LaMotte SMART 3 Electronic Soil Lab User Manual

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SMART

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Operator’s Manual

SOIL

Code 1985-04

v2.3• Printed 4.08

61985-04

T ABLE OF CONTENTS

GENERAL INFORMATION

Packaging & Delivery ····································································5 General Precautions ······································································ 5 Safety Precautions ········································································· 5 Limits of Liability ···········································································5 Specifications ·················································································6 Statistical And Technical Definitions

Related To Product Specifications·················································· 7 Contents and Accessories·······························································8 CE Compliance ··············································································9

CHEMICAL TESTING

An Introduction to Colorimetric Analysis ···································· 10 Reagent Blank ···············································································11 Colorimeter Tubes ·········································································11 Meter Care ·····················································································11 Sample Dilution Techniques & Volumetric Measurements ·········· 12 Interferences ··················································································12

OPERATION OF THE SMART 2 COLORIMETER

Overview ·······················································································14 Power Source ··················································································14 Components ·················································································· 15 Quick Start ····················································································16

GENERAL OPERATING PROCEDURES

The Keypad ···················································································18 The Display & the Menus ····························································· 19 Looping Menus···············································································21

TESTING

Testing Menu ·················································································22 Sequences of Tests ·········································································23 General Testing Procedures ···························································24 Testing With the LaMotte Pre-Programmed Tests ························ 25

EDITING MENU

Edit a Sequence ············································································· 26 Adding or Deleting Tests ·······························································27 Creating a Soil Test Sequence ························································ 30 Calibrating LaMotte Pre-Programmed Tests·································· 34 Setting the Clock············································································37 Turning the Data Logger On and Off············································· 38 Factory Setup ·················································································· 39 Setting the Power Saver Function··················································39

SMART2 SOIL MANUAL 1/07 3

T ABLE OF CONTENTS (cont.)

PC LINK

Output····························································································40 Computer Connection ···································································40

BATTERY OPERATION

Replacing the Battery ·····································································40

MAINTENANCE

Cleaning ························································································41 Meter Care ·····················································································41 Meter Disposal················································································41

TROUBLESHOOTING GUIDE

Error Messages················································································42 Calibration······················································································42 Helpful Hints··················································································43

WARRANTY

Limitations······················································································43

SMART2REAGENTSYSTEMS

Reagent Systems List ······································································ 44

SOIL TEST INSTRUCTIONS

Electronic Test Methods

pH····························································································47 Lime Requirement - Woodruff Method··································· 47 Soluble Salts (Total Dissolved Salts) ······································· 49

Extraction Procedures

Multiple Test Procedure··························································· 49 Single Test Procedure·······························································49

Neutralization of Soil Extract ·················································· 50 Ammonia-Nitrogen········································································51 Calcium & Magnesium ··································································53 Chloride··························································································57 Copper····························································································59 Iron·································································································61 Manganese······················································································63 Nitrate-Nitrogen ············································································65 Nitrite-Nitrogen ············································································· 69 Phosphorus·····················································································71 Potassium························································································75 Sulfur······························································································77 Zinc·································································································79

4 SMART2 SOIL MANUAL 1.07

GENERAL INFORMATION

PACKAGING & DELIVERY

Experienced packaging personnel at LaMotte Company assure adequate

protection against normal hazards encountered in transportation of shipments.

After the product leaves the manufacturer, all responsibility for its safe delivery

is assured by the transportation company. Damage claims must be filed

immediately with the transportation company to receive compensation for

damaged goods.

Should it be necessary to return the instrument for repair or servicing, pack

instrument carefully in suitable container with adequate packing material. A

return authorization number must be obtained from LaMotte Company by

calling 1-800-344-3100. Attach a letter with the authorization number to the

shipping carton which describes the kind of trouble experienced. This valuable

information will enable the service department to make the required repairs

more efficiently.

GENERAL PRECAUTIONS

Before attempting to set up or operate this instrument it is important to read

the instruction manual. Failure to do so could result in personal injury or

damage to the equipment.

The SMART 2 Colorimeter should not be stored or used in a wet or corrosive

environment. Care should be taken to prevent water or reagent chemicals from

wet colorimeter tubes from entering the colorimeter chamber.

NEVER PUT WET TUBES IN COLORIMETER.

