Choosing the Right DigiVac Controller: Fyra vs. SNAP – And How Torch Fits In

When it comes to vacuum control, DigiVac offers two powerful but distinct controllers – the Fyra and the SNAP – each designed for different use cases yet both compatible with the Torch Data Logger for secure, synchronized vacuum and temperature data logging.

Controller Showdown: Fyra vs. SNAP

1. Purpose and Control Philosophy

• The Fyra controller is DigiVac’s high-performance, modular multi-gauge controller built for precision and flexibility. It supports a wide variety of sensors – from capacitance manometers to piezo, active, passive, and thermal gauges. With a control and measurement range that spans from atmosphere down to as low as 10⁻¹⁰ Torr (depending on the sensors), it’s engineered for demanding scientific and industrial applications.  The Fyra offers a 3.9″ capacitive touch screen plus a tactile knob, giving you both intuitive touch control and a more physical interface.  For users needing flexible mounting, Fyra comes in bench-top, panel-mount, or 19″ rack configurations.
• The SNAP controller, on the other hand, is built for automated process control. As DigiVac describes it, SNAP is Simple, Nimble, Automatic Process control. It’s ideal for setups where recipe-based vacuum control, ramping, or repeated cycles are required. The SNAP’s strength lies in executing automated vacuum setpoints with minimal operator intervention, which makes it well suited to manufacturing environments, vacuum processing systems, or labs where repeated vacuum protocols are essential.

2. Connectivity & Interfaces

• Fyra supports a rich telemetry suite: USB, Wi-Fi, analog in/out (0–10 V), and more. This makes it a flexible choice for integration into modern lab systems or remote monitoring setups.
• SNAP offers USB connectivity and optional RS-232 (serial) for remote control and data collection. It also supports recipe programming via its touchscreen interface, letting you build and execute step-by-step vacuum profiles automatically.

3. Sensor Support

• Fyra is a true multi-gauge controller. It supports a wide range of sensor types: MKS Convectrons, DigiVac piezo (e.g., 775i), quantum capacitance manometers, Agilent/Setra capacitance manometers, and more. Because of this versatility, Fyra is a go-to for those needing high precision across a broad vacuum range.
• SNAP often comes paired with an integral piezo sensor (e.g., the SEN-775i) for mid-range vacuum applications, but it can also be expanded with external transducers to reach lower pressures.

4. Use Cases

• Use Fyra when you need multi-sensor flexibility, high precision, or a system that must support several different gauge types simultaneously. It’s well-suited for research labs, calibration setups, or high-end vacuum systems.
• Use SNAP when you need automation, repeatable vacuum processes, and recipe-based control — especially in production, process lines, or any application where unattended vacuum cycling is beneficial.
  

How the Torch Data Logger Ties It All Together

The Torch Data Logger is the perfect companion to either the Fyra or SNAP controller. Here’s how:

• It can log both vacuum (pressure) and temperature simultaneously, giving you a richer data record than many traditional vacuum loggers.
• The Torch features a 5″ touchscreen and saves data directly to a USB flash drive for secure, portable storage.
• In the event of a power loss, the Torch can resume logging, ensuring data integrity.
• For added security, the USB ports are housed behind a lock-and-key enclosure, so only authorized users can access the logged data.
• Crucially, the Torch automatically detects and pairs with either a Fyra or SNAP controller, making setup straightforward.
• Data is saved in .csv format, so it’s easy to import into Excel or other data systems for analysis or reporting.
  

Making the Right Choice

• Choose Fyra + Torch if you want flexible, high-precision gauge control and need to log detailed vacuum + temperature data across multiple sensors.
• Choose SNAP + Torch if you’re running automated or cyclical vacuum processes and want unattended control with reliable data logging.

No matter which controller you choose, pairing it with the Torch Data Logger ensures you have secure, high-fidelity records for vacuum and temperature – essential for R&D, manufacturing, or any application where data traceability matters.

Want More Info?

If you want further information or just have any questions/inquiries about any of DigiVac’s products, feel free to browse our website or contact us!