Ydl-T Thermal Resistance Signal Isolator

     The resistance of the platinum resistance (copper resistance, etc.) is changed with temperature to change the

temperature change into a voltage change, and then DC-isolated to obtain a DC voltage corresponding to the temperature of the measured point completely isolated from the input (temperature sensor). Or DC current output; adopts three-wire platinum (copper) resistance measuring circuit with automatic compensation function.
 

3.1 input:
3.1.1 Input signal: PT100, Cu50, Ni1000 and other thermal resistance signals
3.1.2 Thermal resistance excitation current: ≤1mA
3.1.3 Allow line resistance: ≤1000
3.2 output:
3.2.1 Output signal: 4-20mA; 0-20mA; 0-5V; 0-10V
3.2.2 Output load resistance: RL ≤ 500Ω (when the output is a current signal)
         RL≥1KQ (when the output is a voltage signal)
4.1 Power supply: DC24V±10%
4.2 Current consumption:
      ≤50mA (-in and out, 24V power supply, 20mA output)
      ≤70mA (-in two out, 24V power supply, 20mA output)
      ≤ 100mA (two in two out, 24V power supply, 20mA output)
4.3 over limit alarm:
     Below the lower temperature limit, output 3.8mA, (4-20mA output)
     Above the upper temperature limit, output 20.5mA
4.4 disconnection alarm: output 22mA
4.5 Basic accuracy: 0.1% F.S. 4.6 Temperature drift: 0.005% F.S./°C (-20°C~+55°C)
4.6 Response time: ≤10mS (0-90%> (TYP)
4.7 Dielectric strength: 1500VAC/1min (between input, output, and power) Insulation resistance: ≥100MΩ       (between input, output, and power)
4.8 Operating temperature range: -20~+55°C
4.9 Electromagnetic compatibility: in line with GB/T18268 (IEC61326-1)
4.10 Applicable field devices: two-wire system, three-wire system thermal resistance.
 

 

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