Technical parameters:
1. Measurement range: 0~600 penetrations;
2. Resolution: 0.1 penetrations;
3. Timing selection: 0~60 s; Timing error is less than ±0.1 s;
4. Heating power: 200 W;
5. Temperature controlling accuracy: 25±0.1 ℃; (The ambient temperature should not be higher than 20 ℃);
6. Data storage: 30 groups;
7. Constant temperature bath: made of harden glass;
8. Stirrer: a magnetic stirrer;
9. Standard needle: 2.5±0.05g; as per GB/T4509, and T0604;
10. Up and down holder: it contains fine adjustment and coarse adjustment assembly to let needle tip just contact with sample surface;
11. Power supply: AC 220V±10％, 50 Hz;
12. Memory function: it can save 30 groups of test data;
13. Others: Equipped with light source and a magnifier, so it is convenient to be operated; the thermostatic device in the water bath is optional;
