Data centers, telecommunications sites and other critical power users require battery supported standby power.

The optimum Battery Monitoring solution for a typical UPS or telecommunications installation would be a system permanently wired into the battery and capable of measuring both voltage and Ohmic Value EVERY DAY. It should measure voltage multiple times per day to look for UPS, breaker or cabling errors. It should look at Ohmic value daily so you get early warning of impending failure. Both data sets should be stored for later analysis. The ability to signal, externally to the facility management system, that a problem either existed or was impending would also be a key feature of such a system.

Cellwatch fulfills the requirement described above for a reliable, up-to-date fixed Battery Monitoring System with the following key features.

• Measures Voltage on each cell, either 4 or 24 times per day. The software records data for graphical presentation during THAT day as well as average data for historical analysis or trending. Also compares this data continuously with high and low alarm settings for alarm activation.
• Measures Ohmic Value on each cell, either 1 or 2 times per day. The software records data for graphical presentation during THAT day as well as average data for historical analysis or trending. Also compares this data continuously with high and low alarm settings for alarm activation.
• Measures the temperature of either the battery room ambient or a 'pilot' cell. Records this figure for graphing as well as comparison with high and low alarm setting for alarm activation.
• Measures discharge current from a battery string and compares the data with a discharge alarm limit set in software. In the event of a discharge, rapidly records all cell voltage data as the battery discharges for later identification of weak cells under load.
• Supplied with dedicated computer running Windows XP software and CELLWATCH proprietary application for reporting, recording and data analysis.
• The system is modular, so if your needs change, CELLWATCH can be reconfigured or expanded.
• CELLWATCH is a Global product, with manufacturing both in the USA and in Europe.
• Low voltage DC components. Measurement components never see greater than 48v nominal DC so battery connections are all low voltage. Electrical isolation is achieved by plastic fiber optic cable. UL approved !

Cellwatch components

Cellwatch consists of 3 main building blocks. These are:-

• Battery Monitoring Unit (BMU/iBMU). An IBM compatible, industrial 19" server PC, running WindowsXP as well as CELLWATCH proprietary battery monitoring software.
• Control Unit (CU). Interface from the computer's RS485 serial data bus to CELLWATCH's own proprietary fiber optic network. Also provides up to 4 current sensor and 4 temperature sensor inputs as well as 4 volts free alarm outputs.
• Data Collection Module (DCM). A small electronic measurement instrument capable of measuring up to 12 volts DC nominal and 25 milliohm Ohmic Value on each of 4 cell (jar or mono-bloc) inputs. Hence one DCM is required for every set of 4,  2 volt to 12 volt (nominal) measurement point.

Other components of the CELLWATCH system include 1,000 or 2,500 amp current sensing 'clamps', solid state temperature probes and Fiber Optic Network Cable .

CELLWATCH software is included in a system and is written for application in the Windows XP operating system to be easy to use and informative. It has a number of standard graphical reports that provide the right amount of battery data without overwhelming the user and decimating rain forests on the way. The intuitive entry screen shows instantly if something is wrong.

The system is CE qualified in Europe and is certified to meet the requirements of Underwriter's Laboratories standard for safety in the USA and CSA in Canada.

To see photographs of our installations, click here

Learn about CELLWATCH software.

Check out our configuration guide.

Look at installation photographs

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