SAFETY PRECAUTIONS

Read labels on all reagent containers. Some labels include precautionary

notices and first aid information. Certain reagents are considered hazardous

and are designated with a * in the instruction manual. To view or print a

Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or our

web site. To obtain a printed copy, contact us by e-mail, phone or FAX.

Additional information for all LaMotte reagents is available in the United

States, Canada, Puerto Rico, and the US Virgin Islands from Chem-Tel by

calling 1-800-255-3924. For other areas, call 813-248-0585 collect to contact

Chem-Tel’s International access number. Each reagent can be identified by the

four digit number listed on the upper left corner of the reagent label, in the

contents list and in the test procedures.

Keep equipment and reagent chemicals out of the reach of young children.

Protect Yourself and Equipment: Use Proper Analytical Techniques

LIMITS OF LIABILITY

Under no circumstances shall LaMotte Company be liable for loss of life,

property, profits, or other damages incurred through the use or misuse of its

products.

SMART2 SOIL MANUAL 1.07 5

SPECIFICATIONS

INSTRUMENT TYPE: Colorimeter

Readout Graphical 4 line, 16 character per line LCD

Wavelengths 430nm, 520 nm, 570 nm, 620 nm

Wavelength Accuracy ±2nm

Readable Resolution Determined by reagent system

Wavelength Bandwidth 10 nm typical

Photometric Range -2to+2A

Photometric Precision ± 0.001A

Sample Chamber Accepts 25 mm diameter flat-bottomed test tubes

Light Sources 4 LEDs

Detectors 4 silicon photodiodes with integrated interference

filters

Modes Absorbance, pre-programmed tests

Pre-Programmed Tests YES, with automatic wavelength selection

RS232 Port 8 pin mini-DIN, 9600b, 8, 1, n

Power Requirements Battery Operation: 9voltalkaline

Line Operation: 110/220V AC;

50/60 Hz with adapter, 6V 500 mA DC

Dimensions (LxWxH) 8.5 x 16.2 x 16.7 cm, 3.4 x 6.4 x 2.6 inches

Weight 312 g, 11 oz (meter only)

Data Logger 350 test results stored for download to a PC

6 SMART2 SOIL MANUAL 1.07

STATISTICAL AND TECHNICAL DEFINITIONS RELATED

TO PRODUCT SPECIFICATIONS

Method Detection Limit (MDL): “The method detection limit (MDL) is

defined as the minimum concentration of a substance that can be measured

and reported with 99% confidence that the analyte concentration is greater

than zero and is determined from analysis of a sample in a given matrix

containing the analyte.”

almost all cases when dealing with a limit of detection or limit of

determination, the primary purpose of determining that limit is to stay away

from it.’”

1. CFR 40, part 136, appendix B

2. Statistics in Analytical Chemistry: Part 7 – A Review, D. Coleman and L Vanatta, American Laboratory, Sept 2003, P. 31.

Precision: Precision is the numerical agreement between two or more measurements.

The precision can be reported as a range for a measurement (difference between the min and max). It can also be reported as the standard deviation or the relative standard deviation. It is a measure of how close together the measurements are, not how close they are to the correct or true value. The precision can be very good and the accuracy very bad. This is a useful

measure of the performance of a test method.

3. Skoog, D.A., W e st, D. M., Fundamental of Analytical Chemistry, 2

Holt Rinehart and Winston, Inc, 1969, p. 26.

Accuracy: Accuracy is the nearness of a measurement to the accepted or true

value.

The accuracy can be expressed as a range, about the true value, in which a measurement occurs (i.e. ±0.5 ppm). It can also be expressed as the % recovery of a know amount of analyte in a determination of the analyte (i.e.

103.5 %). This is a useful measure and what most customers are interested in when

they want to know about the performance of a test method.

4. Skoog D.A., West D. M., Fundamental of Analytical Chemistry, 2

Holt Rinehart and Winston, Inc, 1969, p. 26.

