Isolation Amplifier

Isolation Amplifier With Nominal Value Selector

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The VARIO-isolation amplifier AD-TV 32 GL serves the galvanic separation, conversion and amplification of DC current and voltage signals (0/4-20 mA and 0/2-10 V DC). The signal dimensions are adjustable at the front. The starting and end values can here be adjusted independent of each other. Input, output and the supply voltage are separate from each other with high insulation. An integral electronic wide range power pack with a high degree of effectiveness allows operation in a supply range of 20...253 V DC or 50...253 V AC. Additionally, a nominal value can be specified via switch at the front at the output. The input measuring signal is decoupled and without influence during this. The nominal value at the output, which can be activated and adjusted via a potentiometer at the front.


Conversion, burden amplification and galvanic decoupling of active DC-current and voltage signals with additional manual / automatic operation via a nominal value specification, which can be activated.


  Specific characteristics

  • Front panel switch for switching between manual and automatic operation
  • Value setting for manual operation by front-face potentiometer
  •   Business data

    catalog number AD-TV 32 GL



      Technical specifications

    Input current
    Measuring range 0/4 ... 20 mA
    Input resistance 85 Ohm
    Input voltage
    Measuring range 0/2 ... 10 V
    Input resistance > 100 kOhm
    Output current
    Output range 0/4 ... 20 mA
    Max. burden 500 Ohm
    Residual ripple 50 ľAss
    Output voltage
    Output range 0/2 ... 10 V
    Min. burden > 10 kOhm
    Residual ripple 50 mVss
    Setpoint setting
    Front mounted potentiometer 0 ... 100 %
    Voltage range AC 50 ... 253 V AC, 50/60 Hz
    Voltage range DC 20 ... 253 V DC
    Nominal voltage AC / DC 230 V AC / 24 V DC
    Power consumption AC / DC 2,3 VA / 1W
    Transmission behaviour
    Basic accuracy < 0,2 %
    Temperature influence 100 ppm/K
    Response time ~ 20 ms
    Dimensions (WxHxD) 18x78x103 mm
    Type of protection IP 20
    Connection method screw clamp
    Terminals, wire cross section 2,5 mm˛ flex wire / 4 mm˛ one wire
    Bolting torque terminals 0,5 Nm
    Weight ~ 100 g
    Manner of fastening 35 mm DIN rail 35mm
    Environmental conditions
    Ambient temperature 0 ... 50 °C
    Storage and transport -10 ... 70 °C (no thawing)
    Product family standard EN 61326 1)
    Emitted interference EN 55011, CISPR11 Cl. B
    Electrical safety requirements
    Product family standard EN 61010-1
    Overvoltage category II
    Pollution degree 2
    Galvanic isolation, test voltages
    Input / output 3,75 kV, 50 Hz (1 min.)
    Signal / supply unit 4 kV, 50 Hz (1 min.)
    Protection circuits
    Input electrical surge protection
    Output electrical surge protection
    Power supply electrical surge and reverse current protection
    1) During checking, slight signal deviations are possible.

      Block and wiring diagram