User Manual of Model 1418/1427
1. Product Overview
This product is a high-precision digital pressure gauge. It is widely used in petroleum, chemical, metallurgy, electric power, hydrology, and other industries.
Features:
- High accuracy
- Good stability
- Easy to operate
- Wide measuring range
- Low power consumption
- Compact and portable
2. Technical Specifications
| Item | Model 1418 | Model 1427 |
|---|---|---|
| Measuring Range | 0-100MPa | 0-100MPa |
| Accuracy | ±0.05%FS | ±0.1%FS |
| Display | LCD | LCD |
| Resolution | 0.01MPa | 0.1MPa |
| Pressure Unit | MPa, kPa, bar, psi, mmHg, inHg, atm, Torr | MPa, kPa, bar, psi, mmHg, inHg, atm, Torr |
| Power Supply | 3V DC (2 AAA batteries) | 3V DC (2 AAA batteries) |
| Battery Life | Approx. 1000 hours | Approx. 1000 hours |
| Operating Temp. | -10°C to 50°C | -10°C to 50°C |
| Storage Temp. | -20°C to 60°C | -20°C to 60°C |
| Humidity | ≤85% RH | ≤85% RH |
| Connection Thread | M20×1.5 | M20×1.5 |
| Overload Protection | 1.5 times the rated pressure | 1.5 times the rated pressure |
| Dimensions (approx.) | Ø80mm × 30mm (gauge body) | Ø80mm × 30mm (gauge body) |
3. Dimensions
Diagram description: A diagram illustrating the physical dimensions of the pressure gauge. It shows a cylindrical unit with a front display and a threaded connection at the base. Key dimensions indicated are an approximate diameter of 80mm for the gauge body, a height of approximately 30mm for the gauge body, and a standard connection thread size of M20×1.5.
4. Installation and Use
Installation:
- Ensure the pressure gauge is suitable for the system's pressure range and medium.
- Clean the connection port before installation.
- Screw the gauge into the system's pressure port using the M20×1.5 thread. Use a wrench on the hexagonal part of the fitting, not the gauge body.
- Ensure a leak-free seal.
Connection Diagram Description: A schematic showing the pressure gauge's threaded port connected to a pipe fitting. Arrows indicate the direction of pressure flow into the gauge.
5. Operation Instructions
The LCD screen shows the current pressure reading and the selected unit.
Buttons:
- : Powers the device on/off.
- : Selects pressure units.
- : Sets the current reading to zero.
6. Maintenance
Cleaning: Clean the exterior of the gauge with a soft, damp cloth. Do not use solvents or abrasive cleaners.
Battery Replacement: When the battery indicator [BAT] appears on the screen, replace the batteries with two new AAA alkaline batteries. Ensure correct polarity.
Calibration: For critical applications, recalibration by a qualified technician is recommended annually or as per industry standards.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display | Batteries are depleted or incorrectly installed | Replace batteries or check polarity. |
| Reading is zero at pressure | Gauge is damaged or incorrectly installed | Check installation, ensure no leaks. Contact manufacturer if damaged. |
| Reading is unstable | System vibration or pressure fluctuations | Install gauge in a stable environment, use damping mechanisms if needed. |
| Incorrect unit displayed | Unit selection button pressed | Press the button to select the desired unit. |
| Gauge shows error code | Internal fault | Refer to error code list (if provided) or contact manufacturer. |
8. Safety Precautions
- Do not exceed the maximum rated pressure.
- Ensure the medium is compatible with the gauge materials.
- Avoid exposing the gauge to extreme temperatures or direct sunlight for prolonged periods.
- Handle the gauge with care to avoid physical damage.
- Use appropriate tools for installation to prevent damage to the connection threads.
- Ensure batteries are disposed of properly according to local regulations.
