Industrial Digital Pressure Gauge with Remote Communication for Automated Plants

Modern plants do not have time for manual gauge rounds. The QWY-40 industrial digital pressure gauge brings local readability and remote communication together: operators see pressure instantly on the digital display, while the plant control system receives the same data continuously for centralized monitoring, alarming and historical records.

Why Do You Need a Remote Communication Pressure Gauge?

Pressure gauges are installed on pumps, compressors, filters, pipelines and vessels scattered across the plant, and checking them manually is slow, error-prone and impossible outside working hours. A gauge that only shows a local reading leaves the control room blind to developing problems until they become emergencies. By adding remote communication, every pressure point becomes part of the automation system: values are continuously transmitted to the PLC or SCADA, alarms are raised the moment a limit is exceeded, and historical data supports maintenance decisions and quality records. For plants pursuing automation, energy efficiency and predictive maintenance, a digital gauge with remote communication turns a passive indicator into an active part of the control strategy.

Working Principle: Local Display Plus Remote Signal

The QWY-40 combines a high-precision pressure sensing element with a digital display and a remote communication output. Process pressure acts on the sensing diaphragm and is converted into an electrical signal, which drives both the local digital readout and the transmitted output, such as a 4-20 mA signal or switch output, that connects to the plant control system. The gauge is loop-powered at 24 V DC with a power consumption of less than 0.5 W, so it integrates into standard automation wiring without a separate supply. With linearity superior to 0.25%FS, the remote value matches the local display, giving operators and the control system the same trustworthy pressure data.

Structural Advantages of the QWY-40

• Remote communication output: pressure data reaches the control room automatically.
• High linearity superior to 0.25%FS: accurate values for both display and control.
• 24-month warranty: long-term reliability backed by the manufacturer.
• Wide ambient range -25 to +85 °C: dependable in plant and outdoor conditions.
• Low power consumption below 0.5 W at 24 V DC: loop-powered convenience.
• Integrated pressure switch: local alarm or control without extra hardware.
• 316L-compatible wetted parts: corrosion-resistant for industrial media.
• Polythene cable: durable, flexible electrical connection.

Pain Point Analysis: 4 Challenging Working Conditions

Application Cases

Product Advantages

• Remote communication for centralized plant monitoring
• High linearity superior to 0.25%FS
• 24-month manufacturer warranty
• Wide ambient temperature range -25 to +85 °C
• Low power consumption under 0.5 W at 24 V DC
• Integrated pressure switch function
• Corrosion-resistant 316L-compatible wetted parts
• Clear digital display with remote output combined
• Durable polythene cable
• OEM/ODM customization and fast delivery

Technical Parameters

SEO FAQ

Q1: What is a remote communication digital pressure gauge?

A remote communication digital pressure gauge combines a local digital pressure display with an output signal that transmits the pressure value to a remote control system. Unlike a traditional gauge, which only shows the pressure where it is mounted, this type of gauge sends the same measurement continuously to a PLC, DCS, SCADA or building management system over a standard signal such as 4-20 mA. This allows operators to monitor pressure from a control room, receive alarms automatically and record historical data. The QWY-40 is designed for industrial automation applications where local readability and remote visibility are both required, bridging the gap between a simple gauge and a full transmitter.

Q2: How does the remote communication output work?

The QWY-40 converts the measured pressure into a standard electrical output that carries the pressure value to the control system. The most common configuration is a 4-20 mA loop, where the current is proportional to the pressure: 4 mA at zero and 20 mA at full scale. The control system reads this current and converts it back into an engineering value such as bar or psi. The gauge also offers a switch output function that changes state when the pressure crosses a set point, which is ideal for alarms and interlock circuits. Because the gauge is loop-powered at 24 V DC with less than 0.5 W consumption, it connects into standard automation wiring simply and economically.

Q3: What are the benefits of remote pressure monitoring?

Remote pressure monitoring brings three major benefits. First, safety: pressure excursions are detected and alarmed immediately, even outside working hours, instead of waiting for the next manual round. Second, efficiency: operators no longer walk the plant to read gauges, and the control room has complete, real-time visibility of every pressure point. Third, data: continuous remote signals feed historians and reporting systems, providing the pressure records needed for quality audits, energy analysis and predictive maintenance. For automated plants, remote monitoring converts pressure gauges from passive indicators into active contributors to process reliability and continuous improvement.

