1. Introducere
The AOPUTTRIVER AP-189A is a high-precision digital manometer designed for measuring differential, positive, and negative pressure. It is widely used in various applications including flow measurement, air quality monitoring, level measurement, gas temperature measurement, and HVAC system control. This manual provides detailed instructions for the safe and effective use of your device.
The device features a large LCD with backlight, data hold function, automatic power-off, and the ability to record maximum, minimum, and average values, as well as differential pressure (DIF). It supports 11 selectable pressure units for versatility in professional applications.
2. Caracteristicile produsului
- Precizie ridicată: Measurement range of ±2.000psi with an accuracy of ±0.3%FSO (at 25°C).
- Unități multiple: Easily switch between 11 pressure units: Psi, kPa, Kgfcm2, ozin2, Bar, mbar, inHg, mmHg, inH2O, ftH2O, cmH2O.
- Înregistrare date: Records MAX/MIN/AVG values for easy data analysis.
- Setare zero: Allows for precise zero calibration before measurements.
- Afișaj multifuncțional: Large LCD with backlight for clear readings.
- Gestionare a energiei: Low battery indicator and automatic power-off after 25 minutes of inactivity to conserve battery life.
- DIF Function: Measures differential pressure.

Imagine: Pesteview of the AP-189A Digital Manometer's key features and specifications, including accuracy, repeatability, maximum pressure, and various functions like data hold, auto-off, and unit selection.
3. Conținutul pachetului
Verificați dacă toate articolele sunt prezente și în stare bună la deschiderea coletului:
- 1 x AP-189A Digital Manometer
- 1 x Geantă de protecție
- 1 x șurubelniță mică
- 2 baterii AAA de 1.5 V
- 1 x Manual de utilizare (în japoneză)

Image: The complete package contents of the AP-189A Digital Manometer, showing the device, a protective carrying bag, a small screwdriver, two AAA batteries, and the user manual.
4. Configurare
4.1 Instalarea bateriei
- Localizați capacul compartimentului bateriei pe spatele dispozitivului.
- Use the provided small screwdriver to open the battery compartment.
- Introduceți două baterii AAA de 1.5 V, asigurându-vă că polaritatea este corectă (+/-).
- Puneți la loc capacul compartimentului bateriei și fixați-l cu șurubul.
4.2 Conectarea furtunurilor
The AP-189A features dual ports for differential pressure measurement. Connect the hoses to the appropriate ports (+ and -) based on your measurement requirements. Ensure a secure connection to prevent leaks.

Imagine: O imagine detaliată view of the AP-189A Digital Manometer, highlighting its dimensions and the dual port connections at the top for pressure hoses.
5. Instrucțiuni de utilizare
5.1 Pornire/Oprire
- Apăsați tasta Buton de alimentare (
) pentru a porni dispozitivul. - Țineți apăsat butonul Buton de alimentare for a few seconds to turn the device OFF.
5.2 Setarea la zero
Before taking any measurements, it is crucial to perform a zero setting to ensure accuracy. Disconnect all pressure hoses from the device before performing this step.
- Ensure the device is powered on and no pressure is applied to the ports.
- Țineți apăsat butonul ȚINE butonul pentru aproximativ 5 secunde.
- The display will show "----" indicating that the zero setting is complete.

Image: Visual guide demonstrating how to perform a zero setting on the manometer by long-pressing the HOLD button until the display shows dashes.
5.3 Selectarea unității
Apăsați tasta UNITATE button to cycle through the 11 available pressure units (Psi, kPa, Kgfcm2, ozin2, Bar, mbar, inHg, mmHg, inH2O, ftH2O, cmH2O) until your desired unit is displayed.
5.4 Funcția de iluminare din spate
Apăsați tasta Buton pentru iluminare de fundal (
) to turn the LCD backlight ON or OFF for improved visibility in low-light conditions.
5.5 Reținerea datelor
Apăsați tasta ȚINE button briefly to freeze the current reading on the display. Press it again to release the hold function and resume live readings.
5.6 MAX/MIN/AVG/DIF Recording
Apăsați tasta REC button to enter recording mode. In this mode, the device will track the maximum, minimum, and average pressure values. Press REC repeatedly to cycle through MAX, MIN, AVG, and DIF displays. To exit recording mode, press and hold the REC buton.
5.7 Oprire automată
The device will automatically power off after 25 minutes of inactivity to save battery life. This feature can typically be disabled or adjusted by pressing and holding specific buttons during power-on, as detailed in the full manual.

Image: A close-up of the AP-189A's LCD screen and control buttons, illustrating the functions of the Power, Hold, Unit, Backlight, Record, and DIF buttons.
6. Întreținere
- curatenie: Ștergeți dispozitivul cu o lavetă moale și uscată. Nu utilizați substanțe de curățare abrazive sau solvenți.
- Depozitare: Store the manometer in its protective bag in a cool, dry place when not in use. Remove batteries if storing for extended periods to prevent leakage.
- Calibrare: Regular calibration by a qualified technician is recommended to maintain measurement accuracy, especially for critical applications.
- Înlocuire baterie: Replace batteries promptly when the low battery indicator appears to ensure continuous operation and prevent data loss.
7. Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Dispozitivul nu pornește | Baterii uzate sau instalate incorect | Verificați polaritatea bateriilor; înlocuiți bateriile. |
| Citiri inexacte | No zero setting performed; sensor obstruction; device not calibrated | Perform zero setting; ensure ports are clear; consider professional calibration. |
| Display shows "OL" or "Err" | Overload (pressure exceeds maximum limit) | Remove pressure immediately. Ensure pressure does not exceed 6 Psi. |
| Lumina de fundal nu funcționează | Backlight function off; low battery | Press the backlight button; replace batteries. |
8. Specificații
- Interval de măsurare: ± 2.000 psi
- Precizie: ±0.3% FSO4 (la 25°C)
- Repetabilitate: ±0.25% FSO
- Linearity/Hysteresis: ±0.1% FSO
- Limited Maximum Pressure: 6 Psi
- Unități: Psi, kPa, Kgfcm2, ozin2, Bar, mbar, inHg, mmHg, inH2O, ftH2O, cmH2O
- Functii: Backlight, Data Hold, Auto Power Off (25 min), MAX/MIN/AVG/DIF, Zero Setting
- Alimentare electrică: 2 baterii AAA de 1.5 V
- Dimensiuni: Aproximativ 166 mm x 62 mm x 31 mm (6.29 in x 2.44 in x 1.22 in)
- Greutate: Aproximativ 250 g

Image: A diagram illustrating the physical dimensions of the AP-189A Digital Manometer, including length, width, and thickness.
9. Garanție și asistență
The AOPUTTRIVER AP-189A Digital Manometer comes with a 365-day warranty and lifetime technical support. If you encounter any quality issues with the product, please contact our customer support team. We are committed to resolving any problems as quickly as possible.
For support, please refer to the contact information provided in your product packaging or visit the official AOPUTTRIVER website-ul.