The indirect collaboration between Lange precision pumps and servo valves centers on a unified automation control system (such as PLCs or dedicated controllers) serving as an intermediary coordination hub. Each component fulfills its core function—fluid transmission and power regulation—while achieving synchronization through system command coordination and signal feedback. This synergy is commonly observed in automated scenarios like industrial filling and material testing. The implementation process comprises three key stages, illustrated below with practical application examples:
Unified Control System as the Collaborative Bridge
Their collaboration relies on a central control system built using PLCs (Programmable Logic Controllers) or dedicated servo controllers, serving as the core link. On one hand, operators can preset parameters through the system—for instance, setting fill volume and transfer speed in filling scenarios, or defining test force and fluid supply rate in material testing scenarios. On the other hand, the system simultaneously issues coordinated commands to both the Lange precision pump and servo valve while receiving operational feedback signals from both. This synchronizes their start/stop sequences and operational parameters, preventing action misalignment. For instance, the Lange SP1-C1 industrial syringe pump supports RS485/RS232 communication control, enabling seamless integration into such automation systems and providing the hardware communication foundation for collaboration.
Servo Valves Regulate Power to Match Pump Operation Rhythms
As the “power regulating valve” of hydraulic systems, servo valves precisely control hydraulic power output based on control system commands to drive associated mechanisms. This ensures stable operation by matching the rhythm of Lange precision pumps. For instance, in microcomputer-controlled electro-hydraulic servo tensile testing machines, the system requires a Lange precision pump (or similar precision oil pump) to continuously and stably supply hydraulic oil and other fluids. The servo valve adjusts the pressure and flow rate in the hydraulic circuit by controlling its own opening size and direction according to the testing machine's force requirements. This ensures the speed and force of the cylinder driving the testing mechanism match the fluid supply from the pump, preventing both stalling due to insufficient pressure and excessive load on the pump caused by overpressure. Similarly, in large-scale filling production lines, servo valves synchronize the hydraulic drive mechanisms of conveyor belts and filling heads with the fluid delivery rhythm of Lange precision pumps.
Lange Precision Pumps: Precise Fluid Delivery with Dynamic Response
Lange precision pumps focus on high-precision fluid transfer while dynamically adjusting their operating parameters based on feedback from servo valves and associated mechanisms transmitted by the control system. Consider a fermentation tank application in the pharmaceutical industry: during fermentation, servo valves regulate hydraulic power for tank agitators to adjust mixing speed and ensure uniform material blending, while Lange micro gear pumps precisely deliver nutrients, catalysts, and other fluids into the tank. When servo valves increase agitation speed, the control system sends synchronized feedback signals to the Lange gear pump, proportionally boosting its flow rate to guarantee thorough material reaction. Conversely, when the servo valve reduces agitation speed, the pump automatically lowers its flow rate to prevent fluid accumulation. Furthermore, select Lange precision pumps support external control signals such as 4-20mA and 0.5-5V. These pumps can directly receive electrical signals converted by the control system based on servo valve conditions, enabling rapid fine-tuning of speed and flow rate to further enhance collaborative precision.
