Sper scientific 850048 User manual

DO Meter Kit

850048

Instruction Manual

FIRST TIME USE or USE AFTER BEING UNPLUGGED

FOR MORE THAN ONE HOUR.

This instrument requires calibration prior to operating.

After attaching the probe for the rst time, please allow

the probe to warm up for 30 MINUTES before beginning

calibration. Please see calibration instructions on page 9.

When using the meter, press the buttons rmly for

one full second to ensure proper operation.

DO Meter Kit 850048

Printed in the USA

The contents of this manual may not be reproduced

or transmitted in any form or by any means electronic,

mechanical, or other means that do not yet exist or

may be developed, including photocopying, recording,

or any information storage and retrieval system

without the express permission from Sper Scientic.

TABLE OF CONTENTS

Introduction. . . . . . . . . . . . . . . . . . . . . . . 4

Attaching and Detaching the Probe . . . . . . . . . . 5

Front Panel Description . . . . . . . . . . . . . . . . 6

LCD Display Description . . . . . . . . . . . . . . . . 7

Dissolved Oxygen % Saturation Calibration . . . . . . 8

Measurement Procedures . . . . . . . . . . . . . . . 9

Function Settings. . . . . . . . . . . . . . . . . . . .11

Memory Clear (P10) . . . . . . . . . . . . . . . . . 12

DO Review and Set Parameters (P60) . . . . . . .13

Select Temperature Units (P70) . . . . . . . . . . .14

Restore Default Settings (P90) . . . . . . . . . . .15

pH Electrode Slope (P20) . . . . . . . . . . . . . .16

Conductivity Calibration (P30) . . . . . . . . . . . .17

Conductivity Cell Constant (P40) . . . . . . . . . .18

DO Probe Maintenance . . . . . . . . . . . . . . . .19

Battery Installation and Replacement . . . . . . . . .21

Troubleshooting . . . . . . . . . . . . . . . . . . . . 21

Error Codes . . . . . . . . . . . . . . . . . . . . . .22

Specications . . . . . . . . . . . . . . . . . . . . .23

Appendix A: pH Probe (Optional) . . . . . . . . . . .25

Appendix B: Conductivity/Salinity Probe (Optional) . .29

Warranty . . . . . . . . . . . . . . . . . . . . . . . . 36

INTRODUCTION

This meter reads dissolved oxygen (DO) for measuring

water quality in labs, industrial and municipal waste water,

aquariums, sh hatcheries and environmental testing.

Features include automatic temperature compensation

(ATC) and manual altitude and salinity compensation.

The meter also provides readings in either °C or °F,

multiple calibration points (for optional pH and

conductivity probes), 99 memory points, a large backlit

LCD screen, a low battery icon and one-hour automatic

shut off. A Set Up Mode allows you to customize the

meter’s defaults and parameters.

The meter comes complete with DO probe, replacement

electrolyte uid, 2 replacement membrane sets, carrying

case, batteries, and instruction manual.

Optional Accessories:

• Replacement DO Probe - 850048DO

(includes 2 probe heads & electrolyte)

• Conductivity/Salinity Probe - 850048C/S

• pH Probe - 850048PH

ATTACHING AND DETACHING THE PROBE

Always turn the power OFF before attaching and

detaching the probe, and use caution. Please use

alignment quide markings on probe and meter for

proper connection (see image below).

To attach the probe to the meter:

1. Plug the probe into the connector port on top of

the meter.

2. Screw down the attached probe guard until it is

moderately tight.

To detach the probe from the meter:

1. Unscrew the probe guard (the piece that is directly on

top of the meter that connects the probe to the meter).

2. Holding the plug, pull the probe away from the meter.

DO NOT hold the cable and pull the probe and meter

apart as this may damage the probe connection.

Marker on

Meter Connection

Marker on

Probe Connection

FRONT PANEL DESCRIPTION

POWER/SET - Press to turn the meter on

and off. In Normal Mode, press for >2 seconds

to enter Function (Set) Mode.

CAL/ESC - Press to switch between Normal

and Calibration Modes. Press to return to

Normal Mode from Function or Recall Modes.

EC/SALT - If using with the optional conductivity

probe, press to switch between CON (µs) or

Salt (ppt) units.

RECALL - Press for >2 seconds to read the

memory value.

% / mg/L - Press to switch between

DO in % and mg/l.

▲- Press to increase the displayed value

in Function or Calibration Modes.

MEM - Press to save the current reading.

▼- Press to decrease the displayed value in

Function or Calibration Modes.

ENTER - Press to conrm the calibration or

parameter setting.

