Lutron Electronics PH-222 Manuel utilisateur

PEN pH METER

Your purchase of this PEN pH METER

marks a step forward for you into the field

of precision measurement. Although this

meter is a complex and delicate instrument,

its durable structure will allow many years

of use if proper operating techniques are

developed. Please read the following

instructions carefully and always keep this

manual within easy reach.

TABLE OF CONTENTS

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

2. SPECIFICATIONS......................................................

3. FRONT PANEL DESCRIPTIONS...................................4

3-1 Display............................................................... 4

3-2 Power ( Logger, ) Button.................................

▲4

3-3 Hold ( Enter, CAL ) button ...................................4

3-4 REC ( / button, ) Button............................℃℉ ▼ 4

3-5 pH electrode ( Temp. sensor )..............................4

3-6 Battery compartment/Cover................................ 4

3-7 Protection cover................................................ 4

3-8 pH 7.00 buffer solution, PH-07A...........................

3-9 pH 4.00 buffer solution, PH-04A...........................

4. pH CALIBRATING PROCEDURE..................................

4-1 Calibrating Consideration......................................5

4-2 Requiring Equipment for Calibration......................5

4-3 Calibration procedures.........................................

5.MEASURING PROCEDURE..........................................

5-1 pH measurement.................................................10

5-2 Data hold............................................................11

5-3 Data record ( Max., Min. reading )........................

5-4 Change Temp. unit , ....................................

℃℉ 12

6.DATA LOGGER..........................................................

6-1 Save data........................................................... 12

6-2 Call data.............................................................

6-3 Delete data ( Empty the memory )........................14

7. REPLACEMENT OF BATTERY......................................15

8. REPLACEMENT OF pH ELECTRODE.............................15

9. OPTIONAL ACCESSORIES..........................................16

1. FEATURES

* Pen type digital pH meter, all in one, pH electrode is

included, easy for general purpose application.

* Build in temperature sensor, ATC ( auto temperature

compensation ).

* pH 4, pH 7 standard solution are standard accessories.

* Easy to change the pH electrode.

* Temperature measurement, , .℃℉

* IP67, water proof and protection.

* Auto calibration for pH 4, pH 7 or pH 10 or other value.

* High input impedance.

* LCD with two displays and bar graph indicator.

* Data hold function for freezing the desired value.

* Auto power off.

* Records max. and min. value with recall.

* 100 point data logger 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,

* Available for wide applications, such as aquarium,

beverage, fish hatcheries, food processing,

photography, laboratory, quality control, school &

colleges, swimming pools, water conditions.

2. SPECIFICATIONS

Display LCD, size : 20 mm x 28 mm.

* With bar graph indicator.

Measurement pH 0 to 14 pH.

Range Temp. -5 to 80 ( 23 to 176 ).℃℉

Resolution pH 0.01 pH.

Temp. 0.1 / 0.1 .℃℉

Accuracy pH ± 0.02 pH

* After calibration, meter

without PE-12 electrode.

±0.2pH

* After calibration, meter

with PE-12 electrode.

Temp. ± 0.8 / ± 1.5 .℃℉

pH Input 10^12 ohms.

Imped

pH Electrode Included

* PE-12

pH Temp. ATC ( Automatic temperature

Compensation compensation ), build thermister Temp.

sensor.

Data Hold Freeze the display reading.

Memory Recall Maximum & Minimum value.

Sampling Approx. 0.8 second.

Time

pH pH 7, pH 4 or pH 10, 3 points

Calibration calibration ensure the best linearity and

accuracy.

Other calibration point that near the

pH 7, pH 4, and pH 10 are available.

Data Logger Max. can save 100 point data with recall.

Manual, push the data logger button

once will save data one time.

Circuit Custom one-chip of microprocessor LSI

circuit.

Operating Meter :

Temperature 0 to 60 ( 32 to 140 ).℃℉

pH electrode :

-5 to 80 ( 23 to 176 ).℃℉

Operating Less than 80% RH.

Humidity

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

Power Approx. 4.8 mA.

Consumption

Dimension 186 x 40 x 32 mm

( 7.3 x 1.6 x 1.3 inch ).

