1. Introdución
This manual provides detailed instructions for the proper use and maintenance of the Elitech PG-30Pro Digital Pressure Gauge. This device is designed for accurate pressure measurement in refrigeration and HVAC systems. Please read this manual thoroughly before operation to ensure correct usage and to prevent damage.
Figure 1: Elitech PG-30Pro Digital Pressure Gauge. This image displays the front view of the digital pressure gauge, featuring a blue face with a clear LCD screen, power button, 'SET' button, and 'ZERO' button. The 1/8'' NPT connection is visible at the bottom.
2. Características do produto
- Stable and Reliable Sensor: Utilizes a temperature-compensated pressure sensor, ensuring temperature drift does not exceed ±0.04%FS/℃.
- LCD Screen & Blue Backlight Display: Features a partitioned display for various measurements, providing direct readings for all parameters. The blue backlight enhances visibility in low-light conditions.
- Various Refrigerants Options: Includes a built-in PT (Pressure-Temperature) comparison table for 87 common refrigerants, facilitating convenient selection.
- Función cero: Allows for zeroing out any deviation at the zero point to correct the system and ensure accurate measurements.
- Overload Warning Indications: Displays 'ALARM' on the screen for overload conditions. If the overload is excessively high, 'ALARM' and the backlight will flash simultaneously.
- Max/Min Value Display and Reset: Records maximum and minimum pressure values, with an option to reset these values.
- Auto Shut-Off Setting: Features an automatic shut-off function to conserve battery power during periods of inactivity.
- Adjustable Temperature and Pressure Units: Supports various temperature units (°C / °F) and pressure units (psi, kg/cm², cmHg, bar, kPa, Mpa, kg/cm²).
- 1/8-inch NPT Fitting: Equipped with a standard 1/8-inch NPT fitting for broad compatibility with various systems.
Figura 2: Máisview of Elitech PG-30Pro features. This graphic highlights key functionalities such as backlight display, Max/Min value, zeroing, refrigerant support, auto shut-off, and adjustable units.
Figure 3: Refrigerant compatibility of the Elitech PG-30Pro. This image illustrates the gauge's ability to work with over 90 types of refrigerants, including R12, R22, R134a, R290, R401A, R403A, R740, R744, R601, R143A, R32, R21, and R1234yf.
3. Configuración
3.1 Instalación da batería
- Localiza a tapa do compartimento da batería na parte traseira do dispositivo.
- Remove the cover by twisting or sliding it according to the markings.
- Insira dúas (2) pilas AAA, asegurándose de manter a polaridade correcta (+/-) como se indica no interior do compartimento.
- Coloque a tapa do compartimento da batería de forma segura.
3.2 Conexión inicial
- Ensure the system to which the gauge will be connected is depressurized or isolated.
- Carefully thread the 1/8'' NPT fitting of the digital pressure gauge onto the appropriate port of your HVAC or refrigeration system.
- Tighten the connection firmly by hand, then use a wrench for a final snug turn to prevent leaks. Do not overtighten.
Figure 4: Dimensions and 1/8-inch NPT fitting. This image shows the physical dimensions of the gauge and highlights the 1/8-inch NPT threaded connection for system integration.
4. Instrucións de funcionamento
4.1 Encendido/apagado
- Para acender o dispositivo, prema Poder button (⏻) located at the top of the gauge.
- Para apagar o dispositivo, manteña premido o botón Poder button (⏻) for approximately 3 seconds until the display turns off.
4.2 Función cero
The zero function is used to correct any minor deviations at the zero pressure point before taking a measurement.
- Ensure the gauge is disconnected from any pressure source and is at ambient atmospheric pressure.
- Preme o CERO button (▶) located at the bottom right of the gauge. The display should show 0.000 psi (or selected pressure unit).
Figure 5: Zeroing function button. This image highlights the 'ZERO' button on the gauge, indicating its use for resetting the pressure reading to zero.
4.3 Changing Units (Pressure/Temperature)
To cycle through available pressure and temperature units:
- Preme o SET button (◀) to enter the unit selection mode.
- Usa o CERO button (▶) to cycle through the available pressure units (psi, kg/cm², cmHg, bar, kPa, Mpa, kg/cm²).
- Preme o SET button (◀) again to switch to temperature unit selection.
