MRC CD-4303 Manuale utente

CODUCTIVITY METER

Model : CD-4303

Your purchase of this

PRESSURE METER marks a

step forward for you into

the field of precision

measurement. Although

this PRESSURE 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.

OPERATION MANUAL

3, Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 [email protected]

MRC.2.18

TABLE OF CONTENTS

1. FEATURES..

.................................................................. 1

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

2-1 General Specifications............................................2

2-2 Electrical Specifications..........................................3

3. FRONT PANEL DESCRIPTION......

................................4

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

......................................................4

3-2 Power Off/On button..........................................4

3-3 Data Hold Button.........

......................................4

3-4 / button...............

℃℉ ......................................4

3-5 LCD Contrast Ad

ust...........................................4

3-6 Memory "Record" Button....................................4

3-7 Memory "Call" Button.........................................4

3-8 Factor Button(Temp. Compensation Ad

ust)..

....4

3-9 Ran

e Select Switch...........................................4

3-10 Temp. Compensation Button..

............................4

3-11 Battery Compartment/Cover...............................4

3-12 Input Socket.......................................................4

3-13 RS-232 Output Terminal.....................................4

3-14 Electrode Handle..........

......................................4

3-15 Conductivity Electrode......

..................................4

3-16 Electrode Plu

....................................................4

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

5. ADDITIONAL FEATURES..............................................8

6. CALIBRATION PROCEDURE..........................................9

7. RS232 PC SERIAL INTERFACE................

....................9

8. BATTERY REPLACEMENT.............................................10

1. FEATURES

* Innovative feature with built-in automatic temperature

compensation values adjustable between 0 to 5.0% per .℃

* Selecting "0% per " of Temp. Coefficient Adjust, allows℃

you to take uncompensated conductivity readings.

* Wide automatic temperature compensation

ran

e from 0 to 50 .℃℃

* Carbon rod electrode for long life.

* Microprocessor circuit assures high accuracy and provides

special functions and features.

* Super large LCD display with contrast adjustment for best

viewing angle.

* Dual LCD display, show both conductivity & temp. values.

* Heavy duty & compact housing case.

* Records Maximum, Minimum and Average readings with

RECALL facilities.

* Data hold function.

* Auto shut off prolongs battery life.

* Operates from DC 9V battery, MN1604 (PP3) or equivalent.

* RS 232 PC serial interface.

* Uses durable, long-lasting components, enclosed in a

strong, light weight ABS-plastic housing case.

* Use selectable temperature units, i.e. or .℃℉

* Wide applications: water conditioning, aquariums, beverage,

fish hatcheries, food processing, photography, laboratory,

paper industry, plating industry, quality control, school &

college, water conditioning.

* The portable conductivity meter provides fast, accurate

readings, with digital readability and the convenience of a

remote probe.

2. SPECIFICATIONS

2-1 General Specifications

Circuit Custom one-chip microprocessor LSI

circuit.

Display Dual function display, 13 mm(0.5")

Super large LCD display with contrast

adjustment for best viewing angle.

Measurement Conductivity : 3 ranges

199.9 uS, 1.999 mS, 19.99 mS.

Temperature:

0 - 60 / 32 - 140 .℃℉

Temperature Automatic from 0 to 60 (32 - 140 ),℃℉

Compensation with temperature compensation factor

variable between 0 to 5.0% per C.

Memory Records Maximum, Minimum and Average

Recall readings with RECALL facility.

Power off Manual off by push button or Auto shut off

offer 10 minuite(Not activated during

memory record function).

Data Output RS 232 PC serial interface.

Over load Indicated by "- - - -".

indication

Sampling Time Approx. 0.8 second.

Operating 0 to 50 - main instrument.℃

Temperature 0 to 60 - probe only.℃

Operating Max. 80% RH.

Humidity

Power Supply DC 9V battery, MN1604(PP3) or equivalent.

Heavy duty type.

Power Current Approx. DC 7.8 mA.

Weight 350 g/0.77 LB (included batteries)

Size Main instrument:

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

Probe :

Round, 22 mm Dia. x 120 mm length.

Accessories Instruction manual.....................

1 PC.

Included Sensor probe.............................

1 PC.

carryin

case..............................1 PC.

