Agilent MS45 Rotary Vane Pump

Significance of the topic

The selection and characterization of a reliable backing pump is critical for many analytical and imaging platforms. Rotary vane pumps that provide stable rough vacuum below 10 Torr and reach ultimate pressures in the 10^-2 mbar range are widely used to support mass spectrometers (LC/MS, ICP/MS, GC/TOF/MS), electron microscopes and other scientific instrumentation. Energy efficiency, variable-speed operation, system integration and contamination control are key determinants of uptime, data quality and operating cost in modern laboratories.

Objectives and study overview

This data sheet summarizes the design features, operating envelope and accessory ecosystem of the Agilent MS45 single-stage rotary vane pump with integrated inverter. The aim is to present the pump’s performance, connectivity and compliance details relevant to instrument builders, laboratory managers and vacuum technicians evaluating rough vacuum solutions for analytical platforms.

Methodology and instrument characterization

The MS45 is characterized by multi-speed performance points and curves provided by the manufacturer. Key performance parameters include nominal rotational frequencies and corresponding pumping speeds, noise levels, ultimate pressure, electrical ratings and dimensional/installation parameters. Performance claims (pumping speed and ultimate pressure) are reported according to ISO21360-1 and ISO21360-2 standards.

Used instrumentation

- Product: Agilent MS45 single-stage rotary vane pump with inverter.
- Mechanical interfaces: KF25 inlet and KF25 exhaust flanges.
- Motor/electrical: inverter-driven motor, motor rating 0.75 kW, nominal input 100–240 Vac (±10%), 50/60 Hz; max input power 1000 VA.
- Fluids and consumables: recommended rotary vane pump fluid AVF 60 GOLD (part number listed by vendor).
- Ancillary accessories: exhaust filter kits, oil sight window and level indicators, inlet valve and flange, oil mist filter cap, maintenance kits, interlock/serial cables and power cords (various regional part numbers).

Main results and discussion

Performance summary:

• Pumping speed: dependent on rotor speed — 32 m3/h at 900 rpm, 36 m3/h at 1050 rpm, 41 m3/h at 1200 rpm and 45 m3/h at 1350 rpm. These values define the pump’s throughput across common rotary frequencies (30–45 Hz).
• Ultimate pressure: specified as < 5 × 10^-2 mbar (per ISO21360-1/2) — adequate for many secondary-vacuum applications in analytical instrumentation.
• Acoustic emission: noise levels increase slightly with speed, reported as <58 dB(A) at 900 rpm up to <61 dB(A) at 1350 rpm, suitable for laboratory environments.
• Power behavior: the inverter motor provides variable speed control and the data sheet includes a power consumption curve showing electrical power demand across the pressure range (manufacturer’s graph). Maximum electrical demand is bounded by the 1000 VA input rating while continuous motor rating is 0.75 kW.
• Mechanical and serviceability features: 1 L oil capacity, anti-suck-back device to protect downstream instrumentation, readily replaceable exhaust filtration and service kits, and visible oil sight/window options.

Connectivity and control:

• Integrated inverter enables dynamic speed and pressure adjustment, improving energy efficiency compared with fixed-speed units.
• Digital interfaces: RS‑232, RS‑485 and RJ‑45 for remote status, interlocks and integration with Agilent A‑PLUS software; status LED for quick local monitoring.

Operational envelope and installation:

• Operating temperature range: 12–40 °C.
• Maximum altitude: 4,000 m.
• Ingress protection: IP20; installation category II, pollution degree 2.
• Compact footprint: 440 × 306 × 271 mm, weight 35 kg.

Regulatory and electromagnetic compliance is comprehensive and appropriate for international laboratory deployment (detailed in References below).

Benefits and practical applications

- Versatile global operation: designed to accept wide input voltages and operate at multiple line frequencies for global deployments.
- Energy and operational efficiency: inverter-driven motor allows matching pump speed to process demand, reducing running power and oil backstreaming risks when lower throughput suffices.
- Instrument protection features: anti-suck-back device and exhaust filtration lower the risk of contamination and instrument damage during power loss or maintenance events.
- Integration and automation: RS-232/RS-485/RJ-45 connectivity and A‑PLUS software compatibility facilitate remote monitoring, integration into instrument control stacks and simplified interlocks.
- Serviceability and lifecycle support: vendor-specified maintenance kits and spare parts (oil filters, oil sight gaskets, oil mist caps, inlet valves) support predictable preventive maintenance and decrease downtime.

Future trends and potential applications

- Increased digitalization: tighter integration with laboratory information management systems (LIMS), predictive maintenance through vibration or oil-condition telemetry, and cloud-based fleet monitoring.
- Energy optimization: further firmware and control-loop developments to optimize power draw for variable process loads and to meet evolving ecodesign requirements.
- Contamination control advances: enhanced filtration media and oil formulations to reduce hydrocarbon backstreaming and improve mass-spectrometer sensitivity and uptime.
- Competition and hybridization: growth of oil-free dry pump technologies for applications demanding hydrocarbon-free vacuum; however, oil-sealed rotary vane pumps will remain relevant for cost-sensitive, high-throughput rough vacuum tasks where ultimate pressure requirements are modest.

Conclusion

The Agilent MS45 is a compact, inverter-driven single-stage rotary vane pump tailored for analytical and imaging platforms that require reliable rough vacuum up to the low 10^-2 mbar range. Its combination of variable-speed operation, global electrical compatibility, built-in protection features and digital interfaces make it a practical choice for laboratories seeking a balance of performance, serviceability and integration capability. The provided accessory and maintenance ecosystem supports routine service and long-term operation in demanding instrument environments.

References

Standards and certifications cited by the manufacturer:

• ISO21360-1 and ISO21360-2 (pumping speed / performance reporting).
• Machinery Directive 2006/42/EC; safety standards EN 1012-2:1996+A1:2010 and EN ISO 12100:2012.
• Low Voltage Directive 2014/35/EU; IEC 61010-1 Ed. 3.1 b:2018.
• Electromagnetic Compatibility 2014/30/EU; EN 61326-1:2020 Class B; EN 61000-3-2:2019 Class A; EN 61000-3-3:2014/A2:2022 Class A; EN 61000-6-2:2020.
• Ecodesign Directive 2009/125/EC and Regulation (EU) 2019/178; EN 60034-30-1:2015 (energy efficiency).

Manufacturer contact regions and support channels were provided in the original data sheet for ordering, regional service and spare-parts procurement.