Pocket Colorimeter II User Manual Edition 1 April 2014

Table of Contents Section 1 Specifications ... 3 Section 2 General information ... 5 2.1 Safety information ... 5 2.1.1 Use of hazard information ... 5 2.1.2 Precautionary labels ... 6 2.1.3 Certification ... 6 2.2 Product overview ... 7 Section 3 Startup ... 9 3.1 Install the batteries ... 9 3.2 Install the cap cord ... 10 Section 4 User interface and navigation ... 11 4.1 Keypad description ... 11 4.2 Display description ... 11 Section 5 Operation ... 13 5.1 Configure the instrument ... 13 5.2 Run a test ... 13 5.3 Show the recorded measurements ... 16 5.4 Standard calibration adjust ... 17 5.4.1 Adjust the factory calibration with a standard ... 17 5.4.2 Set the standard calibration adjust to off ... 18 5.5 User-entered calibration ... 18 5.5.1 Channel restrictions ... 18 5.5.2 Enter a calibration curve with standards ... 19 5.5.3 Enter a calibration curve with the keypad ... 20 5.5.4 Remove a calibration point ... 21 5.5.5 Set to the factory default calibration ... 22 Section 6 Maintenance ... 23 6.1 Clean the instrument ... 23 6.2 Clean the sample cells ... 23 6.3 Replace the batteries ... 24 Section 7 Troubleshooting ... 25 Section 8 Replacement parts ... 27

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Table of Contents

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Section 1 Specifications Specifications are subject to change without notice. Specification

Details

Dimensions (W x D x H) 6.1 x 3.2 x 15.2 cm (2.4 x 1.25 x 6 in.) Enclosure

IP67, waterproof at 1 m (3.3 ft) for 30 minutes (battery compartment not included). Keep out of direct sunlight.

Light source

Light emitting diode (LED)

Detector

Silicon photodiode

Display

LCD with backlight

Weight

0.2 kg (0.43 lb)

Pollution degree

2

Installation category

I

Protection class

3

Power requirements

4 AAA batteries; approximate life of 2000 tests (use of backlight decreases this number) Rechargeable batteries are not recommended.

Operating environment

0 to 50 °C (32 to 122 °F), 0 to 90% relative humidity non-condensing

Storage temperature

–20 to 55 °C (–7.6 to 131 °F)

Photometric precision

± 0.0015 Abs

Wavelength

Fixed wavelength ±2 nm, different for each model

Filter bandwidth

15 nm

Absorbance range

0 to 2.5 Abs

Sample cell path length 1 cm (5–10 mL), 25 mm (10 mL) Data storage

Last 10 measurements

Certifications

CE mark

Warranty

2 years

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Specifications

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Section 2 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.

2.1

Safety information NOTICE

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.

2.1.1

Use of hazard information

DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.

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

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General information

NOTICE Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special emphasis.

2.1.2

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 on the instrument is referenced in the manual with a precautionary statement. 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 domestic or public disposal systems. Return old or end-of-life equipment to the manufacturer for disposal at no charge to the user.

2.1.3

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 numérique de classe A répond à toutes les exigences de la réglementation canadienne sur les équipements provoquant des interférences. 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. 6

General information 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. Move the equipment away from the device receiving the interference. 2. Reposition the receiving antenna for the device receiving the interference. 3. Try combinations of the above.

2.2

Product overview

This instrument is a portable filter photometer used for testing water. Refer to Figure 1. This instrument is configured at the factory to measure one or two specific parameters. This instrument is calibrated at the factory. No user calibration is necessary. Note: This instrument has not been evaluated to measure chlorine and chloramines in medical applications in the United States.

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General information Figure 1 Instrument overview

1 Instrument cap 2 Cell holder 1

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3 Cell holder with 1-cm cell adapter1 4 Display

Factory installed in some models

5 Keypad

Section 3 Startup 3.1

Install the batteries WARNING Explosion hazard. Incorrect battery installation can cause the release of explosive gases. Be sure that the batteries are of the same approved chemical type and are inserted in the correct orientation. Do not mix new and used batteries.

