The precision plate surface temperature control and integrated stopwatch of Coesfeld Geltest instruments allow the user to determine repeatable and comparable gel times. Using a measuring spoon, the test substance is placed in the polished hollow of the temperature-controlled heating plate, and the built-in stopwatch is started at the same time. The sample is stirred evenly with a stirring needle until no further resin threads form when the needle is lifted. At that point the clock is stopped and the time is read in seconds. The measured time elapsed until this resin state is reached is called the gel time.
- An established, proven test instrument used worldwide
- Multiple device configuration options to match standards
- 16 mm and 20 mm hollow diameter options
- 100×100 mm / 150×150 mm plain plate option
- Precise surface temperature control (±0.1 °C) and an integrated digital stopwatch
Technical Data
| Temperature control | Microprocessor-controlled |
|---|---|
| Temperature range | +60 °C … +250 °C |
| Display accuracy | ±0,1 °C |
| Digital stopwatch | 1 second – 24 hours |
| Hollow diameter options | 16 mm and 20 mm; plain plate 100×100 mm / 150×150 mm |
| External dimensions (WxDxH) | 450 × 220 × 240 mm |
| Weight | ~10 kg |
| Mains | 230 V / 50 Hz (optional 115 V / 60 Hz) |
This model no longer comes with an analog output for connecting a chart recorder.
Supported Standards
Application Areas
Curing characterization of thermosetting powder coatings; process approval of pipeline coating resins (under DIN 30670); gel time quality control of epoxy and polyurethane coatings.