1. FEATURES * Designed to meet ISO 7027. * NTU ( Nephelometric TURBIDITY Unit ) measuring unit. * Wide and auto measurement range : 0 to 1,000 NTU. * High resolution : 0.01 NTU/1 NTU. * The unique optics structure, enables the instrument to read low value of TURBIDITY to the high level up to 1,000 NTU.
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Accuracy ± 5 % F.S. or ± 0.5 NTU, which ever is greater. Light source LED, 850 nm. Detector Photo diode Standard Meet ISO 7027. Response time Less than 10 seconds. Sample volume 10 mL. needed Data hold Freeze the display reading. Memory recall Maximum &...
4. MEASURING PROCEDURE 4-1 Measurement Consideration White mark on the up position of " Testing Bottle " White mark on the edge of the " Container " Fig. 2 1)There is a " White mark " on the edge of the "...
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3)Insert the " Testing bottle " to the bottom of " Container " ( 3-2, Fig. 1 ) completely. 4)Before the measurement, it should envelop in the " Cover " ( 3-1, Fig. 1 ) completely. Remark : Before the measurement, it should keep the outside of Testing Bottle under the dry condition and without existing any dust.
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Remark : * Under power OFF, if press the TEST Button " ( 3-5, Fig. 1 ) will power ON and going on to make the test automatically. * After the testing, within ten minutes approx., the meter will auto power OFF automatically. Wash ( Reinse ) the Testing bottle * After the testing, it should wash ( reinse ) the Testing Bottle by the Clean Solution...
* With the " REC. " symbol on the display : a) Press the " REC Button " ( 3-8, Fig. 1 ) once, the " REC. MAX. " symbol along with the maximum value will appear on the display. If intend to delete the maximum value, just press the "...
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Shaking the calibration bottle Before execute the calibration, it should shake the Standard solution ( TU-0NTU, TU-100NTU ) at least 5 seconds to keep the calibration solution under the uniform condition. 0 NTU calibration * Insert the " 0 NTU standard solution into the "...
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* During the display show text " CAL ", press the " CAL Button " ( 3-5, Fig. 1 ), the display will show 0.00 Now the meter is ready for the " 0 NTU " calibration * Press " CAL Button " ( 3-5, Fig. 1 ) once, the Display will show following text with flashing ( approx.
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100 NTU calibration Refer to page 8, when finish the " 0 NTU " calibration procedures and the Display show The meter is ready for " 100 NTU " calibration. * Insert the " 100 NTU standard solution into the "...
6. BATTERY REPLACEMENT 1)When the left corner of LCD display show " ", it is necessary to replace the battery. However, in-spec. measurement may still be made for several hours after low battery indicator appears before the instrument become inaccurate. 2)Loss the "...
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