API Hydrometers – Measuring the Density of Crude Oil and Petroleum
Our API hydrometers enable the exact determination of the density of crude oil and petroleum products in laboratories, refineries and industrial applications. The API gravity scale describes the specific gravity of crude oil and allows different oil qualities to be assessed in a standardised way. A high-quality API hydrometer delivers reliable, reproducible readings of the API gravity.
API Hydrometers – Measuring the Density of Crude Oil and Petroleum
Our API hydrometers enable the exact determination of the density of crude oil and petroleum products in laboratories, refineries and industrial applications. The API gravity scale describes the specific gravity of crude oil and allows different oil qualities to be assessed in a standardised way. A high-quality API hydrometer delivers reliable, reproducible readings of the API gravity.
API hydrometers built to ASTM standards
Our hydrometers are manufactured to ASTM E100-19 and ASTM E2995-15a and meet international requirements for measuring the density of petroleum. The measuring range of −1 to +101 °API allows even small density differences to be captured precisely, at a resolution of 0.1 °API. The reference temperature of 60 °F keeps the measured values compliant with the standard and directly comparable.
Versions for different requirements
Our API hydrometers come in several versions, either with an integrated thermometer or as a pure density instrument. Models with an integrated thermometer allow direct temperature monitoring during the measurement, which is particularly useful when determining the specific gravity of crude oil under variable conditions.
Accessories and practical use
For the use of API hydrometers, suitable cylindrical glass stands are available as accessories. They keep the hydrometer stable and upright during the measurement and contribute significantly to accurate results. Combined with a high-quality API hydrometer, they enable reliable determination of both the density of petroleum and the corresponding API gravity.
API hydrometers with calibrated quality
If you need a reliable API hydrometer for professional applications, we offer precise, durable instruments. On request, your measuring instruments come with a works calibration certificate or a traceable DAkkS calibration certificate, so all readings remain documented and traceable over the long term.
Unique all-round service by our Ludwig Schneider Messtechnik GmbH
Our DAkkS calibration laboratory is accredited according to DIN EN ISO/IEC 17025:2018 for the measurands temperature and density. We measure temperatures from -196 °C to 1,820 °C and guarantee the highest precision according to all international standards. Together with our extensive product range and our modern calibration laboratory, we offer you a comprehensive all-round service.
Your satisfaction is our drive
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TECHNICAL DATA
| FEATURE | VARIANTS |
|---|---|
| Measuring range | -1 bis +101 °API |
| resolution (accuracy) | 0.1 °API (±0.1 °API) |
| Reference temperature | 60 °F |
| Norms |
ASTM E100-19 ASTM E2995-15a |
| Variants | With integrated thermometers
Without integrated thermometers |
| Thermometer filling | Organic, up to +150 °F
Metallic, up to +220 °F |
| Accessories | Cylindrical stands made of glass |
