[ANSS-netops] ANSS-netops Digest, Vol 38, Issue 5

[Greg Steiner]

Just got back from the field. VLF designs manufactures several  
customizable battery management systems. all the specs schematics and 
operating information and a price list can be found at www.dropbox.com. 
log on to vlf at cablerocket.com the password is vlf designs. the unit was 
designed specificaly for powering seimic systems. the bc-12b has two 
sets of inputs which can be a dc 15-18 volt power supply,and a solar 
panel up to 120 watts. alternately a second solar panel can be connected 
where the power supply would normally be connected. the unit has a 
temperature compensated hybrid switching type regulator in its battery 
charge system to minimize heat generation, followed by a post regulator 
to remove any spikes from the switching regulator or limit load voltage 
during low temperature charging.  The linear post regulator is followed 
by 2 low voltage disconnects that are set to shed loads at different 
battery voltages in order to maximize critical load longevity. all 
thresholds are user adjustable and further customization is also 
possible at no cost. VLF designs has built custom hardware for 30 years, 
specifically designed to solve problems for network operators. We also 
build custom low noise transient suppression hardware and analog 
telemetry system hardware. if you have any questions contact me at 
vlf at cablerocket.com.

On 5/25/2012 7:00 AM, anss-netops-request at geohazards.usgs.gov wrote:
> Send ANSS-netops mailing list submissions to
> 	anss-netops at geohazards.usgs.gov
>
> To subscribe or unsubscribe via the World Wide Web, visit
> 	https://geohazards.usgs.gov/mailman/listinfo/anss-netops
> or, via email, send a message with subject or body 'help' to
> 	anss-netops-request at geohazards.usgs.gov
>
> You can reach the person managing the list at
> 	anss-netops-owner at geohazards.usgs.gov
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of ANSS-netops digest..."
>
>
> Today's Topics:
>
>     1. Re: PASSCAL Developed Power Management Module (Charge
>        Conroller and Power Switcher) (David S. Croker)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 24 May 2012 15:17:18 -0700
> From: "David S. Croker"<croker at usgs.gov>
> To: Kyle Persefield
> 	<kpersefield at usgs.gov>,anss-netops at geohazards.usgs.gov
> Cc: ggyure at usgs.gov
> Subject: Re: [ANSS-netops] PASSCAL Developed Power Management Module
> 	(Charge Conroller and Power Switcher)
> Message-ID:<OF9FFE9CA4.EC04A836-ON88257A08.007A717F at usgs.gov>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> Kyle,
>
> Thanks for sharing.  We haven't moved to MPPT charge controllers yet
> just due to the costs.  It's still hard to find a good one in the
> $200-300 range, but even then that's quite a bit cheaper than what
> Betatron is charging for all the extra packaging.  At that price I
> don't see us moving that direction at this time, but thanks again for
> sharing.  It's a nice looking unit, though.  I'll stick with my $50
> Sunsaver with LVD for now, although I can definitely see the
> advantages of MPPT for some of my extreme-weather sites.
>
> Dave
>
> At 01:50 PM 5/21/2012, Kyle Persefield wrote:
>> All,
>>
>> Would anyone be interested in using the PASSCAL developed Power
>> Management Module (PMM).  This solar charge controller and power
>> switcher box for a 12 VDC system are in wide spread use with
>> PASSCAL.  I believe they have about 1000 of them deployed and we are
>> considering buying some for our various projects.
>>
>> The GenaSun MPPT Charge Controller appears to be robust and the
>> temperature specs are great.  The battery low voltage disconnect for
>> the batteries is a big plus. PASSCAL has packaged everything into a
>> NEMA 4 box and it is very water resistant.
>>
>> The boxes are assembled right here in Albuquerque by Betatron for
>> PASSCAL.  They run in the $600-700 range depending on order size.
>>
>> See the attached.
>>
>> For a sure response send E-Mail to gsnmaint at usgs.gov, or
>> gsn-xxxx(your station code)@usgs.gov
>>
>> Regards,
>>
>> Kyle E. Persefield
>> Honeywell Int'l HTSI, Field Engineer
>> USGS Albuquerque Seismological Laboratory Contractor
>>
>> Observatory "Trouble" Hotline Telephone: 505-846-5646
>> Tel:   505-846-7597
>> Fax:  505-846-6973
>> http://earthquake.usgs.gov/regional/asl/
>>
>> Mailing Address:
>> U S Geological Survey
>> Albuquerque Seismological Laboratory
>> P O Box 82010
>> Albuquerque, NM 87198-2010
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> ANSS-netops mailing list
>> ANSS-netops at geohazards.usgs.gov
>> https://geohazards.usgs.gov/mailman/listinfo/anss-netops
>
>
> ------------------------------
>
> _______________________________________________
> ANSS-netops mailing list
> ANSS-netops at geohazards.usgs.gov
> https://geohazards.usgs.gov/mailman/listinfo/anss-netops
>
>
> End of ANSS-netops Digest, Vol 38, Issue 5
> ******************************************
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://geohazards.usgs.gov/pipermail/anss-netops/attachments/20120525/44ee68c0/attachment.html>