Emulsion Stability Tester

The Electrical Stability (ES) of an oil-based drilling fluid is a property related to its emulsion stability and oil wetting ability. The OFITE Emulsion Stability Tester determines ES by applying a precision voltage-ramped sinusoidal signal across a pair of parallel flat plate electrodes that are immersed in the fluid.

Features

• API recommended sinewave circuitry
• Symmetry of the sinusoidal signal inhibits the buildup of solids on the electrode faces and enhances reproducibility.
• Push button automatic voltage ramping at a fixed ramp rate
• Includes meter, probe electrode, calibration standards, and four 9-volt alkaline batteries

Specifications

Meter

• Wave form: Sine, < 5% total harmonic distortion
• AC Frequency: 340 ± 10 Hz
• Output Units: Peak Volts
• Ramp Rate: 150 ± 10 Volts per second, automatic operation
• Minimum Output Range: 3 - 2,000 Volts (Peak)
• Trip Current: 61 ± 5 µA
• Size: 9.5” × 6.5” × 3.5” (24.1 × 16.5 × 8.9 cm)
• Weight: 2 lb 15 oz. (1.3 kg)
• Shipping Size: 11” × 11” × 7” (28 × 28 × 18 cm)
• Shipping Weight: 10 lb (4.54 kg)

Electrode

• Housing: Material resistant to oil mud components up to 220°F (105°C)
• Material: Corrosion-resistant metal
• Diameter: 0.125” ± 0.001” (3.18 ± 0.03 mm)
• Spacing (gap): 0.061” ± 0.001” (1.55 ± 0.03 mm) at 72°F (22°C)

Components

• #131-01: Probe
• #131-51: Calibration Standards, High and Low
• #147-02: Battery, 9 Volt, Alkaline

Optional

• #131-50-SP: Spare Parts Kit
• #154-01: Thermometer, 5” Stem, Metal Dial, 0° - 220°F (-10° - 100°C)
• #154-22: Thermometer, Pocket, 5” Stem, 1” Dial, 0° - 220°F

Part Number

• #131-50