LDP 190 Diesel Filter Differential Pressure Test System
Automated liquid-filter test system for measuring diesel-filter differential pressure according to ISO 4020/6.3, with controlled flow, pressure and temperature plus automated venting.
Model Overview
| Model | System purpose | Standards / method | Core fit |
|---|---|---|---|
| LDP 190 | Controlled liquid-loop system for differential-pressure testing and valve leak checks | ISO 4020/6.3 | Diesel-fuel filter characterisation, liquid-filter development and valve tightness testing |
Key Features
ISO 4020 differential-pressure testing
Measures the pressure loss of diesel fuel filters at defined flow and temperature conditions.
Wide flow-rate range
Covers liquid flow rates from 25 to 2000 L/h for diverse filter sizes and operating points.
Controlled pressure and temperature
Adjusts system pressure and heats the test medium from 20 to 80 °C.
Automated specimen venting
A dedicated mode removes residual air after specimen changes without manual intervention.
Conditioning bypass
The liquid can be temperature-conditioned through a bypass while the specimen is replaced.
Multi-liquid capability
Supports diesel, diesel substitutes and application-specific liquids for other filter types.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| CONTROLLED PARAMETERS | ||
| Flow-rate range | L/h | 25–2000 |
| System pressure before specimen | bar | Maximum 20 |
| System pressure after specimen | bar | Maximum 5 |
| Test-medium temperature | °C | 20–80 |
| Maximum specimen envelope | mm | 500 × 500 × 500 |
| SYSTEM DATA | ||
| Test medium | — | Diesel and diesel substitutes |
| Compressed-air supply | bar | 7–9; dry and particle-free |
| Cooling-water temperature | °C | Maximum 13 |
| User interface | — | Touchscreen, keyboard and mouse |
| Communication | — | USB and Ethernet |
| Dimensions (W × H × D) | mm | 2600 × 2050 × 1300 |
| Weight | kg | Approx. 1000 |
Published values support initial model selection. Confirm final configuration, utilities, accessories and calibration scope during technical review.
Applications
Diesel-filter pressure drop
Differential-pressure testing of diesel fuel filters according to ISO 4020/6.3.
Other liquid filters
Characterisation of pressure loss using compatible alternative test liquids.
Valve leak testing
Tightness checks of valves under controlled liquid pressure.
Operating-condition simulation
Variation of flow, pressure and temperature to reproduce machinery operating conditions.
Automated acceptance tests
Repeatable software-guided testing for production and incoming inspection.
Filter design comparison
Benchmarking of media, pleat and housing designs using controlled liquid circulation.
