The Yamato AC-505A is a single-operator anaerobic chamber that automates the purge sequence: press the on-screen "Go Anaerobic" button and the chamber creates and holds an oxygen-free atmosphere without manual valve work. Configured for 110ā120 V / 50ā60 Hz, it adds a touch-screen controller, continuous oxygen display in percent and ppm, automatic pressure-hold, and 24-hour USB data logging on top of the same 55-inch single-operator chassis as the manual AC-505. It is the choice when reproducible, hands-off atmosphere control matters.
Key Specifications
| Configuration | Single-operator chamber; automatic "Go Anaerobic" purge |
| Oxygen sensor | 0ā100.0% Ā±1.0%; 0ā10,000 ppm Ā±1.0% FS (auto-switches to ppm below 0.5% O2) |
| Temperature range | Ambient to 41 Ā°C, accuracy Ā±0.5 Ā°C |
| Gas to reach anaerobic | 300 L |
| Pressure range | ā3 to +3 in WC (ā1500 to +1500 Pa), automatic pressure hold |
| Optional Rh control | 5ā90% Rh, accuracy Ā±1.0% |
| Control / logging | Touch-screen display; on-screen 24-hr data logging via USB; high/low alarms with history; password-protected admin |
| Gas selection | User-selectable nitrogen or anaerobic gas mixture |
| Inside dimensions | 41 Ć 28 Ć 26 in / 1041 Ć 711 Ć 660 mm |
| Outside dimensions | 55 Ć 35 Ć 38 in / 1397 Ć 889 Ć 965 mm |
| Power | 110ā120 VAC, 50/60 Hz, 5 A |
| Shipping weight | 450 lbs / 205 kg (crated) |
| List price | Contact for pricing |
Application Profile
Where the manual AC-505 asks the operator to run each purge by hand, the Yamato AC-505A turns anaerobic setup into a single button press. The "Go Anaerobic" sequence automatically purges both the main and transfer chambers, then an automatic pressure-hold function keeps the chamber at a user-set level between ā3 and +3 in WC. A larger touch screen continuously reports oxygen in percent and, once levels fall below 0.5%, automatically switches to a parts-per-million readout, the resolution needed to confirm a truly anaerobic environment for strict anaerobes and oxygen-sensitive assays.
That automation pays off in reproducibility and record-keeping. On-screen 24-hour data logging with a USB port captures oxygen and pressure history for long-term studies, high- and low-level alarms with a history log flag excursions, and a password-protected administration window locks down settings in shared or regulated labs. Reaching anaerobic conditions consumes roughly 300 L of gas, and an optional relative-humidity monitoring and control package (5ā90% Rh) extends the chamber to moisture-sensitive work. The result is a hands-off, auditable atmosphere on the compact single-operator footprint.
Frequently Asked Questions
What does the "Go Anaerobic" button do? It launches an automatic purge sequence that evacuates and inert-gas-fills both the main and transfer chambers, then holds the set pressure, no manual valve operation required.
How precisely can the AC-505A measure oxygen? The oxygen sensor reads 0ā100.0% at Ā±1.0% and 0ā10,000 ppm at Ā±1.0% full scale, and automatically switches to the ppm display once O2 drops below 0.5%.
What voltage does it use? 110ā120 V at 50/60 Hz, drawing 5 A. The AC-515A is the equivalent automatic chamber for 220 V service.
Does it log data? Yes, on-screen 24-hour data logging with a USB port for long-term studies, plus high/low alarms with an alarm-history log.
How much gas does it take to reach anaerobic conditions? Approximately 300 L. The user can select nitrogen or an anaerobic gas mixture.
Can it control humidity? Optionally, an Rh monitoring and control package covers 5ā90% Rh at Ā±1.0% accuracy.
Ordering & Configuration
The AC-505A is quote-based capital equipment. Add it to your quote and our team will confirm current pricing, the optional Rh package, gas selection, and lead time. It ships crated as a complete system (~450 lbs); plan for an inert-gas supply at install.
Warranty: Per Yamato standard terms. Safety: Never use in a flammable or explosive gas atmosphere, and never introduce explosive or flammable materials.
Positioning: The Yamato AC-505A is the automatic, touch-screen single-operator anaerobic chamber. Choose it over the manual AC-505 when you want one-touch purging, continuous %/ppm oxygen readout, and USB data logging. Pick the AC-515A for 220 V service, or step up to the four-glove AC-706/716 for two-operator throughput.
