Hach 2100N Basic User Manual

DOC022.97.80203

2100N

08/2014, Edition 5

Basic User Manual

Manuel d'utilisation de base

Manual básico del usuario

English...................................................................................................................................................................................................3

Français..............................................................................................................................................................................................20

Español...............................................................................................................................................................................................38

2

Table of contents

Specifications on page 3 Standard operation on page 9

General information on page 4 Maintenance on page 14

User interface on page 7 Troubleshooting on page 17

Startup on page 9

Specifications

Specifications are subject to change without notice.

Specification Details

Measurement method Nephelometric

Regulatory Meets EPA Method 180.1

ASTM D7315 - Standard Test Method for

Determination of Turbidity Above 1 Turbidity Unit (TU)

in Static Mode

ASTM D6655 - Standard Test Method for

Determination of Turbidity Below 5 NTU in Static

Mode

Light source Tungsten filament lamp

Measurement modes NTU, NEPH (Nephelo) and EBC

Specification Details

Range NTU (Ratio on, manual range): 0–0.999, 0–9.99,

0–99.9, 0–4000

NTU (Ratio on, auto range): 0–4000 auto decimal

NTU (Ratio off): 0–40.0

Nephelo (Ratio on, manual range): 0–9.99, 0–99.9,

0–26,800

Nephelo (Ratio on, auto range): 0–26,800 auto

decimal

Nephelo (Ratio off): 0–268

EBC (Ratio on, manual range): 0–0.999, 0–9.99,

0–99.9, 0–980

EBC (Ratio on, auto range): 0–980 auto decimal

EBC (Ratio off): 0–9.8

Accuracy

1,

2

Ratio on: ±2% of reading plus 0.01 NTU from

0–1000 NTU, ±5% of reading from 1000–4000 NTU

based on formazin primary standard

Ratio off: ±2% of reading plus 0.01 NTU from

0–40 NTU (under reference conditions

3

)

Resolution Turbidity: 0.001 NTU/EBC, Nephelo (on lowest range)

Repeatability ±1% of reading or 0.01 NTU, whichever is greater

(under reference conditions)

Response time Signal averaging off: 6.8 seconds

Signal averaging on: 14 seconds (when

10 measurements are used to calculate the average)

Stabilization time Ratio on: 30 minutes after start-up

Ratio off: 60 minutes after start-up

Reading modes Manual or auto range, signal averaging on or off,

Ratio on or off

Power requirement 115–230 VAC, 50/60 Hz (automatic power selection)

28 W maximum

English 3

Specification Details

Pollution

degree/installation

category

2; II

Protection Class 1

Operating conditions Temperature: 0 to 40 °C (32 to 104 °F)

Relative humidity: 0–90% at 25 °C, 0–75% at 40 °C,

noncondensing

Altitude: 2000 m (6560 ft) maximum

Indoor use only

Storage conditions –40 to 60 °C (–40 to 140 °F), instrument only

Interface RS232C serial interface by way of DB9 subminiature

D-shell connector for data output to computer or

printer, and data input (command). No handshaking.

Air purge Dry nitrogen or instrument grade air (ANSI MC 11.1,

1975)

0.1 scfm at 69 kPa (10 psig); 138 kPa (20 psig)

maximum

Hose barb connection for

1

/

8

-inch tubing

Sample cells Round cells 95 x 25 mm (3.74 x 1 in.) borosilicate

glass with rubber-lined screw caps

Note: Smaller sample cells (less than 25 mm) can be used

when a cell adapter is used.

Sample requirements 25 mm sample cell: 20 mL minimum

0 to 95 °C (32 to 203 °F)

Enclosure High-impact polycarbonate plastic

Dimensions 30.5 x 40 x 15.6 cm (12.0 x 15.7 x 6.1 in.)

Weight 3.4 kg (7.5 lb)

Certification CE, cETLus

1

Turbidity specifications identified using USEPA filter assembly, recently

prepared formazin standard and matched 1-inch sample cells.

2

Intermittent electromagnetic radiation of 3 volts/meter or greater may cause

slight accuracy shifts.

3

Reference conditions: 0–40 °C, 0–90% RH noncondensing at 25 °C,

115/230 VAC, 50/60 Hz

General information

In no event will the manufacturer be liable for direct, indirect, special,

incidental or consequential damages resulting from any defect or

omission in this manual. The manufacturer reserves the right to make

changes in this manual and the products it describes at any time, without

notice or obligation. Revised editions are found on the manufacturer’s

website.

