ULVAC HELIOT Helium Leak Detectors
We supply, commission, and service the complete range of ULVAC HELIOT helium mass spectrometer leak detectors. All HELIOT models use the same 90° magnetic deflection mass spectrometer principle and detect helium as the tracer gas. They differ in form factor, backing pump type, and pumping capacity.
HELIOT 900 Series — Current Generation
The HELIOT 900 series is the current ULVAC production generation. Five models cover desktop and mobile cart configurations, with oil rotary vane or dry scroll backing pumps. All 900 series instruments include a wireless Android tablet controller, four test modes (Ultra Flow, Fine Flow, Gross Flow, Sniffer), and RS-232C/RS-485/EXT.I/O interfaces.
| Model | Form | Pump |
|---|---|---|
| HELIOT 901W1 | Desktop | Oil rotary vane |
| HELIOT 901D2 | Desktop | Dry Roots |
| HELIOT 904W2 | Mobile cart | Oil rotary vane |
| HELIOT 904D3R | Mobile cart | Dry Roots |
| HELIOT 904D4R | Mobile cart | Dry scroll (large) |
HELIOT 710 Series — Previous Generation
The HELIOT 710 series is a discontinued generation, superseded by the HELIOT 900. Despite discontinuation, 710 series instruments remain widely installed worldwide and are fully serviceable. We supply parts (IS-BA1 ion source, calibration leaks, filters, O-rings) and provide complete repair and maintenance service for all 710 models.
Models: 711W1, 714W2, 714D2, 714D3, 711D1 — HELIOT 710 Series specifications and service
HELIOT MONO — Module Type for Machine Integration
The HELIOT MONO is a compact module-type unit designed to integrate into automated leak test machines and production lines. Unlike the standard HELIOT 900 series, it has no built-in display or cart — it is controlled entirely via the EXT.I/O interface or RS-232C. Minimum footprint for embedded integration.
Minimum Detectable Leak Rate — All Models
| Series | Minimum detectable leak rate | Best test mode |
|---|---|---|
| HELIOT 900 series | 1 × 10⁻¹³ Pa·m³/s | Ultra Flow |
| HELIOT 710 series | 1 × 10⁻¹² Pa·m³/s | Ultra Flow |
| HELIOT MONO | 1 × 10⁻¹² Pa·m³/s | Ultra Flow |
Service and Support for All Models
We provide independent service for all HELIOT generations worldwide — commissioning, preventive maintenance, repair, spare parts supply, and training. On-site visits anywhere in the world. All work conducted in English.
Email: mail@ulvacheliot.com — respond within 1–2 business days.