Alcohol

An alcohol meter, or alcoholometer, is a device designed to measure the alcohol concentration in a solution.

Importance of Accuracy

A 0.5% error in alcohol percentage can make a world of difference—both in terms of regulatory compliance and customer satisfaction. Accurate measurement ensures consistency, helps detect production issues, and strengthens the brand’s reputation.

Main Types of Alcohol Meters

• Digital Meters: Easy to use, fast, accurate, and expensive.

• Hydrometers: Inexpensive and simple, but require skill to operate.

• Spectrophotometers: Require reagents and frequent calibration but allow deeper analysis.

ALM-155 Alcohol Meter – Technical Specifications

A compact, high-performance benchtop density meter with a capillary oscillating tube for the analysis of wine, spirits, and beer.

The ALM-155 is a dedicated and compact device that accurately measures density, specific gravity, and alcohol content.
Result display: Accuracy of 0.01% in alcohol by volume and 0.00001 g/cm³ in density. The measurement temperature is controlled via a Peltier thermostat and set to 20°C (68°F).

Key Features

• One-Touch Measurement with Small Sample Volume
  Includes a peristaltic pump for automatic sampling, requiring only ~8 mL per test. The test takes just 2–4 minutes. An optional syringe is available for high-viscosity samples.

• Easy Calibration and Maintenance
  Calibration uses only distilled water. The measurement cell can be cleaned with water or household detergent. Sampling tubes are the only replaceable part and are user-replaceable.

• Automatic Data Storage
  The device stores up to 100 results. It can connect to an optional printer, USB drive, or transfer data to PC software via RS-232C cable.

Measurement Accuracy (Repeatability)

• Alcohol: ±0.05%

• Density: ±0.00005 g/cm³

• Specific Gravity: ±0.00005

• Brix/Babo: ±0.002

• Baume: ±0.001

Resolution

• Alcohol: 0.01%

• Density: 0.00001 g/cm³

• Temperature: 0.01°C

Operating Conditions

• Measurement Temperature: 20°C

• Ambient Temperature: 5–35°C

• Humidity: Up to 85% (non-condensing)

• Minimum Sample Volume: ~8 mL

• Measurement Time: 2–4 minutes

• Display: LCD with backlight

Sampling Methods

• Automatic via pump

• Manual using optional syringe

Data Storage and Connectivity

• Storage: Up to 100 results

• Interfaces:

  • RS-232C (printer and PC)

  • USB (flash drive, keyboard)

• Data Export Format: CSV

• Power Consumption: ~30W

Physical Specifications

• Dimensions: 270 × 402 × 163 mm

• Weight: ~10 kg

• Certifications: CE, RoHS2, EMC, LVD

Primary Applications

• Wineries
  Measuring alcohol in wine is a legal requirement. This device enables precise testing during fermentation and production stages.

• Grape Must
  Pre-fermentation density tests allow prediction of the final alcohol level.

• Enology Laboratories
  Provides analytical support for wineries, including legally valid analysis certificates.

• Distilleries and Spirits
  Designed for testing high alcohol concentrations—up to 100%.

• Beer Production
  Density and specific gravity tests are critical for beer quality assurance.

• Vinegar Production
  Monitoring alcohol concentration during oxidation helps assess the conversion to acetic acid.