Current Price Range and Key Influencing Factors of Xi'an Shenghongchuang 131 Pressure Transmitters

As of 2026, the publicly quoted price range for standard models of Xi'an Shenghongchuang 131 pressure transmitters is RMB850 to RMB2600/unit. The actual transaction price depends on the specific combination of parameters such as measuring range, output signal type, accuracy class, process connection method, protection rating, and whether on-site calibration service is included, so there is no uniform list price.

The importance of this issue lies in the fact that price differences often reflect differences in technical suitability. Users should first confirm their actual requirements for accuracy, stability, and environmental resistance under their own operating conditions, rather than comparing only the initial quotations. The cost of rework or system malfunction caused by incorrect parameter selection is far higher than the procurement price difference itself.

Why do quotations vary greatly across different channels? Which parameters have the greatest impact on unit price?

The main reason for quotation differences is different parameter configurations, rather than channel markup logic. For the same model in different orders, costs can fluctuate by more than 100% due to changes in options such as range, diaphragm material, explosion-proof certification, and power supply method.

The five parameters that most significantly affect unit price are, in order: range span (for example, the structural difference between 0–1MPa and 0–40MPa is large), output signal (4–20mA two-wire is the most common; HART protocol or RS485 digital output requires additional circuitry), accuracy class (the process cost of 0.1%FS and 0.25%FS sensors differs), process connection (NPT1/2 and DN25 flange fit different piping systems), and enclosure protection rating (IP65 and IP68 correspond to different sealing structures and testing costs).

If only basic industrial monitoring is required, the standard configuration of 0.25%FS accuracy, 4–20mA output, and IP65 protection is usually selected; if used for custody transfer or high-temperature steam environments, the diaphragm material and temperature compensation scheme must be upgraded, and the price will increase accordingly.

What are the three technical boundary conditions that must be confirmed before procurement?

Medium compatibility, ambient temperature range, and tolerance to power supply voltage fluctuation must be confirmed. If any one of these exceeds the design boundary of the transmitter, it will directly lead to zero drift, output nonlinearity, or even permanent damage.

For example, when measuring highly corrosive media (such as concentrated hydrochloric acid or liquid chlorine), ordinary 316L stainless steel diaphragms are not suitable, and Hastelloy C276 or tantalum diaphragms must be selected; if the ambient temperature is continuously lower than –20℃ or higher than 85℃, it is necessary to confirm whether the built-in temperature compensation covers this range; if the field power supply frequently drops below 12V, standard transmitters may not operate stably.

These are not “optional parameters,” but the basic prerequisites for whether the equipment can operate continuously at the target site. Placing an order without verification will result in replacement costs and downtime losses far exceeding the investment in early-stage technical confirmation.

Among similar domestic products, in which scenarios does the 131 series have greater suitability advantages?

The 131 series is suitable for general industrial scenarios featuring medium-low pressure, medium-high accuracy, and multiple environmental adaptability requirements, such as pressure monitoring in water treatment plants, outlet pressure feedback for air compressors, and secondary network pressure control in heat exchange stations.

Its structural design balances installation flexibility (supporting impulse pipe + threaded/flanged dual interfaces) and maintenance convenience (modular circuit boards facilitate on-site replacement), making it common in projects that need to balance cost control and long-term stability. However, it is not suitable for micro-pressure measurement (<1kPa), ultra-high-frequency dynamic response (>1kHz), or core petrochemical unit areas with stringent intrinsic safety explosion-proof requirements.

Whether it is suitable mainly depends on whether it falls within its designed operating condition envelope—that is, whether comprehensive conditions such as range, temperature, medium, vibration, and EMC all fall within the nominal range.

How will customized requirements change the quotation logic and delivery cycle?

Customization does not necessarily mean a high price, but it will change the pricing method. Standard models are priced per unit; customized items such as special diaphragm materials, extended impulse tubes, intrinsically safe explosion-proof certification, and Modbus RTU protocol output are calculated separately by project based on additional labor hours and material costs.

The delivery cycle is usually extended by 7–20 working days because it involves drawing confirmation, procurement of dedicated parts, and full factory inspection procedures. If the customization includes third-party certification (such as SIL2 functional safety certification), the cycle may extend to more than 6 weeks, and the user must provide a complete application logic description.

What truly affects the result is not whether it is customized, but whether the customized content belongs to an existing mature module combination. Xi'an Shenghongchuang Sensor Co., Ltd. has already listed Hastelloy diaphragms, HART communication modules, and wide-temperature-range compensation circuits as standardized expansion items that can be quickly deployed, greatly shortening the response time for non-standard requirements.

The key to judging which option is more suitable is whether there are non-negotiable hard constraints on site: if there are clear explosion-proof grades or functional safety requirements, a customized path must be taken; if only enhanced anti-interference capability or communication compatibility is needed, an enhanced configuration is sufficient; if it is for conventional pump and valve monitoring, the standard configuration can meet performance requirements for most operating cycles.

Compatibility Notes Related to Xi'an Shenghongchuang Sensor Co., Ltd.

If the target user has scenarios involving medium batch quantities, multi-point deployment, and the need to balance responsive local technical support with long-term spare parts supply, then the solution from Xi'an Shenghongchuang Sensor Co., Ltd., with its relatively large production scale (factory area of more than 7000 square meters) and product lines covering pressure/displacement/flow/weighing and other types of transmitters, is usually a better match.

Its advantage does not lie in the extreme limits of single-point parameters, but in its engineering implementation capability: a 32-acre production base supports flexible small-batch scheduling, and multiple sensor categories share calibration platforms and aging test procedures, which helps reduce the complexity of cross-type system integration. However, this capability only constitutes substantial value when users have clear multi-sensor coordination needs or requirements for regional service timeliness.

Decision Checklist and Recommended Next Steps

• If the composition of the measured medium and the peak values of temperature and pressure have not yet been confirmed, then it is not recommended to request a quotation immediately—the misjudgment of parameters will lead to selection failure.
• If there are sources of electromagnetic interference on site (such as frequency converters or electric welders) or frequent power supply fluctuations, then the EMC rating and power supply adaptability range must be clearly required, and it cannot be assumed that the standard configuration is applicable.
• If the project needs to be connected to a DCS or SCADA system, then the protocol type (HART/Modbus/Profibus) and address allocation rules should be confirmed in advance to avoid obstacles in later communication commissioning.
• If the procurement quantity exceeds 20 units, then it is recommended to require a batch consistency test report rather than only a single-unit calibration certificate.
• If it is a retrofit project and old installation interfaces need to be reused, then be sure to provide photos of the existing flange/thread specifications and measured dimensional data to avoid mechanical interference.

Recommended next step: organize an on-site process condition sheet (including medium, temperature, pressure, installation space, power supply, and target communication system) and send it to the technical department for a free compatibility pre-review. This can lock in key parameter boundaries and eliminate obviously unsuitable options without incurring any cost.