Resolution: Resolution is the smallest discernible difference between any two measurements that can be made. places are displayed. (i.e. 0.01). For titrations and various comparators it is the smallest interval the device is calibrated or marked to (i.e. 1 drop = 10 ppm,

0.2 ppm for a DRT, or ±half a unit difference for an octaslide or color chart). Note that the resolution many change with concentration or range. In some cases the resolution may be less than the smallest interval, if it is possible to make a reading that falls between calibration marks. This is often done with various comparators. One caveat is, that resolution has very little relationship to

accuracy or precision. The resolution will always be less than the accuracy or precision but it is not a statistical measure of how well a method of analysis works. The resolution can be very very good and the accuracy and precision can be very, very bad! This is not a useful measure of the performance of a test method.

5. Statistics in Analytical Chemistry: Part 7 – A Review, D. Coleman and

L Vanatta, American Laboratory, Sept 2003, P. 34.

Note that, “As Dr. William Horwitz once stated, ‘In

ed.,

For meters this is usually how many decimal

SMART2 SOIL MANUAL 1.07 7

Sensitivity: Sensitivity is the resolution based on how this term is used in LaMotte catalogs. This term is not listed in any of the references. Sometimes it is used for detection limit. It is a confusing term and should be avoided.

Repeatability: Repeatability is the within-run precision.

A run is a single data set, from set up to clean up. Generally, one run occurs on one day. However, for meter calibrations, a single calibration is considered a single run or data set, even though it may take 2 or 3 days.

6. Jeffery G. H., Basset J., Mendham J., Denney R. C., Vogel’s T extbook of

Quantitative Chemical Analysis, 5

ed., Longman Scientific & Technical,

1989, p. 130.

Reproducibility: Reproducibility is the between-run precision.

7. Jeffery G. H., Basset J., Mendham J., Denney R. C., Vogel’s T extbook of

Quantitative Chemical Analysis, 5

ed., Longman Scientific & Technical,

1989, p. 130.

CONTENTS AND ACCESSORIES

CONTENTS

SMART 2 Colorimeter

Test Tubes, with Caps

Sample Cell Holder , Universal

Power Supply, 110/220V

Battery Charger

SMART 2 Colorimeter Quick Start Guide

SMART 2 Soil Manual

ACCESSORIES

Small Field Carrying Case Code 1919-GCS150

Large Field Carrying Case Code 1919-BCS440

SMARTLink 2 Program & Interface Cable (3.5 disk)Code 1912-3

SMARTLink 2 Program & Interface Cable (CD) Code 1912-CD

8 SMART2 SOIL MANUAL 1.07

CE COMPLIANCE

The SMART 2 Colorimeter has earned the European CE Mark of Compliance for electromagnetic compatibility and safety.

DECLARA TION OF CONFORMITY

Standards to which Conformity Declared:

Manufacturer's Name:

Manufacturer's Address:

Type of Equipment:

Model Name:

Year of Manufacture:

Testing Performed By:

I, the undersigned, hereby declare that the equipment specified above

Chestertown, Maryland

Place

EN61326:1998, IEC61326:1997, IEC61000-4-2:1995, IEC61000-4-3:1995 IEC61000-4-4:1995, IEC61000-4-5:1995 IEC61000-4-6:1996, IEC61000-4-11:1994, EN61000-3-2:1995, EN61000-3-3:1994-12, EN55011/CISPR11, FCCCFR47 Part 15, EN61558

LaMotte Company

802 Washington Avenue PO Box 329 Chestertown, MD 21620

Colorimeter

SMART 2

2001

Windermere 2000 Windermere Court Annapolis, MD 21401

conforms to the above Directive and Standards.

Signature

1/15/02

Date

SMART2 SOIL MANUAL 1.07 9

Scott H. Steffen

Name

VP New Products & Quality

Position

CHEMICAL TESTING

AN INTRODUCTION TO COLORIMETRIC ANALYSIS

Most test substances in water or soil extract are colorless and undetectable to the human eye. T o test for their presence we must find a way to “see” them. The SMART 2 Colorimeter can be used to measure any test substance that is itself colored or can be reacted to produce a color. In fact a simple definition of colorimetry is “the measurement of color” and a colorimetric method is “any technique used to evaluate an unknown color in reference to known colors”. In a colorimetric chemical test the intensity of the color from the reaction must be proportional to the concentration of the substance being tested. Some reactions have limitations or variances inherent to them that may give misleading results. Many such interferences are discussed with each particular test instruction. In the most basic colorimetric method the reacted test sample is visually compared to a known color standard. However, accurate and reproducible results are limited by the eyesight of the analyst, inconsistencies in the light sources, and the fading of color standards.

