Loop-powered DC Current Isolator 3185

Application

• 1:1 input loop powered isolator of current signals in the range 0(4)…20 mA.
• 3185 is an easy-mounting DIN rail unit.
• A very competitive choice in terms of price and technology for galvanic isolation of current signals.
• Provides surge suppression and protects control systems from transients and noise.
• 3185 eliminates ground loops and can be used for measuring floating signals.
• The device can be mounted in the Safe area or in Zone 2 and Cl. 1 Div 2. area.

Technical characteristics

• 3185 is powered by the analog input current signal loop.
• Low input voltage drop, type 1.35 V + Vout.
• Excellent conversion accuracy is better than 0.1% in the range of 0…20.5 mA.
• The functional range is 0…23 mA, meaning 3185 is NAMUR NE43 compliant.
• Inputs and outputs are floating and galvanically separated.
• The output is voltage limited to 17.5 VDC.
• High galvanic isolation of 2.5 kVAC.
• Fast response time < 5 ms.
• Excellent signal/noise ratio > 60 dB.

Mounting / installation / programming

• DIN rail mounting with up to 330 channels per meter.
• Temperature operation range is from -25…+70°C.