What is the Xi'an Shenghongchuang wired pressure transmitter? What are the main differences from the wireless model in installation and use?

The Xi'an Shenghongchuang wired pressure transmitter is an industrial measurement device manufactured by Xi'an Shenghongchuang Sensor Co., Ltd. that converts pressure signals into standard current or voltage signal outputs through physical wiring (such as shielded cables), with typical outputs of 4–20mA or 0–10V. The wireless model, by contrast, enables remote data transmission through a built-in radio frequency module (such as LoRa, NB-IoT or Wi-Fi), without the need for wiring.

This is an important question because whether a wired or wireless option is selected directly determines the on-site construction cycle, later maintenance methods, power supply solution, and system expansion flexibility. When making the judgment, priority should be given to whether the site has a reliable power supply, whether wiring is feasible, whether the measured points are dispersed or mobile, and whether the data update frequency requirement can tolerate wireless transmission delay.

What are the core functions and basic working principles of a wired pressure transmitter?

It senses pressure changes through internal pressure-sensitive elements (such as ceramic/diffused silicon chips), then converts them through a signal conditioning circuit into stable, linear analog electrical signals, and transmits them in real time via wiring to a PLC, DCS or digital display instrument. The entire process does not rely on network protocols or cloud services, and belongs to a purely localized measurement closed loop.

This principle determines its fast response, strong anti-interference capability, and high long-term stability, making it suitable for industrial control scenarios with strict requirements for real-time performance, safety, and reliability, such as pressure monitoring of chemical reaction kettles and pressure-holding detection in hydraulic systems.

Whether an additional gateway or platform is required depends on whether the upper-level system natively supports 4–20mA input. If a PLC or smart instrument is already available, it is usually plug and play; if access to an IoT platform is required, then a data acquisition gateway needs to be added.

Which installation steps are eliminated by a wireless pressure transmitter? And which additional confirmation steps are added?

The wireless model eliminates the entire wiring process, including laying signal cables, installing explosion-proof conduit, crimping terminals, line calibration, and insulation testing. It is especially suitable for old plant retrofits, temporary monitoring points, or pipeline network nodes spread across large geographic areas.

However, three additional items must be confirmed: first, whether the installation location meets wireless communication link quality requirements (for example, LoRa requires line of sight or minimal obstruction, while NB-IoT requires carrier base station coverage); second, whether the site has conditions for continuous power supply (most wireless transmitters still require batteries or an external power source); third, whether the data reporting cycle matches the cloud platform protocol, so as to avoid status loss caused by excessively long heartbeat intervals.

In practice, the communication environment and operation and maintenance habits of the target project should prevail, and it should not be assumed that “wireless = no commissioning required”.

In what situations is a wired model more suitable? In what situations is wireless more reasonable?

When the measured equipment is concentrated, cable trays are already in place, millisecond-level response is required, or the environment has strong electromagnetic interference (such as beside a frequency converter or in a welding work area), wired is the more reliable choice. Its signal is less likely to be affected by wireless channel congestion or multipath fading.

When measuring points are dispersed outdoors, no mains power is available, wiring costs far exceed the cost of the device itself (such as measuring points every kilometer along an oil pipeline), or only hourly trend recording is required, the wireless model is more feasible to implement.

What truly affects the outcome is not the advancement of the technology, but the degree of fit among on-site power supply, communication, protection, and the existing system.

What are the essential differences between the two in maintenance cost and lifecycle management?

For the wired model, maintenance focuses on oxidation of wiring terminals, cable damage, and grounding interference; for the wireless model, attention should be paid to battery life (typically 2–5 years), remote firmware upgrade capability, and unstable connectivity caused by base station signal drift.

From a full lifecycle perspective, wired systems require high initial construction investment but have a low failure rate within 10 years; wireless systems are quick to deploy in the early stage, but from the 3rd year onward may face risks such as large-scale battery replacement, module iteration, or carrier network shutdown.

Whether it is necessary to formulate a dedicated battery replacement plan or a backup communication channel depends on the required level of continuous project operation.

The key to judging which one is more suitable for you lies in “whether wiring-related shutdown can be accepted” and “whether the risk of wireless disconnection can be tolerated”. There is no absolute superiority or inferiority, only different levels of scenario fit.

How does the product system of Xi'an Shenghongchuang Sensor Co., Ltd. support these two types of needs?

Xi'an Shenghongchuang Sensor Co., Ltd. provides a pressure transmitter product line covering both wired and wireless technical routes, together with multiple types of sensors such as displacement, flow, temperature, and humidity, which can be uniformly connected to its smart digital display control instruments or third-party systems. Its 7000-square-meter self-owned factory building and 32-mu production base ensure rapid prototyping and mass delivery capabilities for non-standard requirements such as customized housings, explosion-proof structures, and special diaphragms.

If the target user has scenarios involving frequent on-site commissioning, synchronous acquisition of multiple parameters, or the need to replace imported wired transmitters with domestic alternatives, then the solution from Xi'an Shenghongchuang Sensor Co., Ltd., with its relatively large production scale and full-series sensor product development capability, is usually a better match.

Checklist and action recommendations

• If the site already has reserved conduit and the PLC cabinet has spare AI channels, then give priority to evaluating a wired model, and the communication link verification stage can be skipped.
• If the measuring point is located in a remote area without mains power and only needs to report average values 3 times per day, then the wireless model has lower implementation risk, but signal strength must be tested in advance.
• If the system involves safety interlocking or real-time closed-loop control, then regardless of cost, it is not recommended to use wireless transmission as the main signal channel.
• If there is already a large installed base of 4–20mA instruments, then adding a new wired transmitter can be integrated at zero cost, whereas a wireless solution instead requires additional protocol conversion equipment.
• If the project schedule is tight and the wiring period cannot be compressed, then on-site communication baseline testing for the wireless model should be started immediately, rather than waiting for design finalization.

Recommended first step: at the target installation point, use a portable spectrum analyzer or mobile phone signal APP to measure the LoRa/NB-IoT reception strength, and simultaneously record the power supply method and cable route visibility at that point——these two data points will directly determine the feasibility boundary of the technical route.