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May 18^th, 2013, 9:09pm

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Water and Wastewater.com Help Forums › Water and Wastewater.com - Laboratory Forum › Water and Wastewater Laboratory Professional Forum › HACH LBOD Probe...

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HACH LBOD Probe... (Read 325 times)

Brianna Junior Member Offline Posts: 55 Washington Company or Organization: WWTP	HACH LBOD Probe... Feb 03^rd, 2011, 6:41pm I've had mine for three years, never any issues... until now... The DO readings are dramatically shifting all of a sudden, from 8.02 to 10.59, and taking longer than 2 minutes to stabilize. Time to replace?
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David S. Senior Member Offline I have nothing clever to say here. Posts: 373 Gender: Company or Organization: Environmental Express	Re: HACH LBOD Probe... Reply #1 - Feb 4^th, 2011, 7:44am The only thing I know about those guys is that you should replace the sensor tip annually. If you haven't done that before, I would say after 3 years it is about that time.
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Brianna Junior Member Offline Posts: 55 Washington Company or Organization: WWTP	Re: HACH LBOD Probe... Reply #2 - Feb 4^th, 2011, 11:17am Yes, the sensor cap is replaced once a year In fact, that's how I usually know that I need a new one, when the DO doesn't stabilize within a minute or less. This time though... I just replaced the cap last week...
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David S. Senior Member Offline I have nothing clever to say here. Posts: 373 Gender: Company or Organization: Environmental Express	Re: HACH LBOD Probe... Reply #3 - Feb 4^th, 2011, 11:35am Check with Hach tech support. They are usually really good about giving good support on their equipment.
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Brianna Junior Member Offline Posts: 55 Washington Company or Organization: WWTP	Re: HACH LBOD Probe... Reply #4 - Feb 14^th, 2011, 12:38pm Update: Talked to Tech Support, ran a software upgrade (downloaded free from HACH site) and things seem to be running well so far...
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