EUTECH INSTRUMENTS CYBERSCAN CON 510 CONDUCTIVITY BENCH METER Manual de usuario

Instruction Manual

CON 510

Bench Conductivity/TDS Meter

Technolo

ade

68X090820

Rev 2 01/04

Preface

This manual serves to explain the use of the CON 510 bench meter. It functions in two ways, firstly as a step

by step guide to help you to operate the meter. Secondly, it serves as a handy reference guide. It is written to

cover as many anticipated applications of the meter as possible. If there are doubts in the use of the meter,

please do not hesitate to contact the nearest Authorized Distributor.

Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or malfunction to the

meter caused by improper use of the instrument.

The information presented in this manual is subject to change without notice as improvements are made,

and does not represent a commitment on the part of Eutech Instruments Pte Ltd/ Oakton Instruments.

Note: Eutech Instruments Pte Ltd/ Oakton Instruments reserves the right to make improvements in design,

construction, and appearance of our products without notice.

Eutech Instruments Pte Ltd

Oakton Instruments

Rev 2 01/04

TABLE OF CONTENTS

1INTRODUCTION 1

2DISPLAY AND KEYPAD FUNCTIONS 1

2.1 Display 1

2.2 Keypad 2

3PREPARATION 3

3.1 Conductivity Electrode Information 3

3.2 Connecting the probe to the meter 3

3.3 Connecting the AC/DC Adapter 3

3.4 Connecting the Electrode Holder 4

4CALIBRATION 5

4.1 Important Information on Meter Calibration 5

4.2 Preparing the Meter for Calibration 6

4.3 Calibration with Conductivity Standards and TDS factor 6

4.4 Calibration for TDS Standards Directly 6

4.5 Selection of Automatic or Manual Calibration 6

4.6 Automatic Calibration 7

4.7 Manual Calibration 8

4.8 Temperature Calibration 9

5MEASUREMENT 10

5.1 Automatic Temperature Compensation 10

5.2 Manual Temperature Compensation 11

5.3 Taking Measurements 11

5.4 Using Manual Ranging Function 12

5.5 HOLD Function 12

6MEMORY AND DATA INPUT FUNCTIONS 13

6.1 Memory Input 13

6.2 Memory Recall 13

7SETUP FUNCTIONS 14

7.1 SETUP Mode Overview 14

7.2 P1.0: Viewing Calibration Data 15

7.3 P2.0: Viewing Electrode Diagnosis 16

7.4 P3.0: Meter Configuration 16

7.5 P4.0: Temperature 18

7.6 P5.0 Mode of calibration 20

7.7 P6.0 Selecting the cell constant 21

7.8 P7.0: Resetting to factory default settings 22

8PROBE CARE AND MAINTENANCE 23

9TROUBLE SHOOTING GUIDE 24

10 ERROR MESSAGES 24

11 SPECIFICATIONS 25

12 ACCESSORIES 26

13 ADDENDUM 1: CALIBRATION TIPS 27

14 ADDENDUM 2: CALCULATING TDS CONVERSION FACTORS 27

15 ADDENDUM 3: CALCULATING TEMPERATURE COEFFICIENTS 28

16 ADDENDUM 4: METER FACTORY DEFAULT SETTINGS 29

17 WARRANTY 30

18 RETURN OF ITEMS 30

Instruction Manual CON 510

1 INTRODUCTION

Thank you for selecting the CON510 bench meter. This meter is a microprocessor-based instrument that is designed to

offer advanced yet user-friendly features for discerning users - ideal for laboratory and plant applications. It measures

Conductivity, Total Dissolved Solids (TDS) and temperature (oC/oF). It incorporates large memory capacity of up to 50

data sets and user-customisable functions – all are accessible through the membrane tactile keypad. A pull-out

reference card (concealed at bottom of meter) provides a quick handy guide to the functions of the individual keys as well

as useful troubleshooting hints for your reference.

The meter is packaged with a 2-ring Stainless Steel Ultem-body Conductivity/TDS electrode (cell constant K = 1.0) with

built-in temperature sensor (Order Code: EC-CONSEN91W/ 35608-50) and an integral electrode holder. For the list of

accessories refer to the Section 12 on Accessories.