To avoid these sources of error, a colorimeter can be used to photoelectrically measure the amount of colored light absorbed by a colored sample in reference to a colorless sample (blank).

White light is made up of many different colors or wavelengths of light. A colored sample typically absorbs only one color or one band of wavelengths from the white light. Only a small difference would be measured between white light before it passes through a colored sample versus after it passes through a colored sample. The reason for this is that the one color absorbed by the sample is only a small portion of the total amount of light passing through the sample. However, if we could select only that one color or band of wavelengths of light to which the test sample is most sensitive, we would see a large difference between the light before it passes through the sample and after it passes through the sample.

The SMART 2 Colorimeter passes one of four colored light beams through one of four optical filters which transmits only one particular color or band of wavelengths of light to the photodectector where it is measured. The difference in the amount of colored light transmitted by a colored sample is a measurement of the amount of colored light absorbed by the sample. In most colorimetric tests the amount of colored light absorbed is directly proportional to the concentration of the test factor producing the color and the path length through the sample. However, for some tests the amount of colored light absorbed is inversely proportional to the concentration.

The choice of the correct wavelength for testing is important. It is interesting to note that the wavelength that gives the most sensitivity (lower detection limit) for a test factor is the complementary color of the test sample. For example the Nitrate-Nitrogen test produces a pink color proportional to the nitrate concentration in the sample (the greater the nitrate concentration, the darker the pink color). A wavelength in the green region should be selected to analyze this sample since a pinkish-red solution absorbs mostly green light.

10 SMART2 SOIL MANUAL 1.07

REAGENT BLANK

Some tests will provide greater accuracy if a reagent blank is determined to compensate for any color or turbidity resulting from the reagents themselves. A reagent blank is performed by running the test procedure on 10 mL of demineralized water. Use sample water to SCAN BLANK. Insert the reagent blank in the colorimeter chamber and select SCAN SAMPLE.Noteresultof reagent blank. Perform the tests on the sample water as described. Subtract results of reagent blank from all subsequent test results. NOTE: Some tests require a reagent blank to be used to SCAN BLANK.

COLORIMETER TUBES

Colorimeter tubes which have been scratched through excessive use should be discarded and replaced with new ones. Dirty tubes should be cleaned on both the inside and outside. Fingerprints on the exterior of the tubes can cause excessive light scattering and result in errors. Handle the tubes carefully, making sure the bottom half of the tube is not handled.

LaMotte Company makes every effort to provide high quality colorimeter tubes. However, wall thicknesses and diameter of tubes may still vary slightly. This may lead to slight variations in results (e.g. if a tube is turned while in the sample chamber, the reading will likely change slightly). To eliminate this error put the tubes into the sample chamber with the same orientation every time.

The tubes that are included with the colorimeter have an index mark to facilitate this. If possible, use the same tube to SCAN BLANK and SCAN SAMPLE.

METER CARE

The optical system of the SMART2 must be kept clean and dry for optimal performance. Dry the colorimeter tubes before placing them in the chamber to avoid introducing moisture. For best results store the instrument in an area that is dry and free from aggressive chemical vapors.

SMART2 SOIL MANUAL 1.07 11

SAMPLE DILUTION TECHNIQUES

& VOLUMETRIC MEASUREMENTS

If a test result using the SMART 2 Colorimeter gives an OVERRANGE message then the sample concentration could be over range or under range. If it is over range, the sample must be diluted. Then the test should be repeated on the diluted sample to obtain a reading which is in the concentration range for the test. (Note: This is not true for colorimetric determination of pH.)

Example:

Measure 5 mL of the water sample into a graduated cylinder. Add demineralized water until the cylinder is filled to the 10 mL line. The sample has been diluted by one-half, and the dilution factor is therefore 2. Perform the test procedure, then multiply the resulting concentration by 2 to obtain the test result.

The following table gives quick reference guidelines on dilutions of various proportions. All dilutions are based on a 10 mL volume, so several dilutions will require small volumes of the water sample. Graduated pipets should be used for all dilutions.

