Fully automatic for analysis, monitoring & quality control

Two different views of the BULKINSPECTOR gas pycnometer on a smoky greyish background with spotlights

The fully automatic SIEBTECHNIK TEMA gas pycnometer is a high-precision tool for determining the density (skeletal density, also called true density) of solids and bulk goods.



Why is it the next generation?

The sample to be analyzed is typically placed manually into the measuring chamber of the gas pycnometer. In our device, the sample is placed in the measuring cell using a sample handling device. The process, which was previously carried out completely manually, has thus been automated, and the volume and mass of the solid are now determined in a single device.

The sample material is fed into the device from the outside, ideally via a sample magazine in which the samples to be analyzed are buffered for the desired period of time.

Suitable for use in automated production processes

Robust, precise and resilient

The BULKINSPECTOR gas pycnometer is a closed system, the harsh environment of an industrial plant, i.e. sound, dust, heat, cold, dirt or moisture do not bother it.
The insulated steel housing is largely insensitive to external influences. The samples can be fed by conveying devices, such as a closed vibratory feeder. In this way, contamination of the sample can be excluded.
Since the weighing takes place inside the BULKINSPECTOR, external influences can be almost excluded here as well. Furthermore, the high-precision weighing cell is less sensitive to vibrations than common standard scales.
The temperature inside the device is kept constant by means of a Peltier element, therefore heat or cold also have no influence on the measuring result, even such values as the constantly changing air pressure do not falsify the measuring result.

Therefore the BULKINSPECTOR gas pycnometer is equally suitable for laboratory and rough process conditions.

What problems do standard pycnometers have in industrial plants?

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and extended functionality

The pycnometer is controlled via a mobile control panel (tablet), which is included in the items supplied.

After opening the app, the user is presented with a userfriendly, modern interface design for operating the device.
Formulas for different samples can be set and managed via this interface. Measurement records can also be managed & exported, and the basic settings of the device can be adjusted. Depending on the user level, some of these function are password-protected.

The operator can also access the user instructions via the tablet. If necessary, they can order any spare and wearing parts required from us directly online.

A person operates the BULKINSPECTOR pycnometer via tablet, it shows the start menu. Here you can choose whether you want to make a measurement, set the sample parameters or measurement parameters, calibrate the device, display the results or change general settings.


and technical details

After the material sample has been picked up in a measuring cup, this is inserted into the measuring cell via a handling device and the volume of the sample is determined there according to the advance settings selected.

After the repeat determination of the volume, the handling device transports the material on to the scale for determination of the sample mass.

The two parameters volume and mass are now known, and from these the density of the sample is automatically calculated.

Finally the handling device removes the measuring cup and discharges the measured material sample into the emptying device. There the measuring cup is additionally cleaned with compressed air and is then ready to receive the next sample.

Get a closer look at how our pycnometer works

Watch the video below


Important figures

ModelPYC 130-A
Measuring cup volumes130 / 65 / 10 cm³
Number of holding points for measuring cups4
Sample gasHelium
Measurement pressure0 ... 140 kPa
Scale0 ... 510 g +/- 0.0001g
Measurement temperature15 ... 35°C
Calibration methodAutomatic calibration with calibration sphere
Measurement uncertainty+/- 0.02%
Data InterfaceWifi
Dimensions (w/d/h)1100 x 675 x 855 mm
Weight190 kg
Power supplyAC 110 V/16 A/60 Hz, AC 230 V/10 A/50 Hz

industrial plant - interior with pipelines
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