EUTECH INSTRUMENTS CYBERSCAN CON 510 CONDUCTIVITY BENCH METER User manual

Instruction Manual
CON 510
Bench Conductivity/TDS Meter
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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.
Copyright © 2002 All rights reserved.
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
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
OO
C F
READY
HOLD
ON
OFF
-8.8.8.8
12
34
5
6
7
8
10
9
11
12
13
14
15
16
17
mS
ppt
ppm
µ S
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
2.2 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
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
4
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
r
Side Metal Bar
Base of
Electrode
Holder

Instruction Manual CON 510
5
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
6
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.

Instruction Manual CON 510
7
4.6 Automatic Calibration (Only for Conductivity)
In the automatic calibration mode, the CON 510 bench meter is capable of accepting either single-point or up to 4 points
for multi-point calibration with maximum of 1 point per specific measurement range using known calibration standards
values which include: 84 µS/cm (0 – 200.0 µS/cm), 1413 µS/cm (0 – 2000 µS/cm), 12.88 mS/cm (0 – 20.00 mS/cm) and
111.8 mS/cm (0 – 200.0 mS/cm).
NOTE: You need to set your desired option i.e. number of calibration points in the SETUP main-menu P5.0 before
performing calibration.
4.6.1 Conductivity Automatic Calibration
1. If necessary, press the MODE key to select conductivity mode.
2. Rinse the probe thoroughly with de-ionized water or a rinse solution, then rinse with
a small amount of calibration standard.
3. Dip the probe into the calibration standard. Immerse the probe tip beyond the upper
steel band. Stir the probe gently to create a homogeneous sample. Allow time for
the reading to stabilize.
4. Press CAL/MEAS to enter conductivity calibration mode. The [CAL] indicator will
appear in the upper right corner of the display.
5. The lower display will scan and lock the closest set calibration values momentarily.
Pressing before the set displayed value being locked will be prompted by an error
message and remain in the calibration mode.
6. Wait for [READY] indicator to appear before pressing ENTER key to confirm
calibration value. The upper display will show “dOnE” once the calibration is
successfully performed. The meter returns to the [MEAS] measurement mode.
7. To abort calibration without confirming, press CAL/MEAS to revert back to
measurement mode. No calibration is performed at this stage.
8. To perform the next point calibration in the multi-point calibration, repeat step 1-7
again until all points have been calibrated if necessary.
MEAS
o
C
A
TC
READY
.
uS
CAL
uS
o
C
ATC
MEAS
.
uS
READY
READY
MODE
CAL
MEAS
ENTER
RANGE
CAL
MEAS

Instruction Manual CON 510
8
4.7 Manual Calibration (Conductivity/TDS)
The meter accepts either single point or multi-point (up to 5 points) manual calibration
with maximum of 1 point per measurement range. Freshly prepare your standards
solution before calibration. Refer to the table in Section 4.1 for more details of the
recommended standards calibration range.
You can offset or manually adjust the Conductivity or TDS reading up to ±40% from its
default setting. If your measured value differs by more than ±40%, clean or replace probe
as needed. Refer to Section 8 for Probe Maintenance.
NOTE: You need to set your desired option i.e. number of calibration points in the
SETUP main-menu P5.0 before performing calibration.
4.7.1 Conductivity Manual Calibration
1. If necessary, press the MODE key to select conductivity mode.
2. Rinse the probe thoroughly with de-ionized water or a rinse solution, and rinse with a
small amount of calibration standard.
3. Dip the probe into the calibration standard. Immerse the probe tip beyond the upper
steel band. Stir the probe gently to create a homogeneous sample. Allow time for the
reading to stabilize.
4. Press CAL/MEAS key to enter conductivity calibration mode. The [CAL] indicator
will appear in the upper right corner of the display.
5. Use MI/▲or MR/▼key to adjust the value on the upper display to match the value
of the calibration standards.
6. Press ENTER to confirm calibration value. The meter returns to the [MEAS]
measurement mode.
7. To abort calibration without confirming, press CAL/MEAS key to revert back to
measurement mode. No calibration is performed at this stage.
9. For single-point calibration the meter automatically reverts back to the measurement
mode.
10. For multi-point calibration repeat steps 2 to 6 for the second to fifth calibration value
in specific measuring ranges. To abort calibration at any calibration points, press
CAL/MEAS once and the meter reverts to measurement mode.
4.7.2 TDS Manual Calibration
The calibration sequence is exactly the same as Conductivity manual calibration. Ensure that you set the correct TDS
factor before calibration. Refer to Section 7.4 for details.
CAL
MEAS
o
C
A
TC
READY
.
uS
uS
CAL
uS
o
C
ATC
MEAS
.
uS
READY
MODE
ENTER
RANGE
CAL
MEAS
CAL
MEAS