Additional information

Additional information is available on the manufacturer's website.

Safety information

N O T I C E

The manufacturer is not responsible for any damages due to misapplication or

misuse of this product including, without limitation, direct, incidental and

consequential damages, and disclaims such damages to the full extent permitted

under applicable law. The user is solely responsible to identify critical application

risks and install appropriate mechanisms to protect processes during a possible

equipment malfunction.

Please read this entire manual before unpacking, setting up or operating

this equipment. Pay attention to all danger and caution statements.

Failure to do so could result in serious injury to the operator or damage

to the equipment.

Make sure that the protection provided by this equipment is not impaired.

Do not use or install this equipment in any manner other than that

specified in this manual.

Use of hazard information

D A N G E R

Indicates a potentially or imminently hazardous situation which, if not avoided, will

result in death or serious injury.

4 English

W A R N I N G

Indicates a potentially or imminently hazardous situation which, if not avoided,

could result in death or serious injury.

C A U T I O N

Indicates a potentially hazardous situation that may result in minor or moderate

injury.

N O T I C E

Indicates a situation which, if not avoided, may cause damage to the instrument.

Information that requires special emphasis.

Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or

damage to the instrument could occur if not observed. A symbol, if noted

on the instrument, will be included with a danger or caution statement in

the manual.

This symbol, if noted on the instrument, references the instruction

manual for operation and/or safety information.

Electrical equipment marked with this symbol may not be disposed of

in European public disposal systems after 12 August of 2005. In

conformity with European local and national regulations (EU Directive

2002/96/EC), European electrical equipment users must now return

old or end-of-life equipment to the Producer for disposal at no charge

to the user.

Note: For return for recycling, please contact the equipment producer or supplier

for instructions on how to return end-of-life equipment, producer-supplied

electrical accessories, and all auxiliary items for proper disposal.

Certification

Canadian Radio Interference-Causing Equipment Regulation,

IECS-003, Class A:

Supporting test records reside with the manufacturer.

This Class A digital apparatus meets all requirements of the Canadian

Interference-Causing Equipment Regulations.

Cet appareil numèrique de la classe A respecte toutes les exigences du

Rëglement sur le matériel brouilleur du Canada.

FCC Part 15, Class "A" Limits

Supporting test records reside with the manufacturer. The device

complies with Part 15 of the FCC Rules. Operation is subject to the

following conditions:

1. The equipment may not cause harmful interference.

2. The equipment must accept any interference received, including

interference that may cause undesired operation.

Changes or modifications to this equipment not expressly approved by

the party responsible for compliance could void the user's authority to

operate the equipment. This equipment has been tested and found to

comply with the limits for a Class A digital device, pursuant to Part 15 of

the FCC rules. These limits are designed to provide reasonable

protection against harmful interference when the equipment is operated

in a commercial environment. This equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in

accordance with the instruction manual, may cause harmful interference

to radio communications. Operation of this equipment in a residential

area is likely to cause harmful interference, in which case the user will be

required to correct the interference at their expense. The following

techniques can be used to reduce interference problems:

1. Disconnect the equipment from its power source to verify that it is or

is not the source of the interference.

2. If the equipment is connected to the same outlet as the device

experiencing interference, connect the equipment to a different

outlet.

3. Move the equipment away from the device receiving the interference.

4. Reposition the receiving antenna for the device receiving the

interference.

5. Try combinations of the above.

Product overview

The 2100N laboratory turbidimeter measures turbidity in NTUs

(nephelometric turbidity units), NEPs (nephelos) and EBCs (European

Brewing Convention units). NEPs and EBCs are calculated using the

English

5

conversion factors of 6.7 nephelos per 1.0 NTU and 0.245 EBCs per

1.0 NTU.

The turbidimeter has an RS232 output for connection to a printer, data

logger or computer.

Figure 1 Front overview

1 Keypad 4 Cover for the sample cell

compartment

2 Sample cell holder 5 Five-digit LED display

3 Light shield

Figure 2 Back overview

1 Power cord connector 4 DB9 connector for RS232 cable

2 Fuse holder 5 Air purge fitting

3 Power switch 6 Lamp access cover

Product components

Refer to Figure 3 to make sure that all components have been received.

