eravisc X is the world‘s smallest and most rugged kinematic viscometer measuring viscosity with lab-grade precision meeting ASTM D445 and ASTM D7042. Its revolutionary viscosity cell is combined with eralytics unique x-oscillating metal U-tube density cell. This allows an independent high-precision density measurement in full compliance with ASTM D4052 and ISO 12185.
eravisc X at a glance
360° View
Xtra easy & fast
The fully automated measurement of the kinematic viscosity at 40 °C or at 100 °C takes only 1 minute. Results are displayed on the large color touchscreen and can be printed, exported via USB or directly transferred to a PC or LIMS via an Ethernet connection. With its unique sample introduction from the top the viscometer eravisc X is equally easy to operate for right-handed and left-handed persons.
Xtra rugged
The viscometer eravisc X is built in a corrosion-resistant aluminum housing. Its robustness and reliability make it the ideal solution for daily viscosity measurements in the laboratory as well as directly in the field to immediately prove specification or detect contamination, and oil degradation. eravisc X is the perfect solution for highly accurate testing even under extreme conditions.
Xtra accurate & compact
eravisc X’s revolutionary capillary measuring cell is a real game changer for high-precision kinematic viscosity testing at any temperature between 15 °C and 100 °C. Latest Peltier Technology allows for automated, high-speed viscosity index measurement. eralytics unique FillingProof® solution detects even smallest bubbles, ensuring maximum density accuracy. eravisc X is the analyzer with the smallest footprint on the market, still offering maximum ease of use and operator convenience. The compact dimensions and lightweight instrument design offer true portability on-site and require minimum bench space in the lab.
2 in 1: Viscosity & density testing with lab-precision
eravisc X allows for the independent measurements of viscosity and density enabling the simultaneous determination of both values at different temperatures. eralytics unique, dynamic capillary viscosity measurement method determines the flow time of the sample as a function of a rapidly measured pressure. This patented principle combines the advantages of traditional capillary methods with the speed and ease of use of eralytics instruments.
erafill s – The syringe sample changer for viscosity & density testing
The erafill s is an automatic filling and cleaning device for the kinematic viscometer eravisc X and the density meter eradens X. The single-position sample changer allows the master device to be filled from a 12 mL syringe. Repeat measurements and measurements at different temperatures can be carried out easily.
If required by the sample sequence, cleaning with up to two different solvents and final drying of the measuring cells are performed fully automatically. The optimized cleaning process ensures minimal turnaround times and prevents cross-contamination. Get more details in the erafill s brochure.
Your features at a glance
- The smallest and most rugged kinematic viscometer
- Lab-grade precision (ASTM D445 and ASTM D7042)
- Measurement of kinematic viscosity at 40 °C or at 100 °C in 1 minute
- Independent high-precision density measurement in full compliance with ASTM D4052 and ISO 12185
- Revolutionary capillary measuring cell
- FillingProof® Technology
eravisc X operation video
Watch this video to get an overview of the standard operation of eravisc X: It demonstrates how easy it is to use the analyzer, from filling the sample to measuring and simple follow-up steps.
erafill s operation video
Watch this video to learn about the standard operation of the syringe sample changer erafill s with the kinematic viscometer eravisc X, which makes filling the sample and taking measurements easier.
eravisc X in detail
Technical Specifications for eravisc X
- Available Test Methods
- Viscosity: Correlation to ASTM D445, D7042, D2270, ISO 3104, ISO 23581
Density: ASTM D4052, D5002, ISO 12185 - Special Operation Modes
- Viscosity Index (40 °C & 100 °C)
Simultaneous Viscosity & Density testing at independent temperatures - Measuring Range
- Viscosity: 1 – 1000 mm2/s | Density: 0 – 3 g/cm3
- Temperature Range
- Viscosity: 15 °C to 100 °C (59 °F to 212 °F) | Density: 0 °C to 100 °C (32 °F to 212 °F)
- Accuracy *
- Viscosity: 0.8 % | Density: 0.00005 g/cm3
- Repeatability (SD)*
- Viscosity: 0.25 % | Density: 0.000005 g/cm3
- Resolution
- Viscosity: 0.01 mm2 /s | Density: 0.00001 g/cm3
- Temperature Accuracy
- 0.02 °C (0.04 °F)
- Measurement Time
- 1 minute
- Sample Volume
- 3 mL
- Bubble Detection
- FillingProof® – automated bubble detection and bubble quantification
(Patent: US 11,493,417 B2) - Oscillating Tube (Density)
- Hastelloy (Patent: US 11,630,044)
- Viscosity Correction (Density)
- Yes – full range correction (Patent: AT523471 A1)
- Special Features
- Integrated fully-automated drying pump, built-in ambient pressure sensor
- Result Database
- Over 100 000 detailed test reports stored
- PC Software
- erasoft RCS – remote control Windows® software for multi-instrument remote control,
convenient data transfer, viewing spectra and result analysis
erasoft OCM software – supports operators in the management, operation and predictive maintenance of technical equipment with a focus on oil condition monitoring - Remote Service
- Remote service capability via Ethernet
- Interfaces
- Built-in PC with Ethernet, 4 x front and rear USB, RS232 interfaces, Wi-Fi via USB dongle
Direct LIMS connectivity via LAN, output to printer or PC, and export as CSV or PDF
Optional input by keyboard, mouse, and barcode reader - Display
- Industry-proven 8.4“ multilingual color touchscreen
- Power Requirements
- 85 – 264 V AC 47 – 63 Hz, max 150 W
- Operating Condition
- 5 °C – 45 °C up to 90 % rel. humidity (non-condensing)
- Dimensions & Weight
- (W x D x H) = 18.0 x 28.6 x 29.3 cm (7.1 x 11.2 x 11.5 in) / 8 kg (17.6 lb)
- *Typical values, depending on sample type and temperature and without consideration of the particular uncertainties of reference materials (CRM)
Downloads for eravisc X
Frequently Asked Questions about eravisc X
eravisc X is a 2-in-1 solution for various types of samples including formulated lubricants, diesel and several further substances. It delivers high-precision kinematic viscosity and density results for samples that are naturally fluid at room temperature and maintain a stable, uniform consistency.