Instruction Manual CON 510
9
4.8 Temperature Calibration
The Conductivity electrode (EC-CONSEN91W/ 35608-50) has a built-in temperature
sensor for ATC. The temperature sensor is factory calibrated to the meter. Calibrate
your sensor only if you suspect temperature errors that may have occurred over a long
period of time or if you have a replacement probe.
Temperature Calibration
1. Make sure the electrode is attached to the 6-pin connector.
2. Power the meter on. The [ATC] indicator will appear at the right-hand side of the
LCD to indicate that the temperature sensor is in good working condition. If the ATC
indicator does not light up, see SETUP sub-menu P3.3 to switch it on.
3. Press MODE key to select either conductivity or TDS mode.
4. Press CAL/MEAS to enter either Conductivity or TDS calibration mode. The [CAL]
indicator appears above the upper display.
5. While you are in the Conductivity or TDS calibration mode, press MODE to enter
into Temperature calibration mode. The upper display shows current temperature
reading and the lower display shows the factory default temperature value.
6. Dip the electrode into a solution of known temperature (i.e. a constant temperature
bath). Allow about 3 to 5 minutes for the built-in temperature sensor to stabilize its
measured reading.
7. Adjust using the MI/▲or MR/▼key to set to the correct temperature value (i.e. the
temperature of the constant temperature bath) in increments of 0.1 °C. Maximum
allowable offset temperature value is 5.0 °C.
8. Once you have selected the correct temperature, press ENTER key. To abort or exit
this calibration mode without confirming the temperature calibration value, DO NOT
press ENTER key. Press CAL/MEAS key instead and the meter automatically
reverts back to the measurement mode.
o
C
ATC
CAL
.
o
C
ATC
CAL
.
uS
o
C
ATC
MEAS
uS
READY
.
o
C
CAL
.
.
.
MODE
ENTER
RANGE
CAL
MEAS
CAL
MEAS
MODE

Instruction Manual CON 510
10
5 MEASUREMENT
The CON 510 bench meter measures up to 5 different measurement ranges with auto-ranging capability which
automatically detects and promptly switches to the appropriate range. The meter also allows measurements to be taken
with automatic or manual temperature compensation. The factory default is ATC on.
ATC basically compensates for any temperature variances of measured sample solution temperature automatically from
the normalization temperature set. Default normalization temperature is 25.0 °C (77.0 °F). However if you need to adjust
the default value from 15.0 to 30.0 °C, you may access SETUP sub-menu P3.4 first before measurement.
5.1 Automatic Temperature Compensation
For automatic temperature compensation (ATC) simply plug the conductivity/TDS probe
into the meter. The [ATC] indicator will light on the LCD. Default is ATC “YES”.
NOTE: If the ATC indicator does not light up, manual temperature compensation may be
set in the SETUP sub-menu P3.3. See SETUP sub-menu P3.3 for directions on selecting
ATC or MTC.
To select option either ATC “YES” or “nO”, use either MI/▲or MR/▼key. Press ENTER
to confirm. Otherwise press CAL/MEAS key to abort option selection.
SETUP
o
C
A
TC
.
SETUP
o
C
A
TC
SETUP
o
C
CAL
MEAS
ENTER
RANGE
OR

