Micromeritics Gemini 2375
Objektnummer | B00017505 |
---|---|
Seriennummer | 017505 |
Nome oggetto | Micromeritics Gemini 2375 |
Stato | Archiv |
Status, terms of delivery and payment
Verification of devices
The second-hand devices are verified by Labexchange Service GmbH before delivery. You are receiving only fully functional devices.
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The stated dispatch times are the shortest possible ones for each article. The effective dispatch times can vary. The effective dispatch times will be stated in the order confirmation.
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We do not accept payment by letter of credit, PayPal, etc. In each case the invoice amount is payable without deduction. Discount is not granted.
Country |
Possible payment methods |
Comment |
DE, AT, CH |
Payment by invoice, payment in advance, payment by credit card |
Payment by invoice is only possible for corporate clients. |
NL, BE, LU |
Payment by invoice, payment in advance, payment by credit card |
Payment by invoice is only possible for corporate clients |
Other countries |
Payment in advance, payment by credit card |
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The goods are offered subject to prior sale.
Definition of status
All articles are used articles, except an article is listed especially as a new device.
Status |
Condition |
Comment |
Immediately available |
Used | The article is fully functional and in impeccable condition. It can be shipped immediately. |
In stock |
Used |
The article is on stock. Our service technicians will verify the article before delivery. You are receiving only a fully functional article. |
Published |
Used |
The article is still with the provider. After your order the article will be purchased and verified by us before being shipped to you. A certificate of operativeness as well as a service report are included in delivery. |
New device |
new |
The article is brand new and unused. Regarding new equipment the guarantee/warranty conditions of the corresponding manufacturer apply. |
Labprocure |
Used |
Labprocure GmbH, as the advertiser, is responsible for the content of this device offer. Labprocure assumes liability for the offers advertised here and for the photos and offer texts included. Labprocure GmbH, Bruckstraße 58, 72393 Burladingen. |
manufacturer : Micromeritics
model : Gemini 2375
annotation : Dokumente engl.
The following illustrations and descriptions refer to the instrument model and are drawn from brochures. They do not represent the scope of delivery. Please refer to the text of the offer for the exact scope of delivery.
Attention: This is description for Gemini II 2370. The Models are identical.
The Gemini Analyzer is an easy to use, fully automatic, single- or multipoint surface area analyzer. Once an analysis is started, data are collected, calculations performed, and results displayed without further Operator intervention. The frequent calibrations associated with presently available flowing-gas systems are not required. The analyzer may be operated in any of live languages: English, French, German, Italian, or Spanish.
Gemini provides rapid and accurate sample analysis, including selectable calculation of the following sample characteristics:
n Single-point BET surface area
n
n
n t-Method micropore volume and area
n Total pure volume
As nue as 50 data points can be collected and reported in the BET, Langmuir, or t-Method range. Additionally, Gemini can report discrete point adsorption isotherms consisting of up to 1,000 adsorption points.
Up to ten Run Conditions Sets (Setup Groups) can be stored, enabling you to perform custom analyses with just a few keystrokes.
Analysis results can also be edited by specifying which points are to be included in surface area or t-Method calculations. Gemini automatically recalculates the results and generates a new report. Reports remain available for viewing or printing until anotheianalysis is started. Results can also be transmitted to a remote location or computer via the standard RS-232 connector.
The Gemini Analyzer, shown in the following Illustration, contains a sample station and an attached keypad and display. The analyzer is controlled by commands entered through the keypad. The operational status of the analyzer can be continually monitored an the display.
The primary function of the Gemini is to deterrnine the surface area of solid materials. lt uses a flowing-gas technique in which the analysis gas flows into a tube containing the sample and into a balance tube, at the same time. The internal volume and the temperature surrounding both tubes are maintained at identical conditions. The only difference is the presence of the sample in the sample tube.
The sample and balance tubes are immersed in a single liquid nitrogen bath which maintains isothermal conditions for both tubes. The analysis gas is then deliveredto the sample tube by a servo valve mechanism. The delivery rate of analysis gas flow into the balance tube is controlled by another servo valve connected to a differential pressure transducer. This differential pressure transducer measures the pressure imbalance between the sample and balance tubes, which is caused by the adsorption of the analysis gas onto the sample. As the sample adsorbs analysis gas, the pressure drops in the sample tube. The servo valve continuously restores the pressure balance between two tubes by admitting more gas into the sample tube. The end result is that the Gernini maintains a constant pressure of analysis gas over the sample while varying the rate of analysis gas delivery to exactly match the rate at which the sample can adsorb the gas.
APPLICABILITY
Surface Area: 0.1 m 2 to above 300 m 2 , total;
0.01 m 2 /g and higher, specific
Pore Volume: 4 x 10 -6 cm 3 /g and higher
PRESSURE MEASUREMENT
Range: 0 to 950 mmHg
Minimum Resolvable
Relative Pressure (P/Po): 10 -4
Pressure Resolution: 0.1 mmHg
Accuracy and Linearity: Better than ±0.5%
(Transducer manufacturer's
specification )
VACUUM SYSTEM
External: Vacuum source achieving better than 20 x 10 -3 mmHg at the instrument inlet, and having a device to reduce oil vapor backstrearning is recommended.
The system should also have an antisuckback valve to prevent oil from being admitted into the Gemini should there be a power failure.
ENVIRONMENT
Temperature: 10 to 35 °C (50 to 96 °F) operating
0 to 50 °C (32 to 122 °F) non-operating
Humidity: 20% to 80% relative, non-condensing
SAMPLE TUBES
Standard Tube: The standard tobe has a 0.95-cm (3/8-in.)
outside diameter and is 15.5 cm (6.1 in.) long with 6.5 cm 3 of volume. Sample capacity is approximately 2.0 cm 3 .
Large Tube: The bulb of the large tube has a 1.9-cm
(3/4-in.) outside diameter and is 3.8 cm (1-1/2 in.) long. The tube is 15.5 cm (6.1 in.) long. Tt yields a 12.0-cm 3 volume. Sample capacity is approximately 6.0 cm 3 .
ELECTRJCAL
Voltage: 85 to 264 VAC
Frequency: 47 to 440 Hz
Power: 75 VA maximum
GASES
Adsorbate
Optimized for nitrogen in a liquid nitrogen sample bath. Gemini may be used with non . corrosive adsorbate gases having vapor pressures at both room and bath temperatures that are acceptably high relative to the resblution of the 1,000 mmHg pressure transducer. Typically, oxygen, argon, carbon dioxide, butane, methane, and other light hydrocarbons will produce useful data above absolute
pressures of a few mmHg.
PHYSICAL
Height: 52.4 cm (20.6 in.)
Width: 43.8 cm (17.3 in.)
Depth: 30.5 cm (12.0 in.)
Weight: 22 kg (48.4 lbs)