The Keller low cost series 21 Y pressure transmitters can be used to measure up to 1000 bar at temperatures from -20 to 100°C in industrial applications, even if they are in the immediate proximity of frequency converters.
In the design of the range, particular attention was paid to providing low-cost calibration that guarantees a maximum total error band of 1,5 %FS over the standard temperature range. Keeping this error small is achieved using an integrated temperature sensor and digital circuit. The zero point and amplification are calculated and programmed, and during operation fed into the analogue signal path for compensation.
The transmitters are also characterised by extreme resistance to electromagnetic fields and are immune to external voltages between the housing and the electrical connection up to 300 V.
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