EUTECH INSTRUMENTS DO 6PLUS DISSOLVED OXYGEN TEMP User manual

Technolo

ade

Instruction Manual

DO 6+ Dissolved Oxygen/Temp

68X243634

Rev 0 Mar 09

Part of Thermo Fisher Scientific

Instruction Manual DO 6+

Preface

This manual serves to explain the use of the DO 6+ hand held meter.

This manual functions in two ways: first as a step by step guide to help you

operate the meter; second, as a handy reference guide.

This manual is written to cover as many anticipated applications of the DO 6+

meter as possible. If there are doubts in the use of this meter, please do not

hesitate to contact the nearest Eutech Instruments Authorized Distributor.

Eutech Instruments 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

Eutech Instruments.

Eutech Instruments Pte Ltd

Instruction Manual DO 6+

Table of Contents

1. INTRODUCTION ...............................................................1

2. GETTING STARTED.........................................................2

2.1 Description of Keypad Functions ...................................................................2

2.2 Description of LCD Annunciators...................................................................3

2.3 Inserting & removing the rubber armour / stand.............................................4

2.4 Inserting New Batteries.................................................................................4

2.5 Battery Replacement .....................................................................................5

2.6 Connecting the Electrode...............................................................................5

2.7 Electrode Information.....................................................................................6

2.8 Switching the Meter On .................................................................................7

2.9 Changing Mode .............................................................................................7

3. CALIBRATION..................................................................8

3.1 General Information .......................................................................................8

3.2 Temperature Calibration ................................................................................10

3.3 % Saturation Calibration ................................................................................11

3.3.1 100% Calibration ...............................................................................11

3.3.2 0% Calibration ...................................................................................12

3.4 mg/L or ppm Calibration ................................................................................13

4. MEASUREMENT ..............................................................14

4.1 Temperature Compensation ..........................................................................14

4.2 Taking Measurements ...................................................................................15

4.3 Pressure & Salinity Compensated Measurements .........................................16

4.4 Holding a Reading .........................................................................................16

5. SETUP...............................................................................17

5.1 Configuration Menu (COF.1)..........................................................................21

5.2 Automatic Temperature Compensation (A.ATC)............................................21

5.3 Selection of mg/L or ppm (b.DO) ...................................................................22

5.4 Calibration Data (CAL.2)................................................................................22

5.5 Electrode Data (ELE.3)..................................................................................23

5.6 Automatic Shut Off (AtO.4) ............................................................................24

5.7 Reset to Factory Default (rSt.5) .....................................................................25

5.8 % Saturation Offset Adjustment (OFS.6) .......................................................26

5.9 Pressure & Salinity Adjustment......................................................................27

6. PROBE MAINTENANCE ..................................................29

6.1 Cap and Electrolyte Replacement..................................................................30

6.2 Electrolyte Solution........................................................................................31

7. TROUBLESHOOTING ......................................................31

8. ERROR MESSAGES ........................................................32

Instruction Manual DO 6+

9. FACTORY DEFAULT SETTINGS ....................................33

10. SPECIFICATIONS ............................................................34

11. REPLACEMENTS AND ACCESSORIES.........................36

12. DISSOLVED OXYGEN THEORY .....................................37

Measurement Units.....................................................................................................38

What Is Being Measured?...........................................................................................38

Air Calibration .............................................................................................................39

Applications ................................................................................................................39

13. WARRANTY......................................................................40

14. RETURN OF ITEMS..........................................................40

Instruction Manual DO 6+

- 1 -

1. INTRODUCTION

Thank you for purchasing the DO 6+. This microprocessor-based handheld

meter is economical and easy to use. It has a large custom LCD (Liquid Crystal

Display) for clear and easy reading.

The DO 6+ offers measurement of dissolved oxygen (DO) as percentage

saturation or concentration. Temperature measurement is also available in

degrees Celsius. The meter ensures accurate measurement of the dissolved

oxygen values through its temperature, barometric pressure and salinity

compensation features.

Meter kits include a dissolved oxygen probe, refill solution, a rubber armour /

stand, 4 alkaline “AAA” batteries, instruction manual, and warranty card. For

additional information, see Section 11 — REPLACEMENTS AND

ACCESSORIES.

Please read this manual thoroughly before operating your meter.

Instruction Manual DO 6+

- 2 -

2. GETTING STARTED

2.1 Description of Keypad Functions

Your meter has 6 keys on its splash-proof keypad.

Some buttons have multiple functions depending

on the mode of operation.

ON/OFF Powers meter on and off. Meter starts

up in the measurement mode that you

last switched off from.

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 you into the SETUP mode.

For more information see Section 5 — SETUP.

HOLD Freezes measured reading. Press again to resume live reading.

ENTER Confirms calibration value in calibration mode and confirm selections

in SETUP mode.

 Increment/decrement values during calibration mode or scroll through

SETUP menus. Set offset adjustments and configuration settings.

Instruction Manual DO 6+

- 3 -

2.2 Description of LCD Annunciators

Your meter has a large custom LCD that consists of 4-digit segments plus

annunciators for percentage saturation (%), concentration (mg/L or ppm) and

Temperature in degrees Celsius (T).

Other annunciators include “A” (when the ATC function is activated), “CAL”

(when meter is in calibration mode) and low battery condition.

Active LCD display for DO 6+

milligram per litre

(Concentration Mode)

mg/l

ppm

14-segment Liquid Crystal Display

Low Battery annunciato

Calibration Mode

Annunciator

CAL

Temperature Mode

A T C annunciator

parts per million

Percentage

(Percentage Saturation

Mode)

Instruction Manual DO 6+

- 4 -

2.3 Inserting & removing the rubber armour / stand

1. To remove meter from rubber armour, push out from the bottom edges of

meter until it is completely out of boot. Ensure that your electrode cables

are not connected. See Figure 1.

2. To insert meter into armour, slide in from the top of meter 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. See Figure 2.

Ing New Batteries

2.4 Inserting New Batteries

The battery compartment is found at the back of instrument. To open the battery

compartment, push in the direction of arrow and lift up the cover. Note the

polarity of battery before inserting into position. After replacement, place cover

back and press down until it locks.

Figure 1 Figure 2

Table of contents

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