TxIsoLoop-1 and TxIsoLoop-2 simplify your application and avoid undesirable ground loops by providing single and dual loop galvanic isolation — a 4-20mA signal ground loop isolator with output powered directly from the input loop, high accuracy, galvanic isolation, and high reliability. This is the single channel version.
The 0/4-20mA input is measured and an identical isolated signal is reproduced at the output. Power is drawn from the 0(4)-20mA input loop, so no auxiliary or external power supply is needed.
Recommended for electrical grids where electric potential difference is a major risk, the TxIsoLoop galvanic isolator eliminates ground loops, ensuring accuracy and signal safety. This accessory, indispensable for industrial environments, operates with a response time of only 2ms.
✅ 3 Year Manufacturer Warranty — backed by our UK-based technical support
Novus TxIsoLoop Datasheet Download
Novus TxIsoLoop Manual Download
Technical Details
Maximum input voltage: 32 Vdc. Voltage drop: <3 Vdc
Output signal: 0(4) to 20mA. Max load: 1450Ω
Accuracy: 0.2% FS @ 0-60°C / RL=250Ω; 0.3% FS @ -20-75°C / RL=250Ω
Operating current: >0.1mA. Overload: <40mA; <32Vdc
Response time: 2ms @ RL=250Ω
Isolation: 3000Vac / 10s; 240Vac continuous. EMC: EN 61326-1
Ambient temperature range: -20 to +75°C. Humidity: 20-90% RH. Protection: IP40
Wire gauge for connections: 0.14 to 1.5mm². Recommended torque: 0.8Nm. Terminal blocks injected in Polyamide
Frequently Asked Questions
Do I need a separate power supply?
No — power is drawn directly from the 4-20mA input loop, so no auxiliary power supply is needed.
What's the difference between this and the TxIsoLoop-2?
Channel count — this is the single channel version; the TxIsoLoop-2 provides two isolated channels (or splits one signal into two outputs).
Why would I need a loop isolator?
To break unwanted ground loops between two pieces of equipment sharing a 4-20mA signal, which can otherwise cause measurement errors or equipment damage on grids with electric potential differences.
Industry Applications
- Ground Loop Elimination — protects signal accuracy on installations with electric potential differences.
- Sensor-to-PLC Isolation — safely interfaces field instruments with control system inputs.
- Harsh Electrical Environments — galvanic isolation protects against transients and noise.