1. Introduction
The Leaton T168 Digital Manometer is a professional air pressure meter designed for precise measurement of single pipe air pressure or differential pressure between two pipes. This handheld device is suitable for a wide range of applications including ventilation and air conditioning systems, gas pressure system troubleshooting, laboratory testing, and maintenance and installation of blowers, clean rooms, and boilers.
It features a large LCD backlight display for clear readability and is constructed from durable ABS material for long service life.
2. What's in the Box
- 1x Leaton T168 Digital Manometer
- 1x Owner's Manual
- 2x Soft Tubes
- 1x 9V Battery (included)
- 1x Carrying Case
3. Features
- Dual-Port Measurement: Capable of measuring both single pipe air pressure and differential pressure between two pipes.
Image: The manometer's dual ports for connecting tubes to measure differential pressure (P1-P2). - High Quality & Large LCD Backlight Display: Constructed from durable ABS material with excellent high-temperature and impact resistance. Features a 4.45CM × 4.95CM LCD display with backlight for clear visibility in various lighting conditions.
Image: A hand holding the Leaton T168 manometer, highlighting its large LCD screen and control buttons. - 12 Selectable Units: Supports measurement in kPa, psi, Kgcm², ozin², bar, mbar, Pa, inHg, mmHg, inH₂O, ftH₂O, and cmH₂O.
Image: The manometer's display indicating the wide range of selectable pressure units. - Data Storage & Reminder Functions: Includes data retention (HOLD mode) and DIF mode. Features a low battery reminder to indicate when charging is needed.
- Automatic Shut-down: For power saving.
4. Setup
- Battery Installation: Open the battery compartment on the back of the device and insert one 9V battery, ensuring correct polarity. Close the compartment securely.
- Tube Connection: Connect the provided soft tubes to the manometer's input ports. For single pipe measurement, use one port. For differential pressure, connect tubes to both P1(+) and P2(-) ports as required by your application.
- Power On: Press the Power button to turn on the device.
5. Operating Instructions
5.1 Basic Operation
- Power On/Off: Press the Power button to turn the manometer on or off.
- Unit Selection: Press the UNITS button to cycle through the 12 available pressure units (kPa, psi, Kgcm², ozin², bar, mbar, Pa, inHg, mmHg, inH₂O, ftH₂O, cmH₂O).
- Data Hold: Press the HOLD button to freeze the current reading on the display. Press again to release.
- Differential Mode (DIF): Press the DIF button to enter differential measurement mode, displaying the difference between two pressure inputs.
- Maximum/Minimum Mode (MAX/MIN): Press the MAX button to view the maximum or minimum pressure recorded during a measurement session.
- Zeroing the Meter: To ensure accurate readings, especially for low pressures, the meter can be zeroed. Refer to the "Product Parameter" diagram or the device's display for the "Data Record & Hold & Zero" function. Typically, this involves pressing a specific button (often the "DIF" or "HOLD" button when not actively measuring, or a dedicated "ZERO" button if present) while the device is exposed to ambient pressure, before connecting to the system under test.
- Temperature Display: The device also displays temperature. Use the °C/°F button to switch between Celsius and Fahrenheit.
5.2 Application Examples
The Leaton T168 is versatile for various professional and home applications:
- HVAC System diagnostics
- Air Conditioning & Ventilation System testing
- Clean Room pressure monitoring
- Furnaces & Boilers pressure checks
- Laboratory Testing
- Blower and fan performance assessment
6. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the manometer in its carrying case in a cool, dry place when not in use. Remove the battery if storing for extended periods to prevent leakage.
- Low Battery Reminder: The device will display a low battery indicator when power is running low. Replace the 9V battery promptly to ensure continuous operation and accurate readings.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows "Err 0" | Over Range Indicator | The measured pressure exceeds the device's maximum range. Reduce the pressure or use a device with a higher range. |
| Display shows "Err 1" | Under Range Indicator | The measured pressure is below the device's minimum range. Ensure proper connection and sufficient pressure for measurement. |
| Inaccurate or inconsistent readings |
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| Device does not power on |
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8. Specifications
| Parameter | Value |
|---|---|
| Model Number | T168 |
| Measuring Range | ±20.68 kPa / ±2.999 psi |
| Accuracy | ±0.3% FSO (at 25 °C) |
| Repeatability | ±0.2% (MAX ±0.5% FSO) |
| Linearity / Hysteresis | ±0.29% FSO |
| Response Time | 0.5 Seconds |
| Operating Conditions | 0 to 50 °C (32 to 122 °F) |
| Storage Temperature | -40 to 80 °C (-40 to 176 °F) |
| Product Dimensions (L x W x H) | 6.3 x 3.15 x 1.18 inches |
| Item Weight | 200 Grams (7.05 ounces) |
| Screen Size | 6.5 Inches |
| Power Source | 1 x 9V Battery |
| Material | ABS |
9. Warranty and Support
Leaton offers a 3-Year Warranty for damages caused by non-human factors. If you encounter any issues with your Leaton T168 Digital Manometer, please contact Leaton customer support. We are committed to providing assistance and will respond within 24 hours.
For support, please refer to the contact information provided in your product packaging or visit the official Leaton website.
