4-20mA Current Sensor
The E4A's 4 20mA Current Sensor is a compact, four-channel current loop transmitter built for advanced industrial monitoring and automation. Engineered for precise and stable 4–20 mA current loop signal accuracy, it delivers dependable data transmission for advanced process control and IoT systems. With its compact DIN rail design and rugged construction, this 4 20mA current sensor ensures dependable performance even in the most demanding industrial environments.
When paired with E4A’s industrial IoT gateway, the 4 20ma current loop transmitter enables seamless communication, providing real-time equipment monitoring and comprehensive data visualization of the 4 20 current loop across automation systems.
Flexible Sensor Integration
The CLS series supports any off-the-shelf 4–20mA probe or current transducer/transmitter, allowing full flexibility in selecting the right device for your specific industrial needs.
Multi-Channel Monitoring
With four independent input channels, the 4 20mA current sensor simultaneously monitors up to four different current loops – ideal for applications that require diverse real-time measurements on a single platform.
Space and Cost Savings
By consolidating multiple sensors into a single unit, the CLS 4 20ma current loop transmitter reduces the need for additional equipment, saving valuable space and lowering overall costs in industrial environments.
Improved Correlation and Analysis
With the ability to monitor multiple channels, the CLS 4 20ma current loop transmitter helps identify correlations between different measurements, leading to more informed decision-making and better operational insights.
Equipment Health Monitoring
By simultaneously tracking multiple current transducer sensors , the E4A’s CLS helps monitor the health of industrial equipment in real-time, enabling early detection of potential issues.
Potential Applications 4 20 mA Current Sensor
Industrial Process Control
Ideal for monitoring 4–20mA signals from industrial current transducer sensors such as pressure transducers, temperature transmitters, or ultrasonic flow transducers. E4A’s CLS enables seamless integration with PLCs, SCADA, or DCS systems for closed-loop process control.
Environmental & Utility Monitoring
With four independent input channels, the 4 20mA current loop simultaneously monitors up to four different parameters—ideal for applications that require diverse real-time measurements on a single platform.
Equipment Health & Predictive Maintenance
Useful for monitoring vibration transducers, RTD temperature sensors, or current transducer sensors on motors and pumps through a 4 20ma current loop transmitter to detect early signs of wear or overheating—supporting proactive maintenance strategies.
Battery & Power System Management
Applicable in renewable energy and backup power setups to monitor current transducer sensors, voltage transmitters, or temperature sensors for charge/discharge currents or system parameters through 4–20mA outputs, ensuring reliable performance and safety.
Measured Parameters
The CLS-4-420-TH can interface with various industrial 4 20ma transmitters to monitor:
pH Level
Pressure
Internal Battery Fuel Gauge
Ambient Temperature
Flow
Relative Humidity
Level
Many More
Technical Specification of 4 20mA Current Sensor
| Main Power | 7-15VDC @ 1.5A (external AC-DC 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 | 2.2 hours / 3.2 hours (AC-DC adapter) 6.6 hours / 7.6 hours (USB Type B) |
| External Sensors | 24VDC 30mA output per channel, isolated |
| Operating Temperature | -20ºC to +60ºC |
| Internal Battery | Battery charging disabled above 45ºC Battery charging disabled below 10ºC Battery discharging disabled above 60ºC |
| Storage Temperature | -40ºC to +85ºC (Battery installed) -40ºC to +85ºC (Battery not installed) |
| 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 | 16-bit resolution |
| Temperature Measurement | -20ºC to +60ºC (±0.5ºC accuracy) |
| Humidity Measurement | 20-85% relative humidity (±3.5% accuracy) |
| Housing Material | ABS plastic |
| Physical Dimensions | Height: 120mm / 4.7 inches Width: 50mm / 1.9 inches Depth: 90mm / 3.5 inches |
| Weight | 250g |
| Mounting | Universal DIN rail 35mm width Magnetic mount |
| Wireless Module | 2.4GHz Bluetooth 5.0 transceiver |
| Communication Range | 300m line of sight |
| Communication Interval | User programmable in 10 second increments |
| Output Power | Up to +5dBm with temp. compensation |
| Receiver Sensitivity | -105dBm, 125kbps |
| Security | 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, orange LED) |
| User Interface | 3 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 | UL/CAN/CSA-C22.2 No. 61010-1 UL/CAN/CSA-C22.2 No. UL 61010-2-30 |
Features of 4 20mA Current Sensor
24/7 Alarm Notifications:
User-Defined Reporting Interval:
Autonomous Operation:
Broad Compatibility:
Off-the-shelf 4–20mA loop-powered transducers, such as pressure, vibration, temperature, and current transducer sensors
Simple Installation:
Wireless Data Transmission:
Coverage:
Customizable Alarm Limits:
Related Products
Related products
Parts & Accessories of 4 20mA Current Sensor
Internal Battery
Mating Connectors
E4A-CON-00017-01 (6-pin)
AC/DC Adapter
DIN Rail Mounting Clip
| Width | 3.50″ cm |
| Length | 19.80″ cm |
| Thickness | 0.039″ (1.00mm) |
| Material | Steel |
Certifications and Distributors
Headquarters
Electronics4All
250 Herzberg Road
Ottawa, ON K2K 2A1
Lab Testing Facility
Hours
Monday - Friday: 8:30AM - 5PM EST
Saturday - Sunday: Closed