If any of these items are missing or damaged, contact the manufacturer

or a sales representative immediately.

6 English

Figure 3 Instrument components

1 2100N turbidimeter 6 StablCal

®

Calibration kit

2 USEPA filter assembly 7 Gelex

®

secondary turbidity

standardization kit

1

3 Oiling cloth 8 Dust cover

4 Six 1" sample cells (30 mL) with

caps

9 Power cord

5 Silicone oil

1

Supplied with 4700000 only.

User interface

Figure 4 Keypad

1 ENTER key 5 RATIO key

2 EDIT (arrow) keys 6 SIGNAL AVG key

3 RANGE key 7 PRINT key

4 UNITS/Exit key 8 CAL key

Table 1 Key descriptions

Key Description

Enters the value on the display. Starts the measurement of a

calibration standard. Clears data from the buffer.

Changes the numbers and/or letters on the display. Steps through

the calibration standards. The right arrow key moves the cursor to

the previous or next digit.

Selects automatic or manual ranging.

Selects the unit of measure. Exits Calibration without saving

changes.

English 7

Table 1 Key descriptions (continued)

Key Description

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. Sends diagnostic results to a printer or computer

if held down when the instrument is turned on. Provides a print of

the setup commands when in Setup mode.

Starts or completes a calibration.

Figure 5 Indicator lights

1 NEPH light 6 Auto Range light

2 EBC light 7 CAL? light

3 NTU light 8 RATIO light

4 Lamp light 9 SIGNAL AVG light

5 Manual Range light 10 S0–S4 lights

Table 2 Light descriptions

Light Description

NEPH Illuminated when the instrument is set for NEPH (nephelo) unit of

measure.

EBC Illuminated when the instrument is set for EBC unit of measure.

NTU Illuminated when the instrument is set for NTU unit of measure.

8 English

Table 2 Light descriptions (continued)

Light Description

Illuminated when the instrument light source is on.

Flashes when there is not sufficient light for measurement.

Manual

Range

Illuminated when the instrument is in manual ranging mode.

Auto

Range

Illuminated when the instrument is in auto ranging mode.

CAL? Turns on during a calibration if the calibration data is not within the

acceptable range.

Flashes when the instrument should be calibrated.

Note: The CAL? light applies when the USEPA filter and a 25-mm sample cell are

used. Ignore the CAL? light if illuminated during calibration when a different filter

or a smaller sample cell is used. Push UNITS/Exit to start measurements.

RATIO Illuminated when Ratio is on.

SIGNAL

AVG

Illuminated when signal averaging is on.

S0–S4 Show the current calibration point standard that is in use during

calibration.

Startup

Turn the instrument on

1. Put the instrument on a stable, level surface that is free of vibration.

Do not put in direct sunlight.

2. Make sure that there is air circulation around the instrument. Keep

the back and area below the instrument free of material that could

decrease air flow through the vents.

3. Connect the power cord to the power plug on the back of the

instrument.

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 the

instrument on.

Turn the keypad sound off (optional)

By default, the instrument makes an audible sound when a key is

pushed. To turn the keypad sound off:

1. Push and hold down the right arrow key for 3 seconds.

2. Use the arrow keys to select 00.

3. Push ENTER.

4. Use the arrow keys to select the sound option:

Option Description

bP on An audible sound is made when a key is pushed.

bP oF No sound is made when a key is pushed.

5. Push ENTER.

Standard operation

Calibrate the turbidimeter with StablCal

®

Standards

Calibrate the turbidimeter before it is used for the first time using the

StablCal

®

sealed vial standards provided. As an alternative, calibration

can be done with recently prepared formazin standards.

Calibrate the turbidimeter at least every 3 months or as specified by the

regulating authority when data is used for USEPA reporting.

The instrument is ready for calibration 60 minutes after start-up. Keep

the instrument on 24 hours a day if the instrument is used regularly.

Note: Unknown results may occur if standards other than the recommended

calibration points are used. The recommended calibration points (< 0.1, 20, 200,

1000 and 4000 NTU) provide the best calibration accuracy. Use of standards other

than StablCal, or user-prepared formazin, may result in less accurate calibrations.

The manufacturer cannot guarantee the performance of the instrument if calibrated

with co-polymer styrenedivinylbenzene beads or other suspensions.

