Measuring Converter

Pt100 Converter
AD-MV 50 GL; AD-MV 54 GL

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The measuring value amplifier AD-MV 50 GL (for 2/3 lead technology) or AD-MV 54 GL (for 4-lead technology only) converts the measuring signal issued from a resistance generator Pt 100 (according to DIN IEC 751) to an impressed output signal (i.e. 0-20 mA or similar). The output characteristic curve is issued temperature linear. When using the 3-lead switching lead, resistance up to 100 Ohms are compensated. In 2-lead switching a subsequent zero alignment and full alignment via trim potentiometers at the front is possible. The analogue output signal is galvanically separated from the supply voltage. A highly efficient, integrated electronic wide-range power pack (ALLPOWER) enables operation with 20-253V DC and 50-253V AC. There is no possibility of cross polarity of the connection voltage. A high packing density is achieved due to its narrow build.


Temperature measuring with Pt 100 temperature transmitter for continuous transformation of temperature variables to analogue signals.


  Specific characteristics

  • Pt 100 conversion into standard signals
  • current or voltage output
  • Wide range power supply
  • Conversion of 2, 3 and 4-wire technology possible
  •   Business data

    Order number
    AD-MV 50 GL for 2 - and 3-wire connection
    AD-MV 54 GL for 4-wire connection



      Technical specifications

    Pt100 input
    Max. measuring range -200 ... 800 C1)
    Connection method 2, 3 or 4-wire
    Output current
    Output range 0 ... 20 mA, 4 ... 20 mA1)
    Max. burden 400 Ohm
    Residual ripple 25 Ass
    Output voltage
    Output range 0 ... 10 V, 2 ... 10 V 1)
    Min. burden 1 kOhm
    Residual ripple 50 mVss
    Voltage range AC 50 ... 253 V AC, 50/60 Hz
    Nominal voltage AC 230 VAC
    Voltage range DC 20 ... 253 V DC
    Nominal voltage DC 24 V DC
    Power consumption AC / DC 1,8 VA / 1W
    Transmission behaviour
    Accuracy < 0,2 %
    Temperature influence 100 ppm/K
    Response time ~ 50 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 2)
    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
    Signal / supply unit 3 kV (1 min.)
    Protection circuits
    Input electrical surge protection
    Output electrical surge protection
    Power supply electrical surge and reverse current protection
    1) Signal range according to costumer data.
    2) During electromagnetic disturbance minor changes in output signal are possible.

      Block and wiring diagram