Instruction Manual
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sales@novatech-usa.com
www.novatech-usa.com
Tel: (866) 433-6682 Fax: (866) 433-6684
Tel: (281) 359-8538 Fax: (281) 359-0084
CON 700 Conductivity/ºC/ºF Bench Meter
Part of Thermo Fisher Scientific 68X541702 Rev. 1 Jan 2010
Tech nol o
adeEa
TABLE OF CONTENTS
1. INTRODUCTION.............................................................. 1
2. GETTING STARTED........................................................ 2
2.1 Keypad Functions ...................................................................2
2.2 LCD Annunciators ................................................................... 3
2.3 Meter Connections .................................................................. 3
3. ELECTRODE INFORMATION......................................... 4
4. CALIBRATION................................................................. 4
4.1 Automatic or Manual Calibration ............................................. 4
4.2 Single or Multi-Point Calibration.............................................. 5
4.3 General Calibration Tips .........................................................6
4.4 Automatic Conductivity Calibration Procedure ........................ 6
4.5 Manual Conductivity & TDS Calibration Procedure................. 7
4.6 Temperature Calibration .........................................................7
5. MEASUREMENT.............................................................. 7
5.1 Taking Measurements............................................................. 7
5.2 Automatic and Manual Ranging .............................................. 8
5.3 HOLD Function .......................................................................8
5.4 Storing and Recalling Data .....................................................8
6. SETUP FUNCTIONS........................................................ 9
6.1 P1.0 CAL (Calibration) ............................................................9
6.2 P2.0 ELE (Electrode Information)............................................ 9
6.3 P3.0 ConF (Configuration) ......................................................9
6.4 P3.1 rdY (Ready / Stability Indicator) ...................................... 9
6.5 P3.2 ºC ºF (Celcius Or Fahrenheit) ......................................... 10
6.6 P3.3 AtC (Automatic Temperature Compensation) ................. 10
6.7 P3.4 tdS (Total Dissolved Solids factor).................................. 10
6.8 P3.5 t.CO (Temperature Coefficient)....................................... 10
6.9 P3.6 t.nr (Normalization Temperature in ºC) ...........................11
6.10 ACAL (Automatic Conductivity Calibration)............................. 11
6.11 SPC (Single Point Calibration) ................................................ 11
6.12 CELL (Nominal Cell Constant) ................................................ 11
6.13 P4.0 rSt (Reset) .....................................................................12
6.14 P5.0 CLr (Clear Memory) ....................................................... 12
7. CALCULATING TDS CONVERSION FACTOR.............. 13
8. CALCULATING TEMPERATURE COEFFICIENTS........ 14
9. REPLACEMENTS AND ACCESSORIES........................ 15
10. TROUBLESHOOTING GUIDE......................................... 16
11. SPECIFICATIONS............................................................ 17
12. WARRANTY..................................................................... 18
13. RETURN OF ITEMS......................................................... 18
1. INTRODUCTION
Thank you for purchasing our Con 700 series benchtop meter.
This microprocessor-based meter is economical and simple to
use. The design incorporates a large LCD for clear viewing, yet
offers a small footprint to conserve space.
The CON 700 measures conductivity or TDS, and temperature
(ºC or ºF) simultaneously.
Each meter includes a convenient slide-out card for quick
reference.
Some configurations include an electrode arm and metal
bracket which can be easily attached to the left or right side of
the meter according to your preference.
The CON 700 series benchtop meter replaces our popular CON
510 series meter that was introduced in 2002.
We take great pride in every instrument we manufacture
and hope this one serves you well.
1
2. GETTING STARTED
2.1 Keypad Functions
Powers the meter on and off. Upon power on, the meter
automatically begins in the mode that was last used.
Calibration and memory values are retained even if meter
is unplugged.
Toggle between available measurement modes—
Conductivity with Temperature or TDS with Temperature.
Also used to switch to Temperature calibration during
Conductivity or TDS calibration mode.
