LaMotte CON 6 PLUS User manual
1
PREFACE
This manual serves to explain the use of the Conductivity and TDS
handheld meters. The models covered are the CON 6 PLUS and TDS 6
PLUS.
This manual functions in two ways: first as a step by step guide to
operating the meter; second, as a handy reference guide.
This manual is written to cover as many anticipated applications of
the Conductivity and TDS handheld meters as possible. If there are
questions about the use of this meter contact the LaMotte Tech Service
Department.
LaMotte Company will not 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 LaMotte Company.
*WARNING: Reagents marked with an * are considered to be potential
health hazards. To view or print a Safety Data Sheet (SDS) for these
reagents go to www.lamotte.com. Search for the four digit reagent code
number listed on the reagent label, in the contents list or in the test
procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a
printed copy, contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-
Tel: (US, 1-800-255-3924) (International, call collect, 813-248-0585).
WARNING! This set contains chemicals that
may be harmful if misused. Read cautions on
individual containers carefully. Not to be used by
children except under adult supervision.
TABLE OF CONTENTS
1. INTRODUCTION 5
2. GETTING STARTED 6
2.1 Description of Keypad Functions 6
2.2 Description of LCD Annunciators 7
2.3 Inserting & Removing the Rubber Boot/Stand 8
2.4 Inserting New Batteries 8
2.5 Battery Replacement 9
2.6 Electrode Information 9
2.7 Connecting the Probe 10
2.8 Switching the Meter On 11
2.9 Changing Mode 12
3. CALIBRATION 13
3.1 Important Information on Meter Calibration 13
3.2 Preparing the Meter for Calibration 14
3.3 Selection of Auto or Manual Calibration ( CON 6 PLUS) 14
3.4 Using Automatic Calibration ( CON 6 PLUS) 15
3.5 Manual Calibration 16
3.6 Temperature Calibration 17
4. MEASUREMENT 18
4.1 With Automatic Temperature Compensation (ATC) 18
4.2 Without ATC (Manual Temperature Compensation) 18
4.3 Taking Measurements 18
4.4 Using Manual Ranging Function
( CON 6 PLUS, TDS 6 PLUS) 19
4.5 HOLD Function 20
5. ADVANCED SETUP FUNCTIONS 20
5.1 Advanced Setup Overview 20
5.2 Select Cell Constant ( CON 6 PLUS, TDS 6 PLUS ) 22
5.3 Automatic Calibration ( CON 6 PLUS only) 22
5.4 Setting the TDS Factor ( TDS 6 PLUS only) 23
5.5 Temperature Coecient 23
5.6 Normalization Temperature 24
5.7 Single-Point Calibration ( CON 6 PLUS, TDS 6 PLUS ) 24
5.8 Restore Factory Default Values 25
6. PROBE CARE AND MAINTENANCE 25
7. TROUBLESHOOTING 26
8. SPECIFICATIONS / FEATURES 27
9. CONDUCTIVITY THEORY 28
10. CALIBRATION TIPS 31
11. CALCULATING TDS CONVERSION FACTOR 31
12. CALCULATING TEMPERATURE COEFFICIENTS 32
13. REPLACEMENT PARTS AND ACCESSORIES 33
14. WARRANTY 33
15. REPAIRS 34
5
1. INTRODUCTION
The CON 6 PLUS and TDS 6 PLUS microprocessor-based handheld
meters are economical and easy to use. They have a large custom LCD
(Liquid Crystal Display) for clear and easy reading.
The CON 6 PLUS measures conductivity (S/cm or mS/cm) and
temperature (°C) while the TDS 6 PLUS measures total dissolved
solids (TDS) in parts per million (ppm) or parts per thousand (ppt) and
temperature (°C). Each meter measures up to 5 dierent ranges and will
automatically switch to appropriate measuring range.
The meters include a probe (cell constant K = 1.0) with built-in
temperature sensor, rubber boot, 4 alkaline “AAA” batteries and
instruction manual. For additional information, see Section 13 —
REPLACEMENT PARTS AND ACCESSORIES.
