EUTECH INSTRUMENTS CON 700 - REV 2, CON 700 Instruction Manual

Instruction Manual

CON 700 Conductivity/ºC/ºF Bench Meter

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Part of Thermo Fisher Scientific 68X541702 Rev. 2 Jan 2010

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

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 o

r ºF) simultaneously.

Each meter includes a convenient slide-out card for quick
referenc

e.

Some configurations include an electrode arm and metal
bra

cket 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 serie

s 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
automatic

ally begins in the mode that was last used.
Calibration and memory values are retained even if meter
is unplugged.

Toggle between available measurement modes—
Con

ductivity 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 calibrati on modes.
In SET

UP 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 (Memor

y Insert) stores values into memory.

S

Increase value. Scroll up in SETUP & CAL modes.

MR (Memory Recall) recalls values from memory
T Decrease valu

e. 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

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

DC

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.

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 tempor arily 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

n the

TA

BLE 1, the CON 700

must be set for manual calibration instead.

conductivity, and manual calibration for TDS.
In the automati

c calibration mode, the meter will automatically select
one of (4) conductivity calibration standard values depending o
range and normalization temperature being used (TA

BLE 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

4