Prepare the StablCal standards

When received and at intervals:

English

9

1. Clean the exterior surface of the StablCal vials with laboratory glass

cleaning detergent.

2. Rinse the vials with distilled or deionized water.

3. Dry the vials with a lint-free cloth.

Note: Never shake or invert the < 0.1 NTU standard. If the standard has been

mixed or shaken, do not move the vial for 15 minutes or more before using.

Note: Do not remove the caps from the sealed vials.

Make sure that the StablCal standards are at ambient instrument

temperature before use (and no greater than 40 °C (104 °F)).

Mix the standards before use:

1. Open the case lid. Remove the < 0.1 NTU standard from the plastic

case.

2. Leave the other standards in the case. Close the case lid.

3. Shake the case vigorously for at least 10 seconds.

4. Let the standards stand with no movement for 3–5 minutes before

use.

Calibration notes

• Make sure that the instrument is in the same ambient conditions as

where it is used.

• Make sure that the standards are at the same ambient temperature as

the instrument before use.

• Use only the provided silicone oil. This silicone oil has the same

refractive index as the vial glass and masks minor glass differences

and scratches.

• 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 and

the last calibration data is used. To exit a calibration and not save the

new values, push UNITS/Exit.

• In Calibration mode, automatic range and signal averaging on are

selected. When calibration is completed, all operational modes go

back to the last settings.

• All nephelometric (turbidity units of measure) calibrations are done at

the same time.

• Ratio-on and Ratio-off calibration data is measured and recorded at

the same time.

• Clean the USEPA filter assembly before doing a primary calibration,

or at least every 3 months (which is the USEPA-recommended

primary calibration interval).

10 English

StablCal calibration procedure

1. Remove the filter

assembly. Refer to

Change the filter

assembly on page 15.

2. Clean the lens of the

USEPA filter assembly.

Refer to Clean the filter

assembly on page 15.

3. Hold the tab of the

USEPA filter assembly

so that the arrows point

toward the front of the

instrument. Push the

filter assembly fully in

the housing.

4. Push CAL.

The S0 light turns on.

The NTU value of the

dilution water used in

the last calibration is

shown on the display.

5. Get the < 0.1 NTU

vial. Clean the vial with

a soft, lint-free cloth to

remove water spots and

fingerprints. Do not

invert the vial.

6. Apply a small bead

of silicone oil from the

top to the bottom of the

vial.

7. Use the oiling cloth

to apply the oil equally

to the surface of the

vial. Remove the

excess oil. Make sure

that the vial is almost

dry.

8. Put the vial in the

sample cell holder with

the triangle on the vial

aligned with the

reference mark on the

sample cell holder.

Close the cover.

9. Push ENTER.

The instrument display

counts down, then

measures the standard.

The next expected

standard (e.g., 20.00) is

shown. The S1 light

turns on.

10. Remove the vial

from the sample cell

holder.

11. Do steps 5–10 for

the other StablCal vials

(from lowest to highest

NTU standard).

The S0 light turns on

after the last vial is

measured.

12. Push CAL.

The instrument saves

the new calibration data

and goes back to

Measurement mode.

English 11

StablCal standards storage

• Do not move a StablCal standard to a different container for storage.

Keep StablCal standards in the plastic case provided with the cover

closed.

• Store at 5 to 25 °C (41 to 77 °F).

• For long-term storage (more than one month between use), keep at

5 °C (41 °F).

Turbidity measurement

W A R N I N G

Potential explosion and fire hazard. This instrument is for measuring water based

samples. Do not measure solvent or combustible based samples.

For accurate turbidity readings use clean sample cells and remove air

bubbles.

Measurement notes

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.

• The USEPA filter assembly is required for turbidity measurements

reported for United States Environmental Protection Agency (USEPA),

National Primary Drinking Water Regulations (NPDWR) or National

Pollutant Discharge Elimination System (NPDES) permits.

• Turn the instrument on 30 minutes (Ratio on) or 60 minutes (Ratio off)

before measurement. Keep the instrument on 24 hours a day if the

instrument is used regularly.

• Always close the sample compartment lid during measurement,

calibration and storage.

• Remove the sample cell from the instrument and turn off the

instrument if the instrument is stored for an extended time period

(more than a month).

• Keep the sample compartment lid closed to keep dust and dirt out.

Sample cells

• Always cap the sample cell to prevent spillage of the sample into the

instrument.

