TN-2920 Vacuum Gauge is a vacuum gauge widely used in automotive, industrial, laboratory, heating, ventilation equipment, and medical fields. It features absolute vacuum measurement and absolute pressure measurement, a wide measurement range (1-1500mbar), and overload protection above 2000mbar. The product uses an independent probe for easy measurement and is suitable for measuring air, oil, gas, and liquid. It has 8 units of measurement display, automatic shutdown function, can record and recall maximum/minimum readings, and data logging.
This manual describes the TN-2920 vacuum gauge, highlighting its absolute vacuum and pressure measurement capabilities, a wide measurement range of 1‑1500 mbar, overload protection above 2000 mbar, and eight selectable units. It also details the large LCD display, automatic shutdown, data hold, and RS‑232 computer interface.
The document includes step‑by‑step measurement procedures, data‑recording functions for maximum/minimum values, battery‑replacement instructions, RS‑232 communication format, and a conversion table for pressure units. This manual is written in Chinese.
| Measurement range | 1‑1500 mbar |
|---|---|
| Overload protection | >2000 mbar |
| Display size | 6 mm × 34 mm LCD |
| Power supply | 9 V alkaline high‑energy battery |
| Current consumption | ≈6.0 mA |
| Dimensions (main unit) | 180 mm × 72 mm × 32 mm |
| Weight (main unit) | 220 g |
Eight units are available: torr, mmHg, micron, mbar, kPa, Pa, inchHg, and psi.