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HCT900 Serial Temperature Control Unit is special designed for the measuring of insulation oil (liquid) tan delta dissipation factor and relative dielactric constant.
1. Two single chip micyoco control the internal heater and external heater separately.
2. Adopt PID fuzzy logic control on the process control to comb-out the interference from Grid and environment temperature.
3. High accuracy on temperature adjustment.
4. High speed on temperature control.
5. Digit keyboard input methods make sure of zero setting error.
6. Adopt lazer-coupling isolation on input and output end.
7. Self diagnose function.
8. Safety and trustable.

HC90 Serial tan delta & dissipation factor measuring electrode, also named: oil cup, is specially designed for power cable oil, power transformer oil, HV capacitor...- liquid insulation material dielectric loss and dissipation factor, relative dielectric constant. direct current resistance rate measurement.
On the function, HC90 Serial oil cup can take the place of TETTEX2903, which also adopt IEC relative standard.
It's one special designed shield electrode, the distance between electrode is 2mm, cylinder type air capacitor, with the function of cpnstrain and eliminate stray capacitance and improve measuring accuracy.