*Meter with pH electrode.

Weight 131 g/0.36 LB (included electrode).

Power off Auto power shut off to save battery life.

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

1 PC

Accessories pH electrode, PE-12.......................

1 PC

pH 7.00 buffer solution, PH-07A...... 1 PC

pH 4.00 buffer solution, PH-04A...... 1 PC

* PE-12, PH-07A, PH-04A are the

consumer accessory.

Optional pH ELECTRODE, Model : PE-12

Accessories pH 7.00 buffer solution, Model : PH-07A

pH 4.00 buffer solution, Model : PH-04A

Hard carrying case, Model : CA-06

Soft carrying case, Model : CA-52A

* refer page 16

3. FRONT PANEL DESCRIPTION

3-1 Display

3-2 Power ( Logger, ) Button▲

3-3 Hold ( Enter, CAL ) button

3-4 REC ( / button, ) Button℃℉ ▼

3-5 pH electrode +Temp. sensor, PE-12

3-6 Battery compartment/Cover

3-7 Protection cover

3-8 pH 7.00 buffer solution, PH-07A

3-9 pH 4.00 buffer solution, PH-04A

4. pH CALIBRATING PROCEDURE

4-1 Calibrating Consideration

The pH meter already calibrated by mV signal that

simulated from the ideal pH ELECTRODE mV output

( base on 25 environment ). However due to (a) An℃

ideal electrode will produce 0 mV at pH 7.00, but most

electrodes are slightly off. (b) The measuring environment

temperature may not near 25 ( 15 to 35 ).℃℃

If intend to keep instrument combined electrode within

high accuracy, it is necessary to make the following

calibration procedures ( 4-3 ).

* Basic calibration ( single point calibration ) :

pH 7 calibration.

* Complete calibration ( two points calibration ) :

pH 7 calibration and pH 4 calibration.

* During execute the calibration procedures,

if the Display show " Error " information, then please

do the " Calibration clear " procedures, refer page 8.

4-2 Requiring Equipment for Calibration

1)Combination pH electrode ( PE-12, included ).

2)Buffer solutions :

pH 7.00 buffer solution ( PH-07A, included ).

pH 4.00 buffer solution ( PH-04A, included ).

4-3 Calibration procedures

pH 7 calibration

1)Rinse the electrode in distilled water.

2)Power on the instrument by pressing the " Power button "

( 3-2, Fig. 1 ).

3)Press the " Hold button " ( 3-3, Fig. 1 ) once.

the display will show the " HOLD " symbol.

Press the " button " ( 3-4, Fig. 1 ) once, the display▼

will show following screen in sequence.

screen 1

CAL flashing

screen 2

7.00

CAL

4)Place the electrode into pH 7.00 buffer solution ( PH-07A )

Press the " Hold button " ( 3-3, Fig. 1 ) once.

The " 7.00 " will flashing, following show " End ".

then return the normal measurement screen and

finish the pH 7.00 calibration procedures.

screen 3

7.00 flashing

CAL

screen 4

End

screen 5

7.00

return to normal screen

pH 4 calibration

1)Rinse the electrode in distilled water.

2)Power on the instrument by pressing the " Power button "

( 3-2, Fig. 1 ).

3)Press the " Hold button " ( 3-3, Fig. 1 ) once.

the display will show the " HOLD " symbol.

Press the " button " ( 3-4, Fig. 1 ) once, the display▼

will show following screen in sequence.

screen 1

CAL flashing

screen 2

7.00

CAL

4)Press the " button " ( 3-4, Fig. 1 ) once, the display▼

will show :

screen 3

4.00

CAL

5)Place the electrode into pH 4.00 buffer solution ( PH-04A )

Press the " Hold button " ( 3-3, Fig. 1 ) once.

The " 4.00 " will flashing, following show " End ".

then return the normal measurement screen and

finish the pH 4.00 calibration procedures.

screen 4

4.00 flashing

CAL

screen 5

End

screen 6

4.00

return to normal screen

Calibration clear

During execute the calibration procedures, if

happen some thing wrong ( Display show Error

information ), then execute the following "

Calibration clear " procedures will clear all the

existing calibration data and return to the Default

value.

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