Size of Sample

10 mL 0 mL 1

5mL 5mL 2

2.5 mL 7.5 mL 4 1mL 9mL 10

0.5 mL 9.5 mL 20

Deionized Water to Bring

Volume to 10 mL Multiplication Factor

If the above glassware is not available, dilutions can be made with the colorimeter tube. Fill the tube to the 10 mL line with the sample then transfer it to another container. Add 10 mL volumes of demineralized water to the container and mix. T r ansfer back 10 mL of the diluted sample to the tube and follow the test procedure. Continue diluting and testing until a reading, which is in the concentration range for the test, is obtained. Be sure to multiply the concentration found by the dilution factor (the number of total 10 mL volumes used).

Example:

10 mL of sample is diluted with three 10 mL volumes of demineralized water; the dilution factor is four.

INTERFERENCES

LaMotte reagent systems are designed to minimize most common interferences. Each individual test instruction discusses interferences unique to that test. Be aware of possible interferences in the soil extract being tested.

The reagent systems also contain buffers to adjust the soil extract to the ideal pH for the reaction. It is possible that the buffer capacity of the soil extract may exceed the buffer capacity of the reagent system and the ideal pH will not be obtained. If this is suspected, measure the pH of a reacted distilled water

12 SMART2 SOIL MANUAL 1.07

reagent blank using a pH meter. This is the ideal pH for the test. Measure the pH of a reacted soil extract using the pH meter. If the pH is significantly different from the ideal value, the pH of the sample should be adjusted before testing.

Interferences due to high concentration of the substance being tested, can be overcome by sample dilution (see page 11).

CALIBRATION

As with all pre-calibrated meters, it is highly recommended, even if not required by regulations, that the user periodically verify the performance of the meter by running standards with a predetermined concentration. Results outside of specification are an indication that the meter needs to be adjusted. This can be done following the user calibration described on page 34. If the user calibration fails to properly adjust the meter then the meter should be returned to LaMotte Company for recalibration. (See page 5).

SMART2 SOIL MANUAL 1.07 13

OPERA TION OF THE SMART 2 COLORIMETER

OVERVIEW

The SMART 2 Colorimeter is a portable, microprocessor controlled, direct reading colorimeter. It has a graphical 4 line, 16 character liquid crystal display for graphical, alphabetical and numerical messages. The operation is controlled with the keypad through menu driven software in response to selections shown on the display.

The test library consists of 100 LaMotte tests (not all 100 may be available at present) and 10 “User Tests”. The LaMotte tests are precalibrated for LaMotte reagent systems. The colorimeter displays the results of these tests directly in units of concentration. The 10 “User Tests” may be used to enter additional calibrations. All of these tests may be arranged in any of 3 sequences. These sequences can be modified a limitless number of times to meet changing testing needs.

The optics feature 4 different colored LEDs. Each LED has a corresponding silicon photodiode with an integrated interference filter. The interference filters select a narrow band of light from the corresponding LED for the colorimetric measurements. The microprocessor automatically selects the correct LED/photodiode combination for a test.

A RS-232 serial port on the back of the colorimeter, and optional software, allows the SMAR T 2 to be interfaced with an IBM compatible personal computer for real time data acquisition and data storage. This port also allows an interface with a RS-232 serial printer.

Due to its portability, alternate power sources, and rugged construction, the SMART 2 Colorimeter is ideal for lab and field use.

POWER SOURCE

The SMART 2 Colorimeter uses a 6V 500 mA AC adapter. Please refer to the Parts List for the code number for the correct adapter.

USE OF ANY AC ADAPTER OTHER THAN THE ONE SPECIFIED FOR USE WITH THE SMART 2 COLORIMETER MAY DAMAGE THE METER AND WILL VOID THE WARRANTY. Do not use the

adapter sold with the original SMART Colorimeter.

To use the adapter, slide the connector pin from the AC adapter into the small hole on the left side of the meter. Plug the AC adapter into an appropriate wall socket or power source.

14 SMART2 SOIL MANUAL 1/07

COMPONENTS

Figure 1 shows a diagram of the SMART 2 Colorimeter and its components.

T op View

SMART2

••••••••••••••••••

ENTER

OFF EXIT

Lid

Side Views

Bottom View

Serial Number

Battery Compartment

RS232 Serial Port

AC Adapter Socket

SMART2 SOIL MANUAL 1.07 15

QUICK START

Some quick instructions to get into testing.

