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190UMC300CBCAA

The Emerson 190UMC300CBCAA is a Rosemount 1151 Series Alphaline® pressure transmitter configured as an Absolute Pressure transmitter. This model is specifically engineered for measuring pressure relative to a perfect vacuum (absolute zero reference), making it ideal for applications requiring pressure measurements independent of atmospheric pressure changes, such as distillation columns, vapor pressure measurement, and vacuum systems.

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Key Parameters & Specifications Model Series: 1151 (Rosemount Alphaline) Type: Absolute Pressure Transmitter Model Designation: 1151AP (Absolute Pressure variant) Pressure Range: 300 (Typically 0-30 to 0-300 psia or equivalent range) Diaphragm Material: C (Hastelloy® C-276 - corrosion-resistant alloy) Fill Fluid: B (Silicone Oil - standard industrial application fill) Process Connection: C (¼-18 NPT on standard centers) Housing Material: A (Epoxy-coated cast aluminum, standard) Electrical Connection: A (½-14 NPT conduit entry with screw terminals) Output Signal: 4-20 mA DC (two-wire) Housing Code: 190U (Specific housing configuration with options) Reference: Sealed vacuum reference inside the sensor Key Features Absolute Pressure Measurement: Measures pressure relative to perfect vacuum (0 psia), eliminating errors from barometric pressure changes Hastelloy C-276 Wetted Parts: Excellent corrosion resistance for aggressive media including acids, caustics, and harsh chemicals Range 300: Suitable for medium-range absolute pressure applications (typically up to 300 psia) Standard Fill Fluid: Silicone oil for general-purpose temperature ranges Standard Process Connection: Compatible with common manifold systems