The general technical specifications for the flame retardancy tester include a PLC-based control system and a 7-inch color touchscreen interface that supports switching between Chinese and English. Common gas sources include propane, butane, or liquefied petroleum gas (LPG); the instrument is also equipped with a flame height adjustment mechanism and a device for measuring flame height. Regarding safety features, the instrument is fitted with a highly sensitive combustible gas leak alarm system capable of automatically triggering an alert and cutting off the gas supply. Furthermore, the timing accuracy for both after-flame duration and after-glow duration reaches ±0.01 seconds.
Taking the Eyewear Flame Retardancy Tester as an example: its heating temperature range spans 0–700°C with an accuracy of ±20°C; the test duration can be configured via the touchscreen interface from 0 to 9,999 seconds, with a timing resolution of 0.1 seconds; and its external dimensions are approximately 560 × 480 × 720 mm.
The external dimensions of the ZF-621 Vertical Flame Retardancy Tester are 715 mm × 330 mm × 910 mm; when conducting standard tests, the ignition time is typically set to 12 seconds.