Instruction Manual CON 510
11
5.2 Manual Temperature Compensation
NOTE: For manual temperature compensation, you must deactivate the ATC mode to ‘nO’ as shown in SETUP sub-
menu P3.3.
5.2.1 Setting a manual temperature compensation value
To set manual temperature compensation value, you need to determine and enter the
desired temperature value into the meter. This value is based on which reading will be
manually temperature compensated. You may select any temperature between 0 and 100
°C (32 to 212 °F). Default value is 25.0 °C.
1. Switch the meter on if necessary. Press MODE to select any measurement mode.
2. If necessary, select ATC to OFF as described in Section 5.1. Note the [ATC] indicator
should not appear on the display.
3. Press CAL/MEAS to enter into either conductivity or TDS calibration mode. The
[CAL] indicator will appear above the upper display.
4. While in Conductivity or TDS calibration mode, press MODE key to enter into
temperature calibration mode. The upper display shows the current temperature
setting and the lower display shows the default value 25.0 °C (77.0 °F) or its last set
temperature value.
5. Check the temperature of your sample solution using an accurate thermometer.
6. Use MI/▲or MR/▼key to offset and match the temperature to the measured value
of the sample solution.
7. Press ENTER key to confirm the set temperature value and the meter returns to the
conductivity or TDS measurement mode.
The meter will now display your newly set temperature value in the lower display and will
compensate Conductivity or TDS readings accordingly based on this set temperature.
NOTE: To exit this program without confirming the manual temperature compensation
value, DO NOT press ENTER key in step 7. Press CAL/MEAS key instead and note that
no change is being made at this stage.
5.3 Taking Measurements
To take readings:
1. Always rinse the probe with de-ionized or distilled water before use and after each sample to remove any impurities
adhering to the probe body. Shake or air dry. To avoid contamination or dilution of your sample, rinse probe with a
small volume of your sample solution.
2. Press ON to switch on the meter and the [MEAS] indicator appears on the top of the LCD.
3. Dip the probe into the sample. Ensure that the solution level is above its upper steel band. Stir the probe gently in
the sample to create a homogenous sample.
4. Allow time for the reading to stabilize. Note the reading on the display.
5. Press MODE to toggle between Conductivity and TDS measurement.
Taking measurements with READY indicator selected on
If the READY indicator has been activated, the [READY] indicator lights whenever the reading has stabilized. You may
switch the READY indicator on or off by following the sequence as described in SETUP sub-menu P3.1.
Taking measurements with the Auto-Hold feature selected on
When a reading has stabilized for more than 5 seconds, the Auto-Hold feature automatically “freezes” the displayed
reading and the [HOLD] indicator appears. Press HOLD once to release the reading. You may deactivate the Auto-Hold
feature as described in SETUP sub-menu P3.1.
o
C
ATC
o
C
A
TC
MEAS
o
C
CAL
.
CAL
.
.
uS
READY
.
.
ENTER
RANGE
MODE
CAL
MEASMODE

Instruction Manual CON 510
12
5.4 Using Manual Ranging Function
Although the CON 510 bench meter has an automatic ranging capability, you may also
manually select any specific measurement range you wish to work on by pressing
RANGE each time for every range.
Range
Indicator
Conductivity
Range
TDS Range
(if TDS factor is 0.5)
r 1 0 – 20.00 µS/cm 0 – 10.00 ppm
r 2 0 – 200.0 µS/cm 0 – 100.0 ppm
r 3 0 – 2000 µS/cm 0 – 1000 ppm
r 4 0 – 20.00 mS/cm 0 – 10.00 ppt
r 5 0 – 200.0 mS/cm 0 – 100 ppt
1. To manually select the desired measuring range, press RANGE key while you are
in the measurement mode. The first range will appear on the display and the
[MEAS] indicator blinks.
2. Press RANGE key again (if needed) until the desired range is selected.
3. To re-select the Auto-ranging function, repeatedly press RANGE key until the
[MEAS] indicator appears without blinking. The display will then scroll through the
various ranges and the Auto-ranging function resumes. Or simply power off and on
again will restart meter into Auto-ranging function as default.
NOTES: If the value of the solution you are measuring is higher than the range
selected, an error message code “Or” will appear on the upper display indicating an
over-range condition. Press RANGE key until the correct range is selected. However the
meter reverts back to the Auto-ranging function once it is powered off.
5.5 HOLD Function
This feature allows you to freeze the displayed reading momentarily when activated in
the measurement mode and the [HOLD] indicator appears on the LCD. To release the
held value, press HOLD again and the [HOLD] indicator disappears. You may continue
to take measurements.
MEAS
MEAS
READY
A
TC
o
C
.
A
TC
o
C
.
MEAS
READY
ATC
o
C
uS
uS
uS
ENTER
RANGE
ENTER
RANGE
ENTER
RANGE
READY
o
C
uS
MEAS
HOLD
.
ATC
HOLD

