Overview
EPSILON+ is a compact laboratory instrument for precise measurement of the complex fluid impedance, based on DIN IEC 60247 (also DIN 51 111 test standard coming soon!).
This reliable system will determine the following properties:
- Specific Electrical Conductivity
- Relative Permittivity / Dielectric Constant – εr
- Dielectric Dissipation Factor (DDF) – tanδ
Advanced dielectric characterization of fluids
EPSILON+ is a compact laboratory instrument designed for precise measurement of the dielectric properties of fluids. Based on impedance measurements according to DIN 51111, the system enables reliable characterization of electrical conductivity, relative permittivity, and dielectric dissipation factor (DDF/tan δ) across a wide temperature range.
As electrification continues to transform industries such as automotive, energy, and data centre cooling, understanding the electrical behaviour of fluids has become increasingly important. Modern e-drive lubricants, immersion cooling liquids, transformer oils, and specialty hydraulic fluids must meet demanding electrical performance requirements to ensure reliability, efficiency, and operational safety.
EPSILON+ provides a fast and non-destructive method for evaluating these properties using only a small sample volume. Combined with optional automated temperature control, the system allows users to study dielectric behaviour as a function of temperature and obtain highly repeatable results for research, product development, quality assurance, and condition monitoring applications
Key Features
- Measurement of electrical conductivity, relative permittivity (dielectric constant) and dielectric dissipation factor (DDF / tan δ)
- Dielectric fluid testing according to DIN 51111, developed specifically for moderately conductive lubricants
- Suitable for lubricants, greases, hydraulic fluids, transformer oils, immersion cooling fluids, fuels, and hydrocarbons
- Fast, non-destructive impedance-based measurement method
- Requires only 8 ml sample volume
- High accuracy and excellent measurement repeatability
- Wear-free stainless-steel sensor and sample cup design
- Integrated PT100 temperature measurement
- Optional automated thermostat control for temperature-dependent studies
- Automatic testing over user-defined temperature ranges
- Compact benchtop instrument with intuitive operation
- USB and RS-232 connectivity for PC-based control and data evaluation
- Dedicated EPSILON+ software included for measurement control and reporting
- Ideal for EV fluid development, immersion cooling research, transformer oil analysis, and condition monitoring applications
Specifications
| Test standards | DIN EN 60247, ASTM D2624 (conforms partially); DIN 51 111 (pending) |
|---|---|
| Sensor | |
| Dimensions sensor | D = 38 mm, H = 115 mm |
| Sample quality | 8 ml |
| Materials | Stainless steel, polyether ether ketone (PEEK), polyimide |
| Temperature measurement | PT 100, +/- 0.1°C deviation |
| Temperature range | -20°C to 180°C |
| Sample temperature control | Different thermostat options available (controlled by EPSILON+) | Measurement |
| Electrical conductivity – measuring range | 0 nS/m to 600 μS/m |
| Electrical conductivity – resolution | 0.02 nS/m |
| Specific resistivity – measuring range | 1.6 MΩ *m to 50 GΩ *m |
| Relative permittivity – measuring range | 1 to 10 |
| Dielectric dissipation factor – measuring range | 0 to 10.000 |
| Dielectric dissipation factor – resolution | 0.003 |
| Measuring time | approx. 15 s |
| Accuracy | +/- 1% |
| Electronic unit | |
| Power supply | 110 – 240 VAC, 50/60 Hz |
| Energy consumption | max. 30 W |
| Dimensions aluminium housing (W x H x D) | 235 x 150 x 370 mm |
| Display | TFT, 480 x 320 px |
| Data communication (PC) | Dry-block thermostat for automatic testing above RT Fluid circulator w/ extra vessel for testing below RT |
EPSILON+ Dielectric lubricant testing with flucon: EPSILON+ is a powerful instrument for the determination of electrical conductivity, permittivity and loss factor (DDF) of oils and greases: