Agilent HS 652 pump: controlled performance for demanding vacuum applications
The HS 652 pump developed by Agilent is part of a range of rotary vane pumps designed to meet the requirements of scientific and industrial applications requiring a stable and constant primary vacuum. Thanks to integrated inverter control technology, the HS 652 operates smoothly over a wide range of voltages and frequencies without compromising reliability or operating temperature.
It is based on a microprocessor-controlled three-phase motor coupled to an inverter unit delivering a maximum power of 780 W. This system enables the pump to reach a nominal speed of 2000 rpm, ensuring a pumping capacity of 32 m³/h. Its free air displacement is 40.3 m³/h, which guarantees remarkable efficiency in the pre-emptying phase of vacuum systems.
The HS 652 pump achieves a total ultimate pressure of 2 x 10⁻³ mbar, and 1 x 10⁻² mbar when operating with a gas ballast. These values demonstrate its ability to achieve a high vacuum in optimised times, as shown by the evacuation and pumping speed curves included in the technical documentation.
Unlike traditional single-phase motor pumps, the HS 652 is capable of starting with approximately seven times lower inrush current, which limits wear on electrical components and facilitates integration into existing installations. It is equipped with an integrated diagnostic system that quickly detects start-up faults, thus preventing uncontrolled overloads.
The HS 652 can be remotely controlled via RS232/RS485 interfaces or discrete I/O. Agilent's T-plus Navigator software enables simple control, continuous monitoring of parameters and adaptation of the rotation speed to the specific requirements of each application. This flexibility is particularly valuable in environments with high gas loads, where the pump can be operated below the self-regulating pressure (40 mbar for this model) while maintaining maximum performance.
Weighing 33 kg and with compact dimensions, it fits easily into laboratory configurations. Its comprehensive features make it a technical solution tailored to the daily requirements of researchers and vacuum professionals.