Instruction Manual CON 510
13
6 MEMORY AND DATA INPUT FUNCTIONS
6.1 Memory Input
The meter’s non-volatile memory can store and recall up to 50 data sets which include
Conductivity and temperature or TDS and temperature. Data sets are retained even if
the power is shut off unless these stored data sets are being overwritten by new ones.
To store a reading:
1. During any measurement mode press MI/▲key to input any data into the memory.
2. MEM, “Sto” and memory location number will be displayed to indicate that the
readings are being stored into meter’s memory at that specific location number. The
meter then returns to the measurement mode.
3. To continue storing data sets, press MI/▲to input subsequent data into memory.
NOTE:
If the memory is full, the first data set value stored will be overwritten to create space for
the new value. Data sets are stored sequentially in the next unoccupied memory
location and cannot be selectively input into specific memory location to be stored.
6.2 Memory Recall
You can access memory recall from any measurement mode only. This function recalls
and displays previous readings being stored in the meter’s memory in “Last-In-First-Out"
sequence. For example the most recent reading stored in location 20 will be displayed
first when memory recall is activated. To selectively view any specific memory location,
use MI/▲or MR/▼to select and press ENTER to view the corresponding data set value
stored in that memory location.
To recall readings:
1. Press MR/▼key once to retrieve the last reading stored. The memory location
screen – MEM, “Loc” and the memory number will flash on the display.
2. Press ENTER to recall the reading stored under that memory number.
3. To view the next memory location, press ENTER key once and the display
automatically moves to the next memory location.
4. Press CAL/MEAS key to revert back to measurement mode if you do not wish to
access memory recall further.
5. If necessary, press MI/▲or MR/▼key to select any specific memory location. Press
ENTER key to view the stored values in that memory location. If there is no data
stored in particular memory location, both upper and lower displays will show “----“.
MEAS
o
C
A
TC
.
MEM
uS
READY
MEM
o
C
A
TC
.
MEM
uS
MEM
MEM
ENTER
RANGE
CAL
MEAS
ENTER
RANGE

Instruction Manual CON 510
14
7 SETUP FUNCTIONS
The setup mode allows you to customize the meter’s setting to your individual preferences. The CON510 meter features
different main program menus and sub-menus which organize individual parameters like a matrix-format.
Details of each main program menu:
1. P1.0: Viewing previous calibration data - all calibrated solutions for each range
2. P2.0: Viewing electrode diagnosis - effective cell constants for each range
3. P3.0: Meter configuration – Ready, Auto-Hold, Temperature unit of measure, ATC or MTC, TDS Factor
4. P4.0: Setting of Temperature Coefficient, Normalization Temperature
5. P5.0: Setting of Automatic or Manual and Single or Multi-point calibration
6. P6.0: Setting of cell constant
7. P7.0: Resetting meter to factory defaults
7.1 SETUP Mode Overview
Press SETUP to enter into the setup mode with [SETUP] indicator on the top left of LCD display. Use the MI/▲and
MR/▼keys to scroll up and down respectively through main menus. At each main menu, press ENTER to enter into a
particular sub-menu to make specific changes from the meter’s default settings. See Addendum 4 for a table of meter
factory default settings.
SETUP
.
P1.0: Viewing Previous Calibration Data
P1.1 First range calibration solution
P1.2 Second range calibration solution
P1.3 Third range calibration solution
P1.4 Fourth range calibration solution
P1.5 Fifth range calibration solution
SETUP
.
P2.0: Viewing Calibrated Cell Constants
P2.1 Effective cell constant for first range
P2.2 Effective cell constant for second range
P2.3 Effective cell constant for third range
P2.4 Effective cell constant for fourth range
P2.5 Effective cell constant for fifth range
SETUP
.
P3.0: Meter Configuration
P3.1 READY indicator On/Off and Auto-Hold On
P3.2 Select °C or °F
P3.3 Select Automatic or Manual Temperature Compensation
P3.4 Setting TDS conversion factor (available in TDS mode)
SETUP
.
P4.0: Temperature
P4.1 Adjusting temperature coefficient
P4.2 Adjusting normalization temperature

