Instruction Manual HI 93703 Portable Microprocessor Turbidity Meter 1
Dear Customer, Thank you for choosing a HANNA instruments® product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. This instrument is in compliance with the directives. TABLE OF CONTENTS Preliminary examination ............................. 3 General description ...................
The meter housing is a rugged and lightweight case, with an easy-to-read LCD. To save battery-life, the instrument is equipped with an automatic shut-off feature which is activated after 4 minutes of non-use. The meter is very simple to use: all operations can be carried out with only four keys and troubleshooting functions can be performed with displayed error code guides. An exclusive positive-locking system guarantees that the cuvet is firmly placed in the cell.
SPECIFICATIONS FUNCTIONAL DESCRIPTION Range 0.00 to 50.00 FTU * 50 to 1000 FTU * 1 Resolution 0.01 and 1 FTU * Accuracy ±0.5 FTU* or ±5% of reading (whichever is greater) Typical EMC Deviation Calibration ±2% FS 3 point (0, 10 and 500 FTU*) Light Source 2 Infrared LED Light Source Life Life of the instrument Light Detector 6 3 Battery Type 4 x 1.5V AA alkaline Battery Life Approx.
OPERATIONAL GUIDE To prepare the instrument for taking measurements, first install the batteries (see Battery Replacement section on page 17) and then turn the instrument on. To maximize the battery life the meter is automatically switched off after 5 minutes of non-use. To reactivate it, simply press the ON/ OFF key. MEASUREMENT PROCEDURE • Turn the meter on by pressing the ON/OFF key. • The meter will carry out a self-test displaying a full set of figures.
• Even though HI93703 covers a very wide range of turbidity values, for very accurate measurements of samples exceeding 40 FTU *, Standard Methods require dilution. In such cases, the correct amount of HI 93703-0 or turbidity-free water to be added to the sample can be calculated as follows: Vos = 3000 / T where: Vos = volume of sample (mL) to be combined with HI 93703-0 to obtain the final volume of 100 mL. T = HI 93703 reading (exceeding 40FTU*) E.g.
SOURCES OF INTERFERENCE • Presence of floating debris and coarse sediments which settle out rapidly will give false readings. • The infrared light source used for HI 93703 turbidity meter, according to ISO 7027 International Standard, can effectively minimize errors due to colored dissolved substances. This effect, named "true color", is a common interference for most commercially available instruments operating in the range of visible light.
• To confirm the displayed data values and to go to the next step, press the CAL key once. A blinking "ZERO" message will appear. • Take the HI 93703-0 bottle containing the ZERO FTU* Standard (or turbidity-free dilution water) and fill the measurement cuvette. Note: In order to minimize any error introduced by the cuvette, it is recommended to use, during calibration, the same cuvette you are going to use to perform the measurement.
HOW TO ENSURE ACCURATE CALIBRATION The instructions listed below should be carefully followed during testing and during calibration: • All glassware that comes into contact with standards should be maintained clean. Wash with HI 93703-50 cleaning solution and rinse with HI 93703-0 or turbidity free water. • Rinse the vial twice with 5 ml of the liquid to be tested. This removes the effect of any previous liquid and any dust or foreign matter that may be present inside.
BATTERY REPLACEMENT All components have been selected to minimize current drain without compromising functionality. In order to minimize the battery consumption, the meter is equipped with an auto-off function which switches the meter off after 5 minutes of non-use. The power source are 4 alkaline batteries (1.5V AA) with an expected life of 60 hours, or 900 measurements.
LCD AND ERROR MESSAGES HI 93703 will display several different LCD messages to help the user throughout all operations. The meter is in a ready state and measurement or calibration can be performed. Calibration mode is active. If the CAL key is not pressed within 6 seconds, the meter will automatically switch to the measurement mode. Calibration date setting mode is active. "Sample In Progress": measurement is being performed.
ACCESSORIES HI 731318 HI 731321 HI 731313 HI 93703-0 HI 93703-05 HI 93703-10 HI 93703-50 CE DECLARATION OF CONFORMITY Tissue for wiping cuvets (4 pcs) Spare glass cuvet (4 pcs) Maintenance kit: rugged carrying case including HI 93703-0 and HI 93703-10 calibration solutions, HI 9370350 cuvet cleaning solution, 1 tissue for wiping cuvets and 2 cuvets AMCO-AEPA-1 @0 FTU* calibration solution, 30 mL AMCO-AEPA-1 @500 FTU* calibration solution, 30 mL AMCO-AEPA-1 @10 FTU* calibration solution, 30 mL Cuvet clean
SALES & TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (21) 4584.2941 • Fax (21) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
