0.00 to 50.00 NTU, 50 to 1,000 NTU TURBIDITY METER Model : TU-2016 Your purchase of this TURBIDITY METER marks a step forward for you into the field of precision measurement. Although this CHLORINE METER is a complex and delicate instrument, its durable structure developed. Please read the following instructions carefully and always keep this manual within easy reach.
TABLE OF CONTENTS 1. FEATURES................................................................ 1 2. SPECIFICATIONS...................................................... 1 3. FRONT PANEL DESCRIPTION.....................................3 3-1 Cover of Testing bottle.........................................3 3-2 Container of Testing bottle................................... 3 3-3 Display................................................................3 3-4 Hold Button ( Esc Button )...............................
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. Four operation buttons and two calibration points, easy operation and giarantee the spec. accuracy. Jumbo LCD, easy readout.
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 & Minimum value. Display Approx. 1 second. sampling time Power off Auto shut off saves battery life or manual off by push button. Calibration 0 NTU, 100 NTU. points Operating 0 to 50 ℃. temperature Less than 85% R.H. and humidity Power supply DC 1.
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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 " Container " ( 3-2, Fig. 1 ) and also on the up position of " Testing Bottle " ( 3-9, 3-10, 3-11, 3-12, Fig. 1 ), refer Fig. 2.
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. 4-2 Measurement 1)Fill the measurement liquid into the " Testing bottle " ( 3-11, 3-12, Fig. 1 ) .
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 ( Distill Water ) " ( 3-17, Fig. 1 ).
* 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 " Hold Button " ( 3-4, Fig. 1 ) once, then the display will show the " REC. " symbol only & execute the memory function continuously. b)Press the " REC Button " ( 3-8, Fig. 1 ) again, the " REC. MIN. " symbol along with the minimum value will appear on the display.
4) Shaking the calibration bottle lightly Before execute the calibration, it should shake lightly ( not strongly ) the Standard solution ( TU-0NTU, TU-100NTU ) one to two seconds to let the calibration solution under the uniform condition. Remark : Do not shake the Standard solution strongly due to it may generate the " Air bubble " and let the solution existing not accurate value. 5) The buttons that will be used during the Calibration procedures Escape button, select button : Fig.
b. Press " CAL Button " ( 3-5, Fig. 1 ) continuously (at least 3 seconds ) until the Display show the text " CAL " then release the button. CAL Fig. 5-1 ntu c. After the LCD show above Fig. 5-1, wait a while the display will show 0.00 CAL ntu Now the meter is ready for the " 0 NTU " calibration d. Press " CAL Button " ( 3-5, Fig. 1 ) once, the Display will show following text with flashing ( approx. 10 seconds ). flashing CAL 0.
Then the Display will show : 100 CAL ntu Now the meter is finished the " 0 NTU " calibration procedures and ready for " 100 NTU " calibration procedures. 7) 100 NTU calibration When finish the " 0 NTU " calibration procedures and the Display show : 100 CAL ntu The meter is ready for " 100 NTU " calibration. * Insert the " 100 NTU standard solution into the " Container " ( 3-2 , Fig. 1) and envelope in the " Cover " ( 3-1, Fig. 1 ) completely. Press " CAL Button " ( 3-5, Fig.
Then the LCD display will return to normal measurement screen, now the meter is finished the calibration procedures ( 0 NTU, 100 NTU calibration ) completely and ready for the measurement. 8) During the calibration, if exit something wrong ( Error, can not be calibrated....... ), please check if the " Standard solution " value is wrong, if still can not fix the problem , then execute the execute the " Calibration clear " procedures ( Section 6 ) may can fix the problem. 6.
Press " Hold Button " ( 3-4, Fig. 1 ) once the display will show : 100 CAL ntu Press " Hold Button " ( 3-4, Fig. 1 ) once again the display will show : CLr CAL ntu Now the meter is ready for the " Calibration clear " Press " CAL Button " ( 3-5, Fig. 1 ) once, the Display will show following text with flashing ( approx. 10 seconds ).
7. 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 " Battery Cover Screws " and slide the " Battery Cover " ( 3-13, Fig. 1 ) away from the instrument and remove the battery. 3)Replace with DC 1.5 V battery ( UM4, AAA, Alkaline/heavy duty ) x 6 PCs, and reinstate the cover.
