Transcript
C054-E056B
Shimadzu’s unique 2-WAY Ionizer Hand-held/On stand
Static Remover For Electronic Balances
Air blower switched ON/OFF
Secure static removal The excellent ion polarity balance achieved by the AC method ensures:
Optimized operation for solid or powdered samples.
• No inverse charging • Wide angle static removal
Space-saving design
• High performance maintained over a long period of use
Compact main unit requires a minimal space. Holder height and angle are adjustable.
Solution
Due to static electricity......
100.00
00g
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+ − −
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Display
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+ + +
• Poor repeatability in weighed results
100.0003g 100.0002g 100.0001g 100.0000g 99.9999g
Elapsed time
+ +
+ +
100.00
00g
− −
• Measurement result error
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+
−
− −
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Display
• Display fluctuates or drifts over a long time.
100.0005g 100.0001g
100.0003g 99.9998g 199.9992g
Elapsed time
The first The second The third The fourth The fifth
Examples of Applications Quickly discharge container or bulk samples with fan ON.
For powdered samples, fan can be turned OFF.
As a handheld unit
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100g
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100.00
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23g
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100.0023g
Static Removal by Ion Irradiation
Concept of static removal 1
Weighing tends to be unstable when the sample and/or container are subject to static charging. With the high-frequency AC corona discharge method, Shimadzu’s STABLO-EX ionizer provides a stable ion balance and excellent static removal performance on samples and containers. Precision weighing work becomes remarkably efficient. Electrodes are safely housed inside the unit.
− − − −
− − − −
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Example: negatively charged sample
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AC Method Produces Excellent Ion Balance
Ions are applied to sample + +
−−− −
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−−− −
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−−− − +
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+ −
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AC corona discharge
+ −
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+ −
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− + − +
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DC method
+ −
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Electrodes
Electrode
DC method DC voltage is applied to a couple of electrodes. One is positive and the other is negative. Each electrode emits ions of one polarity only. An effective static removal angle is limited if the two electrodes are distanced. As electrodes deteriorate, initial ion balance is lost.
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− +
+ −
+ −
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Only the opposite charge ions are attracted.
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AC method
AC method AC voltage is applied on the discharge needle and a well-balanced mixture of positive/negative ions is emitted in rapid alternation from one electrode.
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+ − + − + −
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Negative static charge is neutralized by positive ions.
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+ + +
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: Effective area
If ion balance is poor…… −
Ion balance is the balance of positive and negative ions that are supplied by an ionizer. If ion balance is poor, static is not removed or inverse charging may result.
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− + −
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+ + −
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Sample
Sample
Not neutralized (negative charge remains)
Inversely charged (results in positive charge)
Ozone concentration
0.04 ppm (at 2 cm from electrode)
Electrode probes
Stainless steel (SUS304, Durability: 10,000 hours)
Max air volume
0.06 m3/min
Weight
Approx. 540 g (Main unit: approx. 110 g, Stand: 430 g)
Operating temperature and humidity 0 to + 40°C, 35 to 80% RH (non-condensing) AC adapter (Output: DC 12 V ± 1 V, 1 A)
KNOB FOR FIXATION M3 (TAP M3 DEPTH 5 ON MAIN UNIT) DIRECTION OF BLOWER CENTER AXIS OF BLOWER
VIEW A
ø1
02
43 CENTER AXIS OF BLOWER (REF.) 8
98
8 sec/5 cm, 12 sec/10 cm, 100 sec/50 cm (At factory shipment, fan ON)
89 87 27.5 25.5
Static elimination time (approx.) (from ± 1000 V to ± 100 V)
A
149
Approx. 5 to 50 cm from electrode
CENTER AXIS OF BLOWER
ø85
1.6
Effective static removal range
53 (MAIN UNIT)
± 20 V
90
Ion balance
88
96 (MAIN UNIT)
32 (MAIN UNIT)
AC corona discharge method
98 CENTER AXIS OF BLOWER (REF.)
Ion generation method
Physical Dimensions
156 137
18
Specifications
DIRECTION OF BLOWER
36.5
What is “ion balance”?
Power source
Well-balanced mixture − of positive/negative + + ions are emitted in − rapid alternation. −
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www.shimadzu.com/an/
© Shimadzu Corporation, 2013
Printed in Japan 3655-11306-10ANS
