Lutron Electronics PWA-301 Bedienungsanleitung

1. FEATURES

he quality of the water is getting much more concerned

by the human being and it also an important factor in the

industrial sectors, laboratories or other fields.

* In industrial sectors, it would be a great help for the

quality of the products if using the good water ( more

pure water ) in the process.

* It may cause several diseases if home drink water existing

high conductivity & contain impurities, the Pure Water

ester ( Water Quality Tester) are designed to check the

purity of water (water conductivity) also can determine

the condition of the " Water Filter " easily and rapidly.

he tester is used to measure the conductivity value

( ranging from 0 - 1,999 uS) which can therefore judge

whether water is pure or not. The conductivity value will

become lower if there is much less impurities existed in

water ( for example, distilled water that its purity is higher

than others will get a lower conductivity value of approx.

< 10 uS ).

* Many people always take many kinds of procedures on

water treatment by install the different kinds of

equipment, such as filter or purifier to improve the

quality of water. However, most of people do not

know whether the procedures or filter is effective and

can con- tribute to the quality of water. General

speaking, the impurities will be filtered out if the

water process procedures attain the expected result,

thus we can use this instrument to measure the

conductivity value of purified water and to judge the

effect of the filter (or water process procedures).

* Application : Water conditioning. aquarium, food

processing, photography, school, laboratory, industrial

and quality control.

* Check the condition of water filter.

* Measurement range : 0 to 1,999 uS.

* Pen type, meter with probe, all in 1, easy operation.

* Carbon rod electrode for long life.

* Build in temperature sensor, ATC ( auto temperature

compensation ).

* IP67, water proof and protection.

* Data hold function for freezing the desired value.

* Auto power off to save the battery life.

* Records max. and min. value with recall.

* Microcomputer circuit, intelligent function, high accuracy.

* Compact size, light weight.

* Power supply by DC 1.5 V battery ( UM4/AAA ) x 4 PCs,

2. SPECIFICATIONS

Display LCD, size : 20 mm x 28 mm.

Measurement 0 to 1999 uS.

* uS - micro simens cm.

Resolution 1 uS.

Accuracy ± ( 3 % + 1 d ) F.S.

* F.S. : full scale.

* 23 ± 5 ℃

Temperature Automatic, 0 to 50 ( 32 to 122 ).℃℉

Compensation

Probe Carbon rod electrode for long life.

Structure

Data Hold Freeze the display reading.

Memory Recall Maximum & Minimum value.

Sampling Approx. 0.8 second.

Time

Circuit Custom one-chip of microprocessor LSI

circuit.

Power off Auto shut off saves battery life or

manual off by push button.

* Power will off automatically after

10 min., if no button be pressed.

Operating 0 to 50 ( 32 to 140 ).℃℉

Temperature

Operating Less than 80% RH.

Humidity

Power Supply DC 1.5V battery ( UM-4/AAA ) x 4 PCs.

Power Approx. 5.7 mA.

Consumption

Dimension 190 x 40 x 40 mm

( 7.5 x 1.6 x 1.6 inch ).

Weight 171 g/0.38 LB.

Standard Instruction Manual.........................

1 PC

Accessories

Optional * Soft carrying case with sash

Accessories ( 210 x 80 x 50 mm ), Model : CA-52A

* Hard carrying case

( 280 x 195 x 65 mm ), Model : CA-06

3. FRONT PANEL DESCRIPTION

3-1 Battery compartment/Cover

3-2 Display

3-3 Power Button

3-4 Hold Button

3-5 REC Button

3-6 Conductivity Electrode

3-7 Protection Cover

4. MEASURING PROCEDURE

4-1 Check the water's conductivity (water condition)

1)Turn on the meter by pressing the " Power Button "

( 3-3, Fig. 1 ) momentarily.

* Press the " Power Button " ( 3-3, Fig. 1 )

momentarily again will turn off the meter.

The " Display " ( 3-2, Fig. 1 ) will show the unit as :

uS 0

Now the meter is ready for the measurement.

2)Hold the meter by hand and immerse the " Sensing

Electrode " ( 3-6, Fig. 1 ) immersed wholly into the

measured solution. Shake the " Sensing Electrode " to

let the electrode's internal air bubble drift out from the

sensing Electrode.

" Display " ( 3-2, Fig. 1 ) will show the conductivity

values in uS unit,

When make the

measurement should

immerse the " Sensing

Electrode " immersed

Fig. 2 wholly into the measured

solution.

3)a. If the water is pure, then the meter will display the low

conductivity values, typically. For example the distill

water conductivity value will approx. less than 10 uS.

b. If the water contain the impurity, then the meter will

show the high conductivity typically.

c. From the different water's conductivity value, user can

juge the water quality condition.

( Due to drinking mineral water contain the mineral

material, when measure the mineral water if the meter

display the high conductivity value, it is normal.)

4-2 Check the filter condition

1)Power on the meter by pushing the " Power On Button "

( 3-3, Fig. 1 ).

2)Hold the meter by hand and immerse the " Sensing

Electrode " ( 3-6, Fig. 1 ) immersed wholly into the

measured solution. Shake the " Sensing Electrode " to

let the electrode's internal air bubble drift out from the

sensing Electrode, refer to Fig. 2.

3)First check the reading values ( uS ) for the water that is

not made the treatment ( not via the FILTER ), then

record the reading value, ref. Fig. 3

Fig. 3

3)Secondary check the reading values ( uS ) for the water

that already make the treatment ( after the FILTER ),

ref. Fig. 4.

Fig. 4

4)If the water quality already be improved, then the reading

values should be change with a certain values, other wise

the FILTER is dirty or not under the normal condition.

4-3 Data Hold

1)During the measurement, press the " Hold Button "

( 3-4, Fig. 1 ) momentarily to hold the measured

value. The LCD will show a " HOLD " symbol.

2)Press the " Hold Button " once again to release the

data hold function.

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

1)The data record function records the maximum and

minimum readings. Press the " REC Button " ( 3-5, Fig. 1 )

momentarily to start the Data Record function,

shows " REC " on the display.

2)With the " REC " symbol on the display.

a) Press the " REC Button " ( 3-5, Fig. 1 ) momentarily,

the " REC MAX " symbol along with the maximum

value will appear on the display.

b)Press the " REC Button " ( 3-5, Fig. 1 ) momentarily

again, the " REC MIN " symbol along with the

minimum value will appear on the display.

When display shows " REC MAX " or " REC MIN ",

* press the " Hold Button " ( 3-4, Fig. 1 )

momentarily will delete the max. ( min. ) value,

the display will show the " REC. " only and

execute the memory function continuously.

c) To exit the memory record function, press the

" REC " button for 2 seconds at least. The display will

revert to the current reading, not show " REC "

indicator.

4-5 Auto power off management

The meter has built-in "Auto Power Shut-off " function in

order to prolong battery life. The meter will switch off

automatically if none of the buttons are pressed within

10 min..

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