- Home
- Hot Sales
- Products
- Application
- About Us
- Support
- News
- Contact
| Quantity: | |
|---|---|
The ZG-MD90 Fully Automatic Liquid Density Meter reimagines density measurement with its exceptional accuracy (±0.0001 g/cm³) and fully automated workflow, ideal for industries where liquid density is a critical quality parameter. Combining U-tube oscillation technology with advanced temperature compensation, this meter delivers rapid, reliable results for both Newtonian and non-Newtonian fluids.
The instrument features a self-priming pump system that eliminates air bubbles, ensuring consistent sample loading into the precision-mechanized oscillation tube. Its touchscreen interface guides users through calibration, measurement, and data management, while the compact design saves valuable lab space without compromising performance.
1. Ultra-High Measurement Precision
Using a quartz U-tube oscillator with a frequency stability of ±0.001 Hz, the ZG-MD90 achieves density measurements accurate to four decimal places (0.0001 g/cm³). The built-in Peltier temperature controller maintains sample temperature at setpoints (5–95°C) with ±0.05°C stability, eliminating thermal expansion errors.
2. Fully Automated Sample Handling
The integrated pump system aspirates 2–5 mL of sample directly from containers, with automatic rinsing and drying cycles between measurements. A barcode scanner reads sample IDs and pre-configured method parameters, reducing manual data entry errors.
3. Multi-Parameter Analysis
In addition to density, the meter calculates relative density (API gravity), Baume degrees, and concentration (via built-in conversion tables for common substances like sulfuric acid and ethanol). The user can create custom calculation formulas for proprietary mixtures.
4. Robust & Chemical-Resistant Design
The wetted parts, including the pump diaphragm and oscillation tube, are constructed from PEEK and sapphire, ensuring compatibility with corrosive liquids like concentrated acids, bases, and organic solvents. An automatic leak detection system shuts down the pump to prevent damage.
In refineries, the ZG-MD90 measures the density of crude oil, gasoline, and lubricants, supporting compliance with ASTM D4052 and ISO 12185 standards. The automatic temperature compensation ensures accurate results regardless of ambient conditions, critical for custody transfer calculations.
For drug formulation, the meter verifies the density of liquid APIs and excipients, ensuring batch uniformity in solutions and emulsions. Cosmetic labs use it to analyze the density of creams, lotions, and perfumes, optimizing product consistency and sensory properties.
In breweries and distilleries, the ZG-MD90 measures the density of wort and spirits to determine alcohol content and extract concentration, replacing time-consuming manual hydrometers. It also ensures compliance with food safety regulations by testing the density of syrups and sauces.
Research teams use the meter to characterize novel fluids, such as ionic liquids and nanofluids, by measuring density as a function of temperature and concentration. The data export capabilities (USB, Ethernet) facilitate integration with computational models for fluid dynamics studies.
1. Daily maintenance of electrodes
After each use, rinse with distilled water and avoid long term immersion in protein solutions. The glass electrode should be soaked in a pH4 buffer solution, and the reference electrode should be regularly replenished with the internal filling solution.
2. Cleaning and calibration of the burette
After use, empty the burette in a timely manner and rinse it with distilled water 3 times. If the titrant contains crystalline substances (such as AgNO₃), dissolve them with warm water and then rinse. Regularly calibrate the volume accuracy of the burette with a standard solution.
3. Maintenance of the automatic sampler
Clean the turntable and the sampling needle every week to prevent residual samples from drying and blocking the pipeline. Check the lubrication of the mechanical arm joints every month and add special lubricant if necessary.
Fully-automatic liquid densimeter | |
Model | ZG-MD90 |
Density resolution | 0.00001g/cm3 |
Repetitiveness | ±0.00005g/cm3 |
Accuracy | ±0.0001g/cm3 |
Test range | 0-3g/cm3 |
Temperature resolution | 0.01℃ |
Repetitiveness | ±0.1℃ |
Temperature control mode | Peltier control temperature |
Temperature control range | 5℃ to 65℃ |
Test method | U-shaped vibration tube method |
Sampling capacity | About 2 mL injected manually and about 3 mL automatically by automatic pump |
Sampling method | The syringe will be injected manually or automatically sampled by a built-in injection pump |
Cleaning function | Automatic cleaning (compatible with manual work) |
Video function | yes |
Measuring time | Manual operation for 1~4 minutes, and automatic program for 2~10 minutes (according to the actual temperature of the sample) |
Display screen | 10-inch HD touch-screen display |
Display value | Density, relative density, temperature, concentration, Baume degree |
Measuring method | Store 100 sets of custom measurement methods, including the measurement parameters for each sample |
Stability judgment | According to measurement accuracy and time, stability time can be set voluntarily |
Concentration conversion | Enter the density and concentration tables or conversion formulas to automatically convert the concentration values |
Statistical calculation | The 100 sets of test values are automatically saved, and the average, maximum and minimum values can be automatically calculated |
Output method | Standard: RS232, RJ 45, SD card, U disk, USB can be customized |
wifi printing | yes |
Optional function | User management, audit tracking, electronic signature, downloading file verification high level protection MD5, various file downloading formats such as PDF and Excel, other functions can be customized according to requirements. |
The ZG-MD90 Fully Automatic Liquid Density Meter reimagines density measurement with its exceptional accuracy (±0.0001 g/cm³) and fully automated workflow, ideal for industries where liquid density is a critical quality parameter. Combining U-tube oscillation technology with advanced temperature compensation, this meter delivers rapid, reliable results for both Newtonian and non-Newtonian fluids.
