Zero-setting and Measurement
Zero-setting
【Caution】
◇
Zero-set the instrument at the beginning of each day before use as well as after replacing the batteries.
◇
Let water on the prism acclimate to the temperature of the instrument before zero-setting.
◇
When
“
AAA
”
is displayed, wipe the prism clean, apply water, and press the ZERO button again.
1.
Wipe the prism clean and
apply about 0.3mL of tap water.
2.
Press the START
button, and after
“
---
”
appears, the
measurement and the
prism temperature are
displayed.
3.
4.
Zero-setting is
complete when
“
000
”
blinks
twice and then stops.
Measurement : not 0.0
Press the ZERO
button while the
water is on the
prism.
Measurement : 0.0
Proceed to measurement.
Wipe the prism clean with
tissue paper.
The instrument is zero-set
correctly.
Dilution
＜Reference＞
Ethyl alcohol
76.9-81.4vol％
The 1:1 dilution
Apply some diluted
sample
←Water、100ｍＬ
｝
99％
Ethyl alcohol
80mＬ
Water 1ｍL
Ethyl alcohol
1mL
Gently stir.
←Water、100ｍＬ
｝
95％
Ethyl alcohol
83mＬ
Measurement
1.
Wipe the prism clean and
apply about 0.3mL of the sample.
2.
Press the START
button
3.
After
“
---
”
appears, the
measurement and the prism
temperature are displayed.
Displayed
＝measured value×2
（dilution）
Offset
ｙ＝ax+b
Default：
a=2 ， b=0
【Caution】
◇
This instrument displays the concentration of ethanol in water as a percentage of total volume.
◇
When a solution contains components other than ethanol and water, the readings may not correspond to alcohol by volume.
◇
Do not use metal tools to apply samples on the prism as they may scratch the prism.
◇
Initial measurements may fluctuate with hot or cold samples. Wait for the instrument to acclimate to the sample temperature,
approximately 20 seconds, to press the START button. Alternatively, press the START button multiple times until
measurements become stable.
◇
Do not splash water above 50℃. The plastic may warp, which may compromise the water resistance.
◇
The displayed temperature is that of the prism and may not necessarily match the temperature of the sample.
<LCD Auto Shut-off>
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.
<Option>
An anti-volatile cover, MAGIC, is available (sold separately) to prevent volatilization of the sample.
Part No. RE-39446 Apply some sample on the prism, then place the MAGIC so it fits tightly over the sample.
Press the START key whilst leaving the MAGIC on the sample.
Cleaning
【Caution】
◇
Do not scratch the prism.
◇
The instrument is water-resistant, not waterproof, and should not be submerged.
1. Wipe off the sample.
2. Clean the prism and sample stage using a mild soap and thoroughly rinse with water.
3. Dry the area with tissues thoroughly.
Offset Function
1.
Hold down
ZERO while it
is turned on.
“
b
”
wil appear.
2.
Press ZERO
to select either
addition (b) or
subtraction (-b).
3.
Press START
to confirm.
4.
Enter the addition/subtraction number.
ZERO to change the number:
0
,
1
,
2
, …,
8
,
9
,
10
,
0
,
1
,
2
…
START to confirm and move to the next
decimal place.
When the 1
st
place is confirmed with
“
10
,
”
the number selections for the decimal
places are skipped.
5.
Press START
to confirm the
addition/subtracti
on number.
Next is to program
a coefficient.
（Factory default
2.00）
6.
Enter the
coefficient.
Refer to the
step 4.
7.
Press
START to
confirm the
coefficient.
※
To disable the Offset feature, set the Offset value to factory default value
(a:1.00, b:0.00).
※
The measurement range is shifted according to the offset settings.
※
Screen images when offset is on
y = ax + b
y：Actual concentration
x：PAL-102S readings
a：Coefficient (multiplication)
Range: 0.01 to 10.00
（Factory default 2.00）
b：Addition/subtraction number
Range: -10.00 to 10.00（Factory default 0.00）
Replacing the Batteries
【Caution】
◇
Fasten the battery compartment cover tightly to prevent water ingress or poor connection, which will cause erroneous
measurements. Push the cover in firmly and turn.
◇
When the O-ring on the cover is dirty or damaged, the water resistance may be compromised. (Figure 1)
◇
When the battery icon indicates the low power level (
), replace both batteries with a brand new set of AAA alkaline
batteries (1.5V).
◇
Static images may occasionally appear on LCD. Such retained pixel charges do not indicate a faulty display, consume the
battery power, or affect the instrument
’
s performance in any way.
◇
Check the expiration dates on batteries before purchase.
◇
Zero-set the instrument after the batteries are replaced.
1.
Insert a coin in the
groove on the battery
compartment cover. Turn
the coin counterclockwise
to remove the cover.
2.
Insert batteries,
observing the correct
polarity.
3.
Align the cover and
push it down.
4.
Close the battery compartment
cover by pushing the cover in with
a coin in the groove and turning it
clockwise until it stops.
*Turning excessively may cause
malfunction.
1 2 3
Figure１
１
O-ring
Groove
Approx.
2mm
Approx. 0.3mL of sample
Approx. 0.3mL of water
Approx.
2mm
For addition, only
“
b
”
will appear.
1 2 3
Water after
zero-setting
Offset
“
b
”
=
addition of 0.30
During
measurement
For coefficient (a)
For addition/subtraction (b)
No plus sign will
be displayed.
Mild
soap
MAGI
C
20.4
℃
79.2
