Introduction

In the field of industrial automation, the performance of diffused silicon pressure sensors directly affects system stability. This article provides a measured comparison of two mainstream pressure transmitters, AST-C1000 and DG1300, with an in-depth analysis from the dimensions of accuracy, stability, and cost performance, providing authoritative purchasing guidance for technical evaluators. As a professional sensor manufacturer, Xi'an Shenghongchuang Instrumentation Co., Ltd. reveals which product is better suited to demanding operating conditions.

Diffused silicon pressure sensors, due to their high accuracy, long-term stability, and corrosion resistance, have become core components in flow control equipment. Technical evaluators often face a selection challenge: how to identify products truly suitable for high-temperature, high-pressure, or corrosive media environments among numerous manufacturers? Based on laboratory data and field testing of the AST-C1000 and DG1300-BZ-A-2-210/CJ/GZ pressure transmitters, this report provides objective performance benchmarks.

I. Measured Comparison of Core Parameters

1.1 Accuracy and Linearity Performance

Within the 0-10MPa measuring range, the AST-C1000 pressure transmitter achieves an accuracy of ±0.075%FS, better than DG1300's ±0.1%FS. Through five cyclic pressure tests, the repeatability error of the AST-C1000 remained stable within 0.02%, while the DG1300 showed a deviation of 0.035% in the high-pressure section (8-10MPa), which may be related to the stress compensation design of the diffused silicon chip.

1.2 Environmental Adaptability Test

Under a simulated acidic gas environment (H2S concentration 50ppm), a comparison between the 316L stainless steel isolation diaphragm used in the AST-C1000 and the Hastelloy C276 used in the DG1300 shows that neither exhibited corrosion after 1000 hours of testing, but the AST-C1000 has a wider temperature compensation range (-40℃~125℃ vs -30℃~85℃), making it more suitable for scenarios with large temperature differences such as oil refineries. It is worth noting that the PTS702Q-400M-MA-C-M20 pressure transmitter demonstrated stronger tolerance to extreme temperatures in similar tests.

II. In-Depth Analysis of Key Performance

2.1 Differences in Signal Processing Capability

The AST-C1000 has a built-in 24-bit ADC chip, with a sampling rate of 1kHz for mV-level weak signals, while the DG1300-BZ-A-2-210/CJ/GZ pressure transmitter uses a 16-bit ADC and shows a 0.3% peak capture delay when measuring rapid pulsating pressure. For hydraulic systems requiring high-frequency response, it is recommended to give priority to the AST-C1000 or ZY800-V1-B1-C1-J1P1 pressure transmitter.

• AST-C1000 advantages: Adjustable digital filtering, supports dual outputs of RS485 and 4-20mA
• DG1300 features: Simplified analog output circuit, suitable for retrofitting legacy systems

2.2 Structural Design and Maintenance Cost

Disassembly analysis shows that the AST-C1000 adopts a modular design, allowing the sensor core and circuit board to be replaced independently, thereby reducing later maintenance costs. In contrast, although the integrated packaging of the DG1300 has a protection rating of IP68, it requires complete replacement after failure. Based on a 10-year service life calculation, the total cost of ownership of the AST-C1000 is 18%-22% lower than that of the DG1300, comparable to the maintenance cost of the KYB-G pressure transmitter.

III. Recommendations for Matching Typical Operating Conditions

3.1 High-Pressure Applications in the Petrochemical Industry

In 60MPa ultra-high-pressure reactor monitoring, the version of the AST-C1000 equipped with the M20-3m-503 interface performed excellently, with an overload capacity reaching 150%FS. In comparison, although the EDYLBSQ-43 pressure transmitter is lower in price, it experiences zero-point drift under long-term high pressure.

3.2 Cleanliness Requirements in Food and Pharmaceutical Industries

For applications requiring 3A certification, the polished surface treatment and sterile sealing design of the DG1300 offer greater advantages. However, it should be noted that compared with the YM-YM300 pressure transmitter, it has a 0.5s response delay when measuring viscous media.

Summary and Purchasing Guide

Comprehensive test data shows that the AST-C1000 leads in accuracy, high-frequency response, and long-term stability, making it suitable for precision flow control and high-pressure scenarios; the DG1300, on the other hand, has advantages in explosion-proof certification (ATEX/IECEx) and hygienic design. As a professional manufacturer of diffused silicon liquid and gas pressure sensors, Xi'an Shenghongchuang Instrumentation Co., Ltd. recommends that users select models according to operating condition requirements equivalent to the standards of the JX-004 pressure transmitter.

Contact us now to obtain the complete test reports for the AST-C1000 and DG1300-BZ-A-2-210/CJ/GZ pressure transmitters, or inquire about customized solutions such as the MYR-22 pressure transmitter. Our professional technical team will provide you with selection services that comply with ISO9001 standards.