Filter Flow Resistance Tester

1. Application Scenarios

The Filter Flow Resistance Tester is designed to evaluate the clean pressure drop characteristics of various fluid filters. It is widely used for:

Measuring pressure drop vs. flow rate curves of filter elements and complete filter assemblies.

Comparing flow resistance among different filter designs, materials, and manufacturers.

Selecting appropriate filters based on system pressure drop limits.

Validating and verifying manufacturer-provided filter performance data.

Optimizing hydraulic, lubrication, and fuel systems to reduce energy losses caused by filtration.

Implementing quality control during filter production to ensure consistent flow characteristics.

Supporting R&D of new filter media and innovative low-resistance designs.

The tester is suitable for hydraulic system manufacturers, automotive suppliers, filter factories, and laboratory research institutions.

2. Applicable Standards

The system supports standardized pressure drop measurement procedures in accordance with:

ISO 3968

Hydraulic fluid power — Filters — Evaluation of differential pressure versus flow characteristics.

SAE J806

Full-flow lubricating oil filters — Method of test.

Compliance with these standards ensures consistent, comparable, and globally recognized test results.

3. Technical Parameters

Parameter	Specification
System Pressure Gauge Range	0–30 bar
Working Medium	SAE 5W engine oil
Pressure Rise Accuracy	0.5 bar per increment
Temperature Range	Room temperature
Protective Cover	Transparent safety shield

Typical System Components Include:

Test fluid reservoir

Variable flow rate pump or flow control system

Filter test housing for element/assembly mounting

Upstream and downstream pressure transducers

Differential pressure transducer for direct ΔP measurement

Precision flow meter

Fluid temperature stabilization system

4. Product Advantages

Provides accurate and objective measurement of filter flow resistance under clean conditions.

Critical for system design, ensuring filters meet allowable pressure drop requirements.

Helps improve energy efficiency by evaluating pressure losses within hydraulic or lubrication circuits.

Standard-compliant testing according to ISO 3968 ensures reliable and repeatable results.

Highly suitable for product development, performance verification, and production quality control.

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