Chemical and Petroleum Density Meter
The Rudolph Research Analytical DDM 2909 entry level density meter
Entry level density meter
Peltier temperature control
Viscosity correction
GMP/GLP compliance
Chemical or Petroleum Density Meter
The Rudolph DDM 2909 features:
- Built-in Peltier temperature control of the sample
- Full range viscosity correction
- Reference oscillator
- VideoView for easy bubble detection
- Full GMP/GLP Compliance
- Internet connectivity
The DDM 2909 comes complete with 20 density concentration tables which include Brix, Alcohol, API, and many various laboratory reagents. An unlimited number of additional tables, polynomials, and formulas may be added.
Try Before You Buy
The DDM 2909 is available for a short term trial.
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Density Meters
Measurement
High Viscocity Samples
Easy Clean System
Flexible Method Management
For unique density meter measurement applications, create a sample method using concentration tables, formulas, and polynomials to match the density measurement methods used in your laboratory. The many possible customized sample methods include:
- Baumé of Hydrochloric Acid
- Normality of Sulfuric Acid
- The density of Gases and Aerosols
- Drug-to-Propellant Ratio
- Lead Content
- ppm Gold in Acid
- % Toluene in Heptane
- Mole Fraction of Methanol
Factory installed density meter measurement methods allow for immediate selection of the correct method to match the most common applications.
Oscillating U-Tube with Viscosity Correction
The DDM 2909 Density Meter’s oscillating U-tube with full range viscosity correction and reference oscillator allows long term calibration stability and measurement at all temperatures with a single calibration.
VideoView
VideoView provides superior high resolution visual bubble detection within your samples with live on-screen video viewing. Rudolph’s industry leading 10X magnification aids in identifying bubbles if present in the sample. Full view of the U-Tube makes the DDM 2909 and ideal chemical or petroleum density meter. The video clarity, magnification, and resolution mean no more straining to see small difficult-to-detect air bubbles in your sample.
- % HNO3
- Monomer Solutions
- Potassium Permanganate
- Hydrogen Peroxide
- Molar Solutions of EDTA
- Testing Urine SG
- Sweeteners
- Sodium Hydroxide
Setting up your custom method on your Density Meter is as simple as filling out a few screens.
Computer Windows Based Flexibility
- 32 gigabytes of internal Compact Flash Memory
- Network ready, data may also be saved directly to your server or network
- Internet access is possible directly from the DDM 2909’s touch screen
- Disk Protection feature protects the operating system against malware infections
- Rudolph’s Windows based navigation architecture is intuitive and most operators will never read the manual
- Copy methods, transfer concentration tables, download data, etc., via the USB ports
- Five USB ports allow for quick and easy connection to a mouse, keyboard, printer, bar code scanner, or memory stick
Standard Communication Features
- 5 USB ports (3 Rear, 2 Front)
- 1 Ethernet Cat 5 Port
- 2 RS 232 Ports
- Keyboard, bar code scanner, mouse, network capabilities and memory stick
- Connection to any Windows based printer via USB or Windows print library
- Save measurement data locally and directly to your network
- cGMP/GLP printing
- Sample measurement report editing
Standard Accessories
- Quick start guide
- Rinse / sample waste container
- Filling nozzles
- Luer syringes
- Connecting fittings and tubing
- Built in Drying Pump, used to quickly dry the cell after rinsing and prior to the next measurement, reducing the total sample analysis time. The air drying hose is positioned so as not to become soiled with sample and rinse solvents
Sample Loading Options
Vertical Load
- Sample loading is done with gravity and bubbles float to the top of the syringe. Suitable for left and right handed operators as opposed to traditional manual horizontal injection. Syringe plunger is easier to push with all samples and there is more control over the syringe than with Horizontal Load
- Gives the ability to apply more pressure to the syringe when injecting viscous samples without harming operators
- When a measurement is complete and the syringe is removed, gravity will force the sample down and into the waste jar. As opposed to the traditional horizontal load, if the waste tubing was bent, the sample would pour backwards and spill out on the table
- Preserves the nozzles and nozzle bodies much better since there will not be added pressure from pushing on them when loading a sample. All the pressure will be on the top plate, thus saving in future maintenance costs
Syringe Injection
Samples can be easily loaded in the DDM series density meter by directly injecting your sample into the inlet port of the DDM. You can watch the sample progress through the U-Tube and monitor for bubbles. When you need a closer look, view at 2X, 6X or 10X magnification. When your measurement is complete, simply flush the U-Tube with your choice of solvent and use the convenient air tube to dry the U-Tube. Ideal for laboratories who make only a few measurements per day or users who wish to use very small amounts of sample as only 1ml of sample is required.
