<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif;"><div>If anyone has some data examples of this problem, please send the data to me so I can follow up.</div><div>Thanks,</div><div>Jamie</div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> ANSS-netops <<a href="mailto:anss-netops-bounces@geohazards.usgs.gov">anss-netops-bounces@geohazards.usgs.gov</a>> on behalf of Jim Smith <<a href="mailto:jimsmith@usgs.gov">jimsmith@usgs.gov</a>><br><span style="font-weight:bold">Date: </span> Thursday, April 25, 2019 at 10:51 AM<br><span style="font-weight:bold">To: </span> <<a href="mailto:anss-netops@geohazards.usgs.gov">anss-netops@geohazards.usgs.gov</a>><br><span style="font-weight:bold">Subject: </span> [ANSS-netops] potential ETNA2 issue<br></div><div><br></div><div dir="ltr">Hello ANSS group,<div><br></div><div>I have experienced "buzzing" issues with the ETNA2, and found out CGS encountered a similar problem. Just wondering if anyone else has had this issue with the units. Here is a response given by KMI support to CGS regarding the matter: </div><div><br></div><div>" <span style="font-family:Arial,sans-serif">Listening to the video and the fact that putting a finger on the unit suggests that at least one of the EpiSensor components is oscillating. We had one report of this but were unable to duplicate the problem with the unit as returned which functioned normally even after over-torquing the hold-down nut. Do we know if this unit was torques with a torque wrench or by hand? I'm not sure who at KMI said it couldn't be the bolt pressure but certainly if sufficient torque is exerted the case can be deformed which could result in the sensors going into oscillation. Hence, the essential question is was this over-torqued or are some units susceptible to this at our suggested torque.</span> " </div><div>r/Jim</div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><br></div><div><br></div>Jim Smith<div><div>USGS-ESC</div><div>345 Middlefield Rd. MS 977</div><div>Menlo Park, CA 94025</div><div>(650) 329-4770 (office)</div><div>(650) 229-4673 (cell)</div><div><br></div><div><br></div></div></div></div></div></div></div></div></div></div>
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