LONN800 handheld density & concentration meter is aportable, battery-powered density and concentration measurement instrument designed for on-site testing in pharmaceutical, chemical, ±0.003g/mL accuracy. Measures density, concentration & Baumé. Portable, battery-powered, 2-second response.
The LONN800 handheld density & concentration meter is a portable, battery-powered density and concentration measurement instrument designed for on-site testing in pharmaceutical, chemical, food & beverage, and laboratory applications. With ±0.003 g/mL density accuracy and ±0.5% concentration accuracy, this compact device delivers laboratory-grade measurements in the field-without the need for benchtop equipment or sample transport.
Equipped with a built-in rechargeable lithium battery (3.7V DC) and integrated charger, the LONN800 operates continuously for extended field sessions. The button-operated interface provides intuitive menu navigation and measurement control, while the backlit LCD display ensures clear readability in low-light conditions. For touchscreen operation, the LONN800A variant is also available.
The LONN800 measures density, concentration, and Baumé degree simultaneously-eliminating the need for separate instruments or manual calculations. Simply immerse the sensor probe into the sample, press the measure button, and read the results directly on the display. No complex setup, no specialized training, no laboratory infrastructure required.
With its rugged, portable design, the LONN800 is ideal for quality control inspectors, process engineers, and laboratory technicians who need rapid, accurate density and concentration measurements across multiple sampling points-whether in the field, on the production floor, or in the laboratory.
Unlike benchtop instruments that tie you to a laboratory, the LONN800 runs on a built-in rechargeable lithium battery. Take it to the sampling point-whether that’s a tank farm, a production line, or a remote field site. No power cords, no extension cables, no laboratory infrastructure. Charge overnight, measure all day.
Why carry three separate devices when one does it all? The LONN800 simultaneously measures density (g/mL), concentration (%), and Baumé degree-with automatic calculation and display. The concentration measurement covers 0-100% range with ±0.5% accuracy, ideal for alcohol content, sugar concentration, acid strength, and solvent purity verification. Switch between measurement modes with a button press. No manual conversions, no lookup tables, no calculation errors.
With ±0.003 g/mL density accuracy, ±0.5% concentration accuracy, and 0.0001 g/mL resolution, the LONN800 delivers measurements comparable to benchtop oscillating U-tube instruments-at a fraction of the size and cost. The 2-second response time means you can test multiple samples rapidly, making it ideal for incoming material inspection, in-process quality checks, and finished product verification.
The LONN800 features a straightforward button interface-no complex menus, no touchscreen smudges, no operating system crashes. Press once to calibrate, press again to measure. The backlit LCD displays all three parameters (density, concentration, Baumé) simultaneously. For touchscreen operation, the LONN800T variant provides an alternative interface.
The LONN800 is designed for real-world use-not just laboratory benchtops. The rugged housing resists accidental drops, splashes, and rough handling. The probe stores securely when not in use. The lithium battery provides hours of continuous operation. Take it to the plant floor, the warehouse, or the field without worry.
The LONN800 supports custom density and concentration range calibration for specific applications. Whether you’re measuring alcohol concentration in pharmaceuticals, sugar content in food products, or acid concentration in chemical processing, configure the instrument to your exact measurement range for optimal accuracy.
| Specification | Value |
|---|---|
| Density Range | 0-2 g/mL (custom calibration available) |
| Density Accuracy | ±0.003 g/mL |
| Density Resolution | 0.0001 g/mL |
| Density Repeatability | ±0.0005 g/mL |
| Concentration Range | 0-100% (calibrated at 20°C) |
| Concentration Accuracy | ±0.5% |
| Concentration Resolution | 0.1% |
| Concentration Repeatability | ±0.2% |
| Baumé Range | 0-145 °Bé (automatic calculation) |
| Response Time | ≤ 2 seconds |
| Measurement Principle | Oscillating U-tube (built-in sensor) |
| Sample Temperature Range | 0-60°C (liquid sample) |
| Ambient Temperature Range | -40-85°C |
| Power Supply | Built-in lithium battery (3.7V DC) + charger |
| Battery Life | ≥ 8 hours continuous operation |
| Display | Backlit LCD (button operation) |
| Interface | Button menu navigation |
| Probe Material | 316L stainless steel (standard) |
| Housing | Rugged industrial plastic, IP54 rated |
| Dimensions | 320 × 75 × 35 mm (approx.) |
| Weight | ~1.2 kg (including battery) |
| Calibration | Single-point or two-point calibration |
| Data Storage | 500 measurement records (with timestamp) |
| Auto-off | Configurable (1-10 minutes) |
Verify alcohol concentration in extracts, measure density and concentration of intermediates, and check finished product specifications on the production floor. The LONN800’s portability enables rapid testing at multiple sampling points-from receiving docks to filling lines-without transporting samples to the quality control laboratory.
Test acid concentration (sulfuric, hydrochloric, nitric), caustic concentration (NaOH, KOH), solvent purity (methanol, ethanol, glycerol), and intermediate density/concentration values. The custom calibration feature allows configuration to your specific chemical concentration curves for maximum accuracy.
Measure sugar concentration (Brix equivalent), alcohol content in beverages, density and concentration of oils/fats, and syrup consistency. The rapid 2-second response enables inline quality checks during production-catching concentration deviations before large batches are affected.
Supplement benchtop instruments with a portable instrument for quick screening, field sampling, and multi-point testing. The LONN800’s accuracy rivals laboratory instruments while offering the flexibility to measure samples at their source-reducing sample handling and transport errors.
