
National Supervision and Inspection Center for Explosion Protection
and Safety of Instrumentation(NEPSI)
Compliancy with standard: GB3836.1、GB3836.4 and GB3836.20
Ex-marking: [Ex ia Ga] ⅡC
maximum voltage: Um=250V
Intrinsic safety parameter:(7,8 terminals)
Uo=1.2V, Io=0.2mA, Po=0.06mW
ⅡC:Co=100μF , Lo=100mH
ⅡB:Co=300μF , Lo=300mH
ⅡA:Co=800μF , Lo=800mH
(1) For distributed inductance and capacitance e.g. as in a cable, allow
the values of capacitance and inductance;
(2) For circuits containing up to 1 % inductance or up to 1%
capacitance with a cable, allow the values of capacitance and inductance;
(3) For connection of the combined inductance and capacitance where
both are greater than 1% of the allowed value (excluding the cable), allow
up to 50% each of the values of capacitance and inductance.
Largest external capacitance (Co) and inductance (Lo) numerical
attention when using the following requirements:
Application
Dimensions
118.9mm×106.0mm×12.5mm
1 2 3
Safe-area
Hazardous-area
Summarize Operation Conditions
Specification
Vibration sensor input
hazardous area can be 1:1 safe area, can
transmit AC and DC signals. Input circuit,output circuit and power supply
are each galvanically isolated.
isolated barrier, voltage signal outputed by
sensor in transmission to
(1). The air should not contain any medium corrupting the coat of
chrome,nickel and silver.Moreover,violent quiver and impact or any cause
of electromagnetic induction (such as big current or spark,etc.)must be
avoided when using.
(2). Operating temperature: -20℃~+60℃
(3). Storage temperature: -40℃~+80℃
(4). Relative humidity: 10%~90%
Intrinsic safety explosion protection loop system
Special requirements have to be confirmed before using the intrinsically
safe explosion loop system(intrinsically circuit) which connected by isolated
barrier and intrinsically safe apparatus in field:
(1) The explosion level of intrinsically safe apparatus should meet the
requirements of operation conditions. The apparatus should pass the
explosion protection test and get the certificate by state-authorized
explosion-proof product certification bodies.
(2) The intrinsic safety parameters of isolated barrier and intrinsically
safe apparatus both are sure, and comply with 12.2.5 of GB 3836.15-2000.
(3)If any parameters are unclear, the system has to be confirmed by
state-authorized explosion-proof product certification bodies.
Safety Certificates
Number of channels: 1
Supply voltage: 20~35V DC
Current consumption:≤40mA
Safe-area output:
Signal: -10V +10V
Load resistance: RL≥20kΩ
Hazardous-area input:
Signal: -10V +10V
Impedance: 10kΩ
DC Transfer accuracy: <±0.2%F.S.
AC Transfer accuracy: 0Hz 600Hz ±0.2%F.S.
600Hz 10kHz -1.5% + 0.2%F.S.
Phase response: Less than 10us is equals to
-0.72 00Hz
-2 00Hz
-3.6 kHz
-36 0kHz
Voltage bandwidth: -3dB≤40kHz
Temperature drift: 0.005%/℃(-20℃60℃
Power supply protection: Protect the barrier form reverse supply voltge
destroy
Electromagnetic compatibility:According to GB/T 18268(IEC 61326-1)
Dielectric strength:
Between non-intrinsically safe circuits and intrinsically safe circuits≥
2500VAC
Between power supply part and non-intrinsically safe part≥500VAC
Insulation resistance:
Between non-intrinsically safe part and intrinsically safe part≥100MΩ
Between power supply part and non-intrinsically safe part≥100MΩ
Weight: Approx.100g
Suitable location:
Mounting in non-hazardous area, and connected to the IS apparatus in
zone 0 hazardous area.
Suitable IS apparatus:
~
~
~
~ ~
~+)
°2
°6
°1
°1
Vibration sensor
IN OUT
Monitoring
equipment
2(-)
1(+)
-+
7(+) 6(-)
8(-) 5(+)
Vibration
sensor
GS8558-EX
Power supply
Power supply