Hach-Lange 2100N User Manual
DOC022.52.80203
2100N
08/2012, Edition 2
User Manual
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
Calibrate the turbidimeter with StablCal® Standards.......................................................................................................................11
Prepare the StablCal standards................................................................................................................................................11
Calibration notes.......................................................................................................................................................................11
StablCal calibration procedure..................................................................................................................................................12
StablCal standards storage......................................................................................................................................................13
Using Gelex secondary standards...................................................................................................................................................13
Gelex notes...............................................................................................................................................................................13
Measure the Gelex stray light standard....................................................................................................................................14
Measure the Gelex secondary turbidity standards...................................................................................................................15
Calibration verification..............................................................................................................................................................16
Optical system check................................................................................................................................................................16
Prepare a sample cell......................................................................................................................................................................16
Clean the sample cell...............................................................................................................................................................17
Indexing a single sample cell....................................................................................................................................................18
Matching sample cells..............................................................................................................................................................20
Prepare dilution water...............................................................................................................................................................21
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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
Turbidity measurement procedure............................................................................................................................................25
Measurement techniques.................................................................................................................................................................26
Manual or automatic ranging....................................................................................................................................................26
Signal averaging on or off.........................................................................................................................................................26
Ratio on or off...........................................................................................................................................................................27
Using the air purge system.......................................................................................................................................................27
Using a flow cell........................................................................................................................................................................28
Install a flow cell................................................................................................................................................................28
Clean a flow cell assembly................................................................................................................................................28
Flow cell maintenance.......................................................................................................................................................28
Flow cell operation.............................................................................................................................................................28
Flow cell storage................................................................................................................................................................29
Using a manual flow cell....................................................................................................................................................29
Use a cell adapter.....................................................................................................................................................................29
Install a cell adapter...........................................................................................................................................................29
Remove a cell adapter.......................................................................................................................................................30
Connect to a printer or computer.....................................................................................................................................................30
Configure the printer output.............................................................................................................................................................30
Configure the RS232 connection.....................................................................................................................................................30
Configure a Citizen Model iDP 562RSL II printer.............................................................................................................................30
Computer (RS232) commands........................................................................................................................................................31
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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
Clean the instrument........................................................................................................................................................................36
Change the filter assembly..............................................................................................................................................................36
Clean the filter assembly..................................................................................................................................................................36
Replace the lamp.............................................................................................................................................................................36
Replace a fuse.................................................................................................................................................................................38
Troubleshooting..........................................................................................................................................................................38
Error codes .....................................................................................................................................................................................38
Diagnostic codes..............................................................................................................................................................................39
Delete calibration data.....................................................................................................................................................................39
Flashing 9s.......................................................................................................................................................................................40
Flashing 0s.......................................................................................................................................................................................40
Replacement parts and accessories...............................................................................................................................40
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Table of Contents
4
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
Range NTU (Ratio on, manual range): 0–0.999, 0–9.99, 0–
Accuracy1,
Resolution Turbidity: 0.001 NTU/EBC, Nephelo (on lowest range)
2
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
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 conditions3)
Specification Details
Repeatability ±1% of reading or 0.01 NTU, whichever is greater
Response time Signal averaging off: 6.8 seconds
Stabilization time Ratio on: 30 minutes after start-up
Reading modes Manual or auto range, signal averaging on or off, Ratio
Power requirement 115–230 VAC, 50/60 Hz (automatic power selection)
Pollution
degree/installation
category
Protection Class 1
Operating conditions Temperature: 0 to 40 °C (32 to 104 °F)
Storage conditions –40 to 60 °C (–40 to 140 °F), instrument only
Interface RS232C serial interface by way of DB9 subminiature
Air purge Dry nitrogen or instrument grade air (ANSI MC 11.1,
(under reference conditions)
Signal averaging on: 14 seconds (when
10 measurements are used to calculate the average)
Ratio off: 60 minutes after start-up
on or off
28 W maximum
2; II
Relative humidity: 0–90% at 25 °C, 0–75% at 40 °C,
noncondensing
Altitude: 2000 m (6560 ft) maximum
Indoor use only
D-shell connector for data output to computer or
printer, and data input (command). No handshaking.
1975)
0.1 scfm at 69 kPa (10 psig); 138 kPa (20 psig)
maximum
Hose barb connection for 1/8-inch tubing
English 5
Specification Details
Sample cells Round cells 95 x 25 mm (3.74 x 1 in.) borosilicate
Sample requirements 25 mm sample cell: 20 mL minimum
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
glass with rubber-lined screw caps
Note: Smaller sample cells (less than 25 mm) can be used
when a cell adapter is used.
0 to 95 °C (32 to 203 °F)
Note: Refer to Use a cell adapter on page 29 for the minimum
sample size when not using a 25 mm sample cell.
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.
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.
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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.
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.
C A U T I O N
N O T I C E
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
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.
English 7
Figure 1 Front overview
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.
Figure 3 Instrument components
1 Keypad 4 Cover for the sample cell
2 Sample cell holder 5 Five-digit LED display
3 Light shield
compartment
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
8
English
1 2100N turbidimeter 6 StablCal® Calibration kit
2 USEPA filter assembly 7 Gelex® secondary turbidity
3 Oiling cloth 8 Dust cover
4 Six 1" sample cells (30 mL) with
caps
5 Silicone oil
1
Supplied with 4700000 only.
standardization kit
9 Power cord
1
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.
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.
Selects automatic or manual ranging.
Selects the unit of measure. Exits Calibration without saving
changes.
English 9
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.
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
SIGNAL
S0–S4 Show the current calibration point standard that is in use during
Illuminated when the instrument is in manual ranging mode.
Range
Auto
Illuminated when the instrument is in auto ranging mode.
Range
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.
Illuminated when signal averaging is on.
AVG
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.
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English
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. Refer to
Calibrate the turbidimeter with formazin standards on page 32.
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:
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.
English
11
• 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.
StablCal calibration procedure
• Clean the USEPA filter assembly before doing a primary calibration,
or at least every 3 months (which is the USEPA-recommended
primary calibration interval).
1. Remove the filter
assembly. Refer to
Change the filter
assembly on page 36.
12 English
2. Clean the lens of the
USEPA filter assembly.
Refer to Clean the filter
assembly on page 36.
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.
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