EUTECH INSTRUMENTS DO 6 - REV 2 User manual

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Instruction Manual
DO 6
Economy Hand-held Dissolved Oxygen Meter
68X243622
Rev 2 Apr 08
Part of Thermo Fisher Scientific

Preface
This manual serves to explain the use of the DO 6 Dissolved Oxygen Handheld.
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 DO6
palm-top meter as possible. If there are doubts in the use of the Dissolved
Oxygen Handheld, please do not hesitate to contact the nearest Eutech
Instruments / Oakton Instruments authorized Distributor.
Eutech Instruments/Oakton 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 / Oakton Instruments.
Copyright © 2004
Eutech Instruments Pte Ltd
Oakton Instruments
All rights reserved.

TABLE OF CONTENTS
1INTRODUCTION ..........................................................................1
2DISPLAY & KEYPAD FUNCTIONS.............................................2
2.1 DISPLAY .................................................................................2
2.2 KEYPAD ..................................................................................3
3PREPARATION............................................................................4
3.1 INSERTING &REMOVING RUBBER BOOT ................................4
3.2 INSERTING THE BATTERIES .....................................................5
3.3 BATTERY REPLACEMENT........................................................6
3.4 DISSOLVED OXYGEN PROBE INFORMATION............................7
3.5 CONNECTING THE PROBE TO METER ......................................9
3.6 SWITCHING THE METER ON..................................................10
3.7 MEASUREMENT MODE SELECTION:- PERCENTAGE
SATURATION (%), CONCENTRATION (MG/L)(PPM)AND
TEMPERATURE(T).................................................................11
4CALIBRATION...........................................................................12
4.1 IMPORTANT INFORMATION ON METER CALIBRATION...........12
4.2 PREPARING THE METER FOR CALIBRATION ..........................13
4.3 TEMPERATURE CALIBRATION ...............................................15
4.4 DISSOLVED OXYGEN CALIBRATION IN %SATURATION........17
4.4.1 To calibrate 100% Saturation:................................................17
4.4.2 To calibrate 0% Saturation.....................................................19
4.5 DISSOLVED OXYGEN CALIBRATION IN MG/L OR PPM
CONCENTRATION MODE ........................................................20
4.5.1 To calibrate in mg/L (ppm) Concentration mode:...................20
5MEASUREMENT........................................................................22
5.1 WITH AUTOMATIC TEMPERATURE COMPENSATION (ATC)..22
5.2 MANUAL TEMPERATURE COMPENSATION ............................23
5.3 TAKING MEASUREMENTS .....................................................25
5.3.1 To take measurements: .........................................................25

5.4 TAKING PRESSURE/SALINITY COMPENSATED DO
MEASUREMENTS...................................................................26
5.4.1 Pressure Setting Adjustment..................................................26
5.4.2 Salinity Setting Adjustment ....................................................29
6HOLD FUNCTION......................................................................30
7ADVANCED SETUP FUNCTIONS.............................................31
7.1 ADVANCED SETUP OVERVIEW..............................................31
7.1.1 To enter the % Saturation or Temperature Set Up menu: .....31
7.1.2 To enter the mg/L (ppm) Concentration Set Up menu:..........31
7.2 (COF.1) CONFIGURATION MENU..........................................36
7.2.1 Selection of Automatic Temperature Compensation..............36
7.2.2 Selection of mg/L or ppm mode .............................................38
7.3 (CAL.2) CALIBRATION DATA...............................................39
7.3.1 Viewing the % Saturation calibration data..............................39
7.3.2 Viewing the mg/L (ppm) Concentration calibration data ........39
7.4 (ELE.3) ELECTRODE PROPERTIES.........................................40
7.4.1 Viewing the electrode Slope Factor .......................................40
7.4.2 Viewing the % Saturation Offset (Only available in %
Saturation or Temperature Set Up menu):...............................................40
7.4.3 Viewing the 100% Saturation mV value.................................41
7.4.4 Viewing the 0% Saturation mV value.....................................41
7.5 (ATO.4) AUTOMATIC OFF ....................................................43
7.6 (RST.5) RESET TO FACTORY DEFAULT..................................44
7.6.1 Calibration Reset....................................................................44
7.6.2 User Reset .............................................................................46
7.7 (OFS.6) %SATURATION OFFSET ADJUSTMENT....................47
7.8 (DPR.7) DISSOLVED OXYGEN PARAMETERS.........................49
7.8.1 Pressure Setting Adjustment..................................................49
7.8.2 Salinity Setting Adjustment ....................................................51
8PROBE CARE AND MAINTENANCE........................................52
8.1 PROBE CARE .........................................................................53
8.2 PRE-MEMBRANED CAPS REPLACEMENT...............................53
8.3 TO REPLACE THE PROBE PRE-MEMBRANED CAP ....................54

8.4 ELECTROLYTE SOLUTION .....................................................55
9TROUBLE-SHOOTING GUIDE..................................................56
10 ERROR MESSAGES..................................................................57
11 FACTORY DEFAULT SETTINGS..............................................58
12 SPECIFICATIONS......................................................................60
13 ACCESSORIES..........................................................................62
14 ADDITIONAL INFORMATION....................................................63
14.1 DISSOLVED OXYGEN ............................................................63
14.1.1 General Information ...............................................................63
14.1.2 Measurement Units................................................................65
14.1.3 What Is Being Measured?......................................................65
14.1.4 Air Calibration.........................................................................66
14.1.5 Applications............................................................................66
15 WARRANTY...............................................................................68
16 RETURN OF ITEMS...................................................................69

Instruction Manual DO 6
1
1 INTRODUCTION
Thank you for purchasing the DO 6 Dissolved Oxygen Handheld. This economy
microprocessor-based handheld has a large custom LCD (Liquid Crystal
Display) for clear and easy reading.
The DO 6 offers the measurement of dissolved oxygen in the percentage
saturation mode and in the concentration mode. 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.
Your meter includes a dissolved oxygen probe, refill solution, a rubber boot, 4
alkaline “AAA” batteries, and instruction manual.
Please read this manual thoroughly before operating your meter.
To order other accessories and standard solutions, please refer to the Section
on Accessories for more information.

Instruction Manual DO 6
2
2 DISPLAY & KEYPAD FUNCTIONS
2.1 Display
The meter has a large custom LCD that consists of 14-segment 4 digit display
and operation annunciators for Percentage Saturation measurement mode (%),
Concentration measurement mode (mg/L or ppm) and Temperature
measurement mode in degrees Celsius (T). Other annunciators include “A”
(when the ATC function is activated), “CAL” (when meter is in calibration mode)
and battery diagram for low battery condition. See Figure 1.
milligram per litre
(Concentration Mode)
mg/l
ppm
%
TA
14-segment Liquid Crystal Display
Low Battery annunciato
r
Calibration Mode
Annunciator
CAL
Temperature Mode
A T C annunciator
parts per million
Percentage
(Percentage Saturation
Mode)
Figure 1: Active LCD display for DO 6