Smart sensor electronics improve pH/ORP monitoring
GF Piping Systems
The Signet 2751 DryLoc pH/ORP (oxidation-reduction potential) Smart Sensor Electronics (photo) provide pH/ORP monitoring and control by alerting users to probe health, including needed maintenance, glass impedance or probe failure (via, for instance, broken-glass detection). The device is suitable for use in water and wastewater treatment, scrubber control, effluent monitoring, flocculent coagulation, surface finishing and other applications. The 2751 features two different outputs — a two-wire 4–20-mA loop output with optional EasyCal functionality, or a digital (S 3 L) output, which allows for longer cable lengths and is compatible with the Signet 9900 Transmitter (Gen IV), 9950 Dual Channel Transmitter or Signet 0486 Profibus Concentrator, the 2751 virtually eliminates inaccurate pH/ORP readings by automatically monitoring electrode condition and generating an alert to potential problems before they become more serious. The SmartSensor Electronics allow for easy calibration of electrodes in a laboratory setting, as well as installation of precalibrated probes in the field, thereby reducing system downtime, says the company. Memory-chip-enabled electrodes will store operational data, such as minimum and maximum pH/mV readings, runtime, minimum and maximum temperature, for troubleshooting and operational evaluation. The device provides pH measurement from –1 to 15, and ORP measurements from –1,999 to 1,900 mV. The 2751 is available in three package styles (one submersible and two inline versions). — GF Piping Systems, Irvine, Calif.