Oakton PD 300 Manual de usuario

Instruction Manual

PD 300

Waterproof Hand-held pH/Dissolved Oxygen/Temperature Meter

Technolo

ade

68X248910

Rev.3 JUN 06

Preface

This manual serves to explain the use of the PD 300 hand-held meter.

The manual functions as a step by step guide to help the user operate the meter and as a handy

reference guide.

This instruction manual is written to cover as many anticipated applications of the meter as

possible. If there are doubts in the use of the PD 300 meter, do not hesitate to contact the nearest

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 subject 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.3 JUN 06

TABLE OF CONTENTS

1INTRODUCTION 1

2DISPLAY AND KEYPAD FUNCTIONS 2

2.1 Display 2

2.2 Keypad 3

3PREPARATION 4

3.1 Inserting the Batteries 4

3.2 Probe Information 5

4CALIBRATION 7

4.1 Important Information on Meter Calibration 7

4.2 Temperature Calibration 8

4.3 pH calibration 9

4.4 Dissolved Oxygen Calibration 12

4.5 Dissolved Oxygen Calibration in % Saturation 13

4.6 Dissolved Oxygen Calibration in mg/L (ppm) mode 15

5MEASUREMENT 17

5.1 Taking pH Measurements 17

5.2 Taking DO readings 21

5.3 Taking Pressure/Salinity Compensated DO measurements 23

6HOLD FUNCTION 24

7BACKLIT LCD 52

7.1 Using the backlit LCD 25

7.2 Adjusting the LCD brightness 25

8ADVANCED SETUP FUNCTIONS 62

8.1 Advanced SETUP Mode Detailed Overview 26

8.2 P1.0: Viewing previous pH calibration data 30

8.3 P2.0: Viewing pH electrode data 31

8.4 P3.0: pH Measurement configuration 32

8.5 P4.0: Resetting to factory default settings (pH) 36

8.6 P1.0 (dPr): Dissolved Oxygen Parameters 37

8.7 P2.0 (OFS): Offset for % Saturation Measurement 40

8.8 P3.0 [P2.0] (CAL): Previous Calibration Information

(*Program numbers in “[ ]” are for setup in mg/L (ppm) mode. 41

8.9 P4.0 [P3.0] (ELE): Electrode Properties 42

8.10 P5.0 [P4.0] COF: Unit Configuration 44

8.11 P6.0 [P5.0] LCd: Adjusting LCD Brightness 48

8.12 P7.0 [6.0] rSt: Resetting to Factory Default Setting (DO) 49

9PROBE CARE AND MAINTENANCE 05

9.1 pH Electrode care 50

9.2 Dissolved Oxygen Principle 52

9.3 Probe Care and Maintenance 53

9.4 Membrane Housing Replacement 54

9.5 Membrane/O-ring Replacement (Optional Procedure) 55

9.6 Electrolyte Solution 57

9.7 DO Probe Troubleshooting Table 58

10 TROUBLE SHOOTING GUIDE 60

11 ERROR MESSAGES 61

12 SPECIFICATIONS 62

13 ACCESSORIES 63

14 ADDENDUM 1: DISSOLVED OXYGEN & METER THEORY 66

15 ADDENDUM 2: PRESSURE VS ALTITUDE TABLE 67

16 ADDENDUM 3: METER FACTORY DEFAULT SETTINGS 68

17 WARRANTY 69

18 RETURN OF ITEMS 70

Instruction Manual PD 300

1 INTRODUCTION

Thank you for selecting the PD 300 waterproof portable meter. This meter is a

microprocessor-based instrument that is designed to allow one-hand operation. It is capable of

measuring pH, Dissolved Oxygen (mg/L or % Saturation of Oxygen) and Temperature. It is

completely WATERPROOF --- and it FLOATS!

This meter has many user-friendly features ---- all of which are completely accessible through

the water-resistant membrane keypad. Your meter includes a pH electrode (EC-DA93506-

03B / 35805-23), dissolved oxygen electrode with integrated temperature sensor in a

submersible cable (EC-DOHANDY / 35640-50), maintenance kit, and instruction manual.

These items are available in a hard, plastic carrying case which makes it ideal for outdoor field

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

Figure 1: Waterproof PD 300 Dissolved Oxygen Meter

Instruction Manual PD 300

2 DISPLAY AND KEYPAD FUNCTIONS

2.1 Display

The LCD has a primary and secondary display.