Press the ON buttontoturnontheSMART2.The LaMotte logo screen will appear for about 2 seconds and then the Start screen appears. Press the Q/ENTER button to start testing.

The MAIN MENU will appear. Press Q/ENTER to select TESTING MENU.

Press Q/ENTER to select All Tests.

Press t or s to move the * to the desired test.

VER 1.0

Smart 2

* Start

MAIN MENU

* Testing Menu

Editing Menu

PC Link

TESTING MENU

* All Tests

Sequence 1

Sequence 2

ALL TESTS

* 001 Alk - UDV

002 Aluminum

003 Ammonia-NLF

Press Q/ENTER to select test.

Insert blank, press Q/ENTER to scan blank.

Continued...

16 SMART2 SOIL MANUAL 1.07

ALL TESTS

* 015 Chlorine

016 Cl F-UDV

017 Cl Liq-DPD

015 Chlorine

* Scan Blank

The screen will display Blank Done for about 1 second.

015 Chlorine

Blank Done

* Scan Blank

Insert the reacted sample. Press Q/ENTER to scan sample. The SMAR T 2 will scan the sample and display the concentration.

After recording test result, scroll with t or s and make another selection with Q/ENTER.Press EXIT to escape to previous menus.

015 Chlorine

* Scan Sample

015 Chlorine

1.28 ppm

* Scan Sample

SMART2 SOIL MANUAL 1.07 17

GENERAL OPERATING PROCEDURES

The operation of the SMART 2 Colorimeter is controlled by a microprocessor. The microprocessor is programmed with menu driven software. A menu is a list of choices. This allows a selection of various tasks for the colorimeter to perform, such as, scan blank, scan sample, and edit test sequences. The keypad is used to make menu selections which are viewed in the display. There are three selections accessible from the MAIN MENU: Testing Menu, Editing Menu and PC Link.

THE KEYP AD

The keypad has 6 buttons which are used to perform specific tasks.

t This button will cause the display to scroll down through a list of

s This button will cause the display to scroll up in a list of menu

ENTER

EXIT

OFF

SAMPLE HOLDERS

The sample chamber is designed for 25 mm round tubes. Additional sample holders for 16 mm COD tubes and for 1 cm square UDV cuvettes are available for the SMAR T 2 Colorimeter.

This button is used to turn the colorimeter on.

menu choices. It will move through a list viewed in the display. It will auto scroll when held down.

choices. It will move through a list viewed in the display. It will auto scroll when held down.

This button is used to select the menu choice adjacent to the “*”in amenuviewedinthedisplay.

This button is an exit or escape button. When pressed, the display will exit from the current menu and go to the previous menu.

This button turns the colorimeter off.

18 SMART2 SOIL MANUAL 1.07

THE DISPLAY & THE MENUS

The display allows menu selections to be viewed and chosen. These choices instruct the colorimeter to perform specific tasks. The menus are viewed in the display using two general formats which are followed from one menu to the next. Each menu is a list of choices or selections.

There are four lines in the display. The top line in each menu is a title or pertinent instruction. The top line does not change unless a new menu is selected. The second and third lines are used in two ways. One way is to display menu choices. The second way takes advantage of the graphical capabilities of the display. Both lines are used to display important messages, such as test results, in a large, easy to read format. The fourth line is used for menu choices.

DISPLAY

TESTING MENU

* FIRST CHOICE

SECOND CHOICE

ANOTHER

AND ANOTHER

AND SO ON

TITLE or INSTRUCTION

MENU CHOICE WINDOW

Think of the menu choices as a vertical list in the display which moves up or down each time an arrow button is pressed. This list or menu is viewed through a window, the menu choice window, in the display. The menu choice window is the lower 2 or 3 lines of the display. Pushing the arrow buttons brings another portion of the menu into menu choice window. This is referred to as scrolling through the menu.

TESTING MENU

* FIRST CHOICE SECOND CHOICE ANOTHER

SECOND CHOICE * ANOTHER AND ANOTHER

ANOTHER AND ANOTHER * AND SO ON

AND ANOTHER AND SO ON LAST CHOICE

AND SO ON LAST CHOICE

LAST CHOICE

TESTING MENU

An asterisk, “*”, will start in the far left position of the top line in the menu choice window. As the menu is scrolled through, different choices appear next to the “*”. The “*” in the display corresponds with the Q/ENTER button. Pushing the Q/ENTER button selects the menu choice which is adjacent to the “*” in the menu choice window.