Read this manual thoroughly before operating the meter.
6
2. GETTING STARTED
2.1 Description of Keypad Functions
The meter has 6 keys on the splash-proof keypad. Some buttons have
multiple functions depending on the mode of operation.
ON/OFF Powers meter on and o. Meter starts up in the
measurement mode that was last used.
CAL Enters into calibration mode. Pressing while in calibration
mode will abort calibration without confirming value.
MODE Selects desired measurement mode. When pressed
simultaneously with ON/OFF, it will take proceed the
SETUP mode. See ADVANCED SETUP section for more
information.
HOLD Freezes measured reading. Press again to resume live
reading.
ENTER Confirms calibration value in calibration mode and
confirm selections in SETUP mode.
Increments values during calibration mode or scroll
through SETUP. Activates manual ranging function during
conductivity / TDS measurement.
Decrements values during calibration mode.
7
2.2 Description of LCD Annunciators
The meter has a large custom LCD that consists of 4-digit segments plus
annunciators for uS/mS (CON 6 PLUS), ppm/ppt (TDS 6 PLUS), and °C
(temperature).
1. Primary display
2. Parts per million (ppm) or parts per thousand (ppt)
(TDS 6 PLUS)
3. Millisiemens/cm (mS) or microsiemens/cm (S)
indicator (CON 6 PLUS)
4. Temperature indicator
5. Percentage indicator for temperature coecient
6. “LO” = low battery condition
7. “HO” = HOLD function is activated and reading is
frozen
pptm
HO LO %
m
S
μ
1
2
3
4
5
67
C°
8
2.3 Inserting & Removing the Rubber Boot/Stand
1. To remove the meter from the rubber boot, push out the bottom
edge of the meter until it is completely out of the boot. Ensure
that the probe cables are not connected. Figure 1.
2. To insert the meter into the rubber boot, slide in the top of the
meter before pushing the bottom edge of the meter down to set it
into position. Lift up the stand at the back of meter for bench top
applications. Figure 2.
2.4 Inserting New Batteries
The battery compartment is found at the back of the instrument. To open
the battery compartment, push the cover in the direction of the arrow
and lift up. Note the polarity of the batteries before inserting them into
position. After the batteries have been replaced, reposition the cover and
press down until it locks.
Figure 1 Figure 2
9
2.5 Battery Replacement
The “LO” annunciator on the LCD alerts when battery power is running
low.
Caution: Power othe meter before changing battery.
2.6 Electrode Information
The meter includes a probe with a BNC connector
having a nominal cell constant of k = 1.0, and a built-in
temperature sensor. The Ultem-body housing has good
chemical resistant properties. The probe design oers fast
temperature response and reduces air entrapment, ensuring
accurate, repeatable, and stable readings.
The wettable materials of the probe include:
1. Polyetherimide (Ultem) – protective probe guard
2. Polybutylterphalate (Valox) – sensor housing
3. Stainless Steel (SS 304) – 2 steel bands
The protective probe guard can be removed temporarily
for maintenance but must be reattached before
measurement and calibration. Erroneous results will occur
during calibration and measurement if the probe guard is
not used.
Always immerse the probe beyond upper steel band for
best results. Use the fill line on the outside of the probe
guard for reference.
“LO” Battery Condition
LO
S
μ
10
1. DO NOT perform
calibrations or
measurements without the
protective probe guard in
place.
2. Immersion above the
protective guard is not
recommended. The cable
can be submerged briefly
but is not designed for
continuous immersion.
See “Probe Care and Maintenance”
for more information.
2.7 Connecting the Probe
1. To connect the probe, align the connector slots with the posts of
the meter socket and rotate the connector clockwise until it locks.
2. To remove the probe, rotate the connector in anti-clockwise
direction until it unlocks, and slide the connector othe socket.
3. Insert the mini phono jack of the temperature sensor into the
socket on the meter as shown below.
2.5 mm mini phono
jack for
temperature sensor
BNC
connector for
probe
This manual suits for next models
1
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