CELLGUARD™ ELS+

CELLGUARD™ ELS+

The CELLGUARD™ ELS+ Electrolyte Level Monitoring System provides reliable electrolyte level and temperature monitoring on Vented Lead Acid (VLA) batteries of any voltage, size, or design in Utility, Telecommunications, Data Centers, and Industrial Battery Plant applications.

SAFE & EFFECTIVE VLA BATTERY MONITORING

The CELLGUARD™ ELS+ Electrolyte Level Monitoring System is completely non-invasive to VLA batteries, delivers 24/7 monitoring of electrolyte levels, and enhances operational safety with battery case temperature alarming in the event of abnormal battery thermal conditions.

ELS - Install - Wide.psd
KEY ADVANTAGES

ELS - Icon - Capabilities.psd

MONITORING CAPABILITIES

During a low level electrolyte level condition or if the battery case temperature limits are exceeded, the sensor communicates an alarm condition to the hub unit. The hub senses the alarm state and provides a dry contact alarm\lead status.

ELS - Icon - Visual.psd

VISUAL ALARM

Both the sensors and hub units provide LED indication to visually identify VLA batteries that require servicing.

ELS - Icon - Compliance.psd

NERC PRC-005 COMPLIANCE

Complies with NERC PRC-005 electrolyte level inspection requirements with 24/7 alarm reporting.

ELS - Icon - Install.psd

EASY INSTALLATION

Modular quick connect cabling provides time-saving installation without the need for a site survey. 

ELS - Configure - Wide.psd
EASY TO INSTALL, EASY TO CONFIGURE

The CELLGUARD™ ELS+ Electrolyte Level Monitoring System can monitor up to 600 batteries per hub. Multiple hub inputs can be used on a single battery string to monitor all the cells within the battery string.

ELS - Hardware - Sensors.psd

ELECTROLYTE LEVEL SENSOR

Sensors provide LED indication to visually identify VLA batteries that require servicing. Sensors are connected in series to adjacent sensors with modular cables to create a sensor string. 

ELS - Hardware - Hub.psd

SENSOR HUB

The sensor string terminates into one common powering and alarming module hub. The hub aggregates all individual sensor alarms from all sensor strings to one common two form C dry contact interface and provides LED identification of the status of each string. 

ELS - Hardware - Sensor String.psd

SENSOR STRINGS

Additional strings can be monitored by introducing another hub and combing their dry contact outputs. Optimized cable routing is configured from hub-to-sensor and sensor-to-sensor without additional cabling.

ELS - Hardware - Bracket.psd

SENSOR ALIGMENT TOOL

The sensor alignment tool, with built in bubble level, ensures correct sensor placement for accurate electrolyte level sensing.

ELS - Hardware - Sensor Back.psd

MOUNTING

Sensors are easily adhered to the battery case using double sided tape specifically designed to be compatible with VLA battery cases, even in harsh operating environments.

ELS - Hardware - Sensor Calibrate - sized.psd

CALIBRATION

Sensors are calibrated to the battery case characteristics and electrolyte level state in seconds with the press of a single button.

ELS+ Sensor

Battery Types Vented Lead-Acid (VLA) battery
Alarm Leads Active Open, via RJ25 jack connection
Alarm Activation (Electrolyte Level) Activation when level is below ± 2 mm of calibrated reference
Response time: 4 minutes
LED Status Indicator Flashing Green (normal state), Flashing Red (alarm state),
Amber (non-calibrated)
Power Input 12V dc ± 2V dc at 2.5 mA Typical, via RJ25 jack
CG-ELS+ HUB connection
Operating Temperature Range -10 to 65° C
Storage Temperature Range -20 to 70° C
Dimensions 2.60” W X 2.60” D x 1.00” H
(66.04 mm W x 66.04 mm D x 25.4 mm H)
Enclosure 94V-0 ABS Plastic Housing
Mounting 3M Adhesive Tape
Maximum Case Thickness for Level Sensor 1/2” (non-opaque)

ELS+ Alarm Hub

Battery Strings Up to 4 CG-ELS+ Sensor strings containing 2, 4, 6, and 8 Volt batteries
Input Configurations Flexible Configuration, typically 24, 48, 110/120, 220/240 and 480 Volt systems
ELS+ Sensor Arrangement 600 CG-ELS+ Sensors per CG-ELS+ HUB with 150 maximum
CG-ELS+ Sensors for each of the 4 CG-ELS+ HUB inputs
Multiple CG-ELS+ HUB Inputs can be used on a single battery string to monitor all the cells within the battery string
Alarm Output 2 Form C Dry Contacts, 1A
Duplicate connector pins for alarm aggregation from multiple Hub units
LED Status Indicator Green (normal state), Red (alarm state)
Power Input 120V/240V AC 50/60 Hz AC Wall Adapter to 12 VDC at 2 Amps max
Power Status LED Green when module power is on
Operating Temperature Range -10 to 65° C
Storage Temperature Range -20 to 70° C
Dimensions 3.972” W x 2.023” D x 0.876” H
(100.9 mm W x 51.40 mm D x 22.25 mm H)
Enclosure 94V-0 ABS Plastic Housing
Mounting Cable Tie Brackets or Free Standing

ELS+ SENSORS

Model Description
CG-ELS-11-CABLE Electrolyte Level Sensor (11" Cable)
CG-ELS-22-CABLE Electrolyte Level Sensor (22" Cable)

ELS+ ALARM HUB

Model Description
CG-ELS-HUB-84-CABLE Electrolyte Level Sensor Hub (with AC Power Adapter)

ELS+ ACCESSORIES

Model Description
CG-ELS-INSTALL-KIT Installation Kit (Recommended 1 Per Installation)