Scope of Application

【Operating Instructions】

Used to determine the fire stability of fire-resistant gypsum boards. Also applicable for testing the fire performance of other building materials, decorative materials, and finishing materials.

YS-SPB-1 Type Gypsum Board Fire Stability Tester

Scope of Application
Used to determine the fire stability of fire-resistant gypsum boards. Also applicable for testing the fire performance of other building materials, decorative materials, and finishing materials.

Compliance Standards
Design Standard: GB/T9775-2008 (ISO6308: 1980) "Gypsum plasterboards"

Instrument Features
The specimen is drilled and conditioned under specified environmental conditions. It is then suspended by a support rod between two burner nozzles, which are perpendicular to the specimen surface. Liquefied petroleum gas (LPG) is used as the heat source to supply the two burners of the stability tester; the distance from the burner nozzle to the board surface is 30mm. According to the standard, a load is suspended from the lower end of the specimen, and the burners are ignited. A thermocouple measures the temperature at a distance of 5mm from the board surface. During the initial stage of the test, carbonized facing paper falling onto the thermocouple should be removed without causing the specimen to vibrate. Through adjustment, the temperature is controlled at (800±30)℃ within 3 minutes and maintained at this level throughout the test. Timing starts from when the specimen is exposed to fire until it fractures and fails. The time for each specimen to burn through is recorded; the minimum value among five specimens is taken as the fire stability of that sample group, precise to 1 minute.

Technical Specifications

1. Power Supply: 220V±10%, 50Hz, Power: 180W

2. Ignition: Automatic ignition function

3. Temperature Measurement: Dual thermocouple temperature measurement

4. Display: Digital display for temperature and time

5. Burners: Dual burners, inner diameter Φ9.5mm±0.5mm, length approx. 100mm, equipped with 10mm air adjustment nut. Nozzle diameter (40±1)mm, jet hole diameter (2.5±0.1)mm.

6. Flame Length: Adjustable range 20mm-100mm

7. Timing Range: Flame application time and duration adjustable within 0~99 min 99 sec

8. Control: Automatic control of the test process

9. Recording: Automatically records burning time upon specimen fracture/fall

10. Gas Source: Gas source for the test flame uses coal gas or LPG (it is recommended to use high-quality gas)

11. Flow Rate: Adjustment range 100～1000mL/Min

12. Timing Accuracy (Resolution): 0.1s

13. Test Temperature: 800±30℃, Max temp 900℃, Accuracy Class 1

14. Stabilization Time: <3min to reach (800±30)℃

15. Specimen Size: 300mm (L) × 50mm (W), drilled 25mm from each side edge

16. Suspended Load: 7, 10, 12, 15, 17, 20N (Converted unit suspended load 0.75～2.5kg)

17. Dimensions: 700 (W) × 300 (D) × 600 (H) mm

18. Packing Dimensions: 800 (W) × 420 (D) × 700 (H) mm