Introduction
This manual provides essential information for the safe and efficient operation of your DOPZNJWF QDX50A Pressure Sensor Transmitter. Please read this manual thoroughly before installation and use, and retain it for future reference.
Safety Information
Important Safety Instructions:
- Always disconnect power before installation or maintenance.
- Ensure proper grounding to prevent electrical shock.
- Do not exceed the specified pressure range of the sensor.
- Avoid exposing the sensor to corrosive substances unless specifically designed for such environments.
- Installation should be performed by qualified personnel.
- Refer to local electrical codes and regulations during installation.
Product Overview
The DOPZNJWF QDX50A is a high-accuracy pressure sensor transmitter designed for precise pressure measurement in various industrial applications. This specific model measures pressure in the range of 0-0.1 bar and provides an RS485 digital output.
Key Features:
- High accuracy for reliable measurements.
- Stable performance over extended periods.
- Compact and lightweight design for easy installation.
- RS485 digital communication output.

Figure 1: Front view of the DOPZNJWF QDX50A Pressure Sensor Transmitter, showing the threaded pressure inlet and the electrical connector.

Figure 2: Two DOPZNJWF QDX50A Pressure Sensor Transmitters, illustrating the compact design and connection points from different perspectives.
Setup and Installation
- Unpacking: Carefully remove the sensor from its packaging. Inspect for any visible damage.
- Mounting: The sensor features a standard threaded connection for pressure input. Ensure the mounting location is stable and free from excessive vibration. Apply appropriate thread sealant if necessary to prevent leaks.
- Electrical Connection: Connect the sensor to your control system using the RS485 interface. Refer to the wiring diagram (not provided in this manual, consult product documentation) for correct pin assignments. Ensure all connections are secure and properly insulated.
- Power Supply: Provide a stable DC power supply within the specified voltage range (refer to product label). Incorrect voltage can damage the sensor.
- System Integration: Integrate the RS485 output with your data acquisition or control system. Configure your system to communicate with the sensor using the appropriate RS485 protocol settings (e.g., baud rate, parity, stop bits).
Operating Instructions
- Power On: Once installed and wired correctly, apply power to the sensor.
- Data Acquisition: Your control system should now be able to read pressure data from the sensor via the RS485 interface.
- Monitoring: Continuously monitor the pressure readings. Ensure they are within the expected range for your application.
- Calibration Check: Periodically verify the sensor's readings against a known reference pressure source to ensure accuracy.
Maintenance
The DOPZNJWF QDX50A Pressure Sensor Transmitter is designed for minimal maintenance. However, regular checks can prolong its lifespan and ensure accurate operation:
- Cleaning: Keep the sensor's exterior clean. Avoid using harsh chemicals that could damage the housing or seals.
- Connection Check: Periodically inspect electrical and pressure connections for tightness and signs of corrosion or wear.
- Environmental Conditions: Ensure the sensor operates within its specified environmental conditions (temperature, humidity) to prevent premature failure.
- Recalibration: Depending on the application and required accuracy, periodic recalibration may be necessary. Consult a qualified technician for recalibration services.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No output/Incorrect readings |
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| Fluctuating readings |
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| Communication errors |
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Specifications
| Parameter | Value |
|---|---|
| Model | QDX50A |
| Pressure Range | 0-0.1 bar |
| Output Signal | RS485 |
| Power Supply | Refer to product label for specific voltage (typically 12-36V DC) |
| Accuracy | High accuracy (specific value not provided, refer to product datasheet) |
| Dimensions (Package) | 1.18 x 0.79 x 0.39 inches |
| Weight | 10.6 ounces |
Warranty and Support
For warranty information and technical support, please refer to the product packaging or contact DOPZNJWF customer service. Keep your purchase receipt for warranty claims.