**Product Overview** 

 The ultra-high pressure precision digital pressure gauge adopts high-precision, low-power, large-scale integrated circuits as its core components, primarily consisting of a high-precision measurement chip, battery charging protection circuit, sensor, and signal processing circuit. This product utilizes a microprocessor to automatically compensate and correct zero drift, nonlinearity, and other factors, while high-stability pressure sensors and other high-performance components ensure accuracy and reliability. The gauge allows users to customize various functional parameters, offering flexible applications and multiple optional features. It can serve as a high-accuracy pressure calibration standard or as a working instrument in industries such as power, metallurgy, petroleum, and chemical engineering for laboratory and field measurement and research. 

**Product Features** 

1) Allows flexible and convenient parameter settings anytime, anywhere, according to user needs. 

2) Customizable functional pressure gauges tailored to user requirements. 

3) Temperature-compensated for high accuracy and a wide operating temperature range. 

4) Features peak/valley recording, one-key zero reset, and backlight on/off for practicality and ease of use. 

5) Low-power design with a high-capacity lithium battery for extended service life and high stability. 

6) Supports 12 pressure units with one-key switching for broader application. 

7) Optimized algorithms and anti-interference design ensure superior quality and stability. 

8) Triple-protection design enhances durability and reliability. 

9) Includes ambient temperature monitoring and factory reset functions for safer and more user-friendly operation. 

**Technical Parameters** 

1. **Operating Environment:** 

   - Ambient Temperature: (-20 to 70) °C 

   - Relative Humidity: <95% 

   - Atmospheric Pressure: (86 to 106) kPa 

   - Storage Temperature: (-40 to 80) °C 

2. **Display:** 

   - STN LCD with white backlight, 5-digit display. 

3. **Pressure Measurement Range:** 

   - 0~160MPa 

   - 0~200MPa 

   - 0~260MPa 

   - 0~300MPa 

   - 0~400MPa 

   - Other ultra-high-pressure ranges available upon customization. 

4. **Accuracy Class:** 

   - 0.4% FS, 0.2% FS, 0.1% FS (other accuracies customizable). 

5. **Power Supply:** 

   - DC 3.6V mercury-free alkaline battery / rechargeable battery / external DC 24V power supply (optional). 

6. **Pressure Units:** 

   1) Supports 12 pressure units: Pa, kPa, MPa, bar, mbar, psi, kgf/cm², mmH₂O, inH₂O, mmHg, inHg, Torr. One-key switching between units. 

   2) If the display does not read zero at 0 pressure, press the "Zero Calibration" key to ensure measurement accuracy. 

7. **Dimensions (refer to product diagram for details):** 

   - Dimensions: Φ110mm × 49mm 

   - Weight: Approx. 0.5kg 

   - Process Connection: M20 × 1.5 external thread (other thread specifications or mounting methods optional). 

8. **Overload Pressure:** 

   - 120% FS overload (other overload ranges customizable). 

9. **Mounting Method:** 

   - Radial (optional: axial, axial with flange). 

10. **Protection Rating:** 

    - >IP65 

11. **Additional Functions:** 

    - Optional RS485 protocol 

    - 4-20mA output