V 4.2 Gen 2 Revised 3/20 Dissolved Oxygen Probe Reads Dissolved Oxygen Range 0 − 100 mg/L +/– 0.05 mg/L Accuracy ~0.
Measurements Cable Length 1m (3.2’) Ø 2.6mm 26mm (1”) Ø 8mm Included with probe 35mm (1.3”) 27.5mm (1”) 57mm (2.2”) 99.5mm (3.9”) Ø 12mm (0.47”) 30ml Dissolved Oxygen Electrolyte Solution 7.5mm (0.3”) 16.4mm (0.
Specifications Max depth Cable length Weight Speed of response Dimensions SMA connector Membrane type Sterilization Food safe Included with probe 343 meters (1,125 ft) 1 meter 52 grams ~0.3 mg/L/per sec 16.5mm x 124mm (0.5" x 4.9") Male PTFE Chemical only Yes SMA to BNC adapter Materials EPDM Nylon PVC Polyethylene Polycarbonate Gold This Dissolved Oxygen probe can be fully submerged in fresh or salt water, up to the SMA connector indefinitely.
NSF/ANSI 51 Compliant Atlas Scientific LLC, hereby certifies that, Dissolved Oxygen Probe Part # ENV-40-DO Complies with NSF/ANSI Standard 51 PVC EPDM Polyethylene Nylon Gold PVC NSF-51 Compliant Gold NSF-51 Compliant Ultem Polycarbonate NSF-51 Compliant Nylon NSF-51 Compliant EPDM NSF-51 Compliant Polyethylene NSF-51 Compliant Polycarbonate NSF-51 Compliant 4 Copyright © Atlas Scientific LLC Ultem
Disassembly instructions The Atlas Scientific dissolved oxygen probe comes apart in two different ways. Unscrew Unscrewing the enitre cap off of the dissolved oxygen probe allows you to add or replace electrolyte solution into the probe. See pg. 6 for more information. Pull apart Inner cap Outer cap Pulling the outer cap apart from the inner cap allows you to replace the PTFE sensing membrane. See pg. 7 for more information.
Attention! This probe will not work until you add electrolyte solution.
Membrane replacement Over time, the membrane can dry out or tear, this will lead to irregular readings from the probe. To correct this issue, the probes membrane must be replaced.
Operating principle A galvanic dissolved oxygen probe consists of a PTFE membrane, an anode bathed in an electrolyte and a cathode. Oxygen molecules defuse through the probes membrane at a constant rate (without the membrane the reaction happens to quickly). Once the oxygen molecules have crossed the membrane they are reduced at the cathode and a small voltage is produced. If no oxygen molecules are present, the probe will output 0 mV. As the oxygen increases so does the mV output from the probe.
This galvanic dissolved oxygen probe is a passive device that generates a small voltage from 0mv – 60+ mv depending on the oxygen saturation of the PTFE sensing membrane. This voltage can easily be read by a multimeter or an analog to digital converter. 0 0 0 0 V V How often do you need to recalibrate a Dissolved Oxygen probe? Because every use case is different, there is no set schedule for recalibration.
Extending the probe cable length You can extend the cable to greater than 100 meters with no loss of signal. Atlas Scientific has tested up to 300 meters without a problem, however you run the risk of turning your D.O. probe into an antennae, picking up noise along the length of your cable. If you want to extend your cable, we recommend that you use proper isolation, such as the Basic EZO TM Inline Voltage Isolator, or Tentacle Shield. Be sure to calibrate your probe with the extended cable.
Probe cleaning Over time dissolved oxygen probes can become dirty and covered in chemical deposits. Soft coatings can be removed by lightly brushing around the sides of the probe and membrane cap. If the probes membrane is in need of cleaning, use a mild bleach mixture to gently wash away any deposits. DO NOT USE A BRUSH TO CLEAN THE MEMBRANE If the probes membrane is ripped it must be replaced, as it will cause irregular readings.
