Anest IWATA ISP-250 Oil-Free Scroll Vacuum Pump
| Origin | Japan |
|---|---|
| Pump Type | Oil-Free Scroll Vacuum Pump |
| Ultimate Vacuum | 5 Pa |
| Pumping Speed | 250 L/min (at 50 Hz) |
| Motor Output | 0.4 kW |
| Noise Level | 58 dBA |
| Weight | 25 kg (single-phase) |
| Inlet Port | KF25 |
| Cooling Method | Air-Cooled |
| Operating Temperature | 5–40 °C |
| Leak Rate | ≤1×10⁻⁵ Pa·m³/s |
Overview
The Anest IWATA ISP-250 is a high-reliability, oil-free scroll vacuum pump engineered for continuous operation across demanding laboratory and industrial vacuum applications. Utilizing a precision-machined dual-scroll mechanism, it achieves compression through orbital motion of two intermeshing spiral scrolls — one fixed and one orbiting — without contact or lubrication. This dry-running architecture eliminates oil vapor backstreaming, hydrocarbon contamination, and maintenance associated with oil-sealed pumps. Designed for stable performance from atmospheric pressure down to an ultimate vacuum of 5 Pa, the ISP-250 delivers consistent pumping speed (250 L/min at 50 Hz) with minimal torque fluctuation, resulting in inherently low vibration and acoustic emissions (58 dBA). Its air-cooled, IE3-efficiency motor (0.4 kW) supports energy-conscious operation while maintaining thermal stability under prolonged duty cycles.
Key Features
- Oil-free scroll technology ensures contaminant-free vacuum — critical for surface science, analytical instrumentation, and ultra-high-purity gas handling.
- Robust mechanical design with non-contact scroll operation enables extended service life and zero oil consumption or oil-change intervals.
- Low-vibration, low-noise performance (58 dBA) allows integration into noise-sensitive environments including cleanrooms, accelerator beamlines, and metrology labs.
- KF25 flanged inlet port conforms to ISO-K standard, facilitating rapid, leak-tight connection to common vacuum components and chambers.
- Wide operational pressure range: stable pumping from 10⁵ Pa (atmosphere) to 5 Pa without throttling or auxiliary stages.
- IE3 high-efficiency motor meets international energy efficiency standards (IEC 60034-30-1), reducing power consumption and heat dissipation.
- No cooling water required; ambient air cooling suffices across full operating temperature range (5–40 °C).
Sample Compatibility & Compliance
The ISP-250 is compatible with inert, reactive, and condensable process gases typical in physical vapor deposition (PVD), sputtering, electron-beam evaporation, and vacuum thermal processing. Its dry compression chamber prevents chemical interaction with pumped media — making it suitable for helium recovery systems, residual gas analysis (RGA) pre-pumping, and leak detection instrumentation. The pump complies with CE marking requirements (2014/30/EU EMC Directive and 2014/35/EU LVD Directive) and meets ISO 8573-1 Class 0 air purity certification for oil-free operation. It supports GLP/GMP-aligned workflows where documentation of vacuum integrity and absence of hydrocarbon interference is essential — particularly in pharmaceutical R&D, semiconductor process development, and synchrotron beamline infrastructure.
Software & Data Management
While the ISP-250 operates as a standalone analog-controlled pump (no integrated digital interface), its electrical and mechanical characteristics are fully compatible with third-party vacuum system controllers and PLC-based monitoring platforms. Analog output signals (0–10 V or 4–20 mA) can be configured for real-time feedback of motor current or temperature — enabling predictive maintenance logging via SCADA or LabVIEW-based data acquisition systems. For audit-ready environments, pump runtime, on/off cycles, and thermal event logs can be captured externally to satisfy FDA 21 CFR Part 11 requirements when paired with compliant data historians. No firmware updates or proprietary software licensing is required — ensuring long-term operational continuity and minimizing cybersecurity exposure.
Applications
- Pre-vacuum pumping for mass spectrometers, X-ray photoelectron spectrometers (XPS), and Auger electron spectrometers (AES)
- Backing pump for turbomolecular and cryogenic high-vacuum systems in accelerator facilities and free-electron laser (FEL) beamlines
- Primary vacuum source for thin-film deposition tools (sputtering, e-beam, ion plating) requiring hydrocarbon-free environments
- Gas recirculation and recovery in helium-based leak detection systems and rare-gas purification loops
- Vacuum packaging and material drying in R&D-scale food, pharma, and battery electrode processing
- Evacuation of vacuum furnaces, diffusion bonding chambers, and vacuum impregnation systems
- Integrated vacuum handling for robotic wafer transfer modules and vacuum chucks in microfabrication
FAQ
Is the ISP-250 suitable as a backing pump for turbomolecular pumps?
Yes — its 250 L/min pumping speed and 5 Pa ultimate vacuum meet standard backing requirements for turbomolecular pumps up to ~600 L/s, provided inlet gas load remains within thermal and pressure limits.
Can it handle condensable vapors such as water or solvents?
It is not recommended for sustained pumping of high partial pressures of condensables; use with cold traps or foreline filters is advised for intermittent solvent vapor loads.
What is the expected mean time between failures (MTBF)?
Based on field data from industrial installations, MTBF exceeds 20,000 hours under continuous operation at rated conditions, with scroll wear being the primary life-limiting factor.
Does the pump require periodic calibration or certification?
No — as a mechanical displacement pump, it has no internal sensors requiring recalibration; however, periodic verification of ultimate vacuum and pumping speed per ISO 21360-1 is recommended for QA/QC documentation.
Is KF25 the only inlet configuration available for the ISP-250?
Yes — the ISP-250 is standardized with a KF25 (ISO-K 25) inlet flange; adapters to CF, ISO-LF, or custom ports are available separately.
