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I. Product Overview
The Comprehensive Performance Test Bench for Micro-Pumps and Diaphragm Pumps is a high-precision testing device specifically developed for pumps with low to micro-flow rates and pulsating discharge characteristics. It is fully compatible with products such as micro DC pumps, diaphragm pumps, booster pumps, spray pumps, vacuum pumps, domestic water purification pumps and micro-delivery pumps for medical devices. Unlike conventional centrifugal and rotary pumps, which deliver a continuous and steady flow, diaphragm pumps operate via the reciprocating motion of a diaphragm. They are characterised by pulsating flow, low-pressure start-up, strong self-priming capability, sensitivity to minor flow fluctuations, and oil-free delivery.
This equipment features a hardware and software architecture optimised specifically to address the testing challenges associated with micro- and small-sized pumps. It employs a high-precision micro-flow acquisition system, a micro-pressure stabilisation circuit and a low-disturbance closed-loop circulation system, integrated with a fully automated PLC-based industrial control system. It can precisely capture pulsating flow fluctuations, low-pressure discharge stability and start-stop response variations in diaphragm pumps, enabling comprehensive, one-stop testing of hydraulic performance, electrical characteristics, pulsation characteristics, sealing integrity, service life and temperature rise reliability. The equipment is suitable for mass-production quality inspection, new product R&D calibration, pulsation optimisation and debugging, as well as batch consistency control for micro-pump manufacturers, and is currently the most specialised and targeted standardised testing equipment in the micro-pump industry.
II. Core Test Items
1. Micro-flow Hydraulic Performance Testing
Precisely measures the real-time flow rate, head, inlet and outlet pressures, and pressure differential stability of micro-pumps and diaphragm pumps under low-pressure, micro-flow conditions; performs sweep testing across multiple voltage levels and load conditions; automatically plots flow-pressure and flow-voltage characteristic curves; and resolves the issues of inaccurate low-flow measurements and significant data fluctuations encountered with conventional test benches.
2. Pulsation Characteristics Testing
Tailored to the reciprocating pulsating discharge characteristics of diaphragm pumps, this test involves high-frequency acquisition of instantaneous flow rate, peak and trough values of pressure fluctuations, and pulsation frequency. It calculates the pulsation coefficient to provide an intuitive assessment of the pump’s discharge smoothness, making it suitable for applications with high requirements for flow stability, such as atomisation, medical water delivery and precision pressurisation.
3. Electrical and Speed Control Performance Testing
Measures operating current, input power and standby power consumption at different operating voltages; assesses the linearity of PWM and voltage speed control; verifies the micro-pump’s low-voltage start-up capability, speed control uniformity and stability under full load; and identifies quality defects such as failure to deliver water at low voltage, speed control stuttering and abnormal current readings.
4. Self-priming and No-Load Performance Testing
Automatically test the diaphragm pump’s static self-priming head, self-priming time and no-load stability; verify the pump housing’s airtightness and the diaphragm’s rebound performance; effectively resolve common industry faults such as failure to draw water, slow start-up, flow interruption and intermittent water delivery.
5. Fatigue Durability and Temperature Rise Testing
Simulate real-world operating conditions involving high-frequency start-stop cycles, intermittent operation and continuous pumping through prolonged cyclic operation tests; monitor temperature rise changes in the pump body and coils in real time to verify the wear resistance, fatigue life and long-term reliability of the diaphragm, valve plates and motor structure.
III. Core Advantages of the Equipment
1. Specifically addresses inaccurate low-flow testing, adapted to the pulsating characteristics of diaphragm pumps
Moving away from the general testing logic used for high-flow pumps, the system employs dedicated micro-flow sensors and low-frequency disturbance filtering algorithms. The sampling logic is specifically optimised for the pulsating discharge and minute flow fluctuations typical of diaphragm pumps, ensuring stable data and high repeatability, thereby resolving the industry’s most significant testing challenge.
2. Low-disturbance closed-loop piping system, eliminating interference from air bubbles and water flow
Micro-pumps are extremely sensitive to air bubbles and resistance in the piping. This equipment utilises a low-resistance, pressure-stabilised recirculation system, combined with a micro-venting structure and a buffering pressure-stabilisation unit, to minimise piping interference and accurately reflect the true discharge performance of micro-pumps.
3. Universal compatibility across all micro-pump categories, supporting multiple voltage specifications
Compatible with various DC 6V/12V/24V micro-pumps, including DC pumps, diaphragm pumps, vacuum pumps, spray pumps and water purification booster pumps. The modular quick-change fixture ensures simple clamping and rapid model changes, making it ideal for manufacturers producing a wide range of micro-pumps.
4. Fully automated, one-button testing for high-efficiency mass production quality inspection
The system automatically adjusts voltage, varies load, regulates speed, collects pulse data, generates curves and exports test reports. This eliminates the need for manual, repetitive readings, minimises human error and is suited to the production cycle of full-scale factory-exit inspections for large batches.
5. Visualisation of pulse data to support R&D optimisation
It provides an intuitive display of pulsation waveforms and fluctuation differentials, assisting engineers in optimising diaphragm stiffness, valve plate structure and chamber design. It serves as a core R&D tool for the iteration of new micro-pump models and performance optimisation.
6. Compact size, stable operation and high safety
The equipment features a high degree of integration and a small footprint, making it suitable for workstation-style placement in laboratories and quality control workshops; it is equipped with multiple protection mechanisms against over-voltage, over-current, overheating and water shortage, making it suitable for long-term endurance and ageing tests.
IV. Scope of Application
Widely applicable to manufacturers of water purification diaphragm pumps, spray pumps, medical micro-delivery pumps, vacuum pumps, pressure-boosting pumps for small household appliances, automotive micro-water pumps and DC micro-pumps for smart devices, as well as R&D laboratories and quality control departments. Used for new product performance calibration, pulse performance testing, full factory consistency checks, high- and low-pressure operating condition verification, durability and ageing tests, and structural optimisation trials.
V. After-sales and Warranty Services
We support customisation for non-standard micro-flow ranges, low-pressure test conditions, high-frequency pulse data acquisition, and simultaneous multi-channel testing. The unit comes with a one-year warranty, lifetime technical support and maintenance, and rapid response to after-sales issues to ensure stable testing on production lines.
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