Also available the DDM 2910, DDM 2911 and DDM 2911 Plus
Load Assist
- There are two options for sample loading: by manual injection or having the PeriPump pull the syringe for you
- Ideal for pulling the rinse solutions automatically into the system thus making the rinsing part of the operation much easier
- Back pressure mode available for carbonated samples
- Has no added benefit to measurement performance over the Horizontal Load for an experienced user. However it benefits customers that have multiple. inexperienced users as the PeriPump will automatically inject the sample the same way every time
- No change in instrument’s performance when compared to Horizontal Sample Loading or Vertical Sample Loading options
- Most versatile option as it allows multiple ways to inject the sample: automatically through supplied needle, syringe, hard and flexible tubings
Peristaltic Pump
A peristaltic pump draws the sample into the density meter and could also load a refractometer. The user drops a tube into the sample and starts the peri pump from the DDM display. The peristaltic pump draws the sample through one or two instruments and then measures. The measured sample is displaced to waste by the following sample. Ideal for laboratories working with low viscosity samples such as beverages or users who don’t mind utilizing 50 ml of sample for a measurement. A large amount of sample is needed to ensure all of the previous sample is displaced with the new sample.
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Specification
Accuracy: Density 0.0001 g/cm³, temperature 0.05°C
Repeatability (Standard Deviation)*: Density 0.00002 g/cm³, temperature 0.02°C
Resolution (Standard): 0.0001 g/cm³, temperature 0.01°C
Resolution (USR)*: Up to 0.00001 g/cm³ **
Density Range: 0 g/cm³ to 3 g/cm³ (32° F – 212° F )
Temperature Range: 0°C to 70°C (controlled via Peltier)
Pressure Range: 0 to 10 bar (145 psi)
Viscosity Correction: Over the entire range
U-Tube Video Scanning and Magnification: Three magnified video assisted views of the entire cell are available, in 2x, 6x and a 10x magnifications with video scanning. Images may be saved with results for subsequent review
Automatic Bubble Detection: Automatically warns operator of bubbles
Measurement Modes: Continuous, single and multiple
Measurement Technique: Mechanical oscillating U-Tube method
Minimum Sample Volume: Approximately 1mL (depending on the load option)
Wetted Materials: Borosilicate glass, Teflon (PTFE, ECTFE)
Operating System: Windows embedded write protected software
Measurement Time: Typically 30 to 40 seconds after thermal equilibration
Display: Bright 10.4 inch diagonal TFT type LCD with wide viewing angle, anti-glare flat panel touch screen, 300 nits brightness, 800 x 600 pixels, chemical, scratch and spill resistant monitor, the industry’s largest, most flexible, and customizable user interface
Communication Interface: 5 USB ports, 2 RS232 ports, 2 ethernet ports for network connection, 1 HDMI, keyboard, bar code scanner, mouse, network capabilities
Internal Memory: 32 GB non-removable compact flash allowing storage of over 100,000 measurements
Power Supply: 100 to 240 VAC; 50 to 60 Hz
Power Consumption: 120 Watts at peak
Dimensions: (H) 46cm (L) 28cm (W) 53cm (H)
Weight: 24 kg
* According to ISO 5725 and with USR enabled and under ideal conditions
**When optional USR (User Selectable Resolution) is chosen