Thermal stability tester

1 K-WRWDThermal stability testerIntroduction to the principle:

1. The structure and performance of the instrument meet the requirements of GB/T2951.322008 (IEC60811-3-2:1985) and GB/T8815-2008 "Flexible Polyvinyl Chloride Plastics for Wire and Cable" standards, replacing the GB/T2951.7-1997 standard. Suitable for conducting thermal stability time and softening temperature tests on flexible polyethylene plastic insulation sheaths used in the cable industry. The temperature control instrument of this instrument adopts an intelligent instrument with PID self-tuning function, and on this basis, manual optimization is carried out to make the temperature regulation tend to the optimal state.
2. Combined with a magnetic stirring device, the temperature of the working medium in a 1000ml beaker can reach 200 ± 0.5 ℃ uniformly with minimal overshoot. To improve anti-interference ability and meet the requirements of continuous operation under laboratory conditions, a temperature sensor with extremely fast response time is used, and a thermal stability tester is used to meet the test standards.

2、 Reference standards:

GB/T2951.32-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Cables Part 32: Special Test Methods for Polyvinyl Chloride Mixtures Weight Loss Test Thermal Stability Test

GBT8815-2008 Determination of 6.6200 ℃ Thermal Stability Time in Flexible Polyvinyl Chloride Plastics for Wires and Cables

GB/T2951.7-1997 General Test Methods for Cable Insulation and Sheath Materials Part 3: Special Test Methods for Polyvinyl Chloride Mixtures Section 2: Weight Loss Test Thermal Stability Test

IIIThermal stability testerMain technical parameters:

1. Rated voltage: AC220V/50HZ

2. Rated power: 800W

3. Temperature control range: room temperature~300 ℃, PID intelligent temperature control

4. Temperature fluctuation: ± 0.5 ℃

5. Temperature resolution: 0.1 ℃

6. Workstation: Six sets (hold 6 test tubes at once).

7. Glass beaker capacity: 1000ml

8. Time setting: 0~9999h/m/s can be set arbitrarily

9. Safety device: Ultra mild and timed buzzer alarm function

10. Output mode: Solid state relay

11. Mixing method: Magnetic stirring system

12. Box material: All stainless steel, corrosion-resistant

13. Test oil:

Use glycerol (glycerol) or 2 # lubricating oil, insulating oil. (Customer provided)

14. Glass tube:

GB2951 standard: 110mm in length, 5mm in outer diameter, 4mm ± 0.5mm in inner diameter, sealed at one end

GB8815 standard: One end sealed with a length of 95mm and an inner diameter of 12-13mm

15. Test paper: PH test paper, Congo red test paper.

4、 Main configuration list: