Technical Information Capacitive, ceramic pressure sensor Application Pressure sensor for use in the pressure measurement of liquid and gaseous media. Your benefits Dry capacitive ceramic sensor with ultrapure (99.9 %) Al2O3 ceramic ■ High overload resistance ■ Very good long-term stability ■ High corrosion resistance ■ Digital/analog signal output (SPI, UART, U) ■ Small physical size ■ Measuring ranges from 0 to 0.1 bar (0 to 1.5 psi) to 0 to 100 bar (0 to 1500 psi) ■ Optional temperature output, switch output People for Process Automation

Table of contents About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Document function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RoHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Other standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 16 Calibration; unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Function and system design . . ....

About this document Document function This document contains all the technical data for the device and provides an overview of the device versions and accessories that can be ordered. Symbols used Safety symbols

Function and system design Measuring principle A capacitive ceramic sensor element is at the core of the USC30. The basic material is (Al2O3), an ultrapure (99.9 %) aluminum oxide ceramic that is highly resistant to many aggressive gases and liquids. Two cylindrical ceramic components (process isolating diaphragm and ceramic substrate) are hermetically sealed together. In the case of absolute pressure sensors, the reference vacuum of 3.0 x 10-6 mbar that is generated in the production process between the process isolating diaphragm and the ceramic substrate becomes permanent, thereby enabling...

The Ceracore USC30 is a pressure sensor used for pressure and level measurement. Integration into an overall system The Ceracore USC30 is a component. Installation and commissioning in an overall system must be carried out in accordance with the technical regulations and by qualified specialist personnel. Incorrect use The manufacturer is not liable for damage caused by improper or non-intended use. Clarification for borderline cases For special process media and fluids for cleaning: Endress+Hauser is glad to provide assistance in verifying the corrosion resistance of fluid-wetted materials,...

Measured process variable ■ Gauge pressure or absolute pressure Measuring range The maximum pressure for the measuring device depends on the lowest-rated element with regard to pressure. ► The measuring device must be operated only within the specified limits!

Power supply Type Supply voltageCurrent consumption < 1.6 mASensor connectionNOTICEIncorrect polarity can damage the ASIC! ► Ensure polarity is correct. • Socket type: SAMTEC SFML-105-02-L-D ■ Insertion force (axial only): max. 40 N ► The SAMTEC plug is fixed to the socket using the locking mechanism. To avoid damage, the plug should not be disconnected again.

Signal range and signal on alarm of voltage output 2) Temperature signal when ordering the additional output, Temperature oC (on chip) in °C Calibrated measuring range Extended measuring range The error value of the signal on alarm can be configured and is displayed in the illustration for the example > 95 % VDD (CARMEN standard sensor setting). Behavior in the event of an See the S&C CARMEN Manual error Dead time, time constant Presentation of the dead time and the time constant:

Dynamic behavior

Reference operating conditions • Ambient temperature TA = constant, in range: +23 to +27 °C (+73 to +81 °F) • Relative humidity 9 = constant, in range: 5 to 80 % RH. • Ambient pressure pA = constant, in range: 860 to 1 060 mbar (12.47 to 15.37 psi) • Position of measuring cell = constant, in range: process isolating diaphragm pointing downwards (see also the "Influence of installation position" section ^ H 13) • Voltage output supply voltage: 4.9 to 5.1V DC • Digital output supply voltage: 2.9 to 5.5 V DC • Reference installation of Endress+Hauser (Components and Mounting instructions SD02471P)...

Total Error Band • Sensor measuring range: 0.1 to 0.4 bar (1.5 to 6 psi) • Process temperature: –40 to +125 °C (–40 to +257 °F) 1.5 0.6 Error in % of the calibrated span Temperature in °C typical value Error in % of the calibrated span Temperature range Typical value Maximum value

Total Error Band • Sensor measuring range: 1 to 100 bar (15 to 1500 psi) - maximum value ----- typical value Display for TD 1:1

Installation Influence of the installation Any installation position is possible but it may cause a zero point shift. Installation conditions ■ During installation, electrical connection and operation, no moisture may penetrate the device. ■ The back of the sensor element must not be encapsulated. Handling sensors with reference air tube (optional) ► Handle with care. ► Do not bend, shear or pull reference air tube. Safety notes For work on and with the device: Static sensitive devices. ► Handle only at static safe work stations!

Process and environment Process and ambient -40 to +125 °C (-40 to +257 °F) temperature range Compensated range -20 to +80 °C (-4 to +176 °F) Storage temperature range -40 to +125 °C (-40 to +257 °F) Electromagnetic No specifications (open system) Overvoltage protection 6 V DC (maximum voltage for CARMEN ASIC)

Mechanical constructionDevice dimensions 211066831B_EN The reference air tube is optionally available for sensors for relative pressure measurement. 1) The US Food & Drug Administration (FDA) has no objections to the use of ceramics made of aluminum oxide as a surface material in contact with foodstuffs. This declaration is based on the FDA certificates of our ceramic suppliers.