• Always use clean sample cells in good condition. Dirty, scratched or

damaged cells can result in readings that are not accurate.

• Make sure that cold samples do not “fog” the sample cell.

• Store sample cells filled with distilled or deionized water and cap

tightly.

• For the best accuracy, use a single sample cell for every

measurement or a flow cell.

Note: As an alternative, matched sample cells may be used for measurements but

do not provide as good of accuracy or precision as a single indexed sample cell or

flow cell. When using matched sample cells, align the orientation mark on the

sample cell with the reference mark on the sample cell holder.

Measurement

• Measure samples immediately to prevent temperature changes and

settling. Before a measurement is taken, always make sure that the

sample is homogeneous throughout.

• Avoid sample dilution when possible.

• Avoid instrument operation in direct sunlight.

12 English

Turbidity measurement procedure

1. Rinse a clean,

empty sample cell two

times with the solution

to be measured and

drain to waste. Fill to

the line (about 30 mL)

with sample and

immediately put the cap

on the sample cell.

2. Clean the sample

cells with a soft, lint-free

cloth to remove water

spots and fingerprints.

3. Apply a small bead

of silicone oil from the

top to the bottom of the

sample cells.

4. Use the oiling cloth

provided to apply the oil

equally to the surface of

the sample cells.

Remove the excess oil.

Make sure that the

sample cells are almost

dry.

5. Gently and slowly

invert the sample cell to

fully mix the sample. Be

careful not to add air

bubbles.

6. Put the sample cell

in the sample cell

holder with the triangle

on the sample cell

aligned with the

reference mark on the

sample cell holder.

Close the cover.

7. Read and record the

value when stable.

Note: To send (via

RS232) a measurement

record, push PRINT.

Measurement techniques

Measurements may be made with different operation mode settings and

optional accessories.

Calibrate the instrument whenever the sample cell pathlength is

changed.

English 13

Manual or automatic ranging

The manufacturer recommends that ranging be set to automatic for most

measurements.

The setting can be changed at any time during sample measurement.

Push RANGE repeatedly to step the instrument from automatic ranging

to manual ranging and then scroll through the manual range settings.

The Manual Range light turns on when manual ranging is selected. The

Auto Range light turns on when automatic ranging is selected.

Notes:

• When manual ranging is selected, the display flashes all 9s when the

sample being measured is greater than the selected range. The

display flashes all 0s when the sample measured is less than the

selected range.

• When automatic ranging is selected, the display flashes 9s when the

sample is greater than the maximum range of the instrument. The

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

the range.

• When automatic ranging is selected, the display flashes all 0s when

the measurement is less than the range of the instrument or a

negative value. Calibrate the instrument.

Signal averaging on or off

Signal averaging corrects for reading fluctuations that are caused by

random drifting particles in the sample. When signal averaging is on, an

average reading is calculated every 3 seconds and shown on the

display.The last ten measurements are used to calculate the average

reading.

The manufacturer recommends that signal averaging be on for most

measurements.

Push SIGNAL AVG to turn signal averaging on or off. The SIGNAL AVG

light turns on when signal averaging is on.

Push ENTER when signal averaging is on to erase data in the signal

averaging buffer and provide an immediate update on the display as

necessary. This is especially useful when measuring samples with large

differences in turbidity.

Ratio on or off

Ratio on provides very good linearity, calibration stability and a wide

measurement range. Ratio on helps correct for interference when color

is present in the sample that absorbs at the wavelength of incident light.

The manufacturer recommends that Ratio on be used for most

measurements. Ratio must be on to measure samples greater than

40 NTUs (268 nephelos or 9.8 EBCs).

Push RATIO to turn Ratio on or off. The Ratio light is on when Ratio is

on.

Notes:

• If the sample being measured is greater than 40 NTU (or equivalent)

and Ratio is off, the display will show 9s and the RATIO light will flash.

Push RATIO to turn Ratio on and remove the over-range condition.

• Measurements with Ratio on and measurements with Ratio off are

almost the same for turbidity measurements that are less than 40 NTU

if interferences caused by color or light absorbing particles are not

present.

Maintenance

D A N G E R

Multiple hazards. Only qualified personnel must conduct the tasks

described in this section of the document.

Clean the instrument

Keep the instrument clean to get continuous and accurate operation.

N O T I C E

Never use cleaning agents such as turpentine, acetone or similar products to

clean the instrument including the keypad.