- Usa o CERO button (▶) to select between °C and °F.
- Preme o SET button (◀) to confirm your selection and exit unit setting mode.
Figure 6: Adjustable temperature and pressure units. This graphic illustrates the various units available for both temperature (°C / °F) and pressure (psi, kg/cm², cmHg, bar, kPa, Mpa, kg/cm²).
4.4 Selecting Refrigerants
The gauge has a built-in database of refrigerants for PT comparison.
- While in normal measurement mode, press and hold the SET button (◀) to enter refrigerant selection mode.
- Usa o CERO button (▶) to scroll through the list of available refrigerants.
- Once the desired refrigerant is displayed, press the SET button (◀) to confirm your selection and return to measurement mode.
4.5 Lectura de medidas
Once connected and powered on, the gauge will display the current pressure and corresponding saturation temperature for the selected refrigerant on its LCD screen.
4.6 Max/Min Value Display and Reset
Para view the recorded maximum and minimum pressure values:
- Prema brevemente o Poder button (⏻) during operation to cycle through current, maximum, and minimum pressure readings.
- To reset the recorded Max/Min values, press and hold the CERO button (▶) while the Max/Min values are displayed.
Figure 7: Max/Min value display and reset. This image illustrates how the power button is used to cycle through readings and the zero button to reset recorded maximum and minimum values.
4.7 Auto Shut-Off Setting
The gauge features an adjustable auto shut-off time to conserve battery life.
- To adjust the auto shut-off time, press and hold the SET button (◀) until the auto shut-off setting appears.
- Usa o CERO button (▶) to cycle through the available time options (e.g., 10 minutes, 20 minutes, Off).
- Preme o SET button (◀) to confirm your selection.
Figure 8: Auto shut-off setting. This image highlights the 'SET' button, used for configuring the automatic power-off duration to save battery life.
5. Mantemento
5.1 Limpeza
- Wipe the exterior of the gauge with a soft, damp pano. Non use produtos de limpeza ou disolventes abrasivos.
- Ensure no moisture enters the sensor port or battery compartment.
5.2 Substitución da batería
- Substitúa as pilas cando apareza o indicador de pila baixa na pantalla.
- Siga os pasos de instalación da batería descritos na Sección 3.1.
- Elimina as baterías usadas segundo a normativa local.
5.3 Almacenamento
- Store the gauge in a dry, cool place away from direct sunlight and extreme temperatures.
- Se o gardas durante un período prolongado, retira as baterías para evitar fugas.
6 Solución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| Gauge does not power on | Baterías agotadas ou mal instaladas | Substitúa as pilas, asegurándose de que a polaridade sexa correcta. |
| Lectura de presión imprecisa | Gauge not zeroed; Sensor contamination; Incorrect unit selected | Perform zero function; Clean sensor port if accessible; Verify selected pressure unit. |
| Display shows 'ALARM' or flashes | Pressure overload | Immediately disconnect from pressure source. The gauge is operating beyond its specified range. |
| A luz de fondo non funciona | Low battery; Backlight setting off | Replace batteries; Check if backlight can be toggled (refer to operating instructions). |
7. Especificacións
| Especificación | Detalle |
|---|---|
| Número de modelo | PG-30 |
| Rango de presión | -14.5 a 500 PSI |
| Tipo de conexión | 1/8'' NPT |
| Deriva de temperatura | ±0.04%FS/℃ |
| Soporte de refrixerante | 87 types built-in |
| Fonte de enerxía | 2 pilas AAA |
| Material | Plástico |
| Dimensións do produto (L x W x H) | 6.3 x 4.72 x 8.27 polgadas |
| Peso do elemento | 8.89 onzas |
8. Garantía e soporte
8.1 Información da garantía
The Elitech PG-30Pro Digital Pressure Gauge comes with a 12 meses de garantía from the date of purchase, covering manufacturing defects and malfunctions under normal use. This warranty does not cover damage caused by misuse, accident, unauthorized modification, or improper installation.
8.2 Soporte técnico
For technical assistance, troubleshooting, or warranty claims, please contact Elitech customer support. 24/7 US Technician Support is available via email and phone.
- Correo electrónico: Refer to product packaging or Elitech official websitio para os detalles de contacto.
- Teléfono: Refer to product packaging or Elitech official websitio para os detalles de contacto.