Press and hold for 5 seconds to enter SETUP mode.
Toggles between measurement and calibration modes.
In SETUP mode, returns user to the measurement mode.
Confirms calibration values in CAL mode.
Confirms selections in SETUP mode.
Changes range and resolution in MEAS mode.
View recalled values in memory mode.
MI (Memory Insert) stores values into memory.
Increase value. Scroll up in SETUP & CAL modes.
MR (Memory Recall) recalls values from memory
Decrease value. Scroll down in SETUP & CAL modes.
Freezes measured reading. Press again to resume
live reading.
2
2.2 LCD Annunciators
2.3 Meter Connections
CON/
Temp
DC
8-pin DIN connection for 2-cell Con/TDS/Temp electrode
Power supply
3
3. ELECTRODE INFORMATION
The CON700 includes an electrode with a nominal cell constant of
k = 1.0, built-in temperature sensor, and 1 meter cable. The Ultem
body housing has good chemical resistant properties. The
electrode design offers fast temperature response and reduces air
entrapment, ensuring accurate, repeatable, and stable readings.
he wetted materials of the probe include:
T
Polyetherimide (Ultem) – protective probe guard
Polybutylterphalate (Valox) – sensor housing
Stainless Steel (SS 304) – 2 bands
The protective probe guard can be removed temporarily for
cleaning however it must be re-attached during measurement and
calibration. Erroneous results will occur while the probe guard
is removed.
Always immerse the probe beyond upper steel band for best
results. Use the fill line on the outside of the probe guard for
reference.
4. CALIBRATION
4.1 Automatic or Manual Calibration
The CON 700 is capable of automatic or manual calibration for
conductivity, and manual calibration for TDS.
In the automatic calibration mode, the meter will automatically select
one of (4) conductivity calibration standard values depending o
range and normalization temperature being used (TABLE 1).
If you only use calibration standards that are listed in TABLE 1,
automatic calibration is recommended. If you intend to calibrate with
one or more standards that are not listed in
must be set for manual calibration instead.
TABLE 1, the CON 700
n the
4
The factory default is automatic conductivity calibration. See Section
6.10 to change this setting. There is no automatic calibration value
available for conductivity range 1.
TABLE 1
Automatic Calibration Values
Range # Conductivity
Range
r 1 0.00 – 20.00 μS None None
r 2 20.1 – 200.0 μS 84 μS 76 μS
r 3 200.1 – 2000 μS 1413 μS 1278 μS
r 4 2.01 – 20.00 mS 12.88 mS 11.67 mS
r 5 20.1 – 200.0 mS 111.8 mS 102.1 mS
Normalization Temperature
25 ºC 20 ºC
Range
#
r 1 0 – 10.00 ppm none
r 2 10.1 – 100.0 ppm
r 3 101 – 1000 ppm
r 4 1.01 – 10.00 ppt
r 5 10.1 – 100 ppt
4.2 Single or Multi-Point Calibration
Use Single-Point Calibration to apply a single calibration value across
all ranges.
Use Multi-Point Calibration for individual calibration in each range. This
will restrict an individual calibration so that it is applied to one range
only. When using multi-point calibration, perform a calibration in each
range that you expect to use for best results.
TDS Range
(using 0.5 TDS factor)
Automatic Calibration
Values
none
none
none
none
5
The factory default is Single-Point Calibration. See Section 6.11 to
change this setting.
4.3 General Calibration Tips
or best results, periodic calibration with known accurate standards is
F
recommended. A maximum of one calibration point per range can be
performed. If multiple calibration points are used in the same range,
the most recent one will replace the previous one.
When the electrode is replaced, it is best to clear the calibration to the
factory default values (see Section 6.13).
Rinse or immerse the probe before calibration and between samples
with clean water (deionized water is ideal).
The CON 700 has non-volatile memory which will retain all calibration
values, as well as meter settings and memory values upon meter shut
down or unexpected power loss.