The instrument features a self-priming pump system that eliminates air bubbles, ensuring consistent sample loading into the precision-mechanized oscillation tube. Its touchscreen interface guides users through calibration, measurement, and data management, while the compact design saves valuable lab space without compromising performance.
1. Ultra-High Measurement Precision
Using a quartz U-tube oscillator with a frequency stability of ±0.001 Hz, the ZG-MD90 achieves density measurements accurate to four decimal places (0.0001 g/cm³). The built-in Peltier temperature controller maintains sample temperature at setpoints (5–95°C) with ±0.05°C stability, eliminating thermal expansion errors.
2. Fully Automated Sample Handling
The integrated pump system aspirates 2–5 mL of sample directly from containers, with automatic rinsing and drying cycles between measurements. A barcode scanner reads sample IDs and pre-configured method parameters, reducing manual data entry errors.
3. Multi-Parameter Analysis
In addition to density, the meter calculates relative density (API gravity), Baume degrees, and concentration (via built-in conversion tables for common substances like sulfuric acid and ethanol). The user can create custom calculation formulas for proprietary mixtures.
4. Robust & Chemical-Resistant Design
The wetted parts, including the pump diaphragm and oscillation tube, are constructed from PEEK and sapphire, ensuring compatibility with corrosive liquids like concentrated acids, bases, and organic solvents. An automatic leak detection system shuts down the pump to prevent damage.
In refineries, the ZG-MD90 measures the density of crude oil, gasoline, and lubricants, supporting compliance with ASTM D4052 and ISO 12185 standards. The automatic temperature compensation ensures accurate results regardless of ambient conditions, critical for custody transfer calculations.
For drug formulation, the meter verifies the density of liquid APIs and excipients, ensuring batch uniformity in solutions and emulsions. Cosmetic labs use it to analyze the density of creams, lotions, and perfumes, optimizing product consistency and sensory properties.
In breweries and distilleries, the ZG-MD90 measures the density of wort and spirits to determine alcohol content and extract concentration, replacing time-consuming manual hydrometers. It also ensures compliance with food safety regulations by testing the density of syrups and sauces.
Research teams use the meter to characterize novel fluids, such as ionic liquids and nanofluids, by measuring density as a function of temperature and concentration. The data export capabilities (USB, Ethernet) facilitate integration with computational models for fluid dynamics studies.
1. Daily maintenance of electrodes
After each use, rinse with distilled water and avoid long term immersion in protein solutions. The glass electrode should be soaked in a pH4 buffer solution, and the reference electrode should be regularly replenished with the internal filling solution.
2. Cleaning and calibration of the burette
After use, empty the burette in a timely manner and rinse it with distilled water 3 times. If the titrant contains crystalline substances (such as AgNO₃), dissolve them with warm water and then rinse. Regularly calibrate the volume accuracy of the burette with a standard solution.
3. Maintenance of the automatic sampler
Clean the turntable and the sampling needle every week to prevent residual samples from drying and blocking the pipeline. Check the lubrication of the mechanical arm joints every month and add special lubricant if necessary.
Fully-automatic liquid densimeter | |
Model | ZG-MD90 |
Density resolution | 0.00001g/cm3 |
Repetitiveness | ±0.00005g/cm3 |
Accuracy | ±0.0001g/cm3 |
Test range | 0-3g/cm3 |
Temperature resolution | 0.01℃ |
Repetitiveness | ±0.1℃ |
Temperature control mode | Peltier control temperature |
Temperature control range | 5℃ to 65℃ |
Test method | U-shaped vibration tube method |
Sampling capacity | About 2 mL injected manually and about 3 mL automatically by automatic pump |
Sampling method | The syringe will be injected manually or automatically sampled by a built-in injection pump |
Cleaning function | Automatic cleaning (compatible with manual work) |
Video function | yes |
Measuring time | Manual operation for 1~4 minutes, and automatic program for 2~10 minutes (according to the actual temperature of the sample) |
Display screen | 10-inch HD touch-screen display |
Display value | Density, relative density, temperature, concentration, Baume degree |
Measuring method | Store 100 sets of custom measurement methods, including the measurement parameters for each sample |
Stability judgment | According to measurement accuracy and time, stability time can be set voluntarily |
Concentration conversion | Enter the density and concentration tables or conversion formulas to automatically convert the concentration values |
Statistical calculation | The 100 sets of test values are automatically saved, and the average, maximum and minimum values can be automatically calculated |
Output method | Standard: RS232, RJ 45, SD card, U disk, USB can be customized |
wifi printing | yes |
Optional function | User management, audit tracking, electronic signature, downloading file verification high level protection MD5, various file downloading formats such as PDF and Excel, other functions can be customized according to requirements. |
