Thermo Fisher Scientific CON 700 User Manual

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Instruction Manual

CON 700 Conductivity/ºC/ºF Bench Meter

Part of Thermo Fisher Scientific 68X541702 Rev. 3 Nov 2010

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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)................................................12

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.

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.

S Increase value. Scroll up in SETUP & CAL modes.

MR (Memory Recall) recalls values from memory T Decrease value. Scroll down in SETUP & CAL modes.

Freezes measured reading. Press again to resume live reading.

2.2 LCD Annunciators

2.3 Meter Connections

CON/

Temp

8-pin DIN connection for 2-cell Con/TDS/Temp electrode

Power supply

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.

The wetted materials of the probe include:

• 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 on the 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 TABLE 1, the CON 700 must be set for manual calibration instead.

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