ATAGO PAL-Easy ACID3 Instruction Manual

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Pocket Acidity Meter (Tomato)
PAL-Easy ACID3
Cat. No. 7303
Parts
LCD
Displays the measured values,
sensor temperature, and battery
indicator.
The instrument will turn itself off
after 2 minutes of inactivity.
To manually turn it off, hold down
the START button for more than
2 seconds.
START Button
Press to take measurement.
R Button
Press to restore default settings
for the Offset Feature.
Battery Compartment
Place and remove batteries from
here.
Image is for explanation purposes only.
It may be different than the actual product purchased.
Contents
Main unit...1 Instruction Manual (this book)...1 AAA batteries...2 Measuring Spoon 1mL...1
Beaker 100mL...1 Digital scale...1（CAbout the Digital Scale）
mPlease remove the tape in the battery compartment before first use.
cThe measuring spoon is available from ATAGO. Part No. RE-39005 Measuring Spoon 1mL
ATAGO instruments are rigorously inspected to ensure each unit meets the highest standards of quality assurance.
Instrument
The instrument measures the acidity (%) in the 1:50 dilution of a sample that is diluted with purified water.
The measurement value is the acidity (%) of the undiluted sample (stock-solution).
Sample Preparation Tips
・Sample dilution
Any amount of sample can be made as long as the dilution ratio is 1:50. We recommend 1.00g of sample to
keep accuracy consistent.
<example>
Sample Purified water
1.10 55.00
Sample 1.10g Add purified water until the
total weight is 55.00g.
Measurement Value
This unit measures and determines the acidity through electrical conductivity.
Citric acid is the primary acid found in Tomato.
The instrument measures the total acidity in a sample and converts it into citric acid concentrations.
Automatic Temperature Compensation
The Automatic Temperature Compensation (ATC) feature is based on temperature detected by the thermo sensor located
near the sensor area.
ATC may not work correctly when the temperature of the sensor area is not the same as the actual temperature of the
sample. When measuring a hot or cold sample, let it sit on the sensor for approximately 20 seconds and measure, or take
multiple readings until measurements become stable.
7303-E06
Preparation
Zero-setting
1.
Clean the sensor
with water.
Dry the area with
⇑
Access now
tissues thoroughly.
Master Kit
R
Instruction Manual
Measurement
[1]Dilution
CAbout the Digital Scale
Sample Stage
cNecessary Materials : Digital scale, Beaker 100mL
Place sample on the sensor 1.
Press the
located at the center of the
POWER Button.
sample stage.
ZERO Button
Press to perform zero-setting.
0.00
Lanyard Hole
[2]Measuring the Acidity
1.
Apply some diluted sample.
At least 0.6mL
Cleaning
・Wipe off the sample. Clean the sensor with water.
Dry the area with tissues thoroughly.
・Clean oily residues with mild soap, and then, rinse with water.
mHandle the sensor with care so as not to scratch it.
Addendum
Measuring Without using a Scale
[1]Dilution
cNecessary Materials : Measuring spoon 1mL, Beaker 100mL
1.
Using the attahced measuring spoon,
place a level spoonful (1mL) of sample in
the attached beaker.
When there is any doubt regarding accuracy of measurement results, adjust the reference value according to the following procedure.
cThe reference solution is available from ATAGO.
Checking with Reference Solution
1. 2.
Clean the
sensor with button (with nothing
water. on the sensor) to
Dry the area zero-set.
with tissues
thoroughly.
(Press the
START button
to turn on the
instrument.)
Calibration
6.
Apply the reference solution.
Turn on the instrument.
Press the START and ZERO
buttons simultaneously.
Zero-setting and Measurement
mRecommended on a daily basis.
2. 3.
Press the START button "000" will appear.
(with nothing on the sensor). Measurement: not 0.00
－Zero-setting is required.－
Press the ZERO button
(with nothing on the
sensor).
Measurement: 0.00
20.4 ℃
Proceed to Measurement
0.0 0
2. 3. 4.
Place the beaker on Pour 1.00g of sample into Add purified water
the scale and zero set the beaker. until the total weight is
(tare). cAny amount of sample 50.00g.
（Press the Zero-set can be made as long as the
button (tare)） dilution ration is 1:50. We
Purified water
recommend 1.00g of sample
to keep accuracy consistent.
Sample
T
0.00
50.00
1.00
2.
Press the Measurement is displayed after "---."
START button. The unit of Acid is %.
