LaMotte 6 Series User manual
CON 6/TDS 6
Meter Manual
The LaMotte 6 Series
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
CONTENTS
Introduction .............................. 5
Display & Keypad Functions ......................7
Display .................................. 7
Keypad .................................. 8
Preparation ............................... 9
Inserting & Removing Rubber Boot ................... 9
Inserting the Batteries .......................... 9
Battery Replacement ........................... 9
Conductivity Electrode Information .................. 10
Connecting the Probe to Meter ..................... 11
Turning the Meter On.......................... 12
Change Conductivity/TDS «Temperature Measurement Mode . . . 13
Calibration .............................. 14
Important Information on Meter Calibration ............. 14
Preparing the Meter for Calibration ................... 15
Selection of Automatic or Manual Calibration ............. 16
Automatic Calibration (Conductivity) ................. 17
Manual Calibration (Conductivity or TDS) .............. 18
Temperature Calibration ........................ 19
Measurement ............................. 20
With Automatic Temperature Compensation (ATC) .........20
Without ATC (Manual Temperature Compensation) .........20
Taking Measurements .......................... 21
Using Manual Ranging Function .................... 21
HOLD Function ............................. 22
Advanced Set-Up Functions .....................23
Advanced Set-up Overview ....................... 23
Select Cell Constant .......................... 25
Automatic Calibration (for CON 6) .................. 26
Setting the TDS Factor (for TDS 6) .................. 26
Temperature Coefficient ........................ 27
Normalization Temperature ....................... 27
Single-Point Calibration ........................ 28
Restore Factory Default Values ..................... 28
Probe Care and Maintenance .....................29
Trouble-Shooting Guide .......................30
3
Error Messages............................. 31
Specifications ........................... 32-33
Accessories .............................. 34
Conductivity Theory .........................35
Appendix 1: Calibration Tips.....................36
Appendix 2: Calculating the TDS Conversion Factor ........37
Appendix 3: Calculation Temperature Coefficients .........37
Warranty ............................... 38
Return of Items ............................ 39
4
INTRODUCTION
Thank you for purchasing the CON 6 Conductivity Meter or TDS 6 Total
Dissolved Solids Meter. These economy microprocessor-based handheld meters
deliver up to ±0.5% full-scale accuracy. It has a large custom LCD (Liquid
Crystal Display) for clear and easy reading.
The CON 6 measures Conductivity (µS/mS) and Temperature (°C) while the
TDS 6 measures Total Dissolved Solids (TDS) and Temperature (°C). These
sturdy meters measure up to 5 different ranges with auto-ranging capabilities
that that will switch automatically to the appropriate measuring range.
The meters include a conductivity electrode (cell constant K = 1.0) with
built-in temperature sensor, a rubber boot, 4 alkaline “AAA” batteries, and an
instruction manual.
Read the manual thoroughly before operating the meter.
To order other accessories and buffer standard solutions, refer to the
Accessories Section for more information.
5
mS
ON
OFF
HOLD
ENTER
CAL
MODE
CON 6
Conductivity/ Meter
C
°
6
DISPLAY & KEYPAD FUNCTIONS
Display
The meter has a large custom LCD that consists of 4-digit segments and
operation annunciators for uS/mS for the CON 6 meter, or ppm/ppt for the
TDS 6 meter, and °C (Temperature). Other annunciators include “HO”
(when the HOLD function is activated) and “LO” (low battery condition).
See Figure below.
LCD and Customized Annunciators for CON 6/TDS 6 meters
1. Primary display
2. Parts Per Million (ppm) or Parts Per Thousand (ppt)
indicator - TDS 6 meter only.
3. milli-Siemens/cm (mS) or micro-Siemens/cm (µS)
indicator - CON 6 meter only.
4. Temperature indicator
5. Percentage indicator for Temperature Coefficient.
6. Low battery indicator.
7. Hold (freezed) reading indicator.
pptm
HO LO %
mS
µ
1
2
3
4
5
67
C°
7
Keypad
The CON 6 /TDS 6 meter has 6 buttons on the splash-proof keypad; ON/OFF,
HOLD/ENTER, CAL, MODE, and question buttons. Some buttons have
several functions depending on the mode of operation.
Powers on and shuts off the meter. Goes directly
into the measurement mode when the meter is
turned on.
Enters into the calibration mode for
Conductivity/TDS and Temperature.
To abort calibration or set-up mode without
confirming any set value.
HOLD: Freezes the measured reading. To activate,
press HOLD button while in measurement mode. To
release, press HOLD button again.
ENTER: Press to confirm values in the calibration
mode, and to confirm selections in the SET-UP
mode.
In Calibration Mode: Press to scroll through
calibration values.
In Set-up Mode: Press to scroll through the set-up
sub-group programs.
Press button during conductivity measurement
mode to activate manual ranging function. Each
button press will move to a higher conductivity
range.
Selects measurement mode for Conductivity/TDS
and Temperature.
Pressed together with ON/OFF button to go to the
SET-UP mode. This allows customization of meter
preferences such as selecting the electrode cell
constant, normalization temperature, temperature
coefficient factor, TDS factor (for TDS 6), automatic
calibration (CON 6 only) or manual calibration,
single-point or multi-point calibrations, and to reset
meter to factory default.
ON
OFF
CAL
HOLD
ENTER
MODE
8
PREPARATION
Inserting & Removing Rubber Boot
To insert the meter into the rubber boot, slide the top of the meter into the
rubber boot before pushing the bottom edges of
meter down to set it into position. Lift up the
stand at the back of meter for bench top
applications if necessary.
To remove the meter from the rubber boot, first
push the bottom edge of the meter out of the
boot. Ensure that the electrode or temperature
probe cables are not connected.
Inserting the Batteries
The battery compartment is found at the back of instrument as shown. To
open the battery compartment:
1. Remove the rubber boot. Open the
battery compartment. Push in the
direction of arrow and lift up the cover.
2. Insert four AAA batteries. Note the
polarity of battery before inserting into
position.
3. Replace the cover. Press down until it
clicks. Replace the rubber boot.
Battery Replacement
A “LO” annunciator in the LCD will indicate when the battery power is
running low. See Figure below. Replace the
batteries with the same type as recommended
by the manufacturer as soon as possible.
“LO” Battery Condition
Caution: Turn the meter off meter when changing the batteries.
LO
S
µ
9
Conductivity Electrode Information
The CON 6/TDS 6 hand-held meter is supplied with a conductivity/TDS
electrode with a BNC connector. This conductivity/TDS electrode comes with
Stainless Steel rings, a cell constant of K = 1.0, and a built-in temperature
sensor for Automatic Temperature Compensation (ATC).
The specially designed Ultem-body housing has chemically
resistant properties. It provides fast temperature response and
reduces air entrapment, which makes it easy to obtain
accurate, stable readings.
The durable probe materials include:
1. Polyetherimide (Ultem) – protective probe guard
2. Polybutylterphalate (Valox) – sensor housing
3. Stainless Steel (SS 304) – 2 steel bands
Proper use of the probe is essential to ensure that the optimum
measurement is taken in the shortest amount of time.
The protective plastic probe guard is removable for simple
periodic maintenance but it must be kept intact during
measurement and calibration.
Always immerse the probe beyond upper steel band.
NOTE:
1. DO NOT remove the protective
probe guard during measurement
and calibration. It will affect the
results.
2. DO NOT submerge the probe
above the protective guard. The
cable can be submerged for brief
periods of time, but not
continuously.
See – “Probe Care and Maintenance”
for more information.
10
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2
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