LLG LLG-pH Pen 6.263 690 User manual

1
OPERATION MANUAL
LONG TUBE
LLG-pH Pen
LABWARE
®
Model: 6.263 690

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INTRODUCTION
Congratulations on your purchase of this pen type
long probe pH meter. Please read the manual com-
pletely before using this meter. Filing and keeping
the manual for future reference. Recommended to
soak the electrode for at least 30 minutes before
using to clear up the memory and possible contam-
ination effect or to make the electrode wet if the pH
electrode dries out.
Features:
IP65 Waterproof housing.
Dual display with ATC.
Data hold to freeze readings.
Compact size, easy to t in pocket.
Low battery indicator.
Auto power off.
C/F unit switchable.
Power by 2pcs CR2032 batteries.
Multi points calibration.
One touch only for calibration.
MATERIAL SUPPLIED
This package contains:
pH-meter LLG-pH-Pen x 1
CR2032 button battery x 2
Operation manual
POWER SUPPLY
The meter is powered by 2 pcs CR2032
batteries. To check the battery when:
1. First time use
2. The battery symbol appears on LCD
3. The meter can not power on

3
To install the batteries:
1. Turn off the meter.
2. Loose the battery cover in clockwise
direction by coin (DON’T discard the
black washer!)
3. Replace the old batteries with two
new button cells CR2032.
4. Make sure the batteries are in place
and the polarity is correct.
5. Put back the battery cover and turn it
in counter-clockwise direction to lock
NOTE:
1. Please re-calibrate the meters after
changing batteries.
2. Remove battery from instruments
that you do not plan to use for a
month or more. Do not leave bat-
tery in instrument.

4
H
CAL
H
CAL
H
ATC
F
C
O
O
H
18.8.8
18.8.8
188. 8
o
C
o
C
o
C
LCD DISPLAY
6.263 690
- The 1st display shows the measured pH
reading.
- The 2nd display shows the temp.
- Cal = Calibration mode
- ATC = Auto Temp. Compensation
- = Data hold
KEYPAD
OPERATION
1. Remove the pH-meter from the probe
storage bottle to expose the electro-
de out. It is normal if white crystals
are present on the cap or electrode
assembly.

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ATC
C
O
8.80
28.8
WARNING: Please always make sure
that the bottle is lled with storage
buffer to keep the electrode wet and in
good storage conditions.
Electrode
Rotate the
storage bottle in
counter-clockwise
direction and then pull out
the bottle completely to expose the electrode.
2. Dip the electrode into the test solution.
Press “ “ to power on the meter
and stir it to get a stable reading.
3. A small dot “ “ is ashing while the
meter is in measurement mode. The
LCD not only shows the measured pH
value but also displays the tempera-
ture.
ATC
C
O
8.80
28.8

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4. Press “ “ to freeze current rea-
dings. The “ “ icon will appear on
the LCD and the small dot will not
ash . Press “ “ again to release
the hold mode.
5. Turn off the meter by pressing “ “
button.
6. Once nishing the measurement, cle-
an the electrode, put back the bottle,
store the meter between 0~50 °C.
7. Please see page 8 for the calibration
procedures.
AUTO POWER OFF
(SLEEP FUNCTION)
This meter will shut off automatically 20
minutes of inactivity. For operating longer
time, you can disable the sleep mode.
To disable the auto power off:
Before power on,
pressing “ “ + “ “
keys simultaneously until a
“n” appeared on the screen
and then release keys to
return to normal mode.
"
H
ATC
F
O
12.88
78 . 8
H
"
H
ATC
F
O
12.88
78 . 8
"
H
ATC
F
O
12.88
78
. 8
"
H
ATC
F
O
12.88
78 . 8
"
H
ATC
F
O
12.88
78 . 8

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Note: The disable sleep mode will be
invalid after every power off.
AUTOMATIC TEMPERATURE
COMPENSATION (ATC) &
TEMP. UNIT SETTING
The LLG-pH-Pen is capable of measuring
with Automatic Temperature Compensa-
tion. “ATC” will be displayed in the middle
top of the LCD.
Temp. Unit Setting of pH-pen
To select the temp. unit (°C or °F), turn off
the meter rst. When the meter is off,
press “ “ and “ “ at the same time
until the C or F appears on the LCD.
Press “ “ to select the preferred unit
and then press “ “ to save. “ “ will
appear on the LCD for one sec and then
go back to normal.
"
H
ATC
F
O
12.88
78 . 8
o
C
o
C
o
C
o
C

