Lutron Electronics SOIL PH METER Manuale utente

Pen type, separate electrode

SOIL PH METER

Model : PH-220S

our purchase of this

SOIL PH METER marks a

step forward for you

into the field o

precision measurement.

lthough this METER is

a complex and delicate

instrument, its durable

structure will allow

many years of use i

proper operating

techniques are

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 DESCRIPTIONS...................................3

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

3-2 Power button ( button ).................................▲3

3-3 Hold button ...................................................... 3

3-4 Display reverse button ( button )....................▼3

3-5 pH electrode BNC socket..................................... 3

3-6 BNC protection cover...........................................3

3-7 Battery compartment/Cover................................ 3

3-8 pH electrode handle........................................... 3

3-9 pH electrode sensing head................................... 3

3-10 pH electrode BNC plug...................................... 3

3-11 pH electrode protection bottle............................

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

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

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

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

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

6. REPLACEMENT OF BATTERY......................................5

7. OPTIONAL ACCESSORIES..........................................6

1. FEATURES

* Complete set with pen pH meter, soil pH electrode,

pH 4.0 /pH 7.0 standard buffer solution.

* Spear Tip pH electrode ( included ), ideal for

penetration pH measurement into soil, meats, cheese

and other type of measurements requiring sample

penetration. The electrode features a very durable

glass measuring spear packaged in a rugged virtually

unbreakable epoxy body.

* Separate soil pH electrode, easy for general purpose

usage and remote measurement.

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

* Build in reverse display button.

* Data hold.

* Auto power off.

* Compact size, light weight.

* Optional carrying case.

* Water resistance on the front panel.

* Application : Agriculture, Gardening, Food

industrial, Education, School, Colleges, Laboratory,

Industrial and Quality control.

SPECIFICATIONS

2-1 Meter

Display LCD, size : 20 mm x 28 mm.

* User can reverse the display direction

by push button.

Measurement 0 to 14 pH x 0.01 pH

Range

Resolution 0.01 pH

Accuracy ± 0.07 pH(pH5 to pH 9)

± 0.1 pH(pH4 to pH4.9, pH9.1 to pH10)

± 0.2 pH(pH1 to pH3.9, pH10.1 to pH13)

* 23± 5℃

* After calibration.

Input 10^12 ohms.

Impedance

Temperature Not necessary to make adjustment.

Compensation

Sampling Approx. 0.8 second.

Time

Hold Function To freeze the display reading value.

Calibration Auto calibration,

method pH 7, pH 4 ( or pH 10 )

pH electrode BNC connector.

connector

Operating 0 to 50 ( 32 to 122 )℃℉

Temperature

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 Meter :180 x 40 x 32 mm ( 7.1 x 1.6 x 1.3 inch ).

Electrode : Body size : 12 mm dia. x 160 mm.

Electrode cable length : approx.. 1000 mm.

Weight 220 g/0.48 LB (included electrode).

Standard Instruction Manual......................... 1 PC.

Accessories Soil pH electrode, PE-06HD............. 1 PC.

pH 4.0 buffer solution, PH-04A.......

1 PC.

pH 7.0 buffer solution, PH-07A.......

1 PC.

Optional * Soft carrying case with sash

Accessories ( 210 x 110 x 55 mm ),

Model : CA-05A

* Hard carrying case

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

2-1 Soil pH Electrode ( included )

pH Measuring 1 to 13 pH ( typical 0 to 14 pH ).

Range

pH Operation 5 to 60 ( 41 to 140 ).℃℉

Temperature

pH Electrode Combination type.

Structure

Reference Ag/AgCl, Double Junction.

of pH

Electrode

Zero Potential 7± 1 pH.

for pH Value

Repeatability 0.05 pH.

Response time 2 minutes.≧

Body Material Epoxy.

Connector BNC.

Mechanical With protection bottle ( soaker

Protection bottle ) on the electrode head.

Weight 68 g ( including cable & socket ).

Dimensions Body length - 160 mm.

Body Dia. - 12 mm.

Cable length - 1000 mm.

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display

3-2 Power button ( button )▲

3-3 Hold button

3-4 Display reverse button ( button )▼

3-5 pH electrode BNC socket

3-6 BNC protection cover

3-7 Battery compartment/Cover

3-8 pH electrode handle

3-9 pH electrode sensing head

3-10 pH electrode BNC plug

3-11 pH electrode protection bottle

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 ).

4-2 Requiring Equipment for Calibration

1)Combination soil pH electrode ( PE-06HD, 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)Connect the pH electrode plug ( 3-10, Fig. 1 ) to the BNC

socket ( 3-5, Fig. 1 ) and place electrode into pH 7.00

buffer solution ( PH-07A ).

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 " ( 3-3, Fig. 1 ) once, the display▼

will show following screen in sequence.

screen 1

CAL flashing

screen 2

7.00

flash CAL

screen 3

7.00 flashing

CAL

screen 4

End

screen 5 ( return to normal screen )

7.00

pH 4 calibration

1)Rinse the electrode in distilled water.

Place electrode into buffer pH 4.00 solution.

2)All the calibration procedures are same as the

above pH calibration, except :

a. Change the buffer solution to pH 4.00 ( PH-04A ).

b. The calibration screen value will change to 7.00

instead of 4.00

Remark :

* Except calibrate pH 7, pH 4, meter also can calibrate

pH 10.

* The calibration procedures should start from the pH 7 at

first, then pH 4 ( or pH 10 ).

* During the calibration, the circuit will sensing solution

value automatically. If the buffer solution value already

beyond 7± 1 pH. 4± 1 pH, 10± 1 pH, the LCD will

show " Err ".

* When the LCD show the screen 2, it allow the user to

adjust another calibration value precisely ( for example

7.01, 6.99... ) by pressing the " button " ( 3-2, Fig.▲

1 ) , " button " ( 3-4, Fig. 1 )'▼

* Rinse the electrode in distilled water before change

the buffer solution.

* Repeat above pH, pH calibration procedures two

times at least.

* After calibration, the " Electrode sensing head "

( 3-9, Fig. 1 ) should insert into the " Protection bottle "

( 3-11, Fig. 1 ).

PE-06HD, PH-07A, PH-04A is the consumer accessory.

5. MEASURING PROCEDURE

After the meter along the pH electrode is calibrated

( section 4-3 ) , the unit is ready for measuring.

1)Connect the pH electrode plug ( 3-10, Fig. 1 ) to the BNC

socket ( 3-5, Fig. 1 ) and place electrode into the

measured solution.

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

( 3-2, Fig. 1 ).

3)Place the electrode into the measured soil or other

type penetration material ( such as cheese, meats... )

or solution, then the instrument will display the pH

value.

* Electrode ( attached ) is the

rough and durable penetration

electrode. However user should

operate the electrode very carefully.

* The electrode is the consumer

accessory, after the electrode is

used, if the damage of the

Electrode Sensing Head ( Spear

Tip Head ), it is without warranty.

* After make the measurement, please rinse the

electrode in distilled water.

* After calibration, the " Electrode sensing head "

( 3-9, Fig. 1 ) should insert into the " Protection

bottle " ( 3-11, Fig. 1 ).

* PE-06HD, PH-07A, PH-04A is the consumer accessory.

Data hold

During the measurement, press the " Hold button " ( 3-3,

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.

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