Spirometer

Standalone Unit:
1. Measures the ventilation capacity of human respiration, with test values reflecting lung volume and expansion capability.
2. The blow barrel and pressure sensor are connected via a soft long tube, featuring condensate vapor functionality to prevent water accumulation that may affect measurement accuracy. Includes anti-backflow function and automatically locks data during air replenishment.
3. LCD display for easy reading. One-button operation with reset function. Low-power design with low battery warning.
Technical Parameters:
Measurement Range: 0–9999 ml
Graduation Value: 1 ml
Error: ±1.5% FS
Main Unit:
1) Utilizes industrial-grade CONTEX-M3 CPU for direct low-level hardware control, independently developed with full intellectual property. Runs on a closed 32-bit proprietary encrypted operating system to ensure stability and security, avoiding public network virus interference. Closed-source system, boots in seconds, non-Android.
2) Dual-chip storage for data backup, capacity up to 60,000–120,000 records. Full-process voice prompts (adjustable volume and mute option). Features a 7-inch color touchscreen display system with adjustable backlight brightness (touchscreen enables all main unit functions).
3) Standard audio interface for external speaker amplification; includes charging indicator and USB insertion indicator.
4) Equipped with ≥2 USB ports; standard built-in imaging QR code and barcode scanner (for quick entry of tester information); optional built-in non-contact IC/ID card functionality; supports USB interface barcode gun for rapid data entry; allows mechanical key input of test numbers (also supports full touchscreen keyboard input for alphanumeric test IDs); supports batch import of tester information via USB for rapid roll-call testing; includes incremental numbering function for efficient data entry.
5) Menu-driven, WYSIWYG interface with full voice guidance (adjustable and outputtable volume) for user-friendly operation. Minimal training required. Operators cannot delete test data; only administrators have data management privileges to ensure security.
6) Data networking via full wireless transmission, supporting real-time or batch transfer. Uses 2.4G communication (long-range large-scale networking). High-power high-frequency wireless module offers long transmission distance, strong diffraction and penetration, and large network capacity. Forms a closed-loop self-organizing local network to avoid public network virus interference; experimental transmission range in open areas reaches 2 km.
7) Silicone keys with long service life; 4×5 matrix 20-key multifunctional design. Tested for 100,000 cycles of durability and fatigue resistance to prevent key label fading or detachment. Anti-slip design eliminates mispresses.
8) Supports DC/AC dual power supply; built-in high-capacity lithium battery for over 10 hours of continuous operation with real-time battery level display.
9) Highly versatile: users can select and instantly pair with any peripheral via menu keys or touchscreen, enhancing reusability and reliability. No computer connection required; test items can be switched without reprogramming. All peripherals communicate with the main unit via ANT 2.4G protocol.
10) Test results can be quickly exported via USB to physical test data management software on PC (avoiding long waits for batch uploads and enabling data collection without proximity to the PC).