Install the batteries as shown in Figure 2. Figure 2 Install the batteries

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Startup

3.2

Install the cap cord

Attach the cap cord to prevent loss of the instrument cap. Refer to Figure 3. Figure 3 Install the cap cord

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Section 4 User interface and navigation 4.1

Keypad description

Figure 4 shows the keypad and gives the key functions. Figure 4 Keypad

1 Power/Backlight key: Sets the power to on and off. Push and hold for 1 second to set the backlight to on or off. 2 Zero/Scroll key: Sets the instrument to zero, scrolls through menu options and numbers

4.2

3 Menu key: Enters and goes out of menu mode.

4 Read/Enter key: Starts a sample measurement, selects a menu option, moves the cursor to the next digit

Display description

Figure 5 shows the values and icons shown on the display.

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User interface and navigation Figure 5 Display

1 Numeric display: Measured value or menu options 2 Range icon: Selected range or parameter

3 Range value: Range(s) or parameters

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4 Menu icon: The instrument is in menu mode. 5 Calibration adjusted icon: The factory default calibration was adjusted or a user-entered calibration curve was entered. Refer to the expanded user manual on the manufacturer's website. 6 Low battery icon: Battery level is 10%. Flashes when the battery level is too low to complete measurements.

Section 5 Operation 5.1

Configure the instrument

1. Push

.

2. Push to scroll through the menu options. Push option.

to select an

Option Description SEL

Sets the measurement range or parameter. Push between the measurement ranges or parameters.

00:00

Sets the time in 24-hour format (hh:mm). Push to change the time. Push to change the first digit, then to go to the next digit.

rCL

Shows the last 10 measurements recorded. Push to show the recorded measurements (01-most recent measurement, 10- oldest measurement). Push to scroll through the measurements. To select a measurement by number, push to select the number and then . Push to go out of this option.

SCA

Refer to Standard calibration adjust on page 17.

3. Push

5.2

to toggle

to go back to measurement mode.

Run a test WARNING Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets (MSDS/SDS) for safety protocols.

The basic measurement steps necessary to run a test follow. Refer to the applicable method to run a specific test. 1. Select the applicable measurement range or parameter. Refer to Configure the instrument on page 13. 2. Prepare the blank according to the method document. Make sure to use the correct sample cell size. Rinse the sample cell and cap with the blank before the sample cell is filled. 13

Operation 3. Close the sample cell and clean the optical faces of the sample cell with a lint-free cloth. 4. Insert the blank sample cell into the cell holder. Make sure to install the blank sample cell in the correct and consistent orientation so that the results are more repeatable and precise. Refer to Figure 6. 5. Install the instrument cap over the cell holder. Refer to Figure 7. 6. Push to set the instrument zero. The display shows "0.000", or the degree of resolution that was previously selected. 7. Prepare the sample. Rinse the sample cell and cap with the sample three times before the sample cell is filled. Add reagents as specified by the method document. 8. Close the sample cell and clean the optical surfaces of the cell with a lint-free cloth. 9. Insert the sample into the cell holder. Make sure to install the sample cell in the correct and consistent orientation so that the results are more repeatable and precise. Refer to Figure 6. 10. Install the instrument cap over the cell holder. Refer to Figure 7. 11. Push . The display shows the results in concentration units or absorbance. Note: The result flashes if the result is less or more than the instrument range.

12. Remove the prepared sample from the cell holder. 13. Immediately empty and rinse the sample cell. Rinse the sample cell and cap three times with deionized water.

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Operation Figure 6 Sample cell orientation

1 Orientation mark

2 Sample cell, 25-mm (10 mL)

3 Sample cell, 1-cm (10 mL)

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Operation Figure 7 Install the instrument cap over the cell holder

5.3

Show the recorded measurements

Refer to the "rCL" option in Configure the instrument on page 13.

