| Item: |
131-50 |
| Description: |
Emulsion Stability Tester with Calibration Standard, Batteries, and
Case |
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. The resulting current remains low until a threshold voltage (61±5µA) is reached. Then the current rises very rapidly. The point at which the fluid becomes conductive is the dielectric breakdown voltage, or the “ES” of the fluid, and is the voltage in peak volts measured when the current reaches the 61 µA point. The API approved sine wave circuitry results in a more efficient energizing of the fluid and generates considerably lower ES values than the old style “spikey” waveform instruments. The symmetry of the sinusoidal signal inhibits the buildup of solids on the electrode faces and enhances reproducibility. To further enhance reproducibility and as a safety factor, OFITE introduced push button automatic voltage ramping at a fixed ramp rate. The unit consists of a meter, probe electrode, and calibration standards, and operates on four readily obtainable 9-Volt batteries.
Size: 9.5 x 6.5 x 3.5 inches (24.1 x 16.5 x 8.9 cm)
Weight: 2 lbs 15 oz (1.3 kg)
Components:
#131-01 Probe with Cable
#131-51 Calibration Standard for ES Meter. High/Low
#131-52
Battery Holder, 9-Volt
#131-53 Switch - Push Button - On / Off
#131-54 Switch Boot
#147-02 Battery, 9-Volt Alkaline
Optional:
#131-50-SP
One Year’s Spare Parts for 131-50
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![[Image of 131-50]](131-50.JPG)