To protect from erroneous calibrations, the allowable tolerance is ±40%
of the factory default value.
Low conductivity standard solutions (less than 20 µS) are unstable and
are very temperature dependent. As a result, reproducible calibration
results are challenging in lowest measurement range #1 (0.00 to 20.0
µS).
4.4 Automatic Conductivity Calibration Procedure
1) Press
2) Dip the electrode into the conductivity standard and press .
Provide stirring for best results.
3) The primary display will show the factory default value, while the
secondary display will lock on the appropriate automatic standard
value from TABLE 1.
4) When the READY indicator appears, press
primary reading will flash briefly before returning to measurement
mode upon successful calibration.
as needed to select conductivity (μS or mS).
to accept. The
6
4.5 Manual Conductivity & TDS Calibration Procedure
1) Press as needed to select conductivity (μS or mS) or TDS
(ppm or ppt) calibration.
2) Dip the electrode into the calibration standard and press
.
Provide stirring for best results.
3) The primary display will show the current reading, while the
secondary display will be the factory default value. Adjust the
temperature reading using
or . Press to accept. The
primary reading will flash briefly before returning to measurement
mode upon successful calibration.
4.6 Temperature Calibration
T
he thermistor sensor used for automatic temperature compensation
and measurement is accurate and stable, so frequent calibration isn’t
required. Temperature calibration is recommended upon probe
replacement, whenever the temperature reading is suspect, or if
matching against a certified thermometer is desired.
1) Place the probe into a solution with a known accurate temperature
such as a constant temperature bath.
2) Press
followed by . The primary display shows the
measured temperature while the secondary display shows the
factory default temperature.
4) Adjust the temperature using
to cancel. The meter allows an adjustable maximum value of ± 5
(or ± 0.9
º
F) from the factory default temperature.
or . Press to accept or
º
5. MEASUREMENT
C
5.1 Taking Measurements
1) Rinse the electrode with de-ionized or distilled water before use
to remove any impurities. Gently shake excess water droplets.
7
2) Dip the probe into the sample beyond the upper steel band
(utilize the fill line on the outside of the probe guard for
reference).
3) Allow time for the reading to stabilize. Note the reading on the display.
The clear yellow protective probe guard must be attached during
measurement. Erroneous results will occur while the probe guard is
removed.
5.2 Automatic and Manual Ranging
The CON 700 automatically selects the optimum range in which your
readings appear. Refer to TABLE 1 for a list of the available ranges.
To turn-off automatic ranging, press
. MEAS will flash, indicating
that manual ranging is active. To manually select the next range,
press again. After range 5, automatic ranging is resumed.
For example, a reading of 465 μS will automatically settle in range 3.
Using manual range advancement this will read as 0.47 mS in range 4,
and 0.5 mS in range 5. For best resolution, use auto-ranging.
5.3 HOLD Function
F
or prolonged observation of a reading, press
during
measurement mode to freeze the display. The “HOLD” indicator will
display when the reading is held. To release the held value and
resume measurement, press
memory by pressing
.
again or insert the held value into
5.4 Storing and Recalling Data
The CON 700 can retain up to 100 data points into memory for
later retrieval.
1) In the measurement mode, press
to insert the measured value
into memory. The stored memory location value (StO) is briefly
displayed.
8
2) To recall data from memory, press . The location of the most
recent stored data is displayed first. Press or to select the
location of the desired data, then press
3) Press
to measurement mode. To erase stored data, see Section 6.14.
to return to the stored data location. Press to return
to accept.
6. SETUP FUNCTIONS
Use the set up mode to customize your instrument operation. During
measurement, press and hold
mode.
or to change programs or change options. Press
Press to select the program or confirm selection.
Press
6.1 P1.0 CAL (Calibration)
6.2 P2.0 ELE (Electrode Information)
6.3 P3.0 ConF (Configuration)
6.4 P3.1 rdY (Ready / Stability Indicator)
to go back one level or return to measurement mode.
