This is the HTML version of Blue Sea Systems eNewsletter Circuit Solutions™. If you are having trouble viewing this newsletter, please view it online.
In this issue:
• Technical Brief
Automatic Charging Relays (ACR) Explained
• Application Brief
Monitor Bilge Functions With the VSM 422

Product notices are posted on Blue Sea Systems Home page

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Previous issues of


Issue 54
(Feb. 11, 2009)

Press Release:
Vessel Systems Monitor VSM 422 Included in West Marine’s Top 6 Innovative Products for 2009

Product Announcement:
Blue Sea Systems Now Offering Custom Panel Labels

Technical Brief:
Questions to Consider When Choosing a Tank Monitor



Issue 53
(Jan. 20, 2009)

Press Release:
Blue Sea Systems Ultrasonic Tank Senders for use with the Vessel Systems Monitor VSM 422

Application Brief:
Selecting a Battery Type When Setting up the Vessel Systems Monitor VSM 422

Technical Brief:
Battery State of Charge—What is it, and how is it measured?



For a list of past Circuit Solutions™ issues, click here.
Technical Brief
- Non-product-specific technical information for improving safety, reliability, and usefulness of marine electrical systems

Automatic Charging Relays (ACRs) Explained

Blue Sea Systems Automatic Charging Relays (ACRs) Explained

What is an Automatic Charging Relay (ACR)?
An ACR parallels (combines) batteries during charging and isolates them when charging has stopped and after battery voltage has fallen. An ACR is intended to keep a load from discharging both of the batteries.

Click here to read more.
Application Brief
- Improving marine electrical systems with Blue Sea Systems products

Monitor Bilge Functions with the VSM 422

Monitor Bilge Functions With the Versatile VSM 422

Most boats have either no bilge pump monitoring or merely an indication that the pump is running. This is not enough to detect a leak that could lead to a disastrous sinking. The VSM 422 not only indicates that the pump is running, but also presents how many minutes out of the hour it has run, how often it has run in the last 24-hours, and how often it has run since the counter was last reset.

Click here to read more.
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Copyright ©2009 Blue Sea Systems, Inc.
425 Sequoia Drive, Bellingham, WA 98226 USA
Phone: 360-738-8230
Fax: 360-734-4195
Website: www.bluesea.com