Isolation Amplifier


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The VARIO isolation amplifier AD-TV 30 GL serves to galvanically separate, convert and amplify DC current signals and voltage signals (0/4...20 mA and 0/2...10V DC). The signal sizes are adjustable at the front. The output signal follows the input size linear and is independent of the connected load up to a limiting value. Input, output and the supply voltage are galvanically separated from each other with a high degree of insulation. A highly efficient, integrated electronic wide-range power pack enables operation with 20...253 V DC or 50...253 V AC. There is no possibility of cross polarity of the connection voltage. A high packing density is achieved due to its narrow build.


Conversion, load amplification and galvanic decoupling of impressed DC current signals and voltage signals.


  Business data

catalog number AD-TV 30 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
Voltage range AC 50 ... 253 V AC, 50/60 Hz
Nominal voltage AC 230 V AC
Voltage range DC 20 ... 253 V DC
Nominal voltage DC 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