Press
Press
Press
to view stored calibration points in each range.
to view cell efficiency in each range.
to access set-up programs 3.1 thru 3.9.
for 5 seconds to enter SETUP
Press
Press or
Auto HOLd.
.
to choose READY “On”, READY “OFF”, or
9
Press to confirm.
6.5 P3. (C hrenheit) 2 ºC ºF elcius Or Fa
Press
Press or to select ºC or ºF.
Press to
6.6 P3. perature Compensation)
6.7 P3. ot Solids factor)
6.8 P3.5 t.CO (Temperature Coefficient)
T
degree temperature (% per ºC). The CON 70
temperature coefficient of 2.1 % per ºC. For m
provide good results. The meter allows adjustment from 0.0 to 10.0.
TIP: Select 0.0% for uncompensated measurements. The temperature
will be measured by the electrode and displayed in measurement
mode—without compensation.
See Section 8 – Calculating Temperature Coefficients.
3 AtC (Automatic Tem
Press
Press or to select “Yes” or “No”.
Press
4 tdS (T al Dissolved
ress
P
Press or to select the desired TDS factor (.40 to
1.00).
Press
he temperature coefficie ount of change in conductivity per
.
confirm.
.
to confirm.
.
to confirm.
nt is the am
0 is factory set to a
ost applications this will
10
Press .
Press or to select the desired value (0.00 to 10.0).
to confirm. Press
6.9 P3.6 t.nr (Normalization Temperature in ºC)
W
hen Au
tomatic Temperature Compensation is used, measurements
are adjuste the temp coefficient to the normalization
tempera s 25 ºC.
6.10 ACAL (Automatic Conductivity Calibration)
See Sec
6.11 SP le int Calibration)
See Sec
d by erature
re. The default value itu
Press .
Press or to select the desired value (15.0 to 30.0).
Press to confirm.
Press .
Press or to select “Yes” (Automatic) or “No” (Manual).
Press to confirm.
C (Sing Po
tio
n 4.2 for details on Single Point & Multi Point Calibration.
Press .
n. tion 4.1 for more details on Automatic Conductivity Calibratio
Press or to select “Yes” (Single) or “No” (Multi).
Press to confirm.
6.12 CELL (Nomin Cell Constant)
The CON 700 inclu 1.0.
Use probes with k = 0.1 and 10 (sold separately) for improved
al
des a probe with a nominal cell constant (k) of
11
performa ce in extreme sample ranges. Use this setup function to
change the cell constant if necessary. M
included probe.
k = 0.1 ideal for low measurements <20 µS (<10 ppm).
k = 1.0 ideal for mid-range measurements
k = 10 ideal for high measurements >20 mS (>10 ppt).
n
eter default is 1.0 to match the
Press
Press or to select 0.1, 1.0, or 10.0
Press to confirm.
.
6.13 P4.0 rSt (Reset)
Press .
or Press to select “Yes” (Reset) or “No” (Cancel).
If “Yes”, press
r “F (complete reset to factory default settings). only) o Ct”
Press
6.14 P5.0 CLr (Clear Memory)
Press
Press or to select “Yes” (Erase memory) or “No”.
Press
to confirm.
.
to confirm.
or to select “Cal” (calibration reset
12
7. CALCULATING TDS CONVERSION FACTOR
You can calibrate TDS using the value of the calibration standard solution
at a standard temperature such as 25 ºC. To determine the conductivityto-TDS conversion factor use the following formula:
Factor = Actual TDS ÷ Actual Conductivity @ 25 ºC
Actual TDS: Value from the solution bottle label or as a
standard made using high purity water and precisely weighed
salts.
ppm = milligram of salt(s) per liter of water = mg/L
ppt = gram of salt(s) per liter of water = g/L
Actual Conductivity: Value measured using a properly
calibrated Conductivity/Temperature meter.
