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Product Model

ELS2 Interface Module

The ELS2 Electrolyte Level Sensor is a non-invasive level sensor with incorporated temperature monitoring designed for quick installation and easy set up. This system complies with the NERC PRC-005 requirements for electrolyte level inspection. With this sensor, you eliminate unnecessary remote site visits and will eliminate the required quarterly inspection of battery electrolyte level in your battery string.

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Best Suited For:
  • Power Generation
  • Power/Gas Transmission and Distribution
  • Nuclear Power
  • Oil and Gas
  • Chemical/Petrochemical (excl. Oil & Gas)
Warranty: One year limited warranty against defects in material and workmanship


The three steps of battery monitoring automation, enabled by the Alber Cellcorder CRT-400 cell resistance tester
 Modular design easily expands to monitor an unlimited number of strings.
 Industry standard MODBUS protocol interfaces to third party building management systems via RS-485.
Direct communication via a USB service port. 
 Higher Availability:
 Can be used in conjunction with Alber battery monitors to manage virtually all battery configurations.
 Infrared sensing technology for improved electrolyte level detection
 Cell temperature monitoring for notification of corrective action
 Low Total Cost of Ownership:
 Eliminate the required quarterly inspection of battery electrolyte levels
 Maintaining the proper electrolyte level extends useful battery life
Ideally Suited For:
 Designed specifically to comply with the NERC PRC-005 requirements for electrolyte level inspection.


 Three form C contacts for alarm notification
 Status indicators on each cell for easy alarm identification
 Automatic or manual reset for any alarm
 Designed to work on nonopaque VLA battery cases
 Automatic calibration

An ELS2 system will include one sensor module to be attached to each cell for monitoring electrolyte level and temperature. Each of these modules will be connected back to a system interface module called the ELSI2 for processing of data for alarm analysis and reporting. The system can operate as a standalone or when combined with the Alber UXIME, provides all battery monitoring features.

ELS2 Interface Module

*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.

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Products Support Contacts

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Geist Support - Americas (Rack PDU and Watchdog)
+1 888 630 4445
1777 Yolande Avenue Lincoln Nebraska USA
Product areas of focus: Power Distribution, Monitoring
Vertiv (Customer Service for Albér Products)
+1 954 377 7101
7775 West Oakland Park Blvd Sunrise Florida 33351 USA
Product areas of focus: Monitoring
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