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 of the
main scale and the prism
temperature are
displayed.
3.
4.
Zero-setting is
complete when
“
000
”
blinks
twice and then stops.
Measurement : not 0
Press the ZERO
button while the
water is on the
prism.
Measurement : 0
Proceed to measurement.
Wipe the prism clean with
tissue paper.
The instrument is zero-set
correctly.
Measurement
【Caution】
◇
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.
•
When measuring hot samples, place only the necessary amount and do not let it overflow from the sample stage well.
•
When hot water is necessary to clean off hardened samples, use water-soaked gauze around the prism area and keep hot
water away from the body case.
◇
The displayed temperature is that of the prism and may not necessarily match the temperature of the sample.
1.
Wipe the prism clean and
apply about 0.3mL of the sample.
2.
Press the START
button
3.
After
“
---
”
appears, the
measurement of the main
scale and the prism
temperature are displayed.
Display method for
secondary scale
Press the START button
for 2 seconds while
showing main scale.
<To display the main scale>
Press the START button and measure again.
<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
4 seconds.
<For oily/fatty samples>
Try stirring the sample on the prism while measuring to improve the
repeatability of oily/fatty samples.
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.
Error Messages
The following messages alert the user when an operation has failed.
The battery is low.
The prism temperature is below the temperature
range.
The ZERO button was pressed with nothing or
something other than water on the prism.
The prism temperature is above the temperature
range.
The START button was pressed with nothing or an
insufficient amount of sample on the prism.
The instrument is faulty.
(Replace the batteries. Contact ATAGO if this
error persists.)
The sample measured outside the measurement
range.
Too much light is entering the prism, and the
instrument cannot measure accurately.
(Shade the sample stage with your hand and take
a measurement again.)
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.
Lubricate the O-ring regularly (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.
Groove
Approx.
2mm
Approx. 0.3mL of sample
Approx. 0.3mL of water
Approx.
2mm
Figure１
O-ring
Mild
soap