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

SET

ESC

CAL

EC/SALT

RECALL

% / mg/L

MEM

ENTER

LCD DISPLAY DESCRIPTION

• The DO value is displayed

on the left side of the LCD.

• The temperature value is

displayed on the upper

right side of the LCD.

• The total number of records saved is displayed on the

lower right side of the LCD.

TEMP

MEMO

mg/l

ATC

7.The DO value will be displayed on the

left side of the LCD.

8.The temperature value will be

displayed in the upper right corner of

the LCD.

9.The MEMO number which is the total

number of records saved in the meter

will be displayed in the lower right

corner of the LCD.

D.O. probe

DO PROBE (please inspect upon receiving)

Clean the electrode (see pg. 19) if there is too much white

residue attached to it. It is normal to see the cloudy/milky

electrolyte and there is no need to replace it for this

reason. The best condition of the electrode is a clean

surface. However, some white residue attached on

electrode is also ne.

DISSOLVED OXYGEN % SATURATION CALIBRATION

After attaching the probe, please allow the probe to

warm up for 30 minutes before beginning calibration.

Calibrate the meter before each use.

1. Remove the protective cap from the DO probe.

2. Press the power button to turn the meter ON.

See p.16 to adjust salt & altitiude value if necessary.

3. Hold the probe in a well ventilated area for several

minutes (it may take 5-10 minutes) until the LCD

reading has stabilized. This is particularly important

if you have just relled the electrolyte solution or

replaced either the batteries or the membrane set.

4. Press CAL/ESC for 2 seconds to calibrate for 100%

saturation. The CAL icon will ash on the LCD.

5. Press ENTER to nish the

calibration.

6. If “ERR” appears during

calibration, there is an error

due to low electrolytes or a

defective probe.

Note…

To exit Calibration Mode without saving the new value,

press CAL/ESC. The meter will retain the previously saved

calibration data for the current range.

CAL

8.Repeat step 1~8 for other ranges

calibration if needed.

NOTE:

If you would like to exit the conductivity

calibration mode without saving,

please press CAL/ESC key instead

and it will retain the meter's previous

calibration data for the current range.

We recommend the users to calibrate

the meter before operate it each time.

Calibration Step for DO % SATURATION

a.In normal mode, hold the probe in

the air , wait for few minutes until the

reading on LCD is stabilized. Press

CAL/ESC to calibrate for 100%

saturation calibration, CAL icon is

flashing on LCD.(Fig 23)

b.Wait couple seconds, when the

reading is stable, press ENTER to

finish the calibration.

c.You can stop the calibration by

pressing CAL/ESC.

d.Whenever an error occurs during

calibrating, the ERR indicator will

appear. It might cause by low

electrolyte condition or probe defect.

Fig. 23

DO % SATURATION CALIBRATION

Note:

While following condition happens,

Please turn on the meter and wait for

MEASUREMENT PROCEDURES

1. Remove the protective cap from the DO probe.

2. Insert the DO probe into the meter.

3. Press the power button to turn the meter ON.

4. Hold the probe in the air until the LCD reading has

stabilized. This may take several minutes.

5. The DO reading will be displayed on the LCD.

You may change the display from % to mg/L

as desired by pressing % / mg/L.

6. Place the probe into the sample solution, making

sure that the electrode is completely immersed in

the sample.

7. Stir the probe gently to create a homogenous sample.

8. Wait until the reading has stabilized.

Storing DO Readings in Memory

1. To store the reading in memory, the value must be

displayed in mg/l. Press % / mg/L if needed to change

from % to mg/L.

2. Press the MEM button to save the value.

3. The memory number will be displayed on the LCD.

If the memory is full, “FUL” will be displayed. See

Memory Clear Function on p.12.

Recall Readings

1. Press and hold RECALL for 2 seconds to enter

Recall Mode.

2. Press ▲ or ▼ to scroll through the data in memory.

3. Press CAL/ESC for 2 seconds to return to

Normal Mode.

TEMP

MEMO

mg/l

ATC

This meter has the advanced setup

mode which allows you to customize

and check your meter's preferences

and defaults.If you would like to

change the parameters, please press

" SET " for more than 2 sec. to enter

the setup mode when the meter is in

the measurement mode.

NOTE:

To exit the function without saving in

the setup mode, press the CAL/ESC

key until the measurement mode

appears. If the meter is under the

setting value status, press the

CAL/ESC key twice to exit.

SETUP

Fig 18

Press any key to actirate the

backlight for 10 seconds

BACKLIGHT

Table of contents

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