ROBINSON API Combined Hydrometer with Thermometer delivers precision you can trust in every test. This 15-inch thermohydrometer is engineered for accurate oil density measurements, with a built‑in thermometer at the bottom for real‑time temperature data during testing.
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API-scale precision: Calibrated to the API scale with 0.1‑inch divisions, spanning 39 to 51 on the gravity scale.
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Modulus accuracy: Specified as Modulus 141.5 at 60°F to ensure dependable readings across test conditions.
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Solid alloy ballast: Designed for quick penetration to the setting point while minimizing trapped air bubbles for clean, reliable results.
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Built-in thermometer: Temperature sensor integrated at the bottom provides immediate temperature readings without removing the device from the sample.
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Certified instruments: Certification available upon request to support compliance and traceability in professional workflows.
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NIST documentation: Each hydrometer is certified at three points on the gravity scale, with accompanying documentation for transparency and accuracy.
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Wide operating range: Reliable measurements across a temperature range of 0–150 °F.
Designed for versatility, the ROBINSON Hydrometers excel in laboratories, refineries, and research facilities where precise oil density measurements are essential. They’re a trusted choice for professionals in the petroleum industry and also serve well in educational settings for teaching practical physics and thermodynamics. With ROBINSON, you gain accuracy, reliability, and a proven standard of quality that supports efficient, confident testing.