1. Turn the instrument off and disconnect the power cord.

2. Clean the surface of the instrument with a soft, moist cloth and a

weak soap solution.

3. Dry the surface of the instrument with a lint-free cloth.

14

English

Change the filter assembly

N O T I C E

The filter assembly is fragile and must be handled with care to prevent damage.

1. Hold the tab of the filter assembly and pull straight up and out of the

instrument.

2. Store the filter assembly in a clean container.

3. Before installation, clean the lens of the filter assembly. Refer to

Clean the filter assembly on page 15.

4. Hold the tab of the filter assembly with the arrows pointing toward the

front of the instrument.

5. Push the filter assembly fully into the housing.

Clean the filter assembly

Note: Be careful not to push the lens out of the filter assembly.

1. Clean both sides of the lens of the filter assembly with glass cleaner,

lens cleaner or isopropyl alcohol, and a cotton-tipped swab or lens

tissue.

2. Inspect the filter glass for scratches or other damage.

3. If a cloudy circle is seen around the edge of the filter, the filter

material is delaminating. Replace the filter assembly.

Replace the lamp

C A U T I O N

Wear protective eye wear when the lamp is turned on and the lamp cover is

removed.

C A U T I O N

Burn hazard. The lamp must be cool before removal from the instrument.

Notes:

• Replace the lamp with the same size, style and electrical rating

(4708900).

• Do not touch the lamp as oil from skin will damage the lamp. Clean

the lamp with alcohol as necessary.

• Either lamp lead can be put in either terminal block position.

• Turn the instrument on 30 minutes (Ratio on) or 60 minutes (Ratio off)

before measurement or calibration.

• Calibrate the instrument after the lamp is replaced.

To remove the lamp, refer to the illustrated steps.

To install the lamp, do the illustrated steps in the opposite direction.

English 15

1

16 English

Replace a fuse

D 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, 250 V, 1.6 A (3030700), or

• Fuse for 230 V operation, time-delay, 250 V, 1.6 A (3030600)

To replace a fuse, refer to the illustrated steps in Figure 6.

Figure 6 Replace a fuse

Troubleshooting

Refer to the tables in this section for error codes, diagnostic codes,

common problem messages or symptoms, possible causes and

corrective actions.

Error codes

Table 3 lists the error codes shown for different conditions. Error codes

identify instrument malfunction or operator error.

The instrument continues operation in an error condition.

Push ENTER to clear an error code from the display.

Note: Any calibration being calculated when an error occurs, is discarded. The old

calibration is kept.

Table 3 Error codes

Error Description Solution

ERR01 The turbidity of the

dilution water is

greater than 0.5 NTU.

Start the calibration again with lower turbidity

dilution water.

Note: Ignore ERR01 when the sample cell diameter is

less than 25 mm. Push UNITS/Exit to go back to

measurement mode.

ERR02

• Two calibration

standards have the

same value.

• The difference

between two

calibration

standards is less

than 60.0 NTU.

• The turbidity of

Standard 1 is too

low (less than

10 NTU).

1. Inspect the preparation of standards.

2. Do the calibration again.

Note: Ignore ERR02 when the sample cell diameter is

less than 25 mm. Push UNITS/Exit to go back to

measurement mode.

English 17

Table 3 Error codes (continued)

Error Description Solution

ERR03 Low light error

1. Put the sample in the instrument again.

2. Make sure that the lamp light is on.

3. Make sure that an object is not in the light

path.

4. Do sample dilution if necessary.

Note: If this error occurs when a filter assembly other

than the USEPA filter assembly is installed, the filter

assembly should not be used for turbidity

measurements.

ERR04 Memory malfunction

1. Turn the instrument off and then back on.

2. Contact Technical Support if the error

occurs again.

ERR05 A/D is over the range

1. Make sure that the light shield is closed.

2. Contact Customer Service if necessary.

ERR06 A/D is under the range

1. Make sure that no object is in the light

path.

2. Contact Customer Service if necessary.

ERR07 Light leak

1. Make sure that the cover for the sample

cell compartment is closed.

2. Turn the instrument off and then back on.

ERR09 Printer time out error

1. Make sure that the external printer is

connected correctly.

2. Make sure that the external printer is

selected (online).

Table 3 Error codes (continued)

Error Description Solution

ERR10 System voltage out of

range

1. Turn the instrument off and then back on.

2. Contact Customer Service if the error

occurs again.

