4-Channel Current Loop Sensor
E4A’s Current Loop Sensor (CLS) is a versatile four-channel 4-20mA sensor designed for seamless integration across a wide range of environments. Compact and easy to install, it mounts conveniently on a DIN rail and supports any off-the-shelf 4-20mA probe, offering maximum flexibility in sensor selection. With the ability to monitor four channels simultaneously, the CLS enables comprehensive, real-time data collection from multiple parameters - streamlining operations and improving efficiency.
Once connected, the CLS communicates effortlessly with any E4A gateway, becoming a reliable part of your infrastructure and supporting efficient, dependable system management.
Flexible Sensor Integration
Supports any off-the-shelf probe with a 4-20mA output, providing flexibility in selecting the most suitable sensor for specific applications.
Multi-Channel Monitoring
Monitors up to four different parameters simultaneously, offering real-time data collection from multiple sensors on a single device.
Space and Cost Savings
By consolidating multiple sensors into a single unit, the CLS reduces the need for additional equipment, saving valuable space and lowering overall costs in industrial environments.
Correlation and Analysis
With the ability to monitor multiple channels, the CLS helps identify correlations between different measurements, leading to more informed decision-making.
Equipment Health Monitoring
By simultaneously tracking multiple parameters, the CLS sensor helps monitor the health of industrial equipment in real-time, enabling early detection of potential issues.
Measured Parameters

pH Level

Pressure

Internal Battery Fuel Gauge

Ambient Temperature

Flow

Relative Humidity

Level

Many More
Technical Specification
| Main Power | 7-15VDC @ 1.5A (external adapter) |
| Other Power (Optional) | USB Type B (5VDC @ 500mA) Internal Battery (3.6VDC, 3500mAh Li-ion) |
| Maximum Charging Current | 1.5A (AC-DC adapter) 500mA (USB Type B) |
| Li-ion Charge Time | 2.2H/3.2H (AC-DC adapter) 6.6H/7.6H (USB Type B) |
| External Sensors | 24VDC 30mA output per channel isolated |
| Operating Temperature | -20ºC to +60ºC (lead-acid powered) |
| Internal Battery | Battery charging disabled >45⁰C Battery charging disabled <10⁰C Battery discharging disabled >60⁰C |
| Storage Temperature | -40ºC to +85ºC (with battery) -40ºC to +85ºC (without battery) |
| Operating Humidity | 20-85% (operating and storage) |
| Ingress Protection Rating | IP30 |
| Pollution Degree | 2 |
| Analog Front End | 4 Channels for current measurement 0-25mA input per channel |
| Resolution | 24-bit resolution |
| Temperature Measurement | -20ºC to +60ºC (±0.5ºC accuracy) |
| Humidity Measurement | 20-85% relative humidity (±3.5% accuracy) |
| Housing Material | Flame Retardant Polycarbonate/ABS |
| Physical Dimensions | Height: 120mm / 4.7 inches Width: 50mm / 1.9 inches Depth: 90mm / 3.5 inches |
| Weight | 250g |
| Mounting | Universal 35mm DIN rail |
| Wireless Module | 2.4GHz Bluetooth® 5.0 transceiver |
| Communication Range | 125m line of sight |
| Reporting Interval | User programmable in 30s increments |
| Encryption | AES 128-bit crypto accelerator ECC and RSA public key accelerator (PKA) SHA2 accelerator (full suite up to SHA-512) True Random Number Generator (TRNG) |
| Indicators | Front fascia membrane (red, green, amber LED) |
| User Interface | 2 push buttons (user-programmable) 1 power button 2 rotary encoders |
| Current Measurement | 2 x 6 pin connector |
| Communication Port | USB 2.0 debugging interface |
| FCC | 2AXVCLS01 |
| Industry Canada | 26661-CLS01 |
| Safety Standards | UL Std. No. 61010-1 3rd Edition + AM1: 2018 CAN/CSA-C22.2 No.61010-1-12 Third Edition + AM1:2018 CAN/CSA-C22.2 No. 61010-2-030:18 UL 61010-2-030:2018 |
Features
24/7 Alarm Notifications:
Continuous alerts for immediate awareness of battery issues.
Simple Installation:
Compact design mounts easily on a DIN rail, simplifying installation and reducing setup time.
Autonomous Operation:
Powered by an external power supply and equipped with an internal battery for emergency use.
Broad Compatibility:
Off-the-shelf 4-20 mA loop-powered transducer, such as pressure, vibration, temperature, and others.
Customizable Alarm Limits:
Allows users to set specific thresholds for alerts.
Coverage:
One sensor monitors up to 4 channels.
User-Defined Reporting Interval:
Customizable intervals for generating reports.
Wireless Data Transmission:
Utilizes Bluetooth® 5, eliminating the need for LAN cable pulls into the battery room.
Related Products
Parts & Accessories
Internal Battery
E4A-BAT-00002-01
Mating Connectors
E4A-CON-00017-01 (6-pin)
AC/DC Adapter
E4A-BSA-00081-01
DIN Rail Mounting Clip
E4A-MEC-00019-01
E4A-MEC-00019-01
| Width | 3.50″ cm |
| Length | 19.80″ cm |
| Thickness | 0.039″ (1.00mm) |
| Material | Steel |
Our Partners
Sub Heading
Sub Heading
Sub Heading
Sub Heading
Sub Heading
Sub Heading
Sub Heading
Headquarters
Electronics4All
250 Herzberg Road
Ottawa, ON K2K 2A1
Lab Testing Facility
Hours
Monday – Friday: 8:30AM – 5PM EST
Saturday – Sunday: Closed





