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Alpha 190 & 200 PH ORP TDS COND

  • Easy push-button calibration with USA/NIST buffer recognition for fast, effortless calibration. Controller freezes data transmission and relay activities during calibration and maintenance
  • Symmetrical mode of operation for clear, uninterrupted readings even in electronically noisy environments
  • Two SPDT relays with independent hysteresis ? effective high/low set-points limit control with minimal relay-chattering
  • Choice of automatic or manual temperature compensation. Three-wire system compensates error due to cable resistance
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