Please read this manual thoroughly before operating your meter.

2 DISPLAY AND KEYPAD FUNCTIONS

2.1 Display

The LCD (Liquid Crystal Display) has an upper and lower display.

The upper display shows the measured conductivity or TDS reading.

The lower display shows the measured temperature.

The display also shows error messages, keypad functions and program functions.

Upper Display

SETUP MEAS CAL MEM

Lower Display

ERR

ATC

C F

READY

HOLD

OFF

-8.8.8.8

ppt

ppm

K =

1. SETup mode indicator 7. parts per thousand indicator (ppt) 13. Calibration solution

indicator

2. MEASurement mode indicator 8. parts per million indicator (ppm) 14. Cell constant indicator

3. CALibration indicator 9. Automatic Temperature Compensation

indicator

15. ON / OFF indicator

4. MEMory mode indicator 10. Temperature scale indicator (oC oF) 16. HOLD indicator

5. millisiemens indicator (mS) 11. ERRor indicator 17. READY indicator

6. microsiemens indicator (µS) 12. Probe indicator

Instruction Manual CON 510

2.2 Keypad

The splash-proof membrane tactile keypad allows easy key entry. Each button, when pressed, has a corresponding

graphic icon or indicator displayed on LCD. Some buttons have several functions depending on its mode of operation.

Key Function

ON/OFF Powers on and shuts off the meter. When you switch on the meter, the meter starts up in the mode

that you last switched off from. For example, if you shut the meter off in TDS measurement mode,

the meter will be in TDS measurement mode when you switch the meter on.

HOLD Freezes the measured reading. To activate, press HOLD while in measurement mode. To release,

press HOLD again.

MODE Selects the measurement parameter. Toggles between conductivity and TDS.

CAL/MEAS Toggles between Calibration and Measurement mode.

NOTE: Temperature calibration is available from conductivity/TDS calibration mode.

ENTER /

RANGE ENTER function: Press to confirm values in Calibration mode and to confirm selections in SETUP

mode.

RANGE function: Press to enter manual ranging function.

The MEAS indicator blinks while in manual ranging function.

MI & MR

▼/▲

In Measurement mode:

Press MI (memory input) to store values with its corresponding temperature values in the memory.

Press MR (memory recall) to retrieve data from memory (Last-In-First-Out Sequence).

In Calibration mode:

Press to scroll through calibration values.

In SETUP mode:

Press to scroll through the setup subgroup program.

SETUP Takes you into the SETUP mode. This mode lets you customize meter preference and defaults, and

view calibration data and select cell constant.

Instruction Manual CON 510

3 PREPARATION

3.1 Conductivity Electrode Information

The CON510 bench meter is supplied with a Conductivity/TDS electrode (with a sturdy locking 6-pin

connector). This Conductivity/TDS electrode (Code No: ECCONSEN91W/ 35608-50) comes with

Stainless Steel rings, cell constant of K = 1.0, and a built-in temperature sensor for Automatic

Temperature Compensation (ATC). Its specially designed Ultem-body housing has good chemical-

resistant properties. It provides fast temperature response and reduces air bubble entrapment,

which makes it easy to obtain accurate, stable readings.

The probe materials used which have good chemical durability include:

1. Polyetherimide (Ultem) – protective probe guard

2. Polybutylterphalate (Valox) – sensor housing

3. Stainless Steel (SS 304) – 2 steel bands

Proper use of probe is essential to ensure that the optimum measurement is taken in a short time.

The removable protective plastic probe guard is meant for simple periodic maintenance and it must

be kept in tact during measurement and calibration.

Always immerse the probe beyond upper steel band.

NOTE: DO NOT remove the protective probe guard during measurement and calibration as it may

affect your readings.

NOTE: We recommend that you do not submerge the probe above the protective probe guard. You

can submerge the cable for brief periods of time, but not continuously.

See Section 8 for “Probe Care and Maintenance” information.

3.2 Connecting the Probe to the Meter

1. Align the notch and 6 pins on the meter with the holes in the 6-pin connector.

Push down and turn the locking ring clockwise to lock into place.

2. To remove probe, turn the locking ring counterclockwise on probe connector

until it is free. Pull probe gently away from the meter.

