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Part#: 65799
Weight: 1.5 lbs

Endress+Hauser Memosens Digital Optical DO Sensor, with G1 & 3/4"NPT connections and 23'L Cable, COS61D-AAA1A3

  • Plug-and-play operation—automatically recognized by Endress+Hauser digital Memosens controllers
  • Monitor DO in 0 to 20 ppm (mg/L) or 0 to 200% saturation
  • Digital interference-free signal—perfect for use in harsh environments
Price: $2,453.07
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Need Help? Call 800-548-1234

Oxymax COS61D Memosens digital sensors convert measured values to a digital interference-free signal compatible with any Endress+Hauser Memosens controller. Optical DO technology offers an extra-wide measurement range, and is immune to contaminants like H2S. Since no flow is required, you can even take measurements in still water. Sensor measures 9.06"L x 1.57"Dia with a 23"L cable (cables up to 330'L are available; contact USABlueBook for more information).

Memosens sensors store all calibration data, plus other key diagnostic values. Optical signals are continuously monitored and analyzed. When sensors require routine maintenance, they trigger a warning signal and later an error message on the controller. Rugged stainless steel construction ensures long life with minimal maintenance. Sensor cap is easy to replace—no fill solution or tiny membranes required. Cap can last over 2 years in ideal operating conditions.

Important Ordering Information: Complete mounting installations consist of an immersion pipe assembly and rail-mount hardware. Immersion pipe assemblies are available in two styles: Direct Immersion G1(F) (stock # 64145) or 3/4"NPT(F) (stock # 64163) connections or float ball attachment (64177) to keep sensor submerged below layers of foam and grease. Rail-mount hardware with pendulum holder (stock # 64203) attaches either assembly to a hand rail, and allows you to swing the sensor in and out of position.

Note: Additional options are available, including inline flow-through cells and compressed air sensor end attachments for automatic sensor cleaning. Contact USABlueBook for more information.

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Tech Specs
  • Range/Accuracy: 0 to 20 ppm (mg/L); 0 to 200% saturation / ±0.01 mg/L or ±1% below 12 mg/L; ±2% from 12 to 20 mg/L
  • Repeatability: ±0.5% of measuring range end
  • Process pressure: 145 psi max, absolute
  • Wetted materials: SS sensor shaft, POM cap, silicone fluorescence layer
  • Temp. compensation: automatic, 20 to 140°F (-5 to 60°C)


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