Sper scientific 850050 Bedienungsanleitung

Large Display

pH Pens

850050, 850051, 850052

Large Display pH Pens -

850050, 850051, 850052

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.

NOTE REMOVING PROTECTIVE CAP:

Hold the blue ring rmly in place with one hand,

rotate the semi-transparent bottle 180° ~ 360°

clockwise. This will loosen the gasket to allow you

to pull the cap off. Reverse the procedure to put

the cap back on.

TABLE OF CONTENTS

1. INTRODUCTION . . . . . . . . . . . . . 3

2. MATERIALS SUPPLIED. . . . . . . . . . 3

3. FRONT PANEL DESCRIPTION . . . . . . 4

4. CALIBRATION INSTRUCTIONS . . . . . 5

5. MEASUREMENT PROCEDURE . . . . . 6

6. BATTERY REPLACEMENT . . . . . . . . 9

7. TROUBLESHOOTING . . . . . . . . . .10

8. SPECIFICATIONS. . . . . . . . . . . . .11

9. WARRANTY . . . . . . . . . . . . . . . .12

INTRODUCTION

These are simple and easy to use waterproof

pH Pens. 850050 measures 2~14 pH. 850051 &

850052 features Hold and Automatic Temperature

Control (ATC), and measures from 0~14 pH.

MATERIALS SUPPLIED

Meter

Batteries

Instruction Manual

FRONT PANEL DESCRIPTION

850050 850051 & 850052

Hold

Calibration

On/Off

pH Value

Symbol when

Battery is

Low

Temperature

First Use: If the unit fails to turn on, check that the

batteries are working and properly installed.

OPERATING INSTRUCTIONS

1. Calibrate routinely before use, anytime the

readings seem erratic, and whenever the

batteries are replaced.

2. Remove the protective cap.

3. Clean the electrode with de-ionized/distilled

water. Note: Crystals may form in the cap and

these can be soaked or rinsed away.

Do not touch or rub the glass bulb.

4. Before rst use or after extended storage,

soak the electrode in KCL (potassium chloride)

solution for 10~30 minutes.

5. Press >1 sec to turn on the unit.

6. For 1-point calibration, dip/stir the electrode into

pH 7 buffer solution and press the CAL button.

If the probe is damaged or cannot detect the

buffer, the unit automatically exits calibration

mode after 10 seconds.

7. During calibration, “CA” ashes on the display.

8. Then, “CAL” and the pH value are shown.

The ATC value is also shown in models 850051

& 850052.

9. “SA” (save) is displayed as the calibration point

is saved.

10. “En” (end) (850050, 850051), or “End”

(850052) displays when the calibration ends.

11. For 2 or 3 point calibration, start with pH 7,

then repeat the above steps for pH 4 and/or

pH 10.

12. For the most accurate readings, the

temperature of the sample and cliabration

solutions should be similar.

13. Repeat the above procedures until

readings stabilize.

14. NOTE: If the buffer needs to be adjusted, press

▲ to adjust the displayed value. “SA” (save) is

displayed, followed by “En” (850050, 850051),

or “End” (850052).

MEASUREMENT PROCEDURE 850050

1. Calibrate routinely before use.

2. Remove the protective cap and clean the

electrode with de-ionized/distilled water. Do not

touch the glass bulb.

3. Press >1 sec to turn on the unit.

4. Dip/stir the electrode into the sample.

5. The pH value is displayed.

6. “- - -” is displayed when the pH sample is out

of range.

7. During measurement, press ▲ to freeze the

reading on the LCD.

“Hold” is displayed. Press ▲ again to return

to normal measurement.

8. The pH Pen automatically shuts off after 20

minutes of inactivity. To disable this feature,

start with the unit off, then simultaneously press

the CAL and ▲ buttons. Release both buttons

when “n” is displayed. The unit returns to

measurement mode.

9. After use, turn off the unit and rinse the electrode.

10. Protect the electrode’s lifespan by adding a

few drops of KCL (potassium chloride) solution

into the protective cap before storage.

11. Always keep the protective cap on when the

unit is not in use.

MEASUREMENT PROCEDURE 850051 & 52

1. Calibrate routinely before use.

2. Remove the protective cap and clean the

electrode with de-ionized/distilled water.

Do not touch the glass bulb.

3. Press >1 sec to turn on the unit.

4. Dip/stir the electrode into the sample.

5. The pH value is displayed.

6. “- - -” is displayed when the pH sample is out

of range.

7. “H” or “L” is displayed when the temperature is

out of range.

8. To switch between °F and °C, start with the unit

off, then simultaneously press CAL and .

9. Release both buttons when “C” or “F” is shown.

10. Press ▲ to select the preferred unit, then

press CAL to save.

11. “SA” (save) is displayed and the

unit returns to measurement mode.

12. During measurement, press ▲ to freeze the

reading on the LCD. “Hold” is displayed. Press

▲ again to return to normal measurement.

13. The pH Pen automatically shuts off

after 20 minutes of inactivity. To disable

this feature, start with the unit off, then

simultaneously press the and ▲ buttons.

Release both buttons when “n” is displayed.

The unit returns to measurement mode.

14. After use, turn off the unit and rinse

the electrode.

15. Protect the electrode’s lifespan by adding a

few drops of KCL (potassium chloride) solution

into the protective cap before storage.

16. Always keep the protective cap on when the

unit is not in use.

BATTERY REPLACEMENT

1. Replace all 4 LR44 batteries when the low

battery icon is ashing, or when troubleshooting

(next page) fails.

2. Unscrew the cover and install the batteries with

the at positive (+) side facing the springs.

3. Do not remove the O-ring.

4. Remove the batteries when the unit is not in use

for an extended period.

TROUBLESHOOTING

1. If there is no display, or you have erratic

readings after having soaked the electrode in

KCL (potassium chloride) solution for at least

1 hour prior to calibration, check the continuity

of the batteries by removing them for 1 minute,

then reinsert.

2. Slow Response: Soak the electrode in KCL

(potassium chloride) solution for 10-15 minutes,

then rinse with distilled/de-ionized water.

3. “- - -” displays when the pH sample is too acidic

or too alkaline.

4. No Display: Be sure to press for at least one

second. If the problem persists, see Battery

Replacement (previous page).

5. If your readings are still erratic after calibration,

soak the electrode for 10 to 30 minutes in KCL

(potassium chloride) solution.

6. Note: It is normal for the pH value to uctuate

quickly when the electrode is exposed to air

and not immersed.

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