MRC PH-207 Bedienungsanleitung

our purchase of this pH

METER marks a step

forward for you into the

field of precision

measurement. Although

this pH 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.

PH METER

Model : PH-207

OPERATION MANUAL

3, Hagavish st. Israel 58817 Tel: 972 35595252, Fax: 972 3 5594529

[email protected]

MRC. 7.18

TABLE OF CONTENTS

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

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

3. FRONT PANEL DESCRIPTION..................................4

4. PH CALIBRATING PROCEDURE...............................

4-1 Calibrating Consideration 5

4-2 Requirin

Equipment for calibration................... 5

4-3 Two Points Calibration...................................... 5

4-4 Sin

le Point Calibration..................................... 6

5. PH TEMPERATURE COMPENSATION........................6

5-1 Manual temperature compensation.................... 7

5-2 Automatic temperature compensation................7

6. MEASURING PROCEDURE.......................................7

6-1 PH Measurement..............................................7

6-2 mV Measurement............................................. 8

6-3 Temp. Measurement.........................................8

7. CIRCUIT ADJUSTING PROCEDURES WHEN

CHANGING THE TEMP. PROBE...............................

8. MEASURING CONSIDERATION............................... 12

9. RS232 PC SERIAL INTERFACE.................................12

10. BATTERY REPLACEMENT........................................ 14

11. OPTIONAL ACCESSORIES.......................................

1. FEATURES

* Microprocessor circuit assures high accuracy and provides

special functions and features.

* Super large LCD display with contrast adjustment for best

viewing angle.

* Dual function meter's display.

* Heavy duty & compact housing case.

* Records Maximum, Minimum and Average readings with

RECALL.

* Data hold.

* Auto shut off saves battery life.

* Operates from OO6P DC 9V battery.

* RS 232 PC serial interface.

* Used the durable, long-lasting components, including a

strong, light weight ABS-plastic housing case.

* Multi-measurement : PH, mV, Temperature.

* Temperature function for 蚓or 蚌be selected by push

button on front panel easily.

* Show the PH & temperature values on the same LCD

display at the same time.

* High input impedance avoid measuring error.

* Wide manual temperature compensation range from

0 蚓to 100 蚓, high accuracy.

* Auto temperature compensation range via. the external

optional temp. probe.

* The values of "Manual temp. compensation" are reading

from the LCD display directly, no errors & easy operation .

* With the optional temp. probe for automatic temp.

compensation of PH function or temp. measurement.

* The instrument build in mV(milli volt) measuring

function, letting you make ion-selective, ORP, and other

precise mV measurement.

* Wide applications: water conditioning, aquariums, beverage,

fish hatcheries, food processing, photography, laboratory,

paper industry, plating industry, quality control, school &

college, water conditioning.

IFI

ATI

2-1 General Specifications

Circuit Custom one-chip of microprocessor LSI

circuit.

Display Dual function meter's display, 13 mm(0.5")

Super lar

e LCD display with contrast

adjustment for best viewing angle.

Measurement PH 0 to 14 PH

mV 0 to 1999 mV

Temperature 0 to 65 蚓

32 to 150 蚌

Input 10 12ohms.　

Impedance

Temperature Manual 0 to 100 蚓, adjusting by

Compensation push button on front panel.

For Automatic With the optional TEMP.

PH Range probe, 0 to 65 蚓.

Calibration Built in SLOPE(PH 4) & CAL.(PH 7)

For calibration VR ( multi-turns potentiometers )

PH Range on front panel, high reliability.

Data hold To hold the reading values on display.

Memory Records Maximum, Minimum and Average

Recall readings with RECALL.

Power off Auto shut off saves battery life, or manual

off by push button.

Data Output RS 232 PC serial interface.

Over input Indication of "- - - -".

indication

PH Any combination PH electrode with

Electrode BNC connector/

Operating 0 蚓to 50 蚓(32 蚌to 122 蚌).

Temperature

Operating Max. 80% RH.

Humidity

Samplin

Time Approx. 0.8 second.

Power Supply 006P DC 9V battery(Heavy duty type).

Power Current Approx. DC 5.7 mA.

Weight 270 g/0.59 LB (included batteries)

Size ( meter ) 180 x 72 x 32 mm(7.1 x 2.8 x1.3 inch).

Standard Instruction manual...........1 PC.

Accessories

Optional Carryin

case

Accessories pH electrode, PE-01, PE-11, PE-03.

ATC temp. probe, TP-07.

PH 4 buffer solution, PH-04.

PH 7 buffer solution, PH-07.

2-2 Electrical Specifications (23 5 蚓)

Measurement Range Resolution Accuracy

PH 0 to 14 PH 0.01 PH 0.03 PH + 2 d)

mV 0 to 1999 mV 1 mV (0.5% + 1 d)

Temp.(

蚓

) 0 to 65

蚓

0.1

蚓

( 0 - 50蚓)

蚓

( > 50蚓)

Temp.(

蚌

) 32 to 150

蚌

0.1

蚌

(32 - 122蚌)

蚌

( > 122蚌)

PH accuracy are based on after calibration, meter only.

Spec. tested under the environment RF Field Stren

th les

than 3 V/M & frequency less than the 30 MHz only.

