GS8500-EX Digital Intrinsic Safety Barrier

Digital input, relay output isolated barrier, transfers digital signals (dry contact or NAMUR proximity switch) from hazardous area to safe area. Each channel can be provided to select phase reversal and to enable line fault detection. And digital output isolated barrier, with 12V/45mA output to the hazardous area, is controlled by switches and logic signal in the safe area. 

This intrinsically safe barrier is suitable for driving IS devices such as solenoid valves, LED and some other low-power loads located in the hazardous area. Digital input barrier needs an independent power supply and galvanic isolation among power supply, input and output.

Advantages of Chenzhu GS8500-EX Digital Intrinsic Safety Barrier
Ultra-thin 12.5mm

High reliability and precision

Strong EMC performance

G3 anti-corrosion

Flexible power mode

Parameter of GS8500-EX Digital Intrinsic Safety Barrier


1/1: GS8512-EX.11
1/2: GS8512-EX.12
2/2: GS8512-EX/22
3/3: GS8512-EX.33 4/4：GS8114-EX
Supply Voltage 20~35V DC 20~35V DC
Current Consumption ≤30mA(GS8512-EX.11)
≤40mA(GS8512-EX.12 / GS8512-EX.22)
≤65mA(GS8512-EX.33） ≤75mA
Open circuit voltage ≈8V ≈8V
Short-circuit Current ≈8mA ≈8mA
Input signal Dry contact or NAMUR proximity switch Dry contact/proximity switch
Output signal Relay Relay
Relative humidity 10%~90% 10%~90%
Response time ≤10ms ≤20ms
Ambient Temperature -20℃~+60℃ -20℃~+60℃
Weight Approx. 100g Approx. 150g

1/1：GS8519-EX.11
1/2：GS8519-EX.12
2/2：GS8519-EX.22 1/2：GS8519-EX.12A
With LFD function
Supply Voltage 20~35V DC 20~35V DC
Current Consumption ≤40mA(GS8519-EX.11)
≤60mA(GS8519-EX.12 / GS8519-EX.22) ≤40mA
Open circuit voltage ≈8V ≈8V
Short-circuit Current ≈8mA ≈8mA
Input signal Dry contact/proximity switch Dry contact/proximity switch
Output signal Transistor Relay
Digital Output 4.5V≤VH≤12V，VL≤0.5V
Drive current≤10mA, Load resistance≥1kΩ 4.5V≤VH≤12V，VL≤0.5V
Drive current≤10mA, Load resistance≥1kΩ
Relative humidity 10%~90% 10%~90%
Ambient Temperature -20℃~+60℃ -20℃~+60℃
Weight Approx. 150g Approx. 100g


1/2：GS8515-EX
Supply Voltage 20~35V DC
Current Consumption ≤50mA
Control Input ON/OFF control(9，10)
Upper limit/lower limit control(9，10，11)
Input signal Dry contact/proximity switch
Output signal Relay
Input signal Dry contact/proximity switch
Response time ≤20ms
Ambient Temperature -20℃~+60℃
Weight Approx 150g