2-2 Electrical Specifications(23±5 )℃

A. Conductivity

Range Measurement Resolution Accuracy

200 uS 0.1 to 199.9 uS 0.1 uS

2 mS 0.2 to 1.999 mS 0.001 mS ± (2 % F.S. + 1 d)

20 mS 2 to 19.99 mS 0.01 mS * F.S. - Full scale

* uS - micro Simens, mS - milli Simens

B. Temperature

Measuring Range 0 to 60 /32 to 140℃℃℉ ℉

Resolution 0.1 /0.1℃℉

Accuracy 0.8 /1.5℃℉

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display 3-9 Range Select Switch

3-2 Power Off/On button 3-10 Temp. Coefficient

3-3 Data Hold Button Button

3-4 / button℃℉ 3-11 Battery Compartment/

3-5 LCD Contrast Adjust Cover

3-6 Memory "Record" 3-12 Input Socket

Button 3-13 RS-232 Output

3-7 Memory "Call" terminal

Button 3-14 Electrode Handle

3-8 Factor Button 3-15 Conductivity Electrode

(Temp. Coefficient 3-16 Electrode Plug

Adjust) Electrode

4. MEASURING PROCEDURE

4-1 Conductivity measurement

(1) Push the "Power Off/On Button"(3-2, Fig. 1) to power the

instrument.

(2) The instrument will default to 2% per Temperature℃

Compensation factor. The meter has built-in Automatic

Temperature Compensation adjustable between 0 to 5%

per .℃

In order to change the default value carry out the

following procedures :

a. Push the "Temp. Compensation Button"(3-10, Fig.1)

,the display will show

2.0 %

P℃

b. Push the "Factor Adjust Button"(3-8, Fig. 1) to select

the desired compensation factor. The value will

increment in steps of 0.1 % per .℃

c. Once the desired value is reached, push the "Temp.

Compensation Button"(3-10, Fig. 1) to set the new

value.

(3) Select the applicable range, using the "Range Select

Button"(3-9, Fig. 1).

* If the display shows "- - - -", it indicates an overload

condition, select the next higher range.

* If the display shows "_ _ _ _", it indicates an

out-of-range condition, select the next lower range.

(4) Immerse the "Conductivity Electrode "(3-15, Fig. 1)

into the solution, up to the immersion level.

(5) During the measurement, the lower LCD Display will

show the temperature of the solution.

* Push the " / Button"(3-4, Fig. 1) to change℃℉

the temperature display unit from " to "℃℉

or " to ".℉℃

4-2 Data Hold

* During measurement, pushing the "Data Hold

Button"(3-3, Fig. 1) will hold the display values &

the LCD will show the "D.H" symbol.

* To cancel the Data Hold function, Press the Data

Hold Button, once more.

4-3 Data Record( Max., Min., Average reading)

* The DATA RECORD function displays the

maximum, minimum and average readings. To start

the DATA RECORD function, press the "Record

Button"(3-6, Fig. 1) once. "REC" symbol will appear

on the LCD display.

* With the "REC" symbol indicated on the display

(a) Push the "CALL Button"(3-7, Fig. 1) once,

then the "Max" symbol with the maximum values

recorded will appear on the LCD display.

(b) Push the "CALL Button" once again, the "Min"

symbol with the minimum values recorded will

appear on the LCD display.

symbol with the average values will appear on

the LCD display.

(d) To de-activate the Data Record function, Press

the "Record Button" (3-6, Fig. 1) once again.

All associated anunciators will disappear from the

display.

4-4 For quick measurement, follow the procedures

shown below :

Main procedures

Chan

e Select the desired

POWER the default ran

emperature

Compensation Select or℃℉

Factor, if

required

ake Measurement

Optional measurin

procedures

DATA HOLD MEMORY RECORD RS232 OUTPUT

Max., Min. AVG

Power mana

ement

AUTO POWER OFF or MANUAL POWER OFF

(Not activated under memory record function

durin

Memory

Record Selection)

5. ADDITIONAL FEATURES

(a) The instrument has built-in "Auto Power Shut-off"

in order to prolong battery life. The meter will switch

off automatically if none of the buttons are pressed

within 10 min.

To de-activate this feature, Select the memory record

function during measurement, by pressing the

"RECORD" button(3-6, Fig.1).

(b) The instrument also features the ability to adjust the

contrast of the display.

This is achieved by controlling the "LCD Contrast

Adjust" pot (3-5, fig. 1).

6. CALIBRATION PROCEDURE

The meter has been calibrated during manufacture.

However, it may be necessary to re-calibrate periodically.

Particularly if the instrument is used foe a long period or if

the conductivity electrode is changed.

To re-calibrate the instrument, follow the procedures

shown below :

(1) Prepare a " 1.413 mS Calibration Solution ".

(2) Slide the " Range Select Switch "(3-9, Fig. 1) to "2 mS"

position.

(3) Immerse the " Conductivity Electrode "(3-5, Fig. 1)

into the solution up to the immersion level.

(4) Adjust the " Calibration Adjust Pot "(VR4, Fig. 2),

located within the battery compartment, until the display

indicates the value of the calibration solution.

FRONT PANEL

VR VR VR VR VR

12 346 Fi

. 2

battery compartment

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