-available with GPS module –


The Light Weight Deflectometer ZFG 3.0 is a further development of our proven ZFG 02.

It is even more convenient, lighter and simpler to use than its predecessor. Without compact design in a measuring case, this pocket-sized tester can operate just as well as its “big brothers”. Stored and protected in a sturdy leather case, the measurement results can be stored either on an SD card or in an internal memory. Intuitive menu-driven prompts allow even inexperienced users to reliably carry out and evaluate the tests.

Your benefits

  • Only hand-held tester in a leather case for hanging around your neck
  • Only hand-held tester with triangular carrying handle (no rolling during transport)
  • Only hand-held tester with SD memory card
  • Only hand-held tester with integrated calibration reminder
  • Only hand-held tester with self-test for function control of the unit
  • Up to 1500 tests with just one set of batteries (4x R6 batteries)
  • Variable text input
  • Variable pre-loading pulses
  • Choice of ten languages
  • Acoustic actuation signals
  • Plausibility check
  • Automatic saving of the collected data on SD card or in the internal memory
  • Certified in-house production
  • Reliable service – all from a single source



The Light Weight Deflectometer ZFG 3000 GPS is the successor to our ZFG 2000 sold thousands of times. Away from the old-fashioned memory card in cheque card size with complicated installation of a card scanner and into the SD card and internal memory, even higher-capacity batteries and position fixing via GPS. A future-oriented representation of the Position using UTM (Universal Transverse Mercator) safeguards the use even in future applications in pipework and cable installation.


The dynamic CBR test (California Bearing Ratio-test) is performed in the laboratory on crushed samples whose maximum grain size is 22 mm and whose sieve residue is normally not more than 50%. This test can be performed as an alternative to the static CBR test to Technical Test Requirement for Soil and Rock in Road Construction (TP BF – StB Part B 7.1 [1]). It is used in particular due to the short time required as a quick-testing method as part of in-house monitoring tests for production control during the manufacture of mineral aggregate mixture from steelworks slags. Advantage compared with the CBR test to TP BF – StB Part B 7.1 [1] is the elimination of the need for a loading frame and the associated static loading device.

The CBR value

The dynamic CBR value is a complex strength characteristic which is dependent on the strength, the grain form, the frost resistance and grain roughness of the individual grain, the grain composition, the fines content, the water content and the compaction of the mineral aggregate mixture.

It serves e.g. for checking the frost resistance or to estimate the ride qualities and compactability as well as the load-bearing strength of the laid mineral aggregate mixtures.

The CBR test

The dynamic CBR test can be performed as an alternative to the static CBR test to Technical Test Requirement for Soil and Rock in Road Construction TP BF – StB Part B 7.1 [1]. It is used in particular due to the short time required as a quick-testing method as part of in-house monitoring tests for production control during the manufacture of mineral aggregate mixtures. Advantage compared with the CBR test to TP BF – StB Part B 7.1 [1] is the elimination of the need for a loading frame and the associated static loading device (compression test machine).


The “ZFG software” for the ZFG developed in-house at Zorn to meet customers’ requirements is also downward compatible with the earlier ZFG Series (ZFG 02, ZFG 2000, ZFG 3000 ECO, ZFG 3000 GPS). The data transferred with the SD card can be selected by measuring ranges, localities and other parameters even during the read-in. The transmitted data are labeled and saved in different profiles. Once entered, the labels are automatically copied together with the profile during later read-in operations. The representation of the individual settlings and the corresponding measurement curve are each displayed in a specific colour can can thus be unambiguously assigned. Logs, overviews and statistics can be printed out and mailed, together with all labels, inputs and measurement data. Your previously inserted corporate logo is printed in the top right corner of every log.


The Electronic Plate Load Device AX 01 allows simple determination of the load-bearing and deformation capacity of soils. The load settlement lines and the modulus of deformation Ev1, Ev2 are determined to DIN 18134:2001-09 or E DIN 18134:2010-04 (plate load test). Thanks to the splashproof housing, external buttons and a backlit display, it can also be used under inclement ambient conditions. Test logs can be printed out directly on site. The results saved on an SD card during the test can be transferred to the PC and are available for further processing under Microsoft Excel®.


