The Electrical Stability Meter is a sine wave instrument. It's precise, compact, and portable. Used routinely in the field and in the laboratory to measure the relative electric strength of drilling fluids with a continuous oil phase. The electrical stability tester is composed of testing instruments and probes, and it is powered by four common 9-volt alkaline batteries. The dielectric breakdown voltage is the key to drilling fluid conduction, and the DC power supply of the battery provides an AC voltage to the electrodes at low frequencies. The components of the instrument include a test unit, electrode probes, two calibration blocks, a power cord, and four batteries.
Technical Parameters: Operating temperature range: 0-50°C (32-122°F) Probe maximum test temperature: 120 ± 5ºF (49 ± 3°C) Storage temperature range: -20--70°C (-4--158°F) (without battery) Accuracy: ±2% of expected value Automatic power-off time: 1 minute Output frequency: 340±2Hz Output waveform: sine wave Output voltage range: 0-2025V±25V (effective value 1432V) Demulsification current: 61 microampere Voltage display: digital liquid crystal display Voltage rise rate: 150±10V/sec Power supply: 4 9V alkaline batteries Battery life: about 260 tests Probe and cable length: 85cm (3.35in) Probe electrode spacing: 0.155cm (0.061in)
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