CAUTION: DO NOT pull on the probe cord or the probe wires might disconnect.

NOTE: Keep connectors clean. Do not touch connector with soiled hands.

3.3 Connecting the AC/DC Adapter

Slide the AC/DC adapter jack into the socket marked DC of the meter until it is firmly seated. Ensure that the power to

the AC/DC adapter is switched off. For AC/DC adapter always ensure that main voltage matches that of the adapter.

AC/DC adapters used should have the following specifications or settings. Output: - Voltage: 9 VDC Current: 500 mA.

NOTE: Ensure that the input main voltage (110/220 V) matches your adapter requirements before connection.

Instruction Manual CON 510

3.4 Connecting the Electrode Holder

The integral electrode holder serves as a handy holder for

a few electrodes or a separate temperature probe during

measurement or when not in use.

This bench meter’s base plate has a side metal bar to

which you can attach an integral swivel electrode holder.

You can mount the electrode holder on either right or left

side of the meter.

To position the electrode arm:

Use a Phillips screwdriver to remove the screw holding the

electrode holder. Slide the side metal bar until the second

screw slot lines up with the original screw hole. Use the

screw removed earlier to secure the electrode holder into

position. Note the side metal bar is reversible. If desired,

remove screw holding electrode holder base and slide out

of brackets, slide base into brackets on opposite side, and

tighten screw.

To install the electrode arm to the meter:

To mount the electrode arm into the metal rod on

the side bar, align the slot with the metal rod and

base of electrode arm. Push it downwards until it

fully sits into position. Avoid using excessive force

when fixing or removing. The electrode arm is ready

for use.

NOTE: Move the base of the electrode holder if you

wish to swing the electrode holder. To prevent the

meter from toppling over causing accidental spills,

DO NOT swing the body of the electrode holder.

Body of

Electrode

Holde

Side Metal Bar

Base of

Electrode

Holder

Instruction Manual CON 510

4 CALIBRATION

4.1 Important Information on Meter Calibration

The CON 510 bench meter allows you to perform automatic calibration (only for Conductivity mode) or manual calibration

(applicable to both Conductivity/TDS mode). The meter can calibrate either single point or multi-point up to 5 calibration

points (manual mode) with a maximum of 1 point in each measurement range. Use single-point automatic calibration

when calibrating using Conductivity standard calibration solutions (as mentioned in Section 4.6) as it suffices.

When calibrating using uncommon or non-standard Conductivity/TDS calibration solutions which are freshly prepared,

use the manual calibration option as it allows you to manually set to the desired value to match the standards being

used. However if you are measuring sample values in more than one range, it is recommended to calibrate each of the

ranges which you are measuring to ensure best meter accuracy.

•If you are measuring in ranges near to or greater than 20 mS (10 ppt if TDS factor is set to 0.5), or near to or

lower than 100 µS (50 ppm), calibrate the meter at least once a week to get specified ±1% Full Scale accuracy.

•If you are measuring in the mid-ranges and you washed the probe in de-ionized water and stored it dry,

calibrate the meter at least once a month.

•If you take measurements at extreme temperatures, calibrate the meter at least once a week.

For best results, select a standard value close to the sample value you are measuring. Alternatively, use a calibration

solution value that is approximately 2/3 the Full-Scale value of the measurement range you plan to use. For example, in

the 0 to 2000 µS/cm conductivity range, a 1413 µS/cm solution is a good solution for calibration.

The following table lists all the corresponding conductivity and TDS ranges. You should calibrate each range using a

suitable standards solution that falls between the values in the “recommended calibration solution range” column.

