Series 26 Y


Catalog excerpts

Series 26 Y - 1

Piezoresistive Low-Cost Level Transmitter Series 26 Yabsolute and relative pressure / accuracy 0,25 %fs The pressure transmitters Series 26 Y are used in water level measurements that are price-sensitive but still require considerable accuracy. Technology Y-series transmitters have an extremely small temperature error. This is achieved by means of digital compensation of an all-analogue signal path. The gain and the zero point of the gain circuit can be influenced by digital/analogue converters. These receive their numerical values from an EEPROM that is addressed depending on the temperature. A mathematical model for TC zero and TC gain with any order can therefore be determined in the calibration process and stored in the transmitter with a resolution of 1,5 K. The accuracy of the end product therefore essentially depends on the amount of testing and the linearity of the measuring cell. With the Series 26 Y, the monocrystalline silicon measuring cell is reliably protected from the measuring medium by a stainless steel diaphragm. The steel diaphragm itself is protected from mechanical influence by a plastic cap, and has outstanding performance features with regard to accuracy and stability due to its large diameter of 17 mm. Performance Features - Extremely accurate, excellent long-term stability, no pressure hysteresis - Integrated overvoltage and polarity reversal protection - Protection class: IP68 - Compact, robust housing made from stainless steel - Pressure ranges of 100 mbar to 10 bar (corresponds to water column of 1 m to 100 m) - Low-Cost Analogue Interfaces Because of the all-analogue signal path, a large bandwidth of 2 kHz can be achieved without a time lag. With a start-up time of just 5 ms, the Y-series is excellent for data logging applications. - Current output: 4...20 mA (2-wire technology) - Voltage output: 0.10 V, 0,5...4,5 V, etc. (non-ratiometric) Electrical Connections KELLER Ges. fur Druckmesstechnik DE-79798 Jestetten +49 7745 9214 0 E3 Edition 05/2018 Subject to alterations Companies approved to ISO 9001 taf

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Series 26 Y - 2

Pressure Ranges (FS) in bar (all intermediate ranges possible) Water column in meter, ca. 1 2 5 10 20 50 100 PR: Vented Gauge. Zero at atmospheric pressure PAA: Absolute. Zero at vacuum 1) Linearity (best fitted straight line) + hysteresis + repeatability 2) Accuracy + Temperature Coefficient + Zero + Span Tolerance 3) Pressure range 0,1 bar: Linearity ±1% FS Max; Signal output limited to 4.20 mA / 0.5 V / 0.10 V Storage-/Operating Temperature Type Signal Output Signal Output Limitation Supply Load Resistance Limit Frequency Power Consumption Electrical Connection...

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