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Summary of Contents for LaMotte CON 6 PLUS
- Page 3 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: fi rst as a step by step guide to operating the meter;...
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Page 4: Table Of Contents
4.5 HOLD Function ADVANCED SETUP FUNCTIONS 5.1 Advanced Setup Overview 5.2 Select Cell Constant ( CON 6 PLUS, TDS 6 PLUS ) 5.3 Automatic Calibration ( CON 6 PLUS only) 5.4 Setting the TDS Factor ( TDS 6 PLUS only) 5.5 Temperature Coeffi... -
Page 5: Introduction
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 (μS/cm or mS/cm) and temperature (°C) while the TDS 6 PLUS measures total dissolved... -
Page 6: Getting Started
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. Powers meter on and off . Meter starts up in the ON/OFF measurement mode that was last used. -
Page 7: Description Of Lcd Annunciators
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). HO LO ° μ pptm Primary display Parts per million (ppm) or parts per thousand (ppt) (TDS 6 PLUS) Millisiemens/cm (mS) or microsiemens/cm (μS) -
Page 8: Inserting & Removing The Rubber Boot/Stand
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. -
Page 9: Battery Replacement
2.5 Battery Replacement The “LO” annunciator on the LCD alerts when battery power is running low. Caution: Power off the meter before changing battery. μ “LO” Battery Condition 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. -
Page 10: Connecting The Probe
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 briefl y but is not designed for continuous immersion. See “Probe Care and Maintenance” for more information. -
Page 11: Switching The Meter On
1. The fi rst screen will show the model [Con6] [tdS6]. 2. The second screen will show the nominal cell constant value. The CON 6 PLUS and TDS 6 PLUS meters can accept electrodes with k = 0.1, 1.0 or 10.0 nominal cell constants. -
Page 12: Changing Mode
TDS 6 PLUS ° pptm pH % ° ° μ pptmV Measurement Mode 2.9 Changing the Mode To switch between conductivity or TDS measurement mode and temperature measurement mode, press the MODE key. The annunciator will indicate the measurement mode. Annunciator °... -
Page 13: Calibration
3. CALIBRATION 3.1 Important Information on Meter Calibration The CON 6 PLUS and TDS 6 PLUS have fi ve measuring ranges listed below. Each range can be calibrated to one point per range (fi ve total points if each range is calibrated). Calibration is recommended for each range that will be utilized. -
Page 14: Preparing The Meter For Calibration
Deionized water is ideal. 3.3 Selection of Auto or Manual Calibration (CON 6 PLUS) The CON 6 PLUS is capable of automatic or manual calibration. The factory default setting is automatic. In the automatic calibration mode, the CON 6 PLUS will automatically select one of four calibration standard values (see below) depending on the range and normalization temperature being used. -
Page 15: Using Automatic Calibration (Con 6 Plus)
3.4 Using Automatic Calibration (CON 6 PLUS) In Automatic Calibration mode, the CON 6 PLUS can accept up to 4 calibration points with a maximum of 1 point per measurement range. Note: Values in the 0.00 to 20.00 μS/cm range cannot be calibrated in Auto Calibration mode. -
Page 16: Manual Calibration
message “Err 1” will be indicated and the meter will return to the measurement mode. For example, a 40% tolerance of a 1413 μS/cm standard is 848 μS/cm to 1978 μS/cm. • If the measured temperature (°C) of the calibration solution is below 0 °C or above 50 °C, the error message “Err 2”... -
Page 17: Temperature Calibration
3.6 Temperature Calibration The probe includes a built-in temperature sensor that is factory calibrated with the meter. Perform the temperature calibration only if it is suspected that temperature errors may have occurred over time or when the probe is replaced. The temperature reading can be off... -
Page 18: Measurement
4. MEASUREMENT The meter is capable of taking measurements that incorporate temperature measurements automatically (most common) or using a temperature which is input manually (rare). 4.1 With Automatic Temperature Compensation (ATC) To compensate the reading using temperature values as measured by the electrode, attach the phono jack of the temperature sensor to the meter. -
Page 19: ( Con 6 Plus, Tds 6 Plus)
The fi ve ranges are: Conductivity TDS Range ( TDS 6 PLUS) Range ( CON 6 PLUS) (using 0.5 TDS factor) 0 – 20.00 μS/cm 0 – 10.00 ppm 0 – 200.0 μS/cm 0 –... -
Page 20: Hold Function
TDS factor (TDS 6 PLUS), automatic or manual calibration (CON 6 PLUS), single-point or multi-point calibrations ( CON 6 PLUS and TDS 6 PLUS), and to reset meter to factory default. - Page 21 Default value is 1.0. Select Automatic Calibration. “Yes” for auto calibration and “No” for manual calibration. Default value is “Yes”. ( CON 6 PLUS only) Adjust Temperature Coeffi cient from 0.0 to 3.0 % per °C. Default value is 2.1 % per °C.
