Hach-lange 2100 N IS Laboratory Turbidimeter User Manual User Manual

DOC022.52.802042100N IS08/2012, Edition 2User Manual

Figure 2 Back overview1 Power cord connector 4 DB9 connector for RS232 cable2 Fuse holder 5 Air purge fitting3 Power switchProduct componen

User interfaceFigure 4 Keypad1 ENTER key 5 UNITS AVG key key2 EDIT (arrow) keys 6 SETUP key3 RANGE key 7 PRINT key4 UNITS/Exit key 8

Figure 5 Indicator lights1 NTU light 6 CAL? light2 FNU light 7 UNITS AVG light3 Lamp light 8 SETUP light4 Manual Range light 9 S0–S3

4. Connect the power cord to a power socket with ground contact.5. Push the power switch on the back of the instrument to turn theinstrument on.Turn t

• All nephelometric (turbidity units of measure) calibrations are done atthe same time.• The 4000-NTU standard does not have to be measured duringcali

7. Remove the vialfrom the sample cellholder.8. Do steps 5–10 forthe other StablCal vials(from lowest to highestNTU standard).The S0 light turns ona

Measure the Gelex stray light standardMeasure the Gelex stray light standard when the instrument is first received. Record the value on the Gelex vial

Measure the Gelex secondary turbidity standardsMeasure the Gelex secondary turbidity standards each time the instrument is calibrated and record the n

Calibration verificationAt intervals, measure the Gelex secondary turbidity standard that isclosest in value to the turbidity range to be measured. Do

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 measurements, measure samples in matche

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 the sampleProper sampling techniques are important to get accuratemeasurements.Prepare a representative sampleA representative sample accurate

If possible, do not use heat to accelerate degassing. Heat may changethe properties of the suspended particles and cause volatile componentsto come ou

Figure 6 Prepare filtered sample using membrane or glass-fiberfilter1 Filter pump 4 Stopper 7 Filter2 Hose 5 Filter holder3 Filter flask

• Avoid instrument operation in direct sunlight.Turbidity measurement procedure1. Rinse a clean,empty sample cell twotimes with the solutionto be mea

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

Figure 8 Standard shop air1 Particle filter 5 Filter (Balston 100-12-BX orequivalent)2 Air dryer 6 Auto drain (Balston 20-105 orequivalent)3

6. Air dry the parts after cleaning.Flow cell maintenance• Keep all parts of the flow cell assembly clean.• At intervals, replace all the tubing to ma

Table of ContentsSpecifications...

Install a cell adapter1. Align the tab on the cell adapter toward the front of the instrument(Figure 9).2. Put the cell adapter in the sample cell hol

3. Push ENTER.4. Use the arrow keys to change the value.5. Push ENTER.6. Push SETUP.Computer (RS232) commandsA communication program (i.e., such as Wi

Table 5 Formazin standard preparationStandard Step 1 Step 2 Step 3 20 NTU Add 100 mL ofdilution water to aclean 200-mL ClassA volumetric flask.Refe

Formazin calibration procedureFor the best accuracy, use four matched sample cells or the same sample cell for all measurements during calibration. Re

7. Push ENTER.The instrument displaycounts down from 60 to0, and then measuresthe standard.The instrument showsthe next expectedstandard (e.g., 20.00

• The calibration points that are shown on the display must be changedas they occur so they agree with the turbidity of the user-definedstandards. Ref

To replace a fuse, refer to the illustrated steps in Figure 10.Figure 10 Replace a fuseTroubleshootingRefer to the tables in this section for error c

Table 6 Error codes (continued)Error Description SolutionERR06 A/D is under the range1. Make sure that no object is in the lightpath.2. Contact Custo

Replacement parts and accessoriesNote: Product and Article numbers may vary for some selling regions. Contact theappropriate distributor or refer to t

Replacement parts and accessories (continued)Description Quantity Item no.0.1 NTU, StablCal™ low-level turbidityverification standards (not for instru

Prepare the sample...

38 English

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

Prepare formazin standards...

Table of Contents4

SpecificationsSpecifications are subject to change without notice.Specification DetailsMeasurement method NephelometricRegulatory Meets ISO 7027, DIN

Specification DetailsWeight 3.8 kg (8.5 lb)Certification CE, cETLus1Turbidity specifications identified using recently prepared formazin standardand m

CertificationCanadian Radio Interference-Causing Equipment Regulation,IECS-003, Class A:Supporting test records reside with the manufacturer.This Clas