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2-wire transmitter isolator / current isolator
- 1 or 2 channel 2-wire transmitter isolator / current isolator
- 1:1 conversion in the range 3.5...23 mA
- Low channel voltage drop and fast response time < 5 ms
- Excellent accuracy, better than 0.05%
- Slimline 6 mm housing
- 3186A is a 1:1 output loop-powered 2-wire transmitter isolator that excites and measures passive input signals.
- 3186B is a 1:1 output loop-powered 2-wire current isolator that measures active input signals.
- A very competitive choice in terms of both price and technology for galvanic isolation.
- Provides surge suppression and protects control systems from transients and noise.
- 3186 eliminates ground loops and can be used for measuring floating signals.
- The device can be mounted in Safe area or in Zone 2 and Cl. 1 Div 2. area.
- 3186 is powered by the host loop voltage.
- Wide supply range from 6...35 V.
- Low input to output voltage drop typ. 2.5 V (3186A).
- Low input drop ≤ 3 V (3186B), even when no loop power is applied to the output terminals.
- Excellent conversion accuracy, better than 0.05% in the range 3.8…20.5 mA.
- Signal range is 3.5...23 mA which means that 3186 is NAMUR NE43 compliant.
- Inputs and outputs are floating and galvanically separated.
- High galvanic isolation of 2.5 kVAC.
- Fast response time < 5 ms.
- Excellent signal/noise ratio > 60 dB.
Mounting / installation
- DIN rail mounting with up to 330 channels per meter.
- Extended operating temperature range from -25...+70°C.
DNV-GL marine certificate
|Operating temperature||-25°C to +70°C|
|Storage temperature||-40°C to +85°C|
|Relative humidity||< 95% RH (non-cond.)|
|Installation in||Pollution degree 2 & measurement / overvoltage cat. II|
|Dimensions (HxWxD)||113 x 6.1 x 115 mm|
|Weight approx.||70 g|
|DIN rail type||DIN EN 60715/35 mm|
|Wire size||0.13 x 2.5 mm2 / AWG 26...12 stranded wire|
|Screw terminal torque||0.5 Nm|
|2...25 Hz||±1.6 mm|
|25...100 Hz||±4 g|
|Supply voltage||6...35 VDC|
|Power dissipation, per channel||
50 mW (3186A)
Vterminal x I (3186B)
|Isolation voltage, test / working||2.5 kVAC / 300 VAC (reinforced)|
|Zone 2 / Div. 2||250 VAC|
|Response time (0...90%, 100...10%)||< 5 ms|
|Signal / noise ratio||> 60 dB|
|Accuracy||Better than 0.05%|
|Cut-off frequency (3 dB)||100 Hz|
|EMC immunity influence||< ±0.5% of span|
|Extended EMC immunity: NAMUR NE21, A criterion, burst||< ±1% of span|
|Measurement range||3.5...23 mA|
|Input to output voltage drop, typ.||2.5 V (3186A)|
|Input voltage drop typ.: Supplied and non-supplied unit||≤ 3 V (3186B)|
|2-wire transmitter supply||3.5...32.5 V|
|Signal range||3.5...23 mA|
|Signal range, input to output||3.8...20.5 mA|
|Output loop current limitation, typ.||24 mA|
|Current output overload, max.||50 mA|
I.S. / Ex marking
|ATEX||II 3 G Ex nA IIC T4 Gc|
|IECEx||Ex nA IIC T4 Gc|
|FMus||Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, AEx nA IIC T4|
|FMca||Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, Ex nA IIC T4|
Observed authority requirements
|ATEX 2014/34/EU||KEMA 10ATEX0147 X|
|FM||FM17US0004X / FM17CA0003X|
|CCOE||P337347/1 (Pending for 3186B)|
|EAC Ex TR-CU 012/2011||RU C-DK.GB08.V.00410 (Pending for 3186B)|
|DNV-GL Marine||V1-7-2 (Pending for 3186B)|