Technical Information Pressure transducer with capacitive, ceramic pressure sensor Application Your benefits Pressure transducer for use in the pressure measurement of Dry capacitive ceramic sensor with ultrapure (99.9 %) Al2O3 liquid and gaseous media. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pressure Equipment Directive 2014/68/EU (PED) . . . . . . . . . Other standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . Calibration; unit . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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 UTC30. 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...

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!

Current consumption Sensor connection NOTICE Incorrect polarity can damage the ASIC! ► Ensure polarity is correct. Incorrect analog measured value due to cable break from GND! ► Prevent cable break from GND. Female header strip 2x5 pins (1.27 mm (0.05 in) spacing) • Socket type: SAMTEC SFML-105-02-L-D ■ Insertion force (axial only): max. 40 N

Male pin header strip 2x5 pins (2.54 mm (0.1 in) spacing) Reference air tube for orientation of the pin assignement Application Digital Communication mode selection (UART "GND" or SPI "VDD") SPI clock, must be connected to GND if SPI is not used Positive supply voltage Digital communication output Negative supply voltage Digital communication input, must be connected to GND if not used Analog output Switch output (open drain) Chip select (low active)

Output signal Output Type Signal range and signal on alarm of voltage output 1 Calibrated measuring range 2 Extended measuring range DAC Digital-to-analog converter The signal range and the signal on alarm are based on NAMUR NE 43. 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 case of an error See the S&C CARMEN Manual 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 ^ S 12) ■ Analog output supply voltage: 4.9 to 5.1 V DC ■ Digital output supply voltage: 2.9 to 5.5 VDC Reference accuracy The reference accuracy includes the terminal-based non-linearity, the...

Total Error Band ■ Sensor measuring range: 0.1 to 0.4 bar

Influence of the installation Any installation position is possible but it may cause a zero point shift. Climate class Electromagnetic No specifications (open system) Overvoltage protection 6 V DC (maximum voltage for CARMEN ASIC)

Safety notes For work on and with the device: Static sensitive devices. ► Handle only at static safe work stations! Test standard

Device height The total height is calculated from • the height of the individual process connection. The individual heights of the components can be found in the following sections. To calculate the total height, simply add up the individual heights of the components. You can use the following table for this: Electronics housing Process connections Device height Materials Materials in contact with process

Electronics housing 1) The electronics housing is mounted if the male pin header strip 2x5 pins is selected. The "AA" capsule is used if the process connection KB on the following page is used. The "AB" capsule is used if one of the process connections BA to DC on the following page is used.

Assembly of process connection Please observe the following points when assembling the enclosed process connections: • Before assembly, make sure that the seal and all sealing surfaces are as clean as possible. The sealing surfaces must not be damaged. • Screw the process connection to the sensor assembly, observe a torque of 6 Nm.

Certificates and approvals RoHS The measuring system complies with the substance restrictions of the Restriction on Hazardous Substances Directive 2011/65/EU. Pressure Equipment Directive 2014/68/EU (PED) Pressure equipment with allowable pressure ≤ 200 bar (2900 psi) Pressure equipment (with a maximum allowable pressure PS ≤ 200 bar (2900 psi)) can be classified as pressure accessories in accordance with Pressure Equipment Directive 2014/68/EU. If the maximum allowable pressure is ≤ 200 bar (2900 psi) and the pressurized volume of the pressure equipment is ≤ 0.1 l, the pressure equipment is...