EUTECH INSTRUMENTS CYBERSCAN DO 100 DISSOLVED OXYGEN METER Manual de usuario

Technolo

ade

Instruction Manual

DO 100

Hand-held Dissolved Oxygen Meter

68X235201

rev 4 01/04

Preface

This manual serves to explain the use of the DO 100 hand-held meter. It functions as a step

by step guide to help you to operate the meter and as a handy reference guide. It is written to

cover as many anticipated applications of the DO 100 meter as possible. If there are doubts

in the use of this meter, please do not hesitate to contact the nearest Eutech

Instruments/Oakton Instruments Authorised Distributor.

Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or

malfunction to the meter caused by improper use of the instrument.

The information presented in this manual is subjected to change without notice as

improvements are made, and does not represent a commitment on the part of Eutech

Instruments Pte Ltd/ Oakton Instruments.

Eutech Instruments Pte Ltd.

Oakton Instruments

Rev 4 01/04

TABLE OF CONTENTS

1INTRODUCTION 1

2DISPLAY AND KEYPAD FUNCTIONS 2

2.1 Display 2

2.2 Keypad 3

3PREPARATION 5

3.1 Inserting the Batteries 5

3.2 Connecting the Probe 6

3.3 Connecting the AC Adapter 7

4CALIBRATION 8

4.1 Temperature Calibration 9

4.2 DO Calibration in Air (with ATC) –% Saturation Mode 11

4.3 DO Calibration in mg/L Mode 13

5MEASUREMENT 14

5.1 Taking Measurement 14

6HOLD FUNCTION 15

7MEMORY FUNCTION 16

7.1 Data Input 16

7.2 Memory Recall 18

8SET FUNCTION 20

8.1 SET Function in % Saturation Measurement Mode 21

8.2 SET Function in mg/L or ppm Measurement Mode 31

9DISSOLVED OXYGEN PROBE 38

9.1 Dissolved Oxygen Principle 38

9.2 Probe Care 39

9.3 Membrane Housing Replacement 40

9.4 Electrolyte Solution 43

9.5 DO Probe Troubleshooting Table 44

10 TROUBLESHOOTING 46

11 ERROR MESSAGES 47

12 ADDITIONAL INFORMATION 48

12.1 Dissolved Oxygen 48

13 SPECIFICATIONS 51

14 ACCESSORIES 52

15 WARRANTY 54

16 RETURN OF ITEMS 54

Instruction Manual DO 100

1 INTRODUCTION

Thank you for selecting the DO 100 portable meter. The DO 100 portable meter is a

microprocessor-based instrument that is designed to be practical and user-friendly. It is

capable of measuring Dissolved Oxygen (DO) in mg/L or ppm units, % saturation and

temperature. This meter has many user-friendly features – all of which are completely

accessible through the water-resistant membrane keypad.

Your meter includes a dissolved oxygen / temperature probe with a submersible cable, spare

membrane cap; a bottle of replacement electrolyte solution, (4) AAA batteries, and instruction

manual. Please read this manual thoroughly before operating your meter.

Instruction Manual DO 100

2 DISPLAY AND KEYPAD FUNCTIONS

2.1 Display

The LCD has a primary and secondary display.

•The primary display shows the measured DO value either in mg/L, ppm or %,

depending on units of measurement selected.

•The secondary display shows the temperature in °C.

The display also shows error messages, keypad functions and program functions.

See Figure 1.

Figure 1: Full LCD Screen

Instruction Manual DO 100

2.2 Keypad

The large membrane keypad makes the instrument easy to use. Each button, when pressed,

has a corresponding graphic indicator on the LCD. See Figure 2. Some buttons have several

functions depending on its mode of operation.

Key Function

ON/OFF Powers on and shuts off the meter. When you switch on the meter, the meter

starts up in the mode that you last switched off from. For example, if you shut

the meter off in mg/L measurement mode, the meter will be in mg/L

measurement mode when you switch the meter on.

HOLD 1. Freezes the measured reading. To activate, press HOLD while in

measurement mode. To release, press HOLD again.

2. In its SETUP menu, this key takes you through the main menu.

MODE 1. Selects the measurement parameter. Press MODE to toggle between %

Saturation and mg/L or ppm mode.

2. While in the CAL mode under mg/L or ppm measurement status, this key

will toggle between mg/L (ppm) calibration and temperature calibration

(refer to Section 4.1 on page 9 to 10.)

CAL/MEAS 1. Toggles between Calibration and Measurement mode.

If you were in Measurement mode, press CAL/MEAS to enter Calibration

mode. To confirm calibration, press ENTER key.

To abort calibration, press CAL/MEAS key again to go back to

measurement mode.

2. While in SETUP, pressing CAL/MEAS takes you out directly into the

measurement mode.

ENTER 1. Press to confirm your calibration values in Calibration mode.

2. While in SETUP, pressing ENTER key takes you through the various

menu AND through each sub-menu.

MI & MR

/ 

In measurement mode:

Press MI /to store values in mg/L or % Saturation values with its

corresponding temperature values in the memory. Up to 16 sets of values can

be stored.

Press MR/to retrieve data from memory in LIFO method.

In Calibration mode:

Scrolls up and down values with each key press, or helps make selection.

SET Takes you into the SETUP mode.

Instruction Manual DO 100

Figure 2: Keypad

Instruction Manual DO 100

3 PREPARATION

3.1 Inserting the Batteries

The DO 100 is packaged with 4 “AAA” alkaline batteries required for operation. To insert the

batteries into the meter, follow the procedure outlined below.

1. To open the battery compartment, press down the catch of the battery cover. See Figure

3a below.

2. Note the polarity and insert the batteries into the battery compartment correctly (Figure

3b).

3. Replace the battery cover into its original position, ensuring the catch is lock into its

position.

Your hand-held meter is now ready for operation.

Figure 3b: Battery position

Figure 3a: Back panel of meter

showing battery compartment

LR03 'AAA' (AM4)

MADE IN S'PORE

Instruction Manual DO 100

3.2 Connecting the Probe

The DO 100 uses a special notched 6-pin connector to attach the probe to the meter.

NOTE: Do not substitute other probes or electrodes. For replacement probe, see

the Section 14 “Accessories” on page 52.

NOTE: Keep connector dry and clean. Do not touch connector with soiled hands.

To connect the Dissolved Oxygen probe:

1. Line up the notch and 6 pins on the meter with the holes in the 6 pin connector. Push

down and screw the metal sleeve to lock the probe connector into place. See Figure 4.

2. To remove probe, unscrew the metal sleeve and slide up the probe connector. While

holding onto metal sleeve, pull probe away from the meter.

CAUTION: Do not pull on the probe cord or the probe wires might disconnect.

Figure 4 - Probe Connector

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