We can meet your CVM needs in two ways: A standard CellSense solution is available with hardware for 48, 96 or 144 cells. This way we support stacks with any number of cells up to 144. We can build custom CellSense systems upon request with hardware for any number of cells and with a form factor defined by the customer in order to fit the CVM in tight spaces or close to the stack. The table below shows the specifications for the standard system of the second generation of CVMs. Even in the standard system some options are available. In the second half of 2008 production of a second generation CVM will be started. This table will be updated when appropriate.The new or changed features of the second generation CVM are also listed.
| CellSense FC Standard device | Options available | |
|---|---|---|
| power requirement | < 30 mW / cell | |
| power supply | 18..32 V DC | yes |
| number of cells (hardware) | 48, 96, 144 | yes |
| conversion accuracy | 10 mV | |
| conversion rate | 1000 cells / sec | yes |
| cell voltage range | -0.1 .. 1.1 V | |
| measurement method | quasi simultaneous | |
| cell voltage input impedance | 10 kΩ | yes |
| Interface | CAN, 500kbps, 11 bit ID | yes |
| relay outputs | 1 change over | |
| relay contact rating | 30VDC, 250VAC, 8A | |
| open collector outputs | 1 isolated | |
| open collector output rating | 50VDC, 150mA | |
| additional inputs | none | yes |
| isolation voltage (power) | 1500 V | |
| isolation voltage (CAN) | 2500 V | |
| isolation voltage (relay) | 8000 V | |
| isolation voltage (OC output) | 2500 V | |
| ambient temperature | -20..80 °C | yes |
| weight (excl. housing) | < 10 g / cell | |
| housing | 160 x 80 x 120 | yes |
| cell connection interface | D25 connector per 24 cells | yes |
| internal data logger | 2GB SD card | yes |
These specifications are subject to change without notice