Explosion Proof Signal Isolator, DC 24V, 4-20mA

Explosion-proof analog signal isolator supports 24V DC power supply and common 4-20mA current signal input. Its accuracy is up to 0.1%FS, the response speed does not exceed 2ms, and it complies with the [Ex ia Ga] ⅡC explosion-proof standard. The signal isolator is used in industrial automation, PLC, DCS control systems, etc.

SKU: CCHN-SIGNI-SFX

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Delivery date: 6-25 days

Overview

The explosion-proof signal isolator uses three-terminal isolation of the input, output and power supply, and has the advantages of low power consumption and good temperature characteristics.

Features

The explosion-proof analog signal isolator adopts a 12.7mm slim design to save installation space.
Its power consumption is as low as 1.0W, with low heat generation and rapid heat dissipation, which extends the service life of the equipment.
The explosion-proof signal isolator has a high accuracy of 0.1%FS, ensuring accurate signal conversion and more accurate data.
Its response speed is as low as 2ms, the system responds quickly and enhances reliability.
The signal isolator adopts a pluggable design and snap-on terminal blocks, which is simple and quick to install and easy to maintain and replace.
It supports active and passive signals, is compatible with two-, three- and four-wire signal output, and adapts to a variety of industrial application needs.

Specification

Model	CCHN-FK-SFX110	CCHN-FK-SFX112	CCHN-FK-SFX114
Number of Inputs & Outputs	1 input channel & 1 output channel	1 input channel & 2 output channel	2 input channel & 2 output channel
Power supply	Typical value: 24V DC (18V DC~32V DC)
Explosion-proof mark	[Ex ia Ga] ⅡC
Input signal type	DC current signal: 4~20mA
Input impedance	About 75Ω
Output signal type	Passive current: 4~20mA; Active current: 0(4)~20mA, 0~10mA; DC voltage: 0(1)~5V, 0~10V
Load capacity	Passive current: RL≤[(U-3)/0.02]Ω (U is the loop power supply voltage); Active current: 0(4)~20mA: ≤550Ω, 0~10mA: ≤1.1kΩ; DC voltage: 0(1)~5V: ≥1MΩ, 0~10V: ≥2MΩ
Distribution voltage	Open circuit voltage ≤26V, when fully loaded with 20mA output voltage ≥16V
Isolation transmission accuracy	±0.1%F.S (25℃±2℃)
Temperature drift	40ppm/℃
Response time	≤2ms
Dielectric strength	≥2500 VAC (between intrinsically safe side/non-intrinsically safe side); ≥1500VAC (between power supply/non-intrinsically safe side)
Insulation resistance	≥100MΩ (between input/output/power supply)
Electromagnetic compatibility	IEC 61326-3-1
Full load power consumption	24VDC power supply, single-channel full-load output: 1.3W; dual-channel full-load output: 1.8W

Dimension (mm)

Explosion proof signal isolator dimension

Wiring diagram

Explosion proof signal isolator wiring

Applications

Explosion proof signal isolator application

Tips: Main applications of explosion-proof signal isolators

Oil and gas industry: used in oil and gas extraction, refineries and oil storage areas to ensure safe isolation of signals in hazardous environments and prevent explosions caused by electrical faults.
Chemical industry: provides signal isolation in chemical production and corrosive environments to protect control systems from high-risk gases and chemicals.
Mining industry: used in coal mines and metallurgical plants to isolate signals in gas monitoring and automation control systems to avoid explosions caused by electrical faults.
Power and energy industry: widely used in power plants, wind and solar power generation systems to ensure the stability and safety of signal transmission.
Automation control system: in automation systems such as PLC and DCS, isolate field equipment signals to protect control systems from electrical interference.