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

or %, depending on units of measurement selected).

•The secondary display shows the measured temperature.

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

Figure 2: Full LCD Screen

1. SETUP mode indicator 7. Oxygen solubility indicator in

mg/L or ppm.

13. Probe indicator

2. MEASurement mode indicator 8. Temperature indicator 14.Calibration indicator

3. CALibration indicator 9. pH buffer indicator 15 Function ON / OFF

indicator

4. pH indicator 10. Automatic Temperature

Compensation indicator

16 HOLD indicator

5. % saturation indicator 11. ERRor indicator 17 READY indicator

6. ppt indicator for input of

Salinity value.

12. Low battery indicator

Instruction Manual PD 300

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 1. Some buttons have several

functions depending on its mode of operation.

Key Function

ON/OFF Powers meter on and off. The meter powers on in the mode that you were last using.

For example, if you shut the meter off in mg/L measurement mode, the meter will be in

mg/L measurement mode when switched on. Note: The meter shuts off automatically

after 20 minutes of the last key press.

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

To release, press HOLD again.

NOTE: When auto endpoint feature is switched on, it automatically holds reading after 5

seconds of stability. The HOLD indicator appears on the display. Press HOLD again to

release.

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

saturation; and DO mg/L.

2. While in CAL mode under pH or mg/L (parts per million – ppm) measurement status,

this key will toggle between pH or mg/L (or ppm) calibration and temperature

calibration (refer to Section 4.2 in page 8).

CAL/MEAS Toggles between Calibration and Measurement mode.

1. In pH measurement mode, press CAL/MEAS to enter pH calibration mode.

2. In DO % saturation measurement mode, press CAL/MEAS to enter DO %

saturation calibration mode.

3. In DO mg/L (or ppm) measurement mode, press CAL/MEAS to enter DO mg/L (or

ppm) calibration mode.

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

mode.

While in advanced SETUP mode: Press CAL/MEAS to return to main menu from sub

menus. Press CAL/MEAS again to return to return to measurement mode from main

menu.

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

2. While in SETUP, pressing the ENTER key confirms selections.

▲/▼

In CALibration & SETUP mode:

In DO mg/L (or ppm) and temperature calibration mode, press up or down keys to

increase or decrease the values.

In SETUP mode, press up or down keys to scroll through the setup subgroup programs.

Within the SETUP sub-menu group, press up or down keys to change values.

SETUP Takes you into the SETUP mode. This mode lets you customise meter preference and

defaults, view calibration and electrode data.

LIGHT. Press to activate backlit display.

Instruction Manual PD 300

3 PREPARATION

3.1 Inserting the Batteries

Four AAA batteries are included with your meter.

1. Use a Philips screwdriver to remove the two screws holding the battery cover. See Figure

3 below.

2. Remove battery cover to expose batteries.

3. Insert batteries. Follow the diagram inside the cover for correct polarity.

4. Replace the battery cover into its original position and secure into place using the two

screws removed earlier.

Figure 3: Back panel of meter showing meter compartment

Instruction Manual PD 300

3.2 Probe Information

Your meter includes two probes:

•pH electrode with BNC connector.

•DO/temperature probe with a notched 6-pin connector

The temperature sensing element built into the DO probe will also compensate for pH

readings as long as both probes are in your solution at the same time.

You can use any standard pH electrode with a BNC connector with this meter. DO probes, “3-

in-1” pH electrodes with a built-in temperature element, and temperature probes require a

notched 6-pin connector (see Figure 4). For replacement probes, see the Accessories section.

If you want to use a “3-in-1” pH probe with a built-in temperature element, or if you want to use

a separate temperature probe, you will need to disconnect the DO probe to allow for

connection of the separate temperature sensor.

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

To connect the pH electrode:

1. Slide the BNC connector of the probe over the BNC connector socket on the meter.

Make sure the slots of the connector are in line with the posts of the socket. Rotate and

push the connector clockwise until it locks.

2. To remove electrode, push and rotate the connector counterclockwise. While holding

onto the metal part of the connector, pull it away from the meter.

See Figure 4.

CAUTION: Do not pull on the probe cord or the probe wires may be damaged.

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