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display 3-10 Manual Temp. Button

3-2 Power Off/On button 3-11 Function Select Switch

3-3 Data Hold Button 3-12 SLOP(PH 4) Calibration

3-4 蚓/ 蚌button VR

3-5 LCD Contrast Adjust 3-13 >> Button

VR (Manual Temp. adjust)

3-6 Memory "Record" 3-14 Battery Compartment/

Button Cover

3-7 Memory "Call" Button 3-15 Input Socket

3-8 > Button (BNC, for PH & mV)

(Manual Temp. ad

ust) 3-16 RS-232 Out Terminal

3-9 CAL.(PH 7) Calibration 3-17 Temp. Probe Input Socket

4. PH CALIBRATING PROCEDURE

4-1 Calibrating Consideration

The PH meter already calibrated by mV signal

that simulated from the mV output of the ideal PH

ELECTRODE (base on 25 environment). For an

ideal electrode will produce 0 mV at PH 7.00, but

most electrodes are slight off.

It is necessary to make the following calibration

procedures (4-2, 4-3), if the user intend to keep

instrument along the electrode within high accuracy or the

first time use the meter & the electrode.

4-2 Requiring Equipment for Calibration

1)Combination PH ELECTRODE(optional).

2)Two buffer solutions (optional) : PH-07 & PH-04.

4-3 Two Points Calibration

)

Power on the instrument using the " Power On/Off

Button " (3-2, Fig.1).

2)Select the " Function Switch " (3-11, Fig.1) to the

" PH MANUAL TEMP. " position.

3)Adjust the " Temperature Compensation Values " to

be same as the temperature values of the PH-04

buffer solution.

The adjusting procedures, please refer to 5-1.

4)Connect the combination PH ELECTRODE to the

" BNC socket " (3-15, Fig. 1) and place the electrode

into the buffer solution PH-07.

Use the screw to adjust the " PH 7 calibration VR " (3-9,

Fig.1) until the display reading reach to 7.00 0.01.

5)Rinse the electrode in the distilled water.

Place the electrode into the PH-04 ( or PH-10 ) buffer

solution. Use the screw to adjust the " PH 4 calibration

VR " (3-12, Fig.1) until the display reading reach to

4.00 0.01 ( or 10.00 0.01 for PH-10 ).

6)Rinse the electrode in the distilled water again.

7)Repeat above (4) to (5) procedures two times at least.

8)The instrument and electrode are now finished the

" TWO POINTS CALIBRATION " & ready for the

measurement.

4-4 Single Point Calibration

1)Power on the instrument by pushing the " Power On/Off

Button " (3-2, Fig.1).

2)Select the " Function Switch " (3-11, Fig.1) to the

" PH MANUAL TEMP. " position.

3)Connect the combination PH ELECTRODE to the "

BNC socket " (3-15, Fig. 1) and place the electrode into

the PH-07 buffer solution.

Use the screw to adjust the " PH 7 calibration VR " (3-9,

Fig.1) until the display reading reach to 7.00 0.01.

4)Repeat above (3) procedures two times at least.

5)The instrument and electrode are now finished the

" SINGLE POINTS CALIBRATION " & ready for the

measurement.

5. PH TEMPERATURE COMPENSATION

Enables the meter to read solutions at various tempera-

tures. The meter corrects for an electrode's temperature

dependency. The compensation may be manual with a

button adjustment on the meter, or it may be automatic

with a optional temperature sensing probe immersed in

the test solution.

5-1 Manual temperature compensation

1)Select the " Function Switch " (3-11, Fig.1) to the " PH

MANUAL. TEMP. " position.

2)Push the " MANUAL Temp. Button " (3-10, Fig.1) first,

then the display will show " 25.0 蚓" for the initial manual

setting temp.

3)Push the " > Button " (3-8, Fig. 1) once will up 0.1 蚓to

the manual setting temperature.

4)Push the " >> Button " (3-13, Fig.1) once will up 1 蚓to

the manual setting temperature.

Push the " >> Button " continuously will up 1 蚓to

setting temperature for every half seconds.

5-2 Automatic temperature compensation

1)Select the " Function Switch " (3-11, Fig.1) to the " PH

AUTO TEMP. " position.

2)Plug in the " Optional Temp. Probe, TP-07 " into the "

Temp. Socket " (3-17, Fig. 1).

3)Place the "Temp. Probe" into the tested solution, then

the PH function will be temperature compensated

automatically.

6. MEASURING PROCEDURE

6-1 PH Measurement

After the instrument and PH electrode are calibrated, then

the unit is now ready for measuring.

1)Connect the combination PH ELECTRODE to the " BNC

socket " (3-15, Fig. 1).

2)Power on the instrument by pushing the " Power

On/Off Button " (3-2, Fig.1).

3)If the operating is under the " Manual temperature

compensation ", then please according the above 5-1

measuring procedures. 7

If the operating is under the " Automatic temperature

compensation ", then please according the above 5-2

measuring procedures.

4)Place the electrode into the measured solution, then the

instrument will display the PH value.

5)After make the measurement, please rinse the electrode

in distilled water.

6-2 mV Measurement

The instrument build in mV(milli volt) measuring

function, letting you make ion-selective, ORP

(oxidation-reduction potential), and other precise mV

measurements.

Select the "Function Switch"(3-11, Fig.1) to the "mV"

position. Then the meter will show the mV values on the

display.

6-3 Temp. Measurement

1)Select the "Function Switch"(3-11, Fig.1) to the

" PH AUTO TEMP. " position.

2)Plug in the " Optional Temp. Probe " into the " Temp. Input

Socket " (3-17, Fig. 1).

3) * If intend to measure the " ", then push the "

button " to select the " " unit.

* If intend to measure the " ", then push the "

button " to select the " " unit.

4)Place the "Temp. Probe" into the tested solution, then

the meter will show the temperature value.

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