– Seamlessly analyzes various sample types with a viscosity of up to 2000 mm²/s at ambient conditions
– eravisc X is designed for samples that are naturally fluid at ambient temperatures, ensuring smooth injection without the need for external heating
– Accommodates particles up to 0.4 mm. For samples with larger particulates, simple pre-filtration maintains the precision of the capillary system
eravisc X provides a reliable, low-maintenance environment for consistent, laboratory-grade performance across a wide range of applications. The optional sample changer erafill s is available to enable full automation. Get more on the kinematic viscometer in the eravisc X brochure.
Through automated Air Checks and patented FillingProof™ technology, eravisc X monitors the entire filling process. It identifies air bubbles and verifies cell cleanliness to guarantee the highest repeatability and data quality. Through automated Air Checks and patented FillingProof™ technology, eravisc X monitors the entire filling process. It identifies air bubbles and verifies cell cleanliness to guarantee the highest repeatability and data quality. The sample should be filled without air bubbles and any further inhomogenities. Thanks to the vertical density cell the risk of negative influence of bubbles is significantely reduced.
eravisc X is engineered with a multi-layered verification system to protect the accuracy of density and viscosity readings:
Automated Air Check: This function measures the density of air within the cell before injection, serving as a reliable benchmark for instrument cleanliness and readiness
FillingProof™ technology: It verifies bubble free filling by checking for potential air bubbles in the density cell
Consistency verification: In addition, the system typically performs dual measurement runs to confirm that the sample is stable and homogeneous
Intelligent error handling: If air bubbles are detected, the system triggers a warning during the automated FillingProofTM sequence.
Most samples do not require sample preparation. Samples like Diesel require no pretreatment, high-viscosity or non-homogeneous used oils may require homogenization and degassing.
Effortless homogenization: For samples prone to separation, a quick shaking or rolling ensures all components are evenly distributed for a representative measurement
Effective degassing: For non-homogeneous or used oils, a brief session in an ultrasonic bath effectively removes air bubbles
Visual integrity check: A quick inspection before and after filling the syringe ensures the sample is free of bubbles
Often letting the filled syringe rest for some minutes makes the bubbles rise to the top of the syringe and therefore do not influence measurement precision. If you have more questions concerning sample preparation, please contact our service and support team.
eralyitcs’ eravisc X arrives fully factory-calibrated and ready for immediate use. Built-in reminders and simple verification steps help maintain peak performance. Regular verification with reference material determines if a new calibration is actually required. While the core measurement geometry and temperature sensors are designed for long-term stability, maintaining laboratory-grade precision is made easy through a proactive verification workflow:
– Simple verification: Routine checks using Certified Reference Materials (CRM) allow you to quickly confirm that the instrument is performing within its high-precision specifications
– Easy adjustments: In the rare event that a drift is detected, often due to natural electronic aging or minor residue, the system allows for a user-friendly, step-by-step recalibration of individual cells
– Long-Term protection: Keeping the measuring cells clean and dry ensures the instrument remains stable for years, minimizing the need for technical adjustments. If you have further questions concerning calibration, please contact our service and support team.
Cleaning is recommended after every measurement cycle. This routine ensures the measuring cells remains in optimal condition, preventing residue buildup and guaranteeing the integrity of every kinematic viscosity and density result. Following a consistent protocol prevents cross-contamination and protects the internal capillaries:
– Cleaning after each cycle provides a fresh baseline, ensuring that particulates or films from previous samples do not influence subsequent data
– A thorough cleaning is recommended prior to any calibration or validation
– Proper rinsing is vital when switching between immiscible phases (such as aqueous and organic samples) to prevent measurement interference
– Completing a cleaning cycle at the end of a shift or before storage keeps the instrument in top condition for its next use
If you have further questions concerning the cleaning process, please contact our service and support team.
eravisc X is compatible with a wide range of standard laboratory solvents, including toluene, petroleum benzine, naphtha, and alcohols. The ideal choice depends on your sample type and measurement temperature to ensure efficient cleaning and drying. Compatibility is generally determined by the sample’s chemical nature and the measurement temperature. Hydrocarbon based samples are typically cleaned with common solvents like toluene, petroleum benzine and naphtha. Distilled water and various alcohols are the preferred choices for cleaning after analyzing water-based samples. To optimize throughput, low-boiling drying solvents can be used as a final rinse. If you have further questions concerning solvents for eravisc X, please contact our service and support team.