Instruction Manual CON 510
15
SETUP
.
P5.0: Mode of Calibration
Selection of Automatic or Manual Calibration
(only in Conductivity mode)
Selection of Single or Multi-point Calibration
SETUP
.
P6.0: Selecting cell constant
Selecting cell constant K: 0.1, 1.0, 10.0
SETUP
.
P7.0: Reset to factory defaults
Reset meter to factory defaults
7.2 P1.0: Viewing Calibration Data
This mode lets you recall previous calibration data of Conductivity/TDS. This is for
viewing only and no changes can be made.
1. From measurement mode, press SETUP key to enter into setup [SETUP] mode.
2. Use MI/▲or MR/▼to scroll through sub-menus until you view main-menu CAL
P1.0 on the display.
3. Press ENTER repeatedly to view all previous calibration data, starting from the first
range till fifth range. The meter will display the calibration value of that particular
range provided calibration is performed. If any of range is not being calibrated the
upper display shows “---“.
4. When you have scrolled through all calibration data, you will automatically return to
the SETUP main-menu P1.0. Press CAL/MEAS key if you wish to return to
measurement [MEAS] mode. Or to exit from viewing of any range in respective sub-
menus, press CAL/MEAS key reverts to the SETUP main-menu P1.0.
NOTE: If you enter into the setup mode from Conductivity measurement mode,
calibration data will be in µS or mS. Similarly if you enter into the setup mode from TDS
measurement mode, calibration data will be in ppm or ppt.
CAL
.
CAL
uS
SETUP
.
SETUP
CAL
.
uS
SETUP
CAL
.
SETUP
ENTER
RANGE
CAL
MEAS
CAL
MEAS

Instruction Manual CON 510
16
7.3 P2.0: Viewing Electrode Diagnosis
Main program 2.0 shows the effective cell constant for each range being calibrated. The
cell constant is adjusted according to your calibration options that let you check the
probe’s parameters for diagnostic purposes.
1. From measurement mode, press SETUP key to enter into setup [SETUP] mode.
2. Use MI/▲or MR/▼key to scroll through sub-menus until you view main-menu ELE
P2.0 on the display.
3. Press the ENTER key repeatedly to view the effective cell constant for each range.
4. When you have scrolled through all calibration data, you will automatically return to
the SETUP main-menu P2.0. Press CAL/MEAS key if you wish to return to
measurement [MEAS] mode.
NOTE: Cell constants of electrode will degrade with time and usage depending on your
maintenance and wear and tear of the electrode being used. You can use this feature to
prompt you the need for a new probe prior to total failure. Recommended value as an
indicator for a replacement of probe is either 0.60 or 1.40 (±40% of 1.000).
7.4 P3.0: Meter Configuration
P3.1: READY indicator and Auto-Hold function
Program P3.1 allows you to select “READY ON”, “READY OFF” and activate the Auto-
Hold function. “READY” indicator is a useful feature that prompts you whenever your
measured reading has stabilized. Once activated you will see [READY] indicator lights
up whenever your readings have stabilized. At this moment, you may depress MI/▲to
store the reading into meter’s memory.
Select “READY OFF” for instantaneous measurement with no [READY] indicator being
lighted up on the display.
You may activate the Auto-Hold function which automatically freezes measured reading
after it has stabilized for more than 5 seconds. Once the display is frozen, the [HOLD]
indicator appears on the display. At this moment, you may depress MI/▲to store the
reading into meter’s memory. Press HOLD once to release the held reading and to
access other functions in the measurement mode. You may deactivate this feature by
selecting either “READY ON/OFF”.
1. From measurement mode, press SETUP key to enter into setup [SETUP] mode.
2. Use MI/▲or MR/▼key to scroll through the sub-menus until you view SETUP
main-menu P3.0 on the display.
3. Press ENTER key to select sub-menu P3.1 with upper display showing “rdY”.
4. Use MI/▲or MR/▼key to select the appropriate configuration you require.
Selecting ON switches the READY indicator on; OFF switches the READY indicator
off; ON and HOLD together switches the Auto-Hold feature on.
5. Press ENTER to confirm selection and to proceed to Program P3.2. If you do not
wish to continue P3.2, press CAL/MEAS to return back to the measurement [MEAS]
mode.
SETUP
SETUP
.
.
READY
.
READY
SETUP
.
READY
ON
OFF
ON
HOLD
SETUP
ENTER
RANGE
CAL
MEAS
ENTER
RANGE
SETUP
.
SETUP
.
SETUP
K=
.
K=
.
.
K=
.
ENTER
RANGE
CAL
MEAS