlight.2. Make sure tha

calibrations. The manufacturer cannot guarantee the performance of the instrumentif calibrated with co-polymer styrenedivinylbenzene beads or other su

StablCal calibration procedure1. Remove the filterassembly. Refer to Change the filterassembly on page 48.2. Clean the lens of theUSEPA filter assem

StablCal standards storage• Do not move a StablCal standard to a different container for storage.Keep StablCal standards in the plastic case provided

7. Push RATIO to turnRatio mode on.8. Put the stray lightstandard in the samplecell holder with thetriangle on the vialaligned with thereference mar

7. Push RATIO toselect Ratio on or off.Ratio must be on forGelex standardsgreater than 40 NTU.For the 0–2 and 0–20 NTU Gelexstandards, select theRati

Clean the sample cellC A U T I O N Chemical exposure hazard. Obey laboratory safety procedures andwear all of the personal protective equipment approp

Indexing a single sample cellWhen measuring very low turbidity samples, use a single indexed sample cell or a flow cell for all measurements to get pr

7. Repeat step 6 untilthe lowest value isshown on the display.8. Put an orientationmark on the markingband near the top of thesample cell where thel

Matching sample cellsTo decrease the effects that optical differences among sample cells can have on turbidity, transmittance, color or absorbance mea

7. Repeat step 6 untilthe lowest value isshown on the display.8. Record the value.Put an orientation markon the marking bandnear the top of thesampl

Prepare dilution waterDilution water is used when indexing a sample cell or matching samplecells and to prepare formazin standards.1. Collect at least

2. Put 1/2 to 2/3 of the sample cell into the ultrasonic bath and let it standuntil visible bubbles are removed.3. Remove the sample cell from the ult

Example: Measured value = 2450 NTUActual turbidity = 2450 × 5 = 12,250 NTUFigure 6 Prepare filtered sample using membrane or glass-fiberfilter1 Fil

Measurement• Measure samples immediately to prevent temperature changes andsettling. Before a measurement is taken, always make sure that thesample is

7. Read and record thevalue when stable.Note: To print or send(via RS232) ameasurement record,push PRINT.Absorbance and transmittance measurementMeas

Table of ContentsSpecifications...

Absorbance and transmittance measurement procedureNote: To measure samples with negative absorbance, set the analytical zero using the sample with the

7. Slowly put 250 mL ofthe sample in the inletreservoir.8. After the sampleflow stops and thedisplay stabilizes, readand record the value.Note: To p

Color measurement and calibration procedure1. Make sure that the455 nm filter assemblyis installed in theinstrument.2. Push RANGE toselect manual or

7. Slowly put 250 mL ofdeionized water downthe interior edge of theinlet reservoir.Put the CU standarddown the interior edgeof the reservoir topreven

Measurement techniquesMeasurements may be made with different operation mode settings andoptional accessories.Calibrate the instrument whenever the sa

if interferences caused by color or light absorbing particles are notpresent.Using the air purge systemThe air purge system is used to keep condensati

2. Fill the flow cell and tubing with water and make sure that there areno leaks or air bubbles.Note: Air bubbles collect in areas that are not cleane

• For short-term storage (a few hours), flush the system with distilled ordeionized water and leave the flow cell full of the flush water tominimize a

Use the flow cell specifications in Table 3 to calculate the correct fill time.Make sure that the fill time includes time to fill the system and to fu

7. Push ENTER.The display shows"MM-SS MEA" (or anactual measurementtime if a measurementtime has been selectedpreviously).8. Push the arro

Clean the sample cell...

Install a cell adapterNote: Use the application specific calibration (ASC) ability of the instrument toprovide direct reading of results with cell ada

Connect to a printer or computerUse the serial interface (RS232) connector on the back of the instrumentto transmit data from the instrument to an ext

Table 5 RS232 command set (continued)Command DescriptionRMN Gets the recorder minimum value.To change the recorder minimum value, enter RMN=XXXXX(XXX

Prepare formazin standardsFor the best accuracy and long-term data comparability, use formazinstock solution from Hach to make formazin standards.Note

• Store the oiling cloth in a plastic storage bag to keep the cloth clean.• If power is lost during calibration, the new calibration data is lost andt

7. Apply a small beadof silicone oil from thetop to the bottom of thesample cell.8. Use the oiling clothprovided to apply the oilequally to the surf

Making 4000-NTU formazin stock solutionW A R N I N G Chemical exposure hazard. Obey laboratory safety procedures and wear all ofthe personal protectiv

Special research applicationsThe instrument has special features and operations for special researchapplications.Application specific methodsUse the a

Either ASC can be changed at any time, so recalibration is notnecessary.The sample is under-range if the display flashes 0s.If the display flashes 0s

4. Push UNITS/Exit to return to measurement mode.Change an ASC unit name or one ASC data pointAny ASC unit name or data point can be changed.Note: Pus

Using a manual flow cell...

Delete all the ASC data pointsEither of the ASC calibration curves can be deleted and the ASC unitname changed back to the factory default.1. Push UNI

• Replace the lamp with the same size, style and electrical rating(4708900). Refer to Replacement parts and accessorieson page 53.• Do not touch the l

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Replace a fuseD A N G E R Fire hazard. Use the same type and current rating to replace fuses.Replacement parts:• Fuse for 115 V operation, time-delay,

Table 8 Error codes (continued)Error Description SolutionERR03 Low light error1. Put the sample in the instrument again.2. Make sure that the lamp ic

Table 9 Diagnostic codes (continued)Code Display Description23 Test results are shown. Keyboard test24 Test results are shown. Memory testDelete ca

Replacement parts and accessories (continued)Description Quantity Item no.Power cord, European, 230 VAC, VDEapproved1 4683600 Printer paper, thermal

Replacement parts and accessories (continued)Description Quantity Item no.Pump, vacuum/pressure, 115V, 60 Hz,1.2 cfm1 2424800 Pump, vacuum/pressure,

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Delete all the ASC data points...

HACH COMPANY World HeadquartersP.O. Box 389, Loveland, CO 80539-0389 U.S.A.Tel. (970) 669-3050(800) 227-4224 (U.S.A. only)Fax (970) 669-2932orders@hac

SpecificationsSpecifications are subject to change without notice.Specification DetailsMeasurement method NephelometricRegulatory Meets EPA Method 180

Specification DetailsOperating conditions Temperature: 0 to 40 °C (32 to 104 °F)Relative humidity: 0–90% at 25 °C, 0–75% at 40 °C,noncondensingAltitud

C A U T I O N Indicates a potentially hazardous situation that may result in minor or moderateinjury.N O T I C E Indicates a situation which, if not a