The optimum Battery Monitoring solution for a modern UPS installation would be a monitoring system permanently cabled into a UPS or telecommunications battery, capable of measuring both voltage and internal resistance on a regular basis and storing that data for later analysis. The ability to signal, externally to the battery facility, 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 6 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 Internal Resistance on each cell, either 2 or 4 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 98/ME/2000 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.
Cellwatch consists of 3 main building blocks. These are:-
(BMU/iBMU). Either; an IBM commercial grade notebook computer with its own battery back up, running Windows98/XP as well as CELLWATCH proprietary battery monitoring software. This is mounted behind glass, in a secure locked steel cabinet to avoid tampering, or an industrial PC mounted in a 19" rack mounted cabinet for remote access and notification.
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 39 milli-ohm internal resistance 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.
Tamco Systems (Singapore) Pte Ltd. No 5, Penjuru Close, #03-00 Singapore 608600. Tel (65) 6862 3777 Fax (65) 6862 8628