AUTOOL Digital Manometer User Manual

Product Introduction

This instrument is designed with imported pressure sensors, a high-precision ADC, and a low-power consumption MCU. It features a professional digital pressure gauge with high precision, a wide range, high resolution, a large screen display, and indoor temperature measurement. With a single channel, it can quickly measure the current detection pressure value (relative to the current atmospheric pressure). The dual channel allows simultaneous detection of the pressure difference between the two detection ports (P1-P2).

Product Usage

This product can be extensively used in various applications, including:

• Natural gas pipelines
• Air conditioning and refrigeration ventilation systems
• Mechanical hydraulics
• Plastic molding
• Ceramic products manufacturing
• Biopharmaceutical molding
• Mining pressure testing
• Petrochemical industrial smelting
• Gas, liquid, and production industrial equipment pressure detection
• Liquid level detection
• Laboratory calibration
• Medical environment micro-pressure testing

Technical Parameters

Details Description

The device display and key indicators are described as follows:

• ?️ 1. Temperature data\storage serial number
• ? 2. Low battery reminder
• ? 3. Keep the data mode (HOLD)
• ? 4. Maximum\Minimum Mode (MAX)
• ↔️ 5. Differential pressure mode (DIF)
• 6. Pressure data display
• 7. Pressure unit display

The screen displays current readings, MAX/MIN values, and units like mmHg, inHg, ftH2O, cmH2O, inH2O, Pa, KPa, mbar, bar, psi, Kgcm², ozin².

Structure Description

The physical layout of the digital manometer includes input ports, buttons, and a display screen.

Front View Components:

• ? 1. POWER button: Turns the device on/off, controls backlight.
• ?️ 2. °C/°F button: Stores measured pressure value, switches temperature units.
• ? 3. HOLD button: Locks current data, clears drift data.
• ? 4. UNITS button: Switches between pressure units, clears stored data.
• ↔️ 5. DIF button: Views stored data, enters differential pressure mode.
• ? 6. MAX button: Views stored data, enters maximum/minimum mode.
• 7. Display screen: Shows pressure data and units.
• ? 8. Positive pressure input channel P1.
• ? 9. Negative pressure input channel P2.

Rear View Components:

• 10. Battery compartment cover.

Operation Instruction of Buttons

Features and Specifications

Precautions

• ⚠️ The instrument should be kept away from vibration sources, strong electromagnetic fields, and areas with drastic temperature changes to avoid inaccurate data caused by vibration, electromagnetic interference, or temperature fluctuations.
• ☣️ When measuring corrosive and toxic gases or liquids, please take protective measures to avoid personal danger or damage to the instrument.
• ? When the instrument indicates a low battery, please replace the battery promptly. Remove the battery if the instrument will not be used for an extended period to prevent damage from liquid leakage.
• ? Do not exceed the maximum input value (±20KPa / 52kPa / 89kPa) when measuring pressure.
• When measuring the pressure of a single channel, do not block the other channel, nor should it face the windy direction. In this state, the instrument displays the differential value between the current measurement port and atmospheric pressure.
• When the interface displays "over range" during measurement, disconnect the vent. The displayed data will automatically return to normal. (Note: Pa unit can only be displayed up to 9999 and can be switched to the next KPa unit).
• ⚙️ Please press and hold the HOLD button to clear the zero point drift of the data under the current mode before measurement (before connecting to the air tube).

Warranty

Thank you for choosing AUTOOL products. We provide the following services and promises:

• The warranty period for this product is 1 year.
• After the warranty period expires, repairs will be charged for replacement parts.
• In case of failure, please contact the manufacturer for the most complete service in the shortest time.

Items Not Covered by Warranty:

• Vulnerable parts are not covered by the warranty, including: glass tube, signal sire, stickers, connectors, pressure gauge, oil outlet pipe.
• Turning on the ultrasonic cleaning switch without adding cleaning agent to the ultrasonic tank will damage the ultrasonic system, which is not covered by the warranty.
• If the testing agent is not replaced in time after long-term use, leading to a blocked oil pump filter screen and burned-out oil pump, this is not covered by the warranty.
• Using fuel injector cleaning agent as fuel injector testing agent will cause the fuel pump to burn out, which is not covered by the warranty.
• Man-made faults are not covered by the warranty.

Disclaimer

All information, illustrations, and specifications contained in this manual are subject to change by AUTOOL without prior notice. The physical appearance and color may differ from what is shown in the manual; please refer to the actual product. Every effort has been made to ensure the accuracy of descriptions, but inaccuracies may still exist. If in doubt, please contact your dealer or AUTOOL after-service center. AUTOOL is not responsible for any consequences arising from misunderstandings.