PCE Instruments TUM 20 User manual

0.00 to 50.00 NTU, 50 to 1,000 NTU

TURBIDITY METER

Model : TUM 20

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.

OPERATION MANUAL

TABLE OF CONTENTS

1. FEATURES................................................................1

2. SPECIFICATIONS......................................................1

3. FRONT PANEL DESCRIPTION....................................

3-1 Cover of Testin

bottle........................................

3-2 Container of Testin

bottle...................................3

3-3 Display...............................................................

3-4 Hold Button ( Esc Button )...................................

3-5 TEST/CAL Button ( Enter Button )........................

3-6 Power Button...................................................... 3

3-7 ZERO Button.......................................................3

3-8 REC Button ( MAX, MIN Button )..........................

3-9 Testing bottle with 0 NTU standard solution........ 3

3-10 Testin

bottle with 100 NTU standard solution....

3-11 Empty testin

bottle 1........................................3

3-12 Empty testin

bottle 2........................................3

3-13 Battery Compartment/Cover...............................3

3-14 Clean Cloth.......................................................

3-15 Clean Solution ( Distill Water )............................3

4. MEASURING PROCEDURE..........................................4

4-1 Measurement Consideration.................................4

4-2 Measurement......................................................5

4-3 Zero...................................................................

4-4 Data Hold...........................................................

4-5 Data Record ( Max., Min. readin

).......................6

5. CALIBRATION PROCEDURE....................................... 7

6. CALIBRATION CLEAR................................................11

7. BATTERY REPLACEMENT...........................................13

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.

* Microprocessor circuit assures maximum possible

accuracy, provides special functions and features.

* Battery operated for field and on-site testing convenience.

* Data hold function for freezing the desired value on

display.

* Records Maximum and Minimum readings with Recall.

* Heavy duty & compact housing with hard carrying case,

designed for easy carry out & operation.

* Auto shut off is available to save battery life.

* Application : Test municipal water, food and beverage

water, or other aqueous solution where fluid clarity is

important.

2. SPECIFICATIONS

Circuit Custom one-chip of microprocessor LSI

circuit.

Display LCD size : 41 mm x 34 mm.

Range 0.00 to 50.00 NTU, 50 to 1,000 NTU

* NTU : Nephelometric Turbidity Unit

* Auto range

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 1.5 V battery ( UM4, AAA ) x 6 PCs,

or equivalent.

Power current Stand by Approx. DC 3.5 mA.

Testing Approx. DC 36 mA.

Weight 320 g/0.70 LB.

@ Battery is included.

Dimension 155 x 76 x 62 mm ( 6.1 x 3.0 x 2.4 inch)

Accessories Instruction manaual 1 PC.

Included Testin

bottle with 0 NTU standard, TU-0NTU....

1 PC.

estin

bottle with 100 NTU standard, TU-100NTU....

1 PC.

Empty testin

bottle ( Bottle-061 ).....................2 PCs

Clean cloth.......................................................1 PC.

Clean solution ( Distill water ).......................

1 bottle

Hard carryin

case, CA-08.................................1 PC.

Optional Testing bottle with 100 NTU standard solution, TU-100NTU

Accessories Testing bottle with 0 NTU standard solution, TU-0NTU

Empty testing bottle, 0601

3. FRONT PANEL DESCRIPTION

3-1 Cover of Testing bottle

3-2 Container of Testing bottle

3-3 Display

3-4 Hold Button ( Esc Button )

3-5 TEST/CAL Button

3-6 Power Button

3-7 ZERO Button

3-8 REC Button ( MAX, MIN Button )

3-9 Testing bottle with 0 NTU standard solution

3-10 Testing bottle with 100 NTU standard solution

3-11 Empty testing bottle 1

3-12 Empty testing bottle 2

3-13 Battery Compartment/Cover

3-14 Clean Cloth

3-15 Clean Solution ( Distill Water )

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.

When make the

measurement ( or

calibration ), it should

keep the " Container

white mark " face to face

together with the

" Testing bottle white mark "

3)Insert the " Testing bottle " to the bottom of

" Container " ( 3-2, Fi

. 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 withou

existing any dust.

4-2 Measurement

1)Fill the measurement liquid into the " Testing bottle "

( 3-11, 3-12, Fig. 1 ) .

Attention :

Model 0601

It should fill th

10 mL

measuremen

liquid capacit

until its leve

up to the " leve

marker " of the

" Testin

bottle

2)Insert the " Testing bottle " to the bottom of

" Container " ( 3-2, Fig. 1 ) completely.

3)Before the measurement, it should envelop in the

" Cover " ( 3-1, Fig. 1 ) completely.

4)Power ON the meter by pressing the " Power Button "

( 3-6, Fig. 1 ) once.

5)Press " TEST Button " ( 3-5, Fig. 1 ) once, the display

will show the text " tESt " ( TEST )", following the "

tESt " will flash approx. 10 seconds , then the TURBIDITY

value will present on the display along with the " ntu "

unit.

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 ).

4-3 Zero

When measure the " 0 NTU " liquid, if the display not show

the zero value, it can deduct ( offset ) those " not zero

value " with default, the zero procedures are :

Press the " ZERO Button " ( 3-7, Fig, 1 ) continuously

until the display show zero value then release the

finger from the button

* Remark :

The zero function can be executed within

the zero dift value < 2.0 NTU only.

4-4 Data Hold

During the measurement, press the " Hold Button " ( 3-4,

Fig. 1 ) once will hold the measured value & the LCD will

display a " HOLD " symbol.

* Press the " Hold Button " once again will release the data

hold function.

4-5 Data Record ( Max., Min. reading )

* The data record function records the maximum and

minimum readings. Press the " REC Button " ( 3-8, Fig.

1 ) once to start the Data Record function and there

will be a " REC. " symbol on the display.

* 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.

If intend to delete the minimum 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.

5. CALIBRATION PROCEDURE

1)The meter can be calibrated under two kinds standard

solution :

0 NTU standard solution

100 NTU standard solution

2)The meter ship along with

a. Testing bottle with 0 NTU standard solution x 1 PC

b. Testing bottle with 100 NTU standard solution x 1 PC

as the standard accessories.

3)The complete calibration should be executed by

following two solution :

0 NTU standard solution

100 NTU standard solution

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. 1, 3-4 Hold Button ( Esc Button )

Calibration button, Enter button :

Fig. 1, 3-5 TEST/CAL Button ( Enter Button )

6) 0 NTU calibration

a.Insert the " 0 NTU standard solution into the

" Container " ( 3-2 , Fig. 1) and envelope in the " Cover "

( 3-1, Fig. 1 ) completely, other procedures please

refer to above section 4-1, 4-2.

Table of contents

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