1) Brief Introcucion

    LU-A12 (type F) Barriers (analogue input, 1 channel) conform to the standard of GB3836.1-2000 and GB3836.4-2000,and [Exib]IIC for explosion-proof certified. The barriers provide isolated DC voltage from safe-area to hazardous-area for 2-wire transmitters, and transform 4-20mA DC which from the 2 wire transmitter to isolated 4-20mA.d.c. to output.

2) Technical Parameters:

2.1) main functions and features
2.1.1 compact and insert-mounting
2.1.2 input circuit intrinsically safety,[Exib]IIC if suitably certified.
2.1.3 the supply of power to 2-wire transmitters.
2.1.4 power supply for field transmitter, and prevent hazardous energy from the instrinsically

safety terminal into the hazardous area, transfer the DC signal to isolated standard process

signal.
2.1.5 with power indicator,zero & span adjustment for output signal.
 
2.2) input(hazardous-area signal)
2.2.1 current input:current:4-20mA;input resistance:50Ω(build-in)
2.2.2 voltage input:voltage:1-5V;input resistance:>50KΩ
2.2.3 RTD input(Pt100):input signal:-200 to +800 degree

2.3) output
2.3.1 current output:current:4-20mA,load resistance:<=500Ω
2.3.2 voltage output:voltage:1-5V;load resistance:>=10KΩ

2.4) intrinsically safety:
2.4.1 explosion-proof:[Exib]IIC
2.4.2 max.voltage Um:250V
2.4.3 max.output voltage Uo:30V
2.4.4 max.output current Io:30mA
2.4.5 max.external inductance Lo:10mH
2.4.6 max.external Capacity Co:0.066 uF

2.5) environmental parameters:
2.5.1 power supply:DC24V+/-10%, current consumption:4W when aftereffect Wpp<10%
2.5.2 temperature for operating:-20 to +60 degree
2.5.3 humidity:0%-85%RH(none congeal)

3) performace index(to full span)

3.1 standard precision:+/-0.2%F.S
3.2 temperature drift:+/-0.02% per degree.
3.3 response time:<=0.5s(0->90%)
3.4 power voltage affect:+/-0.2%/permitted voltage range
3.5 insulated resistance:input,output and power supply are isolated from each other>=50MΩ/DC 500V
3.6 isolation intensity:input-output-power supply-ground:
     DC 1500V/1 minute(DC power)
     AC 1500V/1 minute(AC power)
3.7 load resistance affect:+/-0.2%/500Ω(when current output);+/-0.2% (when voltage output)
3.8 setting time:<=3s

4) construction and dimension

4.1 structure:compact,insert-mounting
4.2 connection:3mm connection terminal
4.3 terminal screw material:nickel plating around surface of iron(screw arrowed wrest<0.8N.m)
4.4 shell material:burn-bear colophony
4.5 isolation:channel isolation(input,output and power supply are isolated from each other)
4.6 zero adjustments-range:-5 to +5%
4.7 span adjustments-range:95 to 105%
4.8 power indicate light:green LED,light on when power supply
4.9 mounting:DIN rail
4.10 outline dimension(W*H*D):22.5*100*113.5mm
4.11 weight:app.250g