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Operation

5.4

Standard calibration adjust

Use the standard calibration adjust (SCA) option when a calibration must be adjusted to meet regulatory requirements. The factory calibration is adjusted slightly with the standard calibration adjust (SCA) option so that the instrument shows the expected value of the standard solution. The adjusted calibration is then used for all test results. This adjustment can increase the test accuracy when there are slight variations in the reagents or instruments. Note: For instruments with factory-calibrated ranges or methods, the standard calibration adjust (SCA) feature is disabled when a user-entered method is entered into the instrument. To set SCA back to on, set the instrument to the factory default calibration. Refer to Set to the factory default calibration on page 22.

5.4.1

Adjust the factory calibration with a standard

1. Complete the test procedure for the range to calibrate. For the sample, use the standard solution concentration given in the test procedure documentation. Note: If a standard solution concentration is not given in the test procedure documentation, a different known standard can be used.

2. When the test procedure is completed, push . 3. Push until “SCA” shows, then push . The display shows the standard calibration adjust value. 4. If a different known standard is used, enter the value of the standard: a. Push until "Edit" shows, then push . b. Push to enter the value of the standard. Push to go to the next digit. 5. Push to add the standard calibration adjust value to the factory calibration curve. The calibration adjusted icon shows on the display. Refer to Figure 5 on page 12.

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Operation 5.4.2

Set the standard calibration adjust to off

To use the factory default calibration again, set standard calibration adjust (SCA) to off. 1. Push 2. Push 3. Push

. until “SCA” shows, then push

.

until "OFF" shows, then push

.

Note: To set the SCA function to on again, calibrate with a standard.

5.5

User-entered calibration

This instrument accepts a user-prepared calibration curve. The calibration curve can be from 0 to 2.5 absorbance. Make sure that the calibration curve includes standard values that are less and more than the range of interest. The instrument range will be the same as the calibration range. For example, when the standards that are used are 1.00, 2.00 and 4.00. The instrument range is 1.00 to 4.00. There are two options to enter a user calibration curve: • Enter a calibration curve with standards-The standard solution values are entered with the keypad and the absorbance values are measured. • Enter a calibration curve with the keypad-The standard solution values and absorbance values are entered with the keypad. Note: If the instrument is set to off or the instrument power is removed before a user-entered calibration curve is completed, the calibration curve is not saved. The instrument automatically switches off in user-entered calibration entry mode after 60 minutes of no activity. User-entered calibrations are completed when the user goes out of calibration (cal) mode or edit mode.

5.5.1

Channel restrictions

A user-entered calibration curve can be entered into any channel that does not contain a factory-programmed curve. These channels have the label: • “abs” on the instruments that have a single factory calibration 18

Operation • “1” and “2” on the single wavelength instruments that are not calibrated Any chemistry that can be done at the instrument wavelength can contain a user-entered calibration in these channels.

5.5.2

Enter a calibration curve with standards

Note: Deionized water can be used for the blank unless the sample is significantly more turbid or has more color than deionized water.

1. Set the instrument to the range to calibrate. Refer to Configure the instrument on page 13. 2. Prepare the blank and the reacted standard solution. Refer to the test procedure. Let the color fully develop. 3. Set the instrument to zero. a. Insert the blank sample cell in the cell holder. b. Install the instrument cap over the cell holder. c. Push . The display shows “- - - -”, then “0.000”. d. Remove the instrument cap. e. Remove the sample cell from the cell holder. 4. Push and hold until "USER" and then "CAL" shows, then push . Note: If "USER" and "CAL" do not show, the factory calibration cannot be changed on the selected range.

5. If "RES" shows on the display, set the resolution. a. Push . The resolution setting (decimal placement) shows. b. To change the resolution, push , then . Push to save the change. c. To not change the resolution, push . Note: "RES" does not show on the display of factory-calibrated instruments because the resolution cannot be changed. Only instruments that are not factory calibrated or have "abs" as one of the two ranges show "RES" on the display.

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