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Cell Voltage Monitoring
CVM-64H
CVM-64H
Balanced Performance with High Channel Density.
A cell voltage monitoring (CVM) system tailored for research, testing and practical application of H2 fuel cells. The CVM system protects the integrity of individual cells and provides valuable data for predictive maintenance planning and performance optimization.
Adapted for research and testing purposes, the CVM-64H system offers excellent accuracy and is designed primarily for hydrogen fuel cells and smaller electrolyzers. These ready-to-use cell voltage monitor sets are easily integrated into specialized applications and allow direct connection to a PC via USB or to a PLC via RS-485 or CAN bus.
Explore our precision 5 V solutions with the CVM-24P module and sets, or opt for the cost-effective CVM-32A module and sets. For broader temperature and voltage monitoring requirements, consider our TEVOMET solutions.
Product Introduction Video
See introduction to CVM features and practical live measurement demonstration of Kolibrik Cell Voltage Monitoring Sets.
Key Features
- Modular and scalable design – 64 channels per module, up to 20 modules per system, supporting 1280 channels
- The best precision and resolution – 24-bit resolution, up to 250 sps @ ± 2.5 V with RMS noise 10 ... 100 μV
- Galvanic isolation – safe operation and signal integrity (typically ≥ 1 kV)
- 26-pin Molex Micro-Lock Plus connector for safer connection
- Multiple communication options – USB, RS‑485, CAN
- Standalone operation or software integration – with Kolibrik software or custom TCP/IP control
Sample Variant – Available on E-shop
| CVM-S64H | 1× CVM-64H: 64 channels total, RS-485/USB/CAN, 1× output, 1× input; Out of Box Solution |
| CVM-S128H | 2× CVM-64H: 128 channels total, RS-485/USB/CAN, 2× output, 2× input; Out of Box Solution |
| CVM-S192H | 3× CVM-64H: 192 channels total, RS-485/USB/CAN, 3× output, 3× input; Out of Box Solution |
| CVM-S256H | 4× CVM-64H: 256 channels total, RS485/USB/CAN, 4× output, 4× input; Out of Box Solution |
| CVM-S320H | 5× CVM-64H: 320 channels total, RS-485/USB/CAN, 5× output, 5× input; Out of Box Solution |
| CVM-E64H | 1× CVM-64H: 64 additional channels, 1x output, 1x input; Extension for set |
Technical Parameters
| Channel count | 64 channels per one CVM-64H module | |
| Channel voltage range | ± 2.5 V | |
| Input impedance | ≥ 1 MΩ | |
| Isolation | 1 kV between channels and power supply + communication bus
Additional isolation can be provided by isolating bus segments |
|
| Sampling | Precise 24-bit ADCs, all-channel sample rate up to 250 sps | |
| Accuracy | 0.02% of range + 0.05% of reading | |
| Cell connection | 26-pin Molex Micro-Lock Plus connector | |
| Communication bus | RS-485: XC2 / Modbus RTU
CAN bus Compatible with other Kolibrik modules |
|
| Inputs / outputs | Opto-isolated I/O with serial communication capability | |
| Power supply | 7 ... 33 V DC / 2.2 W max | |
| Application examples | H2 fuel-cell tests stands
H2 fuel-cell application monitoring Electrolyzers monitoring Control systems |
|
| Dimensions | CVM-24H module without enclosure
CVM-S64H … CVM-S1280H CVM-E64H |
117 × 58 × 13.5 mm
122 × 61 × (n*) × 16 + 24) mm 122 × 61 × 16 mm *) n - number of 24-channel modules |
| Mounting | DIN-rail and wall-mount holders for set enclosures
Single module without enclosure: 4× mounting hole 2.7 mm, hex spacers with M2.5 thread |
|
| Channel count examples | Single CVM-64H module
CVM-S64H CVM-S128H CVM-S320H CVM-E64H |
64 channels
64 channels 128 channels 320 channels additional 64 channels |
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Multiple modules can be daisy-chained to measure up to 480 channels, custom sets for more channels available | |
| Ambient operating temperature | -40 °C to +85 °C
+85 °C to +125 °C module can be powered, measurement inactive |
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*) Channels are organized by groups of 4 channels. Channels in one group can measure up to ±20 V if the sum of group channels does not exceed 20 V. So, one channel can measure up to ±20 V, if other channels in group are short-circuited. Note that adjacent channels and groups are chained together and are not independent.
If these variants do not suit you, never mind! Tell us, what you exactly need – we offer customized solutions!
Documentation
Software
To run your experiments, you’ll use the application CVM Manager – our measurement and control app that manages everything from workstation setup to real-time data acquisition and visualization. Just connect the Cell Voltage Monitoring system, and let the science begin.
Gallery
Custom Design
We offer customization of model parameters, tailored mechanical and electrical setups, or as part of complete development services for custom projects and series production. Need something specific? Just tell us your key requirements — number of channels, interfaces or custom cables needs, custom enclosures, software functions, communication protocols, and any other application-specific constraints — we offer customized solutions!
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