[labnetwork] Seismic Sensors

[Leif Johansen]

Hello Bill, 

That's quite an interesting story indeed.

Denmark has a very low seismic activity, but at present we have a seismograph temporarily installed in the cleanroom to monitor construction works going on right next to the cleanroom building. The only alarms we have had so far are from service engineers trying to hammer cleanroom floor tiles back in place with a tool. 

We are absolute novices in seismic measurements. Are there any general recommendations on where to put a seismic sensor?

Best regards, 

Leif

DTU Danchip 
Technical University of Denmark
 


-----Original Message-----
From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Bill Flounders
Sent: 13. januar 2015 23:15
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] Seismic Sensors

Lab Network,
Many of you have toxic gas monitoring systems.
Many of these systems have an integrated seismic sensor.
The sensor is usually a small box mounted on the wall and located in the basement of your building.

I recall at a previous UGIM meeting a colleague telling me an amusing story of placing a wrench on top of the sensor box, activating the switch, unintentionally activating the toxic gas alarm system and evacuating the entire building. I made a mental note...
but alas, forgot to post a sign on my own sensor.

A visiting campus facility engineer hung a tool bag on our sensor box yesterday.
This test of our laboratory seismic sensor was a rousing success.
There is now a large sign posted adjacent to our seismic sensor box.
Caution    Vibration Sensitive    Do Not Touch   etc   etc
I encourage you to consider the same.
Happy New Year !

Bill Flounders
UC Berkeley Marvell NanoLab




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