Instruction Manual LP 2000 Microprocessor-based Bench Turbidity Meter w w w . h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna Product. Please read this instruction manual carefully before using the instrument. It will provide you with the necessary information for the correct use of the instrument, as well as a precise idea of its versatility. directives. This instrument is in compliance with TABLE OF CONTENTS PRELIMINARY EXAMINATION ...................................................... 3 GENERAL DESCRIPTION ..............................................................
PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it to make sure that no damage has occurred during shipping. If there is any damage, notify your dealer immediately.
UNITS OF MEASURE Hanna Instruments uses the primary standard AMCO-AEPA-1 to avoid all formazine-related problems. Formazine is a toxic, unstable substance, which requires particular care. Calibration requiring formazine standards must be preformed immediately after preparation of the standards. Formazine standards may not be reused because of their short life. LP 2000 standards are extremely stable and have a shelf life of up to six months. Uncontaminated standards may be reused.
FUNCTIONAL DESCRIPTION 1) 2) 3) 4) 5) Cuvette Holder Dual Level Liquid Crystal Display ON/OFF CAL, to enter the Calibration Mode READ/▲, to perform measurements and to set the day and month of the last calibration 6) DATE/ , to display the last calibration date and to select the month or the day of the last calibration i) Power Socket 12V to 20V DC 5
SPECIFICATIONS LP 2000 0.00 to 50.00 FTU* 50 to 1000 FTU* 0.01 / 1 FTU* ±0.5 FTU* or ±5% (whichever greater) 0.2 FTU* Range Resolution Accuracy (@ 20°C/68°F) Typical EMC Deviation Light Source Light Source Life Light Detector Power Source Environment Dimensions Weight High Emission Infrared LED Life of the instrument Silicon Photocell 12VDC through HI 710005 or HI 710006 0 to 50°C (32 to 122°F); max. RH 95% non-condensing 230 x 170 x 70 mm (9.1 x 6.7 x 2.7") 600 g (1.3 lb.
OPERATIONAL GUIDE POWER CONNECTION Plug the 12VDC adapter (HI 710005 - 110VDC, or HI 710006 220VDC) into the DC socket (see page 5). Plug the adapter into the outlet. Note: Insure the main line is surge protected. Note: Always turn the meter off before unplugging it to insure no data is lost. MEASUREMENT PROCEDURE • Turn the meter on by pressing ON/OFF. • The meter will first perform an LCD self diagnostic test by displaying a full set of figures. It will then switch to the measurement mode.
• The mark on the cuvette cap should point towards the keyboard. • Press the READ/▲ key and the LCD will display an intermittent “SIP” (Sampling In Process). • The turbidity value will appear after approximately half a minute. • Though LP 2000 covers a wide turbidity range, highly accurate readings exceeding 40 FTU require dilution as recommended by the Standard Methods. Use the formula below to calculate the amount of HI 93703-0 or turbidity-free water needed for accurate dilution.
TIPS TO OBTAIN BEST ACCURACY • Each time the cuvette is used, tighten the cap to the same degree. • Discard the sample immediately after the reading is taken to prevent permanent clouding of the glass. • All glassware used to contain the standards and the samples should be kept clean, washed with HI 93703-50 cleaning solution and rinsed with HI 93703-0 or turbidity-free water. • Samples should be collected in clean glass or plastic bottles with appropriate stoppers.
CALIBRATION Calibration is recommended at least once a month. You can verify the instrument calibration by comparing the display reading against the supplied standard solution at 10 FTU. To check the date of the last calibration, simply hold the DATE/ key down for a few seconds. CALIBRATION PROCEDURE • Turn the meter on and wait for the display to show "----". • Press the CAL key once. "CAL" will blink on the display for approx. 6 seconds, allowing for confirmation.
• Using the HI 93703-0 bottle containing the ZERO FTU Standard (or turbidity-free water), fill the measurement cuvette and secure the cap. Note: To minimize error caused by the cuvette, it is recommended to use the same cuvette for calibration and measurement. • Insert cuvette into the holder. • Press CAL. An intermittent “SIP” indicates that the instrument is being calibrated. • After approximately 1 minute, the instrument will ask for the HI 93703-10 standard solution @ 10 FTU by displaying “10.0”.
• Before inserting the vial into the instrument, wipe it clean with HI 93703-70 or a soft, lint-free tissue. Handle vials so that no fingerprints are left on the areas where light passes through, that is the bottom 2 cm (3/4”). STANDARD SUSPENSION Presently, there are only two recognized primary standards: AMCO-AEPA-1 (available through Hanna) and formazine. LP 2000 works with both solutions.
LCD AND ERROR CODES LP 2000 displays several different LCD codes to help the user to operate the meter more efficiently. This indicates that the meter is in a ready state and measurement or calibration can be performed. This indicates that the Calibration Mode is active. If the CAL key is not pressed within 6 seconds, the meter will automatically revert back to the Measurement Mode. This indicates that the Calibration Date Setting Mode is active.
ACCESSORIES HI 710005 HI 710006 HI 731318 HI 731321 HI 731325 HI 93703-0 110VDC voltage transformer 220VDC voltage transformer Tissue for wiping the cuvettes (4pcs) Glass measurement cuvettes (4pcs) Cap for cuvette (4pcs) Solution for calibration AMCO-AEPA-1 at 0 FTU, 30 mL HI 93703-10 Solution for calibration AMCO-AEPA-1 at 10 FTU, 30 mL HI 93703-50 Cuvette cleaning solution, 230 mL WARRANTY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used fo
CE DECLARATION OF CONFORMITY Recommendations for Users Before using this product, make sure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance.
MANLP2000R1 10/02 w w w . h a n n a i n s t .
