Portable Liquid Density Meter for Beverage Petroleum and Chemical Process Quality Control

Product Introduction

For beverage QC labs, refinery sampling teams and chemical process engineers, accurate density data is the basis of concentration control, product release and tank inventory calculations. Traditional hydrometers depend on operator skill, require large sample volumes and break easily, while benchtop oscillating densitometers are confined to the lab and create logistics delays for shop-floor measurements.

The HM Instruments HM-DS handheld liquid density meter brings benchtop-grade U-tube oscillation accuracy to the production floor. With a measurement range of 0.0000–3.0000 g/cm³, accuracy of 0.001 g/cm³ and a 1.0–2.3 ml sample requirement, the HM-DS gives operators a single-hand, walk-up workflow for density, temperature, alcohol content, sugar content, sulfuric acid concentration and Plato concentration. Built-in NFC, barcode scanning and Bluetooth printing remove manual transcription errors, while quick-release pump bodies and PTFE / quartz wetted parts cope with aggressive media. The HM-DS is designed for users who need lab-equivalent results in field, in-line and routine QC scenarios.

Applications

• Beverage and brewing — alcohol, sugar and Plato concentration of beer wort, juice, syrup and finished beverages

• Petroleum and refined fuels — density and relative density of crude oil, diesel, gasoline and lubricants in line with ASTM D4052

• Chemical manufacturing — sulfuric acid, electrolyte, glycol, surfactant and intermediate density tracking for batch release

• Pharmaceutical QC — density verification of solvents, syrups and active pharmaceutical ingredient solutions

• Environmental monitoring — quick density screening of effluent, brine and process water

• Education and training — undergraduate physical chemistry and food science laboratories

Key Features & Advantages

1. U-tube oscillation principle delivers 0.001 g/cm³ accuracy without operator subjective reading errors

2. Wide measurement range 0.0000–3.0000 g/cm³ covers light fuels through concentrated acids in one device

3. Sample volume only 1.0–2.3 ml — significant savings for high-value, hazardous or scarce samples

4. Built-in alcohol, sugar, sulfuric acid and Plato concentration tables; user-defined formulas supported

5. Automatic temperature compensation references built-in pure water density tables for traceable results

6. 2.4-inch full-color LCD shows density, temperature and concentration on a single readable screen

7. Ergonomic grip enables true single-hand operation in tight production environments

8. NFC tag reader and barcode scanner eliminate manual sample ID entry mistakes

9. Built-in suction pump with single-button sampling controls volume and rate consistently

10. Quick-release pump body and PTFE / quartz glass wetted parts simplify cleaning between samples

11. 1000 on-board records with USB export to flash drive or PC for traceability and audit

12. Optional Bluetooth thermal printer for instant on-site reports

13. Optional Wi-Fi for direct upload to laboratory cloud platforms

14. Compliant with ISO 12185, ASTM D4052-18, JIS K 2249, GB/T 29617-2013 and SH/T 0604-2000

15. 3.7 V / 3000 mAh lithium-ion battery supports a full shift of field measurements

16. Dimensions 150×57×271 mm and 350 g main unit weight — fits standard transport cases

Technical Specifications

FAQ

Q1: How does U-tube oscillation density measurement compare with traditional hydrometers?

A: Hydrometers rely on operator-read scale lines and depend on sample temperature, surface tension and meniscus reading. The HM-DS measures the resonance frequency of a small oscillating U-shaped tube filled with the sample, which is a direct mass-volume relationship. This eliminates parallax errors, requires only 1–2.3 ml of sample, and delivers 0.001 g/cm³ accuracy traceable to ISO 12185 and ASTM D4052-18.

Q2: Can the HM-DS measure concentrated sulfuric acid and other corrosive samples?

A: Liquid-contact components are quartz glass and PTFE (polytetrafluoroethylene), giving good resistance to common acids, alkalis and organic solvents. The quick-release pump body simplifies cleaning between samples. Always confirm chemical compatibility for highly aggressive or HF-containing samples before use.

Q3: Does the HM-DS show alcohol percentage and Plato directly, or only density?

A: Both. The instrument has built-in conversion tables for alcohol content, sugar content (°Brix-equivalent), sulfuric acid concentration and Plato concentration. After a density measurement the corresponding concentration value is shown on the same screen. Users can also build custom concentration formulas for proprietary products.

Q4: How is the instrument calibrated and how often should it be calibrated?

A: The HM-DS uses an internal pure water density table for primary reference. Routine air / pure water two-point calibration takes a few minutes, and the included three-bottle density calibration solution kit supports verification at additional points. For QC labs we recommend a daily verification with pure water and a periodic full calibration cycle of 3–6 months.

Q5: Can measurement results be exported to LIMS or printed on site?

A: Yes. Up to 1000 records are stored on the device, and data can be exported via USB to a flash drive or PC. The optional Bluetooth thermal printer (55×30 mm paper) prints results immediately at the sampling location, and optional Wi-Fi upload allows direct integration with laboratory or production cloud platforms.

Q6: What is the working temperature range and battery runtime?

A: The unit operates from 0–50 °C ambient at 0–80% RH and below 2000 m altitude. The 3.7 V / 3000 mAh lithium-ion battery supports a full working shift; the included 5 V / 2 A power adapter charges the device. The instrument should be charged at least once every six months when stored.

Q7: Which national or international standards does the HM-DS conform to?

A: The measurement principle and method comply with ISO 12185 (oil density), ASTM D4052-18 (digital density meter), JIS K 2249 (petroleum products density), GB/T 29617-2013 (laboratory glassware density meter) and SH/T 0604-2000 (petroleum and lubricants density).

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