Both the Actual TDS and the Actual Conductivity values must be in the
same magnitude of units. For example, if the TDS value is in ppm the
conductivity value must be in µS; if the TDS value is in ppt the conductivity
value must be in mS.
Check your factor by multiplying the conductivity reading by the factor in
the above formula. The result should be in TDS value.
When the TDS factor is set to 1.0, Conductivity = TDS.
13
8. CALCULATING TEMPERATURE COEFFICIENTS
To determine the temperature coefficient of your sample solution use this
formula:
Where:
tc = Temperature coefficient 25 = 25 ºC
C
= Conductivity at Temp 1 CT2 = Conductivity at Temp 2
T1
T1 = Temp 1 T2 = Temp 2
NOTE: A controlled temperature water bath is ideal for this procedure.
1. Immerse the probe into a sample of your solution and adjust the
temperature coefficient to 0% (that is, no compensation) by following
instructions as described in Section 6.8.
2. Wait for 5 minutes. Note T1 and CT1 (conductivity at T1).
3. Condition the sample solution and probe to a temperature (T2) that is
about 5 ºC to 10 ºC different from T1, and note the conductivity
reading C
.
T2
NOTE: Record your results for future reference. Ideally T1 and T2 should
bracket your measurement temperature, and should not differ by
more than 5 ºC.
4. Calculate the temperature coefficient of your solution according to the
formula shown above.
5. Enter the calculated temperature coefficient into the meter.
The calculated temperature coefficient will now be applied to all the meter
readings.
14
9. REPLACEMENTS AND ACCESSORIES
Item Description
CON 700 Benchtop with electrode and
integral stand,100/240 VAC
Replacement electrode, k = 1.0 CONSEN9501D 35608-74
Epoxy/platinum electrode, k = 0.1 - 35608-72
Glass/platinum electrode, k = 1.0 - 35608-76
Epoxy/platinum electrode, k = 10.0 - 35608-78
SMPS, 100/240 VAC, 9V, 6W power
adapter
10 μS, (20) x 20mL Sachets ECCON10BS 35653-09
84 µS, 480 mL bottle* ECCON84BT 00653-16
100 μS, 480 mL bottle ECCON100BT -
447 μS, 480 mL bottle ECCON447BS 00653-47
500 μS, 480 mL bottle ECCON500BT -
1413 μS, 480 mL bottle* ECCON1413BT 00653-18
1413 μS, (20) x 20mL Sachets* ECCON1413BS 35653-11
2764 μS, 480 mL bottle ECCON2764BT 00653-20
2764 μS, (20) x 20mL Sachets ECCON2764BS 35653-12
5.0 mS, 480 mL bottle ECCON5000BT -
12.88 mS, 480 mL bottle* ECCON1288BT 00606-10
15 mS, (20) x 20mL Sachets ECCON15000BS 35653-13
111.8 mS, 480 mL bottle* ECCON1118BT -
Part number Ordering Code
Eutech Instruments Oakton Instruments
ECCON70043S 35411-00
60X030130 35615-07
*Automatic Calibration Standard Value at 25 ºC
15
10. TROUBLESHOOTING GUIDE
PROBLEM CAUSE SOLUTION
No display Main power not switched
“Ur” (Under
range)
“Or” (Over
range)
in primary or
secondary
display
Slow
response
Meter not
responding to
key press
Secondary
display
continually
scrolls
on. AC Adapter socket not
inserted properly.
Measured value is out
of range.
Electrodes not connected.
Electrode clogged, dirty
or broken.
Meter not calibrated.
Wrong temp value.
Dirty electrode.
Temperature of sample is
changing.
Manual HOLD or Auto
HOLD is active.
Worn keypad.
Invalid key; Button is not
functional in the current
operation mode.
Conductivity calibration
standard is not within 40%
of expected value during
automatic calibration.
a) Switch on the power supply.
b) Re-insert AC Adapter.