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CALIBRATION MODE (CAL)
Calibration is necessary and should be
done regularly, recommended everyday
if the meter is used often. The unique
calibration design of the meter features
automatic buffer recognition to avoid er-
rors.
Calibration
1. Power on the meter.
2. Place the electrode into a buffer
solution (4,7or10), pH7 should be
calibrated rst and then 4 or 10 pH for
better accuracy
3. Press “ “ to enter pH calibration
mode. The icon “CAL” will appear on
the LCD for one second and then pH
value (4,7 or 10) will be displayed on
the LCD
4. If probe or buffer is in error:
If the buffer is incorrectly inserted or
the probe is damaged or the probe
cannot detect buffer in below voltage
range, the meter will escape
calibration mode automa-
tically after 10 seconds.
Text “End” will appear on
the LCD in one second
and then will go back to
normal status.
CALATC
F
O
7.0.0
78
. 8
End
CALATC
F
O
7.0.0
78 . 8
End
o
C

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Acceptable voltage range of each point:
pH 4.00 : 97 mV..... 250 mV
pH 7.00 : - 60 mV..... 60 mV
pH10.00 : - 250 mV..... -97 mV
5. If the probe recognizes the buffer:
If the probe successfully recognizes
the buffer, the buffer pH value (4 or 7
or 10) will appear on the display in 2
seconds.
If the calibration buffer is not 4,7,10
but another value, such as 7.01, just
press “ “ to change the value.
6. The adjustable cal. point range for 4.0
pH is from 3.50 to 4.50. For 7.0 pH is
from 6.50 to 7.50. For 10.0 pH is from
9.50 to 10.50
7. To save the calibration value:
When the electrode reads a stable
value and user stops pressing any
keys, the meter will automatically
save the value and then escape the
calibration mode.
"
H
ATC
F
O
12.88
78 . 8
CALATC
F
O
7.0.0
78 . 8
End
CALATC
F
O
7.0.0
78 . 8
End

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8. Rinse the probe with de-ionized water
or a rinse solution (tap water...) after
each measurement to last the meter’s
life.
9. Repeat above steps until the 3 point
calibration are nished.
MAINTENANCE
Please always keep the pH glass bulb
wet by using the storage bottle to
protect and store the electrode.
Always rinse the pH electrode in
de-ionized water or rinse solution (tap
water......) before next use.
Never touch or rub glass bulb in order
to last pH electrode life.
Make sure the electrode is clean.
Between measurements, rinse the
electrode with deionised water. If the
electrode has been exposed to a
solvent immiscible with water, clean it
with a solvent miscible with water e.g.
ethanol or acetone and rinse carefully
with water.
Store the electrode carefully.

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TROUBLESHOOTING
uPower on but no display
1) Make sure the time of pressing
power key is more than 100 mS.
2) Check the battery are in place and
make good contact and correct
polarity.
3) Replace with new batteries and try
again.
4) Move away the batteries for one
minute and then put back again.
uSlow response
Clean probe by immersing the elec-
trode in tap water for 10-15 minutes,
then rinse thoroughly with distilled wa-
ter or use a general purpose electrode
cleaner.
uLCD display “ - - - “
Out of pH range, too
acidic/or too alkaline.
u“H.” Or “L.”
Out of temp. range,
too cold/or too hot.
upH value uctuate quickly
It is normal when the electrode is not
immersed in the water but exposed in
air.
ATC
C
O
ATC
C
O
28 .8
8 .86

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SPECIFICATION
LLG-pH Pen 6.263 690
Operating Temp.: 0~50 °C (32~122 °F)
Operating Humidity: 0~80 % RH
pH calibration buffer suggested:
- Standard USA buffers
- Standard NIST buffers
- Standard DIN buffers
Battery Life: >100 hrs continuous use
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SPECIFICATIONS
Accuracy ±
0.1 pH
Cal.Point (4.7.10)
Auto Power Off
Measurement range
0.00 - 14.00
Temp. Accuracy ±1.0 °C
Temp. Resolution 0.5 °C / °F
Resolution 0,01 pH
Hold Data
Unit C/F switchable
ATC (0~50 °C)
Self-Calibration
Waterproof (IP65)
Size
210 (L) x 36 mm (W) x 20 mm (T)

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WARRANTY
The meter is warranted to be free from
defects in material and workmanship for
a period of one year from the date of
purchase. This warranty covers normal
operation but does not cover battery,
misuse, abuse, alteration, tampering,
neglect, improper maintenance, or
damage resulting from leaking batteries.
Proof of purchase is required for
warranty repairs . Warranty is void if the
meter used to be taken apart.
RETURN AUTHORIZATION
Authorization must be obtained from the
supplier before returning items for any
reason. When requiring a RA (Return
Authorization), please include data
regarding the defective reason, the
meters are to be returned along with
good packing to prevent any damage in
shipment and insured against possible
damage or loss.

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Lab Logistics Group GmbH
Am Hambuch 1
D-53340 Meckenheim
Tel.: [phone]
Fax: [phone]
www.llg-labware.com
[email protected]
LABWARE
®