20.4 ℃
0.2 5
cThe measurement is the value of the sample
(stock-solution).
For approximate measurement only
2. 3.
Add purified water Gently stir.
to the beaker until the
total amout is 50mL.
Proceed to
Sample
[2]Measuring
1ｍL 50ｍL
the Acidity
Checking with Reference Solution
Part No. RE-130004 Reference solution (0.04% Citric acid solution)
3. 4. 5.
Press the ZERO Apply the reference Press the
solution. START button
Measurement: not 1.49 (±0.15) Acid
*Reference solution
Calibration is required.
(0.04% (g/100g) Citric
acid solution)
Measurement: 1.49 (±0.15) Acid
"000" will appear.
The instrument
20.4 ℃
is calibrated
000
correctly.
At least 0.6mL
Flash Light up
"CCC"
20.4 ℃
will appear.
CCC
Flash Light up
Discrepancies with titration
Due to the difference in measurement principles, readings
from the instrument may not match up exactly with the
readings by titration for certain samples. However,
correlation between the two testing methods can be seen.
20.4 ℃ Offset feature use
0 0 0 Create a conversion chart between the two testing methods.
Flash Light up
For addition/subtraction (b) [Range: -5.00 to 5.00]
1. 3.
2.
Hold down
Press ZERO to
ZERO while it is select either to confirm.
turned on. addition (+) or
(While the measured subtraction (-).
value is displayed)
Addition/subtraction
"b" will appear (b) will appear.
For addition, only "b"
will appear.
0 F S
-b
5.
Gently stir.
No plus sign will be
displayed.
-b
For coefficient (a) [Range: 0.50 to 5.00]
6. 7.
Enter the coefficient. Press
START to
a
confirm the
1.0 0
coefficient.
The 3rd digit: 0 to 9
The 2nd digit: 0 to 9
The 1st digit: 0 to 5
"End" will appear.
START to confirm ZERO to change E n d
and move to the the number.
next digit.
・The measurement range is shifted according to the offset settings.
・Screen images when offset is on.
During measurement After zero-setting with air
DFS 20.4 ℃
- - - 0.3 0
The following messages alert the user when an operation has failed.
Lo ・The battery is low.
A A A Acid
・The sensor was not empty when zero-setting
was attempted.
・Calibration was attempted with something other
than the calibration solution.
Measurement range
Resolution
Measurement accuracy
Measurement time
Backlight
20.4 ℃
Output
1.49
Output category
Acidity scale
Maximum number of data history
Automatic temperature compensation range
Ambient temperature range
International Protection class
Power supply
Dimensions and Weight
Acid: Offset Function
（ ｙ An example of conversion chart
ｙ = a x + b
） 0.8
0.7
ｙ：titration readings
x：The instrument readings
0.6
a：coefficient (multiplication)
0.5
b：addition/subtraction number
0.4
0.35 0.45 0.55 0.65 0.75
（ⅹ）
4. 5.
Press START Enter the addition/subtraction
Press START
number. to confirm the
addition/subtrac
-b
0.0 0 tion number.
The 3rd digit: 0 to 9
The 2nd digit: 0 to 9
The 1st digit: 0 to 5
Coefficient (a) will
appear.
0fs
a
-b
0.0 0
START to confirm ZERO to change
a
and move to the the number.
1.0 0
next digit.
For default
Press the R button while setting up the
Off-Set feature.
Factory default value
b
Addition/subtraction
0.0 0
(b) 0.00
a
Coefficient
1.0 0
(a) 1.00
<example>
E n d
Offset "b" = addition of 0.30
Error Messages
L L L Temperature
・The sensor temperature is below the temperature
range.
H H H Acid
・The sample measured outside the measurement range.
Temperature
・The sensor temperature is above the temperature
range.
Specifications
Acid 0.10 to 3.00% 10.0 to 99.9℃
Acid 0.01% 0.1℃
Acid ±0.10% (0.10 to 1.00%) Relative precision ±10% (1.01% or more)
±1℃
Approx. 2 seconds
The backlight stays on for 30 seconds after any button is pressed.
NFC Forum Type 4 Tag ISO/IEC 14443 Type A
Date Time, Acidity [%], Temp [degC]
(e.g.) 2019/01/17 09:30:45, 0.24 21.3
100
10 to 40℃
10 to 40℃
IP65
Two (2) AAA alkaline batteries
55(W)×31(D)×109(H)mm , 100g (main unit only)
2105K Printed in Japan