  • Weatherproof quick-start guide, extensive operating manual
  • Easy operation with 4 buttons, display and menu prompts
  • Rainproof, sturdy design
  • Load plate diameter 300 mm, 600 mm, 762 mm variable
  • Lever ratio 1:1 to 1:2 variable
  • Resolutions: Settling 0.01 mm, normal load 0.0001 MN/m²
  • (in printout and saved), 0.001 MN/m² (display)
  • Battery, installed, 4.8 V, 4 Ah, quick-chargeable 2 hours, for approx. 48 h
  • continuous operation
  • Thermal printer 58 mm paper width
  • SD memory card for saving of approx. 200 tests, external USB card reader
  • 230V power supply unit and in-vehicle charging cable
  • CD with software for Windows PCs for evaluation using Microsoft Excel®


The Grinding Fineness Tester SR 1 serves to determine the dewatering rate of paper and wood grindings.

This tester allows you to reliably determine how quickly the cellulose is drained on the screen and permits a good assessment of the material fineness, as dewatering rate and degree of crushing of the fibre material are closely interrelated.

It gives numerical values for the otherwise relative and subjective assessment by the observer of the terms “crisp” and “smeary”. The determinations can be carried out so quickly that it is possible to constantly monitor the effect of a beater or other crushing devices on the fibre material.

The test method

consists in 2 g of dry material finely dispersed in 1000 cm3 of water being dewatered through a screen. The screen forms the bottom of a chamber which is placed on a funnel with two discharge openings at different heights.

If the material is dewatered quickly, characterising a “crisp” state, a large proportion of the water flows out of the higher opening, with “smeary” substances only a small proportion. The amount of water under the discharge opening on the side is a measure of the dewatering rate and of the degree of grinding of the material. There is a scale on the measuring device which can be read off directly.


A funnel-shaped separation chamber with two discharge openings is placed into a stand. Arranged on the separation chamber is a filling chamber containing a mesh with a given mesh width and area. A sealing cone is placed into the filling chamber which seals the filling chamber from the separating chamber so that the material/water mixture can be poured in before the test.

The sealing cone is lifted out of the filling chamber by the force of a falling weight. For this purpose, a rack is attached to the cone which engages with a gear wheel. The gear wheel is connected to a roller over which a cord is placed and at the free end of which a weight is suspended. After tripping of a detent, the cone is always lifted out at the same speed.

Technical data

  • Dimensions: 450 x 250 x 1000 mm (length/width/height)
  • Weight: net 34 kg, gross 86 kg
  • Installation: The tester is placed on a table and aligned using adjusting screws


The field of application for penetrometers lies in the geological examinations of soils. They are used for determining stratum interfaces during the examination of the subsoil for building, bridge, road or other construction, for re-examination of compaction work and ballasting and for determining the deposit features of loose, non-compacted soils. In addition they can provide information on physical data of the underground for assessment of the load-bearing strength and for structural stability questions.

Furthermore, the results can be used to determine the probable driving properties of the soil as a certain similarity exists here between penetrometer examinations and the driving of piles. Penetrometers provide information on the soil relatively quickly and simply. Tests with the “light penetrometer” can be performed with soil that is not too solidified down to examination depths of approx. 8 to 12 m. For more solidified soils and larger depths, the “heavy penetrometer” should be used, and for tests in drill holes the “standard probe”.


for clear filtration of liquids which are difficult to filter

Special features

Replaceable filter element, Easy filter changing, Quick-coupler with eccentric 3-way valve for simple operation, Throttle valve for regulated pressure increase, Removable funnel, Pressure gauge


Technical data

Filter unit:

  • Filter diameter: 11 cm
  • Filter volume: 250 cm²
  • Maximum pressure: 6 bar
  • Samples per hour: 60


  • Motor power: 200 W
  • Voltage: 230 V
  • Frequency: 50 Hz
  • Maximum pressure: 8 bar
  • Tank volume: 4 l
  • Noise level: 51 dB(A)


Scope of delivery


  • Filter system with 3-way directional control valve, throttle, pressure gauge
  • 2x filter element with filter hold-down device
  • 1x discharge funnel
  • 1x O-ring 110 x 4
  • 2 m pressure hose with quick coupler

In addition for Thailand:

  • Tilting bridge with discharge funnel
  • 0.8 m silicone hose