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Page 22: Select Cell Constant ( Con 6 Plus, Tds 6 Plus )
CAL to exit to measurement mode. 5.3 Automatic Calibration (CON 6 PLUS only) Select automatic calibration “YES” to chose four factory pre-set conductivity calibration standards (see Section 3.3 Table 1). To use other standards, or to calibrate any standard manually select “no”. -
Page 23: Setting The Tds Factor ( Tds 6 Plus Only)
5.4 Setting the TDS Factor ( TDS 6 PLUS only) As the concentration of salts dissolved in solution increases, the conductivity will increase. 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. -
Page 24: Normalization Temperature
5. Press to move to the next setup function or press CAL to exit to the measurement mode. 5.6 Normalization Temperature The meter can be set to normalize the measurements to a temperature of either 25 °C or 20 °C. The default value is 25 °C. 1. -
Page 25: Restore Factory Default Values
5.8 Restore Factory Default Values Use this function to reset all parameters to factory default settings. This will clear all calibration data and any other setup functions that might have been changed. IMPORTANT: Once the reset function has been activated the settings and calibration data will be erased and cannot be restored 1. -
Page 26: Troubleshooting
& replace calibration solution incorrect solutions “Er1” Attempted calibration Check the value of value was not within the conductivity CON 6 PLUS the ±40% auto calibration solution. TDS 6 PLUS calibration window Switch to manual calibration mode and re-calibrate “Er2”... -
Page 27: Specifications / Features
8. SPECIFICATIONS / FEATURES CON 6 TDS 6 PLUS PLUS Conductivity 0 to 20.00 (0.01) μS/cm Ranges 20.0 to 200.0 (0.1) μS/cm (Resolution) 200 to 2000 (1) μS/cm 2.01 to 20.00 (0.01) mS/cm 20.1 to 200.0 (0.1) mS/cm TDS Ranges 0 to 10.00 (0.01) ppm (Resolution) 10.0 to 100.0 (0.1) ppm... -
Page 28: Conductivity Theory
FEATURES Auto-Buff er Recognition Yes ( CON 6 PLUS) Hold Function Yes “HO” Low Battery Indicator Yes “LO” Auto Shut Off 20 minutes after last key operation Display Custom LCD Operating Temperature 0 to 50 °C Power Requirements (4) AAA alkaline batteries (included) Battery Life >100 hours... - Page 29 In practice, conductivity measurements involve determining the current through a small portion of solution between two parallel electrode plates when an AC voltage is applied. Conductivity values are related to the conductance (and thus the resistance) of a solution by the physical dimensions—area and length—or the cell constant of the measuring electrode.
- Page 30 particularly where high purity water is involved. The unit most often used to describe resistivity is megohm-cm, which are simply the reciprocal of conductivity (μS/cm). The chart below shows the relationship between these units. Conductivity Resistivity (μS/cm) (megohm-cm) 0.056 10.0 Conductivity and Temperature Conductivity in aqueous solutions refl...
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Page 31: Calibration Tips
If measurements are taken at extreme temperatures, calibrate the meter at least once a week. Only probes specifi ed for the CON 6 PLUS and TDS 6 PLUS meters should be used. These probes have a built-in temperature sensor. If a probe without a temperature sensor is used, the temperature of the solution must be measured separately and entered manually. -
Page 32: Calculating Temperature Coefficients
Check the factor by multiplying the conductivity reading by the factor in the above formula. The result should be in TDS value. Tip: When the TDS factor is set to 1.0, Conductivity = TDS. 12. CALCULATING TEMPERATURE COEFFICIENTS To determine the temperature coeffi cient of the sample solution: –... -
Page 33: Replacement Parts And Accessories
6317-G 14. WARRANTY LaMotte Company warrants this instrument to be free of defects in parts and workmanship for 3 years from the date of shipment and the probe to be free of defects in parts and workmanship for 6 months from the date of shipment. -
Page 34: Repairs
Should it be necessary to return the meter for repair or servicing, pack the meter carefully in a suitable container with adequate packing material. A return authorization number must be obtained from LaMotte Company by calling 800-344-3100 (US only) or 410-778-3100, faxing 410-778-6394, or emailing tech@lamotte.com. - Page 36 PO Box 329 • Chestertown • MD • 21620 • USA 800-344-3100 • 410-778-3100 • f 410-778-6394 www.lamotte.com 626094-32 11/19...
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