SMART2 SOIL MANUAL 1.07 19

The second general format of the display takes advantage of the graphics capabilities of the display. The top line of the display is still a title line. The middle two lines of the display are used to display important messages, results or graphics in a large, easy to read format. The menus work in the same way as described previously but only one line of the menu is visible at the bottom of the display.

TESTING MENU

Result or Message Result or Message Result or Message

* ANOTHER * AND ANOTHER *AND SO ON

AND ANOTHER AND SO ON LAST CHOICE

AND SO ON LAST CHOICE

LAST CHOICE

As described previously, the EXIT button allows an exit or escape from the current menu and a return to the previous menu. This allows a rapid exit from an inner menu to the main menu by repeatedly pushing the EXIT button. Pushing OFF at any time will turn the colorimeter off.

20 SMART2 SOIL MANUAL 1.07

LOOPING MENUS

Long menus, such as All Tests, incorporate a looping feature which allow the user to quickly reach the last choice in the menu from the first choice. In a looping menu the last choices in the menu are above the first choice and scrolling upward moves through the menu in reverse order. Scrolling downward moves through the menu from first choice to last but the menu starts over following the last choice. So all menu choices can be reached by scrolling in either direction. The diagrams below demonstrate a looping menu.

AND SO ON AND ANOTHER ANOTHER

: : : AND SO ON AND ANOTHER

: : : : : : AND SON ON

THIRD TO LAST : : : : : :

SECOND TO LAST THIRD TO LAST : : :

LAST CHOICE SECOND TO LAST THIRD TO LAST

TESTING MENU

* FIRST CHOICE * LAST CHOICE *SECOND TO LAST

SECOND CHOICE FIRST CHOICE LAST CHOICE

ANOTHER SECOND CHOICE FIRST CHOICE

AND ANOTHER ANOTHER SECOND CHOICE

AND SO ON AND ANOTHER ANOTHER

: : : AND SO ON AND ANOTHER

: : : : : : AND SO ON

LAST CHOICE : : : : : :

TESTING MENU

SMART2 SOIL MANUAL 1.07 21

TESTING

TESTING MENU

The Testing Menu is used to run all LaMotte pre-programmed tests, USER TESTS and Absorbance test at one of four wavelengths. Testing from any of

three sequences can also be done.

Press ON to turn on the SMART 2 Colorimeter. The LaMotte logo will appear for about 2 seconds and the the Start screen appears. Press Q/ENTER to begin testing.

The MAIN MENU will appear. Press Q/ENTER to select Testing Menu.

Scroll with t or s and make a selection with Q/ENTER. All Tests lists all the available tests. The three sequences have selected tests and Absorbance lists %T/ABS tests.

VER 1.0

Smart 2

* Start

MAIN MENU

* Testing Menu

Editing Menu

PC Link

TESTING MENU

* All Tests

Sequence 1

Sequence 2

Sequence 3

Absorbance

22 SMART2 SOIL MANUAL 1.07

SEQUENCES OF TESTS

SEQUENCE 1, SEQUENCE 2,andSEQUENCE 3 are alterable sequences. They may be edited using the Editing Menu. Any of the LaMotte pre-programmed tests or User Tests may be placed in these sequences in whatever testing order that is preferred. Some examples of typical sequences are given below.

SEQUENCE 1 SEQUENCE 2 SEQUENCE 3

* 015 Chlorine * 002 Aluminum * 003 Ammonia-N LF

079 Phosphate H 035 Cyanide 032 Cu-DDC

009 Bromine-LR 041 Fluoride 064 Nitrate-N L

076 pH TB 053 Iron Phen 067 Nitrite-N L

061 Moly-HR 055 Manganese L 074 pH CPR

086 Silica Hi 064 Nitrate-N L 078 Phosphate L

045 Hydrazine 067 Nitrite-N L 085 Silica Lo

032 Cu-DDC 077 Phenol

051 Iron Bipyr 078 Phosphate L

090 Sulfide-LR

These alterable sequences allow a series of tests to be setup that are run frequently. The order of the individual tests in the sequence is determined by the user. After running a test, use t to scroll to the next test and press Q/ENTER to select the next test in the sequence. Continue this pattern until the entire sequence has been completed.

