Drying oven Model 432 Smart

curinganalysistrial

Overview
The Gradient Oven Model 432 Smart I is a laboratory tabletop instrument for evaluating baking and drying behaviour of paint and powder coatings, resins, plastics and similar materials. It simulates production stoving by programming heat-up rate, target temperature and dwell times and supports tests up to 250 C (Model 432 Smart I) or up to 320 C (Model 432 Smart II). Two different coatings can be tested simultaneously when applied using a duplex (double) applicator.

Principle of the test
The unit creates a linear or step temperature gradient across a test panel via a microprocessor-controlled heating bench with 45 insulated heating elements. Users program warm-up speed, target temperatures and dwell times to determine the temperature at which visual changes or damages occur. Typical sequence: coating application, thermal exposure under programmed gradient, rinsing under running water, drying and visual evaluation after ~1 hour and after 24 hours.

Purpose and application
Intended for R&D and QC of baked coating systems (e.g. automotive finishes, stove enamels). Typical uses: determination of process temperature ranges, identification of maximum usable temperatures (e.g. binder yellowing, pigment change), process optimisation and rapid repeatable quality checks compared with convection ovens.

Operation and safety
Menu-guided operation via touch panel (languages: English, French, German). The unit provides 2 × USB ports and 1 × LAN for data/printer output. A holding device automatically transports and secures test panels during insertion/removal; a protective flap closes automatically after panel insertion. Designed for non-explosive laboratory environments; follow local safety and ventilation requirements.

Accessories (examples)

• Quadruple film applicator / double-quadruple film applicator (2 chambers)
• Templates for powder / test panels made of steel
• Self-adhesive marking strips
• Glass plate made of special glass
• Exhaust tube 2.5 m
• Application device made of aluminium

Technical specifications

• Model: Model 432 Smart
• Drive: Electric
• Weight: approx. 103 kg
• Voltage: 230 V, 50/60 Hz
• Operating temperature: 30 C - 250 C (Model 432 Smart I) / 30 C - 320 C (Model 432 Smart II)
• Accuracy (control of heating elements): < ±2 C surface temperatures on 0.8 mm test panels (detailed ranges per max temp: up to 200 C ±2 C; up to 250 C ±3 C; up to 320 C ±5 C — measured under specified test conditions)
• Heating bench: 45 insulated heating elements
• Heating surface: 520 × 100 mm (20.4 × 3.9 in)
• Test surface (panel): 500 × 70 mm (19.6 × 2.7 in)
• Linear gradient: max. temperature difference between 30 and 250 (320) C: 100 C
• Step gradient: selectable 2, 3 or 4 steps; max. temperature difference between two steps: 50 C
• Heat-up speed: programmable 2 C up to 30 C/min
• Holding device: automatic reciprocating insertion/removal (approx. 160 N)
• Power consumption: 3400 VA
• Internal dimensions (H × W × D): approx. 470 × 860 × 585 mm
• External dimensions (W × D × H): approx. 870 × 655 × 500 mm
• Portable / Stationary: Stationary
• Test benches / test trails: 45