Range

Indicator

Conductivity

Range

Recommended

Calibration Solution

Range

TDS

Range

Recommended

Calibration Solution

Range

r 1 0 – 20.00 µS/cm 6.00 - 17.00 µS/cm 0 – 10.00 ppm 3.00 - 8.50 ppm

r 2 0 – 200.0 µS/cm 60.0 - 170.0 µS/cm 0 – 100.0 ppm 30.0 - 85.0 ppm

r 3 0 – 2000 µS/cm 600 - 1700 µS/cm 0 - 1000 ppm 300 - 850 ppm

r 4 0 – 20.00 mS/cm 6.00 - 17.00 mS/cm 0 – 10.00 ppt 3.00 - 8.50 ppt

r 5 0 – 200.0 mS/cm 60.0 - 170.0 mS/cm 0 - 100 ppt 30.0 – 85.0 ppt

When you recalibrate your meter, old calibration values are replaced on that specific measurement range. For example,

if you previously calibrated the meter at 1413 µS/cm in the 0 - 2000 µS/cm range and you recalibrate at 1500 µS/cm (in

the same range of 0 - 2000 µS/cm), the meter will replace old calibration data (1413 µS/cm) in that range if the meter is

in the multi-point calibration mode and the meter will retain all calibration data in other ranges. Or else, the calibration

data replaces with new data for all ranges (in single-point calibration mode).

To view calibrated solutions and its corresponding cell constants at respective range, see SETUP main-menus P1.0 and

P2.0.

To completely recalibrate your meter, or when you use a replacement probe, it is best to clear all the calibration data in

the meter’s memory. To erase all the old conductivity and TDS calibration data completely from memory, see SETUP

main-menu P7.0.

Temperature Coefficient: This meter is factory set to a temperature coefficient of 2.1 % per °C. For most applications

this will provide good results. See SETUP sub-menu P4.1 to set the temperature coefficient to different value. See also

Addendum 2, “Calculating Temperature Coefficients” to determine the appropriate temperature coefficient for your

solution.

Instruction Manual CON 510

Normalization Temperature: The factory default value for normalization temperature is 25 °C. If you need to normalize

to a value other than 25 °C, see SETUP sub-menu P4.2.

4.2 Preparing the Meter for Calibration

Before starting calibration, make sure you are in the correct measurement mode. Otherwise press MODE key to toggle

between measurement modes. When you switch on the meter, it starts up in the last unit of measure when you last shut

off the meter.

DO NOT reuse calibration solutions after each calibration has been performed. Contaminants in the solution can affect

the calibration, and eventually the accuracy of the measurements. Use fresh calibration solution each time you calibrate

your meter. Always remember to rinse thoroughly with de-ionized water or a rinse solution after each calibration to

prevent any carry-over.

NOTE: When entering calibration mode, the meter will display the uncalibrated value.

To abort or exit from any calibration mode or SETUP options without confirming any set values, DO NOT press

the ENTER key. Press CAL/MEAS instead. This will retain the meter’s old calibration data in the specific measurement

range or previous SETUP options.

4.3 Calibration with Conductivity Standards and TDS factor

The concentration of salts dissolved in solution increases the conductivity of that solution. This relationship varies from

salt to salt and is roughly linear over a given range for a given salt. The TDS conversion factor is the number used by the

meter to convert from conductivity to TDS. Default is 0.50; allowed window is 0.40 to 1.00.

Instead of calibrating for TDS directly, you can calibrate the CON 510 bench meter by:

1. calibrating to conductivity standards and then

2. entering the appropriate TDS conversion factor into the meter.

To determine the conductivity to TDS conversion factor for your solution:

Addendum 2 lists some commonly used conversion factors.

Addendum 3 describes how to calculate the TDS conversion factor for other solutions.

Enter the TDS conversion factor into your meter as described under SETUP sub-menu P3.4.

4.4 Calibration for TDS Standards Directly

The factory default setting for TDS conversion factor is 0.50. If your solution has a different TDS factor, you can improve

the calibration accuracy by setting the correct TDS factor (0.40 to 1.00) prior to calibration in SETUP sub-menu P3.4.

4.5 Selection of Automatic or Manual Calibration

This meter is capable of performing either automatic for Conductivity measurement mode or manual calibration method

for both Conductivity and TDS measurement modes. In the automatic calibration mode, the meter automatically detects

and verifies the appropriate known calibration standards solutions being calibrated before accepting these particular

calibration standards as one of its calibration values in a specific measurement range. This automatic calibration mode

frees you from cumbersome calibration procedure. While in the manual calibration, non-standards calibration values can

be used for calibration, in which you can manually input the appropriate values as your desired calibration standards in

each specific range.

Proceed to SETUP main-menu P5.0 to select the type of calibration method before performing calibration.

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