Pressure Transmitters Series 23 SY / 25 Y


Catalog excerpts

Pressure Transmitters Series 23 SY / 25 Y - 1

Piezoresistive Pressure Transmitters Series 23 SY / 25 Yabsolute and gauge pressure / accuracy 0,25 %fs The Y-line transmitters have an extremely small temperature error. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields that are 1,5 Kelvin (K) wide. The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the analogue signal path depending on the temperature. Each temperature is the calibration temperature” for this transmitter. The accuracy thereof is mainly determined by linearity. 120 fields are available, representing a possible temperature range of 180 K. The wider the temperature range, the greater the amount of testing that is needed to minimise the inaccuracy of the mathematical model. The Series 23 SY / 25 Y product line is outstanding due to its extreme ruggedness towards electromagnetic fields. The limits of the CE standard are undercut by a factor of up to 10 with conducted and radiated fields. Fully welded (no internal seals) Ranges 0,5.1000 bar Flush, fully welded. A Comprehensive Range Absolute, barometric, gauge (positive and negative pressures). Many nominal pressure ranges. Current or voltage output. Flexibility A modular concept is used, with fast and economical production achieved by using off-the-shelf sensors. Numerous options and variations are available to meet customers' specific requirements: Pressure ranges, pressure ports, signal outputs, electrical connectors, etc. KELLER Ges. fur Druckmesstechnik DE-79798 Jestetten +49 7745 9214 0 E Edition 06/2017 Subject to alterations Companies approved to ISO 9001 fa*

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Pressure Transmitters Series 23 SY / 25 Y - 2

Specifications Pressure Ranges (FS) in bar PR: Vented Gauge. Zero at atmospheric pressure PA: Sealed Gauge. Zero at 1000 mbar abs. PAA: Absolute. Zero at vacuum *for 25 Y: up to 600 bar 11 Linearity (best straight line) + Hysteresis + Repeatability 2) Accuracy + Temperature Coefficient + Zero + Span Tolerance 3) Pressure Range 0,1 bar: Linearity ±1 %FS Max; 0,5...4,5 V output not available; 4...20 mA / 0...5 V / 0...10 V outputs only. 4) Measuring range 1000 bar only suited for static applications Storage-/Operating Temperature Long Term Stability Range > 2 bar Range < 2 bar Type...

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