Q4: What is the accuracy of the QWY-40?

The QWY-40 offers linearity superior to 0.25%FS, meaning the deviation of the output from an ideal straight line is less than 0.25% of the full-scale range. On a 10 bar gauge, this corresponds to an error of less than 25 mbar across the entire span. This level of accuracy is well suited to industrial automation applications such as machine supply pressure monitoring, pump control and process verification. Each unit is factory-calibrated at multiple points to confirm linearity, and the same calibrated value drives both the local display and the remote output, so the control room and the operator always see consistent data.

Q5: Can the gauge be used outdoors or in unheated areas?

Yes. The QWY-40 operates over an ambient temperature range of -25 °C to +85 °C, which covers outdoor installations, unheated pump houses, cold stores and hot machine areas alike. The wide range is achieved through careful electronic design and thermal compensation that keep the display and the output stable as the temperature changes. This makes the gauge suitable for applications such as remote pump stations, rooftop equipment and outdoor pipelines where seasonal temperature swings are significant. For installations exposed to direct rain or washdown, please also confirm the enclosure protection requirements with our engineers so the correct sealing configuration is supplied.

Q6: What is the switch function used for?

The switch function allows the QWY-40 to act as an alarm or control device as well as a gauge. You configure a set point, for example 8 bar, and the switch output changes state when the pressure rises above or falls below that value. This output can drive an alarm lamp, a siren, a PLC input or a relay that stops a pump or opens a valve. The switch function is especially valuable for protecting equipment: for example, shutting down a compressor if the discharge pressure becomes too high, or alarming when a filter is clogged because the differential pressure has increased. It eliminates the need for a separate pressure switch, saving cost and installation space.

Q7: Which media can the gauge measure?

The QWY-40 is compatible with media that do not attack 316L stainless steel, which covers the majority of industrial fluids and gases: water, oils, compressed air, hydraulic fluids, many chemicals, and food and beverage products. The wetted parts are designed for corrosion resistance and long service life in these media. For aggressive chemicals such as strong acids, or for hygienic applications requiring special connections, please discuss the application with our engineers before ordering. We can advise on material options and connection types, and where necessary recommend a chemical seal or a different instrument from our range to ensure reliable, safe measurement.

Q8: How is the gauge installed and wired?

Install the QWY-40 at the pressure tap using the appropriate process connection, with an isolation valve where the process must remain online during maintenance. Mount it so the display is readable and the diaphragm is protected from sediment buildup; in gas service, mount with the port below the body so condensate drains away. For wiring, connect the 24 V DC loop supply and the output signal according to the terminal diagram in the manual, observing correct polarity, and use a shielded cable for the 4-20 mA signal in electrically noisy areas. Route the cable with a drip loop and secure it with strain relief to protect the polythene cable and the termination.

Q9: What maintenance does the gauge require?

The QWY-40 is designed for low-maintenance service. Periodically check the process connection for leaks, verify the cable gland is tight, and confirm that the display and output agree with a reference measurement. The zero point can be checked by isolating the gauge and venting it to atmosphere; the reading should be zero, and a zero adjustment corrects minor deviations. In dirty or crystallizing media, clean the pressure port during scheduled maintenance. For quality-critical applications, perform an annual calibration check. With its 24-month warranty and stable design, the gauge typically operates for years with only these simple routine checks.

Q10: What warranty and support do you provide?

The QWY-40 is covered by a 24-month warranty against manufacturing defects under normal operating conditions, reflecting our confidence in its long-term reliability. Beyond the warranty, our technical team provides installation guidance, wiring support, configuration advice and troubleshooting assistance. As the manufacturer, we also offer OEM and ODM services including custom ranges, custom output configurations, special connections, labeling and packaging. Standard delivery takes 5-8 working days with a monthly capacity of 100 pieces. Contact us with your application details and we will recommend the right configuration and provide a quotation.

Why Choose Our Remote Communication Digital Pressure Gauge?

The QWY-40 gives your plant the best of both worlds: a clear local digital display for operators and a continuous remote signal for the control system, in one rugged, low-power instrument with 0.25%FS linearity and a 24-month warranty. As the manufacturer, you get direct pricing, factory calibration to your range, flexible OEM options and delivery in days. When your automation strategy demands that every pressure point is visible, choose the gauge that connects your plant.