Delta Controls - Model 551 - Compact Pressure Transmitter Sensor - Datasheet

The Delta Controls Model 551 Pressure Transmitter Sensor includes an oil-filled 316-L Stainless Steel or Hastelloy® C-276 diaphragm that isolates the strain gauge bridge from the process liquid or gas. The back of the sensor is usually vented to atmosphere to compensate for barometric pressure changes. The 551 has the entire electronics assembly epoxy sealed into the body. The advantage is the smaller size.