1 2 3 4 5 6 7 8 HI7041 Electrolyte Solution It is crucial to the performance of your DO probe to keep the sensor active with regular maintenance. For this purpose, Hanna has developed HI7041 electrolyte solution to rell the membrane cap. HI7041S refilling electrolyte solution (30 mL) HI7041M refilling electrolyte solution (250 mL) HI7041L refilling electrolyte solution (500 mL) 78.6 mm 87 mm À25.2 mm À16 mm À21 mm HI76407A/P Easy, Screw Cap DO Membranes Have PTFE DO replacement caps available when DO measurements become sluggish or for routine maintenance. HI76407A/P contains 5 ready-to-use, replacement membranes. Probe Cable Length Recommended Meter HI76407/2 2 m (6.6’) HI9142 HI76407/4 4 m (13’) HI76407/10 10 m (33’) HI76407/20 20 m (66’) HI76407 Standard DO Probe The HI76407 is a standard Clark-type polarographic dissolved oxygen probe for Hanna’s benchtop and portable dissolved oxygen meters. The probe is constructed of durable ABS plastic and contains an integrated temperature sensor for temperature compensated measurements. It is compatible with our HI76407A/P PTFE membrane caps. Each membrane separates the probe’s platinum cathode and silver anode from the water sample being measured. Oxygen diuses across the membrane and interacts with the polarographic system to produce a current proportional to oxygen concentration. Each cap is easily lled with HI7041 electrolyte and screwed onto the probe. The probe’s tapered design makes it ideal for BOD measurements. 1 Shielded, waterproof cable 2 Protective sleeve 3 PEI probe for best eld protection 4 Linearized and accurate thermistor temperature sensor protected behind a stainless steel cover 5 Silver wire anode element 6 Glass encapsulated platinum cathode 7 Screw cap membrane that holds potassium chloride electrolyte solution (HI7041S) 8 Thin, permeable PTFE membrane isolates the sensor elements from the testing solution, but allows oxygen to enter (HI76407A/P) 6 Dissolved Oxygen 6.38 | www.hannainst.com probes and solutions
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