ERR11 System loop test error

1. Turn the instrument off and then back on.

2. Contact Customer Service if the error

occurs again.

Diagnostic codes

Table 4 lists the diagnostic codes that are used to get information about

instrument operation when instrument operation is in doubt.

To do a diagnostic test:

1. Push and hold down the right arrow key for 3 seconds.

2. Use the arrow keys to enter a diagnostic code.

3. Push ENTER to show the diagnostic value.

4. Push UNITS/Exit to go back to Measurement mode.

Note: To print a diagnostic report, hold down PRINT, then turn the instrument on.

Table 4 Diagnostic codes

Code Display Description

21 Pr In Printer test

22 Test results are shown. Display test

23 Test results are shown. Keyboard test

24 Test results are shown. Memory test

Delete calibration data

To delete any calibration data entered by the user:

18

English

1. Turn off the instrument.

2. Push and hold CAL.

3. Turn on the instrument.

The CAL? light flashes. The instrument starts in Calibration mode.

4. Calibrate the instrument before use.

Flashing 9s

When manual ranging is selected, the display will flash all 9s when the

sample being measured is greater than the selected range.

When automatic ranging is selected, the display will flash 9s when the

sample is greater than the maximum range of the instrument. The

display will also flash 9s if Ratio is off and the measurement is greater

than 40 NTUs (268 nephelos or 9.8 EBCs). Turn Ratio on.

Flashing 0s

When manual ranging is selected, the display will flash all 0s when the

sample measured is less than the selected range.

When automatic ranging is selected, the display will flash all 0s when the

measurement is less than the range of the instrument or a negative

value. Calibrate the instrument.

English 19

Table des matières

Caractéristiques à la page 20 Fonctionnement standard

à la page 26

Généralités à la page 21 Maintenance à la page 32

Interface utilisateur à la page 24 Dépannage à la page 35

Mise en marche à la page 26

Caractéristiques

Les caractéristiques techniques peuvent être modifiées sans préavis.

Caractéristique Détails

Méthode de mesure Néphélométrique

Réglementation Conforme à la méthode E.P.A. 180.1

ASTM D7315 - Méthode de test standard pour

déterminer la turbidité au-dessus d'une unité de

turbidité (TU) en mode statique

ASTM D6655 - Méthode de test standard pour

déterminer la turbidité en-dessous de 5 NTU en mode

statique

Source de lumière Lampe à filament de tungstène

Modes de mesure NTU, NEPH (Néphélo) et EBC

Caractéristique Détails

Plage de mesures NTU (rapport activé, plage manuelle) : 0–0.999,

0–9,99, 0–99,9, 0–4000

NTU (rapport activé, plage auto) : 0–4 000 décimale

auto

NTU (rapport désactivé) : 0–40,0

Néphélo (rapport activé, plage manuelle) : 0–9,99,

0–99,9, 0–26 800

Néphélo (rapport activé, plage auto) :

0–26 800 décimale auto

Néphélo (rapport désactivé) : 0–268

EBC (rapport activé, plage manuelle) : 0–0.999,

0–9,99, 0–99,9, 0–980

EBC (rapport activé, plage auto) : 0–980 décimale

auto

EBC (rapport désactivé) : 0–9,8

Précision

1,

2

Rapport activé : ±2 % du relevé plus 0,01 NTU de 0 à

1 000 NTU, ±5 % du relevé de 1 000 à 4 000 NTU en

fonction de l'étalon principal de formazine

Rapport désactivé : ±2 % du relevé plus 0,01 NTU de

0 à 40 NTU (dans les conditions de référence

3

)

Résolution Turbidité : 0,001 NTU/EBC, Néphélo (sur la plage la

plus basse)

Répétabilité ±1 % du relevé ou 0,01 NTU, selon l'écart le plus

important (dans les conditions de référence)

Temps de réponse Moyenne pondérée du signal désactivée :

6,8 secondes

Moyenne pondérée du signal activée : 14 secondes

(lorsque 10 mesures sont utilisées pour calculer la

moyenne)

Temps de stabilisation Rapport activé : 30 minutes après le démarrage

Rapport désactivé : 60 minutes après le démarrage

Modes de mesure Plage manuelle ou auto, moyenne pondérée du signal

activée ou désactivée, rapport activé ou désactivé

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