Verify supplier material specifications before acceptance. The LONN800 enables rapid density and concentration verification of incoming liquids-ensuring that purchased chemicals, solvents, and intermediates meet specified density and concentration ranges before they enter your process.
The LONN800’s simple operation makes it ideal for educational laboratories and training programs. Students can quickly learn measurement principles without complex setup or fragile laboratory equipment.
The LONN800 operates on the oscillating U-tube principle. A small U-shaped glass tube inside the sensor probe is excited to vibrate at its natural frequency. When filled with sample liquid, the vibration frequency changes in proportion to the liquid density-higher density = lower frequency.
The built-in microprocessor measures the vibration frequency with high precision, calculates the density value, and then computes concentration and Baumé values based on stored calibration curves. The concentration calculation uses pre-programmed density-concentration correlations (e.g., ethanol-water, sucrose-water, sulfuric acid-water) or user-defined custom curves. Temperature compensation is applied automatically using the built-in temperature sensor, ensuring accurate readings across the 0-60°C sample temperature range.
Advantages of oscillating U-tube technology:
| Model Code | Description |
|---|---|
| LONN800 | Standard handheld instrument, button operation, 316L probe |
| LONN800A | Touchscreen version of LONN800 (all other specs identical) |
| LONN800-B | Extended range version (0-3 g/mL measurement range) |
| LONN800-C | High-accuracy version (±0.001 g/mL accuracy) |
| LONN800-D | High-temperature version (sample temp up to 100°C) |
| LONN800-E | Intrinsically safe version (Ex ia, for hazardous areas) |
Standard Accessories:
Contact for Pricing & Technical Support: anna@xalonn.com
Q: What is the difference between the LONN800 (button) and LONN800T (touchscreen) versions? A: The LONN800 features a traditional button-operated interface with physical menu navigation keys-ideal for users who prefer tactile feedback or work in environments where touchscreens may be impractical (gloves, wet conditions). The LONN800T offers a touchscreen interface for faster menu navigation and graphical display options. Both versions share identical measurement specifications (accuracy, range, response time). Choose based on your operational preference.
Q: How long does the built-in lithium battery last on a single charge? A: The LONN800 provides ≥ 8 hours of continuous operation on a full charge (measuring once every 30 seconds). For typical use patterns (intermittent measurements throughout the day), the battery lasts 2-3 full workdays. Charging time is approximately 3-4 hours with the included AC charger. A low-battery indicator appears on the LCD when charge drops below 20%.
Q: Can the LONN800 measure the density of highly viscous liquids like glycerin or honey? A: The LONN800 can measure liquids with viscosity up to 2000 mPa·s (similar to glycerin at room temperature). For higher-viscosity liquids (honey, molasses), the sample should be warmed to reduce viscosity below 2000 mPa·s, or a different measurement method should be used. The sensor probe must be fully immersed and the liquid must be homogeneous for accurate measurement.
Q: Does the LONN800 require temperature compensation? A: Yes, but it’s automatic. The LONN800 has a built-in temperature sensor in the measurement probe. Density readings are automatically temperature-compensated to 20°C (or your configured reference temperature) using stored compensation algorithms. For highest accuracy, allow the sample and instrument to equilibrate to the same temperature before measuring, and ensure the sample temperature is within the specified 0-60°C range.
Q: Can I calibrate the LONN800 for a specific concentration measurement (e.g., alcohol content in pharmaceuticals)? A: Yes. The LONN800 supports custom calibration curves for specific applications. The instrument comes pre-loaded with standard density-concentration correlations for common applications:
Using the PC calibration software (optional), you can create custom concentration vs. density curves based on your reference standards. Once uploaded to the instrument, selecting that calibration curve enables direct concentration readings for your specific application. This is particularly useful for:
Contact our technical support team for assistance with custom calibration curve development.
Q: What is the warranty period for the LONN800? A: The LONN800 comes with a 12-month standard warranty covering manufacturing defects and sensor performance within specifications. Extended warranty options (24 months, 36 months) are available. The warranty does not cover damage from misuse, exposure to aggressive chemicals not specified for the probe material, or normal wear and tear on the probe. Annual factory recalibration is recommended to maintain accuracy.
Q: Can the LONN800 be used in hazardous areas (e.g., chemical plants with flammable atmospheres)? A: The standard LONN800 is not intrinsically safe and should not be used in Zone 0/1/2 hazardous areas. For hazardous area use, order the LONN800-E intrinsically safe version, which is certified Ex ia and suitable for Zone 0/1/2 environments. The Ex ia version has additional safety features including limited energy circuits and spark-proof switches. Contact our hazardous area specialists for certification documentation.
Q: How often should I recalibrate the LONN800? A: For critical measurements (pharmaceutical, finalized product QC), calibrate daily using distilled water. For general use (incoming inspection, process monitoring), calibrate weekly. If accuracy verification shows drift beyond ±0.003 g/mL, recalibrate immediately. Annual factory recalibration with certificate traceable to national standards is recommended to maintain long-term accuracy and warranty validity.
Ready to configure your LONN800? Fill out our RFQ form or email anna@xalonn.com with the following details:
LONNMETER is a trusted manufacturer of industrial density and concentration measurement instruments, serving the pharmaceutical, chemical, food & beverage, laboratory, and research sectors. With ISO9001 certification and global export to 130+ countries, LONNMETER delivers accurate, reliable, and portable measurement solutions for quality control and process monitoring applications.
Contact LONNMETER: anna@xalonn.com
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