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INSTROTECH, the native consultant of Keller, gives a stress transmitter for temperature compensation and safety from electromagnetic fields (EMC) within the just lately authorized 21Y Sequence. With measuring ranges between 2 bar and 1000 bar, the 21Y Sequence transmitters can be utilized at temperatures starting from -20 °C to +100 °C in any industrial utility, even within the instant proximity of frequency converters.
Specific consideration has been paid to offering low-cost calibration that ensures a most Complete Error Band of ±1.5 %FS over your entire commonplace temperature vary of -10 °C to +80 °C.
Intensive knowledge assortment, comparable to that required by polynomial correction schemes, is changed by a extra simple, cost-effective technique. The temperature vary is split into as many as 120 subdivisions, of 1.5 Kelvin every, by an built-in temperature sensor and a further digital circuit. The compensation values for TK zero level and TK amplification for every of those subdivisions are calculated individually following a mathematical mannequin and saved within the transmitter. These values are fed into the analogue sign path throughout operation, relying on the temperature, with out lowering the two kHz bandwidth.
Keller 21Y Sequence transmitters are additionally characterised by being extraordinarily immune to electromagnetic fields. The verified values for carried out and radiated fields are considerably beneath the boundaries of the CE commonplace. These transmitters are additionally proof against exterior voltages between the housing and {the electrical} connection of as much as 300 V.
The scope of the vertical vary of manufacture, the modular design, and the programmable electronics imply that large-scale, customer-specific batches will be simply accommodated. Keller manufactures and shares giant portions of stress transducer measuring cells. They’re then welded into the transmitter head with the required stress connection, geared up with electronics, and individually calibrated over your entire temperature and stress vary in giant, purpose-built take a look at programs.
2-wire (4 to twenty mA) and 3-wire (VDC) output sign variations can be found, and an in depth choice of stress and electrical connections will be provided as commonplace.
Keller 21Y Specs:
Accuracy: + 0,5percentFS
Complete error band :1,5percentFS @ -10…80°C
Strain vary: 0…2,5 to 0…1000 bar
Contact INSTROTECH for extra info on Keller’s 21Y Interference-resistant stress transmitters on 010 595 1831, gross sales@instrotech.co.za or www.instrotech.co.za
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