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Cell Voltage Monitoring
CVM-24P

High-Accuracy. High-Speed. Purpose-Built for Critical Diagnostics.

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-24P system offers excellent accuracy and is designed primarily for 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 2.5 V solutions with the CVM-64H 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.

Get My Offer Pricing & Orders All CVM Models

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 – 24 channels per module, up to 20 modules per system, supporting 480 channels
  • The best precision and resolution  – 24-bit resolution, up to 500 sps @ ± 5 V with RMS noise 10 ... 100 μV
  • Galvanic isolation – safe operation and signal integrity (typically 1 kV)
  • 26-pin IDC connector (automotive-grade connectors on request)
  • 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-S24P 1× CVM-24P: 24 channels total, RS-485/USB/CAN, 1× output, 1× input; Out of Box Solution
CVM-S48P 2× CVM-24P: 48 channels total, RS-485/USB/CAN, 2× output, 2× input; Out of Box Solution
CVM-S72P 3× CVM-24P: 72 channels total, RS-485/USB/CAN, 3× output, 3× input; Out of Box Solution
CVM-S96P 4× CVM-24P: 96 channels total, RS485/USB/CAN, 4× output, 4× input; Out of Box Solution
CVM-S120P 5× CVM-24P: 120 channels total, RS-485/USB/CAN, 5× output, 5× input; Out of Box Solution
CVM-E24P 1× CVM-24P: 24 additional channels, 1× output, 1× input; Extension for set

Technical Parameters

Channel count 24 channels per one CVM-24P module
Channel voltage range ± 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 500 sps
Accuracy 0.02% of range + 0.05% of reading
Cell connection 26-pin IDC connector (automotive-grade connectors on request)
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-24P module without enclosure
CVM-S24P … CVM-S480P
CVM-E24P
 		 85 × 58 × 13.5 mm
90 × 61 × (n*) × 16 + 24) mm
90 × 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-24P module
CVM-S24P
CVM-S48P
CVM-S120P
CVM-E24P		 24 channels
24 channels
48 channels
120 channels
additional 24 channels

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

*) 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!

Ensure Longevity and Safety.
Talk to Our Experts About Your CVM Needs.

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