In the field of high-temperature liquid level measurement, YM-GLYW and YM-RGYW high-temperature pressure-guided level transmitters have attracted much attention for their outstanding performance. This article will provide a professional comparison from the dimensions of measurement accuracy, temperature resistance range, and structural design, helping technical evaluators choose the most suitable stainless steel cable-cylinder type level sensor solution according to specific working conditions.

I. Product Definition and Core Technology Comparison

YM-GLYW and YM-RGYW both belong to the series of high-temperature pressure-guided level transmitters, featuring a 316L stainless steel cable-cylinder structure specially designed for high-temperature and high-pressure environments such as boilers and reaction kettles. Both have passed ISO9001 certification, but YM-RGYW additionally has SIL2 functional safety certification, making it suitable for scenarios such as chemical and power industries with higher safety level requirements. In terms of measurement principle, YM-GLYW adopts traditional piezoresistive sensing technology, while YM-RGYW is upgraded to a digital ceramic capacitive sensor, enabling it to maintain an accuracy advantage of ±0.2%FS even under 800℃ working conditions.

II. Comparative Analysis of Key Performance Parameters

It is worth noting that YM-RGYW adopts a split-structure design, physically isolating the signal processing module from the sensing unit, effectively preventing damage to electronic components caused by high-temperature environments. Meanwhile, the domestic displacement sensor SL differential drawbar linear displacement sensor spring-return inductive sensor also demonstrates excellent stability under -20℃~120℃ working conditions, and its differential transformer principle forms a technical complement to level transmitters.

III. Selection Guide for Typical Application Scenarios

For steam drum water level monitoring in thermal power plants, it is recommended to select YM-RGYW to handle saturated steam environments above 550℃; whereas in atmospheric and vacuum distillation units in the petrochemical industry, YM-GLYW offers better cost advantages under working conditions below 400℃. When strong corrosive media are involved, both products can be equipped with Hastelloy diaphragms, but YM-RGYW's ceramic sensing technology offers better resistance to special media such as hydrofluoric acid. In scenarios requiring synchronous monitoring of mechanical displacement, it can be used together with SL series displacement sensors to achieve multi-dimensional data acquisition.

IV. Five Key Factors in Procurement Decision-Making

1. Temperature threshold: 600℃ is the dividing point, and if it exceeds this, YM-RGYW must be selected
2. Accuracy requirement: for nuclear-grade applications, a 0.2%FS high-accuracy configuration is recommended
3. Medium characteristics: for strong corrosion conditions, diaphragm material compatibility needs to be evaluated
4. Safety certification: hazardous areas require SIL2 or above certification
5. Life cycle cost: although the unit price of YM-RGYW is 20% higher, the maintenance cycle is extended by 50%

V. Why Choose Shenghongchuang Instruments

As a national high-tech enterprise in Xixian New Area, we have 15 years of experience in R&D of high-temperature sensors, and all products undergo a 72-hour aging test before leaving the factory. For special working conditions, we can provide integrated solutions of YM-GLYW/YM-RGYW and domestic displacement sensor SL differential drawbar linear displacement sensor spring-return inductive sensor, enabling synchronous monitoring of multiple parameters including temperature-level-displacement. Our technical team can assist with the full-process service of selection calculation, installation guidance, and after-sales calibration.