ASXANJBR
Brand: Koehler Instruments
Category: Density
Industry: Material Science & Chemistry, Petroleum & Petrochemicals, Cement, Iron & Steel, Paint, Pigments & Polymers
The Constant Temperature Hydrometer Bath is a precision-controlled, compact thermostatic bath designed for density and specific gravity measurements of petroleum products using standard ASTM hydrometers. Built with robust stainless steel and insulated double-wall construction, it ensures uniform temperature distribution and exceptional stability (±2°F / ±1°C) for reliable and repeatable results.
Engineered to deliver consistent temperature control and stability, the Constant Temperature Hydrometer Bath accommodates one standard 2" × 15" (51 × 380 mm) hydrometer cylinder with base. The bath enables accurate density, relative density (specific gravity), or API gravity measurements in accordance with ASTM D287, D1298, D6074, and related methods.
The bath incorporates a 500W copper immersion heater and a hydraulic thermoregulator, maintaining precise test temperatures up to 210°F (99°C). Its variable-speed magnetic stirrer ensures uniform temperature distribution throughout the bath medium, while the temperature control dial allows fine adjustments during operation.
Constructed with an insulated double-wall design, stainless steel tank and shelf, and a durable finished steel exterior, the instrument combines long-lasting performance with compact, space-saving functionality. The hydrometer jar extends 1½" (38 mm) above the bath surface, allowing easy observation of readings.
Thermostatically controlled for accurate, stable temperature operation
500W copper immersion heater with hydraulic thermoregulator
Wide operating range: Ambient to 210°F (99°C)
Temperature stability: ±2°F (±1°C)
Accommodates one standard 2" × 15" (51 × 380 mm) hydrometer cylinder
Variable-speed magnetic stirrer for uniform temperature distribution
Insulated double-wall construction for thermal efficiency
Durable stainless steel tank and internal shelf
Compact, space-saving design suitable for laboratory benches
Easy viewing of hydrometer readings – jar extends above bath top
Independent on/off switches for heater and motor operation
Precision temperature control for accurate hydrometer readings.
The Constant Temperature Hydrometer Bath provides reliable, stable thermal conditions for density and specific gravity determinations in petroleum laboratories. Its compact design, stainless steel build, and efficient hydraulic thermoregulation make it the preferred choice for ASTM-compliant hydrometer testing in refineries, QA labs, and research facilities.
| Parameter | Specification |
|---|---|
| Temperature Range | Ambient to 210°F (99°C) |
| Temperature Stability | ±2°F (±1°C) |
| Heating Element | 500W copper immersion heater |
| Temperature Control | Hydraulic thermoregulator with adjustable dial |
| Bath Medium | 2 gal (7.57 L) water |
| Stirring System | Variable-speed magnetic stirrer |
| Hydrometer Cylinder Capacity | One standard 2" × 15" (51 × 380 mm) cylinder |
| Tank Material | Stainless steel with insulated double-wall |
| Exterior Finish | Durable painted steel |
| Electrical Requirements | 115V 60Hz, 1-phase, 4.3A / 230V 50/60Hz, 1-phase, 2.2A |
| Bath Interior (dia × h) | 6" × 16½" (15 × 42 cm) |
| Overall Dimensions (dia × h) | 9" × 22" (23 × 56 cm) |
| Net Weight | 20 lbs (9.1 kg) |
Petroleum and crude oil density determination using ASTM hydrometers
API gravity and specific gravity measurement for fuel and lubricants
Calibration and verification of hydrometers under controlled conditions
Laboratory and refinery quality assurance testing
Temperature-controlled testing of petrochemical samples
Educational and research laboratories for density and buoyancy experiments
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