All Tests is a fixed sequence containing the LaMotte pre-programmed tests, User Tests, and Absorbance tests.

Modification of the alterable sequences is accomplished through the Editing Menu. This menu is explained in greater detail in EDITING MENU (p. 25).

Pressing the EXIT button while in a sequence menu will escape back to the

Testing Menu.

Pressing the OFF button at any time will turn the colorimeter off.

SMART2 SOIL MANUAL 1.07 23

GENERAL TESTING PROCEDURES

The following are some step by step examples of how to run tests from the Testing Menu. These test procedures are designed to be used with LaMotte SMART Reagent Systems.

TESTING WITH THE LaMOTTE

PRE-PROGRAMMED TESTS

Press ON to turn on the SMART 2 Colorimeter. The LaMotte logo will appear for about 2 seconds and then the Start screen appears. Press Q/ENTER to start testing.

The MAIN MENU will appear. Press Q/ENTER to select Testing Menu.

Press Q/ENTER to select All Tests.

Press t to scroll to 002 Aluminum.

VER 1.0

Smart2

* Start

MAIN MENU

* Testing Menu

Editing Menu

PC Link

TESTING MENU

* All Tests

Sequence 1

Sequence 2

ALL TESTS

* 001 Alk - UDV

002 Aluminum

003 Ammonia-N LF

Press Q/ENTER to select 002 Aluminum.

Continued...

24 SMART2 SOIL MANUAL 1.07

ALL TESTS

* 002 Aluminum

003 Ammonia-N LF

004 Ammonia-N LS

The SMART 2 Colorimeter is ready to scan at the correct wavelength. Place the blank in the sample chamber, close the lid and press Q/ENTER to scan blank.

NOTE: Do not keep the button depressed.

002 Aluminum

* Scan Blank

The screen will display Blank Done for about 1 second. Scan Sample will be positioned next to *.

Place the reacted sample in the chamber, close the lid and press Q/ENTER to scan sample. The colorimeter will scan the sample and the results screen will appear.

Record test result. To repeat the test, press Q/ENTER to scan the sample again. The last blank scanned is used to zero the colorimeter for repeated scans. A different blank can be used by pressing s to scroll back to Scan Blank and then scanning another blank. Scroll with the t or s buttons and make another selection with the Q/ENTER button. The%TorAbsorbanceofthelasttestcanbeviewed by choosing %T/Abs.PressEXIT to escape to previous menus.

NOTE: The menus loop in this screen so either the s or t buttons will lead to the menu selection needed.

002 Aluminum

Blank Done

* Scan Blank

002 Aluminum

* Scan Sample

002 Aluminum

0.09 ppm

* Scan Blank

Next Test

Previous Test

%/Abs

Scan Blank

SMART2 SOIL MANUAL 1.07 25

EDITING MENU

The EDITING MENU allows the user to edit sequences, edit user tests, set the clock, edit the logging function, and set the power saving function.

EDIT A SEQUENCE

The EDIT SEQUENCE menu allows three alterable test sequences (SEQUENCE 1, SEQUENCE 2,andSEQUENCE 3) to be edited.

Press ON to turn on the SMART 2 Colorimeter. The LaMotte logo will appear for about 2 seconds and then the Start screen appears. Press Q/ENTER

to start testing.

The Main Menu will appear. Press t to scroll to Editing Menu.

Press Q/ENTER to select Editing Menu.

The Editing Menu appears. Press Q/ENTER to

select Editing Sequence.

VER 1.0

Smart2

*START

MAIN MENU

Testing Menu

* Editing Menu

PC Link

MAIN MENU

*Editing Menu

PC Link

EDITING MENU

* Edit Sequence

Edit User Test

Set Clock

The Edit Sequence menu appears. Press Q/ENTER to scroll to select Edit Sequence 1.

Continued...

26 SMART2 SOIL MANUAL 1.07

EDIT SEQUENCE

*Edit Sequence 1

Edit Sequence 2

Edit Sequence 3

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