A novel high-precision electrical stability tester

Low-power high-precision electrical stability testing apparatus of the present invention provides an oil-based drilling fluid for the apparatus includes test instruments, electrodes, power source line, sample cup, lid and some other sample, with a new design ideas, the circuit It comprises a main control circuit, a power management circuit, the keyboard display circuit, a sine wave generating part of the circuit, the peak voltage detecting circuit, the current detection circuit quickly. The main innovation is the use of low-power embedded CPU achieve control and monitoring of the various components; high-precision sine wave generating circuit 340 ± 0.05HZ sine wave signal, and by conversion, signal conditioning, and other step-up transformer output 0- 2000VAC voltage; high-precision current detecting circuit sampling and rapid breakdown achieve rapid detection of the signals containing singular points. The present invention employs four 9V alkaline battery, low power consumption, the measurement than 1,000 times, the measurement accuracy of up to 0.1%.