EVO EXPERT Manual
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Use a thermostatic bath with demineralised water or refrigeration special liquid. Change the
liquid form the thermostat regularly. Recommended flow: 15 l/min.
Materials:
The metallic parts are made of stainless steel, the leads are made of plastic in Delrin Negro.
The parts in contact with the sample (sample container and spindle) are made of AISI 316
suitable for food industry.
The lead inferior washer is made in black Delrin. It is designed to get a maximum temperature
of 100ºC (212 ºF)
The circulation jacket is made of acetyl and Delrin.
The O-ring on the plastic stopper (M) of the APM Adapter is made of Delrin.
The softening point is 110 °C (230 °F).
10.3 HELDAL UNIT – Helicoidal Movement Unit
NOTICE:
The Heldal adapter doesn’t come with the standard delivery. It can be ordered as an accessory. The
unit is supplied complete with T-shaped spindles, in this case.
The Heldal accessory is used with substances that do not flow by themselves (like ice or pastas). Is
engine moves the viscometer slowly in a vertical movement and at the same time the spindle
makes the rotation movement. This generates a helicoidal movement that makes that the T-shaped
spindle is always in contact with the sample.
The measurements obtained with Heldal do not measure absolute viscosity! They are only
comparative measurements with the same geometry as T-shaped spindles.
Fig. 15 Heldal Unit in its case
