No membranes required for this dissolved oxygen sensor
The new 2610 Optical Dissolved Oxygen Sensor utilizes optical technology to measure dissolved oxygen with high repeatability and accuracy while reducing maintenance and energy costs, says the company. This device eliminates the need for replacement membranes and reference solutions associated with traditional galvanic or polarimetric measurement technologies, and therefore has reduced maintenance costs. The 2610 has an optical cap sensor that is factory calibrated — no field calibration is necessary — and built-in ModBus RS485 and 4–20-mA current-loop outputs. The sensor can be combined with the new 9900 transmitter, and covers the range from 0 to 20 mg/L, 0–200% saturation with accuracies of ±0.1 mg/L (for 0–8 mg/L) or ±0.2 mg/L (for 8–22 mg/L). — GF Piping Systems, Tustin, Calif.