Check electrode is connected.
Clean or replace electrode.
Recalibrate the meter.
Confirm measurement condition.
Treat samples to bring within
meter measuring range.
Reset meter.
Clean the electrode.
Allow temperature to stabilize.
Press
HOLD. See Section 6.4 to disable
Auto Hold feature if enabled.
Contact Technical Service.
Press alternate key.
Select valid key depending on
current mode.
Ensure electrode guard has not
been removed.
Use fresh or different calibration
standard.
to deactivate manual
16
11. SPECIFICATIONS
Conductivity
Range
TDS Range
(0.5 TDS factor)
Resolution 0.05 % Full Scale
Accuracy ±1% Full Scale
Temperature
Range (Meter)
Compensation
Type & Range
Resolution
Accuracy
Calibration
Coefficient
Normalization
Cell Constant 0.1, 1.0, 10.0 (selectable)
TDS Factor 0.40 to 1.00 (adjustable)
Calibration points
Auto-ranging Yes
Hold Function Yes
Memory 100 data sets
Input 8-pin DIN
Power AC/DC 9V, 6W Adapter (100/240 VAC, 50-60Hz)
Dimensions (mm) meter only = 175 (L) x 155 (W) x 69 (H)
0 to 10.00, 100.0 ppt
0.0 to 80 ºC / 32.0 to 176.0 ºF with supplied cell
Offset in 0.1 º increments; Offset range: 5 ºC / 9 ºF
0 to 20.00, 200.0, 2000 µS
0 to 20.00, 200.0 mS
0 to 10.00, 100.0, 1000 ppm
(max 200.0 ppt @ 1.0 TDS factor)
0.0 to 100.0 ºC / 32.0 to 212.0 ºF
Automatic with supplied cell or Manual.
0.0 to 100 ºC / 32.0 to 212.0 ºF,
0.1 ºC / ºF
± 0.5ºC / ± 0.9ºF
0.0 to 10.0% per ºC
15.0 to 30.0 ºC (adjustable)
Automatic (4 points); Maximum 1 per range
Manual (5 points); Maximum 1 per range
17
12. WARRANTY
This meter is supplied with a warranty against significant deviations in
material and workmanship for a period of THREE years from date of
purchase whereas probe with a SIX month warranty.
If repair or adjustment is necessary and has not been the result of abuse
or misuse within the designated period, please return – freight prepaid –
and correction will be made without charge. Eutech Instruments/Oakton
Instruments will determine if the product problem is due to deviations or
customer misuse.
Out of warranty products will be repaired on a charged basis.
The warranty on your instrument shall not apply to defects resulting from:
Improper or inadequate maintenance by customer
Unauthorized modification or misuse
Operation outside of the environment specifications of
the products
13. RETURN OF ITEMS
Authorization must be obtained from our Customer Service Department or
authorized distributor before returning items for any reason. A “Return
Goods Authorization” (RGA) form is available through our authorized
distributor. Please include data regarding the reason the items are to be
returned. For your protection, items must be carefully packed to prevent
damage in shipment and insured against possible damage or loss.
Eutech Instruments will not be responsible for damage resulting from
careless or insufficient packing. A restocking charge will be made on all
unauthorized returns.
NOTE: Eutech Instruments Pte Ltd /Oakton Instruments reserve the right
to make improvements in design, construction, and appearance of
products without notice.
18
sales@novatech-usa.com
www.novatech-usa.com
Tel: (866) 433-6682 Fax: (866) 433-6684
Tel: (281) 359-8538 Fax: (281) 359-0084
For more information on our products, please contact our channel
partner or visit our websites listed below:
Oakton Instruments
625 E Bunker Court
Vernon Hills, IL 60061
USA
Tel: (1) 888-462-5866
Fax: (1) 847-247-2984
info@4oakton.com www.4oakton.com
Distributed by:
Part of Thermo Fisher Scientific
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