1. Product Overview
The rail-mounted isolation grid transmitter is a signal isolation, conversion and transmission device used in industrial automation control, which is usually installed on a standard DIN rail. Its core function is to isolate and convert on-site sensor signals (such as temperature, pressure, flow rate, etc.) into standard signals (such as 4-20mA, 0-10V, etc.), and at the same time provide electrical isolation protection to ensure system safety and anti-interference capability.
2. Core Functions
Signal isolation: By means of photoelectric or magnetoelectric isolation technology, ground loop interference is blocked to prevent high voltage from intruding into the control system.
Signal conversion: Supports multiple input/output signal types (such as RTD/ thermocouple to 4-20mA, HART signal transmission).
Power distribution function: Provide loop power supply (usually 24VDC) for two-wire transmitters.
3. Technical parameters
Project Parameter description
Input signals include 4-20mA, 0-10V, RTD (Pt100), thermocouple (K/J/S type), frequency signal, etc
Output signals: 4-20mA (load ≤500Ω), 0-10V, RS-485 (Modbus protocol), etc
Isolation intensity: Isolation voltage between input - output - power supply ≥1500V AC (1 minute)
Accuracy grade: 0.1% to 0.2% FS (full scale)
Response time ≤10ms (analog output)
Operating temperature: -20℃ to +60℃ (wide-temperature type can reach -40℃ to +85℃)
The power supply is 20-35VDC (typically 24VDC), and the power consumption is ≤2W
Protection grade: IP20 (cabinet installation), some models support IP65 (dust and water resistance)
Certification standards: CE, Ex ia/ib IIC T6 (explosion-proof), UL, SIL2/3 (Functional Safety)
4. Product Features
Modular design: Compact housing (width × height × depth ≈12.5×100×115mm), supporting DIN EN 50022 standard rail mounting.
Tool-free wiring: Spring-clamped terminals or plug-in terminals, facilitating quick installation and maintenance.
LED status indication: Visualization of power supply and input/output signal status.
HART compatibility: Some models support HART protocol communication and seamless integration with smart instruments.
Anti-electromagnetic interference: Complies with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (Surge) standards.
5. Application Scenarios
Hazardous areas: Explosion-proof environments in petrochemicals, natural gas, etc. (must comply with ATEX/IECEx certification).
Industrial control: Signal isolation of PLC/DCS systems, noise suppression of frequency converters.
Energy management: Signal conditioning for solar inverters and battery monitoring systems.
Medical equipment: Isolate the acquisition of bioelectrical signals (such as EEG/ECG devices).
