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The Magnetic Susceptibility Balance - AUTO is a microprocessor
controlled, state of the art balance for detecting the magnetic properties of
gases, liquids and solids. The improved sensitivity, versatility and overall
performance make it ideally suited for new analytical applications in the
research laboratory and industrial quality quality control.
Retaining all the advantages of our MK I instrument, the enhanced features of the Magnetic Susceptibility Balance AUTO are described:
This balance weighs just under 2.2 kg. and comes complete with rechargeable battery which allows up to 8 hours ofoperation away from a mains power supply.
Supplied in its own robust carrying case the instrument can be fully operational in minutes after arrival at the analysis site.
A travel clamp, external to the instrument and easy to apply, and an adjustable level control are the only setting-up procedures required.
The 8751 microprocessor has the balance calibration constant entered during the manufacture. The digital display of the measurement is directly converted to Volume susceptibility
in c.g.s. units without need for calculation or manipulation. By entering the sample weight
and length (internal sensors detect the diameter of sample tube) Mass susceptibility
can be read directly from the display.
The instrument automatically zeroes when the sample tube is not in position, so it is always
ready for use. An auto tare facility can be implemented by simply pressing the
Tare key with a blank tube in the sample position.
The balance comes equipped with the following sample tubes
to accomodate a wide range of analytical applications:
2 normal sample tubes (0.400 cm. OD x 0.324 cm. ID)
1 large sample tube (0.500 cm. OD x 0.420 cm. ID)
1 liquid flow cell (as normal)
1 stoppered gas cell (normal)
Small bore tubes (ID options 0.100 and 0.200 cm.) and
additional special tubes are available on request.
The instrument comes with sample tube holder and manual. |
A Range of Sample Tubes |
The Magnetic Susceptibility Balance AUTO can now measure from 0.001 x 10-7 to 1.00 x 10-3 c.g.s.
Volume susceptibility units over four operating ranges. This is two orders of
magnitude more sensitive than the Mark I, which is itself comparable in sensitivity to
most traditional methods. The instrument includes both an RS - 232 computer interface
and an analogue output for a chart recorder - particularly useful when using the
Magnetic Susceptibility Balance AUTO as a detector.
The sample detector unit is separated from the read-out and controls which are
housed in a hand-held unit.The operator can remain away from the sample when
measuring hazardous susbtances or reactions.
- Wear particulate analysis directly on
lubricating oils
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- Qualitative analysis of metal complexes
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- QC of industrial diamonds for trace metal
contaminants
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- QC of catalysts in the petrochemical and
plastics industries
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- Pesticide and pharmaceutical analysis by
the generation of free radicals
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- Archaeological studies of soil samples to
indicate human occupation via the relative
oxidation state of metal constituents
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- Examination of chemical reactions on a
microscale and in a protected environment
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- Measurement of the oxidation state of
haemoglobin
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- Characterisation of ion exchange adsorption
and desorption processes
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- Quality control in the fabrication of
superconductors
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- Analysis of rare earth elements and their
oxidation states
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- A redox detector in flow injection analysis
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| Measurement ranges |
Xv in 4 ranges from 0 to +/- 1.999 x 10-7, x 10-6, x10,5, x10,4 c.g.s. units
| | Sample volume required |
10ul to 200ul for accurate absolute measurements depending on tube size |
| Magnetic field strength |
4.5 kGauss | | Analogue output |
Voltage proportional to display value via BNC connector on detector unit back-panel.
| | Computer interface | RS - 232 via 9 - way female "D"- connector on detector unit back-panel
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General specifications
| Detector unit | Control unit | Complete in case |
| Size (mm) | 40 H x 180 W x 235 D | 45 x 100 x 180 | 250 x 550 x 400 |
| Weight (kg) | 2.2 | 0.4 | 4.0 |
| Battery | 4 x AA cells - Rechargeable only. Full charge gives >8 hrs. operation. |
| External supply | t6 - 9 V d.c. (a.c. input adaptor, 110 V or 240 V,
supplied also serves as battery charger) |
The Magnetic Susceptibility Balance AUTO is manufactured only by Sherwood Scientific Ltd
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