Spring tester SPG 1000

The SPG 1000 is used to evaluate the jumping behaviour and dissolving capacity of flock fibres under the influence of tension and thus simulates real working conditions.

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Product description

The SPG 1000 jumping tester simulates the practical conditions of a flocking machine and thus assesses the jumping and dissolving capacity of the flock under the influence of tension. The following evaluation criteria are checked during the jumping test:

  • The lift-off time of a defined amount of flock under the influence of a defined electric field of 4 kV/cm
  • Jumping characteristic in the electric field
  • Possible residual amount of flock fibres
  • Measurement of the current during the jump time

The test chamber of the SPG 1000 is shown with a closed Plexiglas cylinder of 350 mm height and 290 mm diameter and the opposing ground electrode and a live electrode. The ground electrode has a diameter of 80 mm, on which the flock sample plate with a diameter of 95 mm is placed. The live electrode is connected to the high-voltage generator at a distance of 100 mm and a diameter of 60 mm by means of a high-voltage cable in the connecting arm. The electrode distance can be individually adjusted from 48 - 102 mm, depending on requirements. In the test area, the base plate forms a scale with diameter indication for flock assessment. In order to ensure practical and easy handling, for placing the sample plate as well as for cleaning the inner wall, the cylinder is divided and the front half is removable. Likewise, the rear half of the cylinder can be removed simply by pulling the ground electrode out of the connector and tilting the cylinder half over. When closed, the cylinder provides sample inspection during testing and protection from flying flock. In addition, the cylinder provides a safety guarantee as protection against contact. A high-voltage generator is installed in the base of the device, which supplies approx. 45 kV negative DC voltage. The following displays and settings are possible on the control panel in the front panel:

  • Measuring device for setting the voltage to 40 kV
  • Control knob for HS adjustment
  • Control lamp for mains operation
  • Remote control plug with push button

digital time measuring device, which displays the duty cycle of the electrostats
Display for the measuring process
The 2-pole socket with plug on the side allows the connection of an external ammeter and alternatively to a recorder.
The power switch and the plug are located on the back of the device. Using the sieving device, the flock can be dosed through the sieve onto the sample plate with a small round brush. The sieve consists of a sieve with a mesh size of 0.8 mm, which is inserted into a two-part cylinder. The cylinder has an inner diameter of 80 mm and a diameter of 95 mm at the lower edge and can therefore be fitted to the flock sample plate. The following evaluation criteria lead to a quantitative as well as qualitative assessment of the flocculation behaviour:
The lift-off time to be read on the chronometer is the main assessment characteristic, whereby a flock-typical initial value, such as the supplier's specification or production-related own determinations, are opposed to this.
In case flock residue remains on the sample plate after 30 seconds of power-on time, it is balanced and compared to a standard value.
The jump characteristic shows the behaviour of the flock during the stress action, this is measured as follows:


Flock yard on the ground plate
Evaluation criterion: diameter in cm
Beard formation:
Evaluation criterion: yes/no
Settling of the flock on the cylinder wall
Assessment criterion: yes/no, above/below the electrode
Dissolution assets
Judging ability: even/ uneven
You thus receive a testing device for a reliable evaluation of the jumping behaviour as well as of flock fibres under the influence of tension. The working conditions correspond to those of a flocking machine, resulting in a 1:1 transferable test. The SPG 1000 features simple and precise operation and is the only device on the market that measures flocking behaviour at 40 kV under real conditions. It is ideally suited for reliable incoming goods inspection of flock and detects abnormal jump behaviour under the influence of high voltage.

Technical data:

High voltage: 40 kV, max. approx. 45 kV
Short circuit current: < 0.7 mA
Electrical power: approx. 50 VA
Voltage: available in 110 V (US) and 230 V (EU), 50/60 Hz

Scope of delivery:

Housing with built-in electrostat
Plexiglas cylinder 2-piece with lid
Power cord (US 110 V and EU 230 V available)
Grounded flock sample plate
High voltage electrostats, continuously adjustable from 30-45 kV, with calibration mark 40 kV
Electronic pulse counter that measures the lift-off time of the flock to the second
Remote control button for switching the high voltage on and off
Aluminum shovel
on/off switch
Dummy plug, ampèremeter connection
Screening device
Sieve with 0.6 and 0.8 mm mesh size
ISK wrench M 2.7 for screen change
Operating instructions
Unpacking instructions

Click here & view flyer!

Additional information

Weight 20 kg
Dimensions 430 × 330 × 510 cm
Power cable

US 110 V and EU 230 V

Spring tester SPG 1000

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