AB3600 drying time logger

The TQC Model AB3600 Drying Time Recorder is a fully digitally controlled machine for defining the various stages of the drying process for paints and coatings.

The drying time recorder operates according to the BK (Beck Koller) method. Defining the end result or verifying intermediate steps is very easy thanks to the clear digital display and intuitive interface. It also complies with ASTM D5895, ISO 9117-4 and DIN EN 14022 standards.

The drying time recorder has six tracks and comes with two sturdy, reusable 100 X 350 X 3mm glass plates. Optionally six narrow glass plates in special adapters.

The front panel of the drying time recorder is made of transparent glass, which is easy to clean and protects the screen below. The drying time recorder is powered by a 24 V DC power supply.

Operating temperature

The ability to perform tests at temperatures as low as -20 ° C is unique. The drive system is lubricant-free, so there is no risk of the lubricants thickening at lower temperatures. The screen is heated, which improves menu visibility at lower temperatures. These design features result in a wide operating temperature range of -20 ° C to + 70 ° C (non-condensing), allowing testing in climatic chambers.

Wide and adjustable drying time range

A wide and adjustable time range can be set, varying from 1 minute to 200 hours. This makes the Dry Time Recorder suitable for fast drying water based coatings as well as very slow drying paints which may take several days to dry. The time settings are very precise,

Examples of use

- Paints and varnishes (aqueous or solvent-based)

- Nail polish

- Adhesives

The different drying stages

ASTM D5895 - 03 and ISO 9117-4: 2012 standards identify different stages of drying time.

I: Dry to touch:

The stylus creates a pear-shaped mark at the top of the film. The paint no longer flows on the path created by the stylus and lets the glass substrate appear.

Evaporation of the solvent or water results in a solidified film which no longer sticks to the finger when touched.

II: Non-sticky state

The continuous trace in the film ceases and the stylus begins to tear the film or leave a sharp or scruffy mark.

Note: Coatings such as polyurethanes or two-component epoxies can form a different pattern here in the shape of a butterfly or a kite.

Non-sticky state is achieved, light objects placed on the paint film will not stick.

III: Drying time

The stylus moves across the surface of the paint film and leaves no visual mark on the surface.

Paint film is not moved or scored by gently pinching a coated panel between index finger and thumb

IV: Curing time

The stylus is taken out of the film and goes up on top. It leaves a small mark without damaging the body of the film.

The paint film is not moved or scored by pinching a coated panel between the index finger and thumb with medium force.