Portable Density Meter
The Rudolph Research Analytical DDM29 provides laboratory accuracy wherever you measure
Laboratory level accuracy density measurement
Temperature control for greater accuracy
Superior accuracy to temperature corrected meters
Rugged U-tube avoids costly breakages
Hand Held Density Meter
Density meter measurements are highly sensitive to temperature and simply correcting for temperature alone does not work well for many sample types. The DDM 29 hand held density meter has unmatched capabilities in a fully portable unit.
The problem with most hand held density meters is they drift because they do not control temperature. Most use temperature correction with 2 or 3 digit accuracy which is very prone to drift. Density meter measurements are highly sensitive to temperature and mathematically correcting for temperature may not be good enough for some applications. Only temperature control will result in the accuracy many users require.
Peltier Control
The DDM 29 features Peltier temperature control, not present in most hand held density meters. It uses powerful and compact Peltier technology to control the sample temperature for precise heating and cooling, ensuring stable and accurate measurements to 4 decimal places at either 20° or 25°C
.
Rugged Stainless Steel Double U-Tube
The DDM 29 has a durable, corrosion resistant 316 stainless steel, W-tube for unmatched accuracy, durability, and weight reduction. This replaces the vulnerable glass U-tubes used in other manufactures hand held units. The W-tube facilitates excellent accuracy and measurement speeds:
- 30 seconds for 3 decimal places
- 60 seconds for 4 decimal places
Try Before You Buy
The DDM29 is available for a demonstration or a short term trial.
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User Friendly Touch Screen Display
The 7 inch touch screen features a simple user interface that is easy to read in bright or dark environments. An internal barometer facilitates automatic calibration.
Portability and Flexibility
The Lithium Ion battery can be charged in approximately 2 hours providing up to 4 hours of constant measurements under heavy usage or 8 hours of normal usage. A charging station is included for convenient stationary charging.
Flexible Method Management
A measurement method is created exactly for unique measurement applications. You may use concentration tables, formulas
and polynomials to match the measurement methods used in your laboratory or field application. Factory installed measurement methods cover a wide group of industries and applications. The DDM29 is factory configured with over 50 density and concentration tables, such as Brix, % Alcohol, API, and most common chemicals. Additional tables, polynomials, and formulas may be added.
- Essential Oils
- Chemicals
- Beer, wort, and fermentation monitoring
- Raw material soft drink monitoring
- Monomers, Polymers and Elastometers
- Pharmaceutical raw materials and finished products
- Wort, juice, fermentation, spirits safe monitoring
- Blending, bottling, spirits and liquors packaging
- Sulfuric Acid in lead-acid batteries
- Adhesives, glues
- Agriculture, chemicals and fertilizers
- Colloids, nanotechnology
- Surfactants, detergents
- Emulsions
- Paints, Inks, Toners
- Organic, inorganic chemicals
- Fuel cells, power generation, sustainable fuels
- Soft drinks, juices, tea, coffee
- Petroleum samples according to ASTM methods
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Specification
Accuracy: Density: 0.0005 g/cm3*, temperature: ±0.1°C
Repeatability (Standard Deviation): Density: 0.0001 g/cm3, temperature: 0.02 °C
Resolution, Density: 0.0001 g/cm3, temperature: 0.01°C
Temperature Selectable: 20 or 25 °C ±0.01°C
Temperature Control (Controlled via Peltier): 20 or 25°C. Selectable up to 0.001°C
Ambient Temperature: -10 to + 55°C
% Concentration Scales: Unlimited
Ambient Temperature Limit: 0 to 35°C
Pressure Range: 0 to 10 bar (145 psi )
Measurement Modes: Continuous, single and multiple
Measurement Technique: Mechanical oscillating double u-tube method
Measurement Range: 0-3g / cm3
Minimum Sample Volume: Approximately 1mL
Wetted Materials: 316 Stainless steel, Teflon PTFE, ECTFE, PVDF
Supported Scales: Density, specific gravity, alcohol tables, sugar/extract, API functions, H2SO4 tables, acids, bases, organic and inorganic chemicals
Operating System: Android OS
Measurement Time: Typically 30 – 40 seconds after thermal equilibration
Display: Bright LED 7” touch screen.
Communication Interfaces: USB-C, WiFi, Bluetooth, manual entry, RFID, and barcode for entering sample IDs are all standard
Printing: Wireless via Airprint
Internal Memory: Up to 3,000 Measurements
Power Consumption: 2 hours charging provides up to 4 hours of measurements in heavy usage or 8 hours under normal usage
Protection Class: IP54
Dimensions: 18.49 cm (L) x 12.27 cm (W) x 34.52 cm (H)
Weight: 1.5 kg