Product Overview
Setra's Model 227 transducer is designed for high density, modular block gas sticks and panels required for today’s 300 mm tools. The Model 227s 1-1/8’’ footprint optimizes valuable space, and its rugged design makes it ideal for pressure measurements that require long-term stability, high accuracy and exceptional insensitivity to environmental extremes.
不像许多其他设计有大的死腔体积，227有一个小扫掠传感器室，易于清洗。所有潮湿的部分是316L VIM/VAR不锈钢钝化到5 Ra (7 Ra。最大)光洁度，消除了表面不规则性，并提供适当的表面化学物质，以耐腐蚀，确保无污染的气体分布。
Available with 5 VDC, 10 VDC, or 4 to 20 mA ouput, the Model 227 offers ±0.25% Full Scale or ±1.0% of Reading accuracy. The Model 227 comes with a space-saving1-1/8” C-Seal or W-Seal downmount interfacing base with choice of a multi-conductor cable, 4-pin bayonet connector, and 9 or 15 pin D-sub connector for electrical termination. When coupled with the Model 327 1–1/8’’ rotatable display, this package provides the ultimate in pressure measurement and display. Side access to the zero and span adjustments beneath the rotating protective cover, and choice of absolute, gauge or compound pressure ranges complete this unique design.
Principle of Operation
Setra的专利可变电容传感器采用316L不锈钢膜片和绝缘极板。在传感体和极板之间形成可变电容器。压力的增加会引起膜片轻微的圆角，从而降低电容。通过Setra独特的定制集成电路，利用专利的电荷平衡原理，检测电容变化并将其转换为高精度的线性直流电信号。Setra的整个超高纯度系列是基于Setra经过验证的电容感测技术，具有高度准确和稳定的电压或电流输出信号，几乎是EMI/RFI免疫。
WARNING:This product can expose you to chemicals including Lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm (For more information go towww.p65warnings.ca.gov)
NOTICE:Lead is encapsulated in the sensor glass housed inside the product.
