Isolated Transmitters
mA input, Isolated Vdc Output or Vdc input with Isolated mA Output

PXTX-4900

PASSEZ VOTRE COMMANDE

Voltage Input with Current Output or Current Input with Voltage Output
1500 Volts RMS of CMV Isolation
Factory Calibrated for Accuracy of ±0.1%
Operates from 115 Vac 50/60 Hz or 230 Vac
Rugged Epoxy Encapsulated Design

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The OMEGA™ PXTX-4900 and PXTX-4901 transmitters isolate a 4-20 mA current loop from the 0 to +10 Vdc signal and the power line. These units are ideal for eliminating ground loops and common mode signals. In the PXTX-4901, which converts 4-20 mA to 0 to 10 Vdc, the input resistance is less than 50 Ohms, generating less than 1 Volt drop at 20 mA loop current. The PXTX-4900 converts a 0 to 10 Vdc to a 4-20 mA output signal. For both models, the 400 Hz frequency response provides a settling time of less than 0.003 seconds to 0.1%, which prevents signal degradation. Both models are completely encapsu-lated for use in rugged environments. They are similarly protected against shock and vibration for years of reliable and accurate operation. All connections are easily made to conveniently located barrier strips.

SPECIFICATIONS
PXTX-4900
    Input: 0 to 10 Vdc
    Output: 4 to 20 mA
    Loop Resistance: Up to 1000
    Loop Compliance: 20 V maximum
PXTX-4901
    Input: 4 to 20 mA
    Output: 0 to 10 Vdc
    Load Resistance: 2000 Ω minimum
    Load Capacitance: 0.01 µF
Isolation: 1500 Vrms 50/60 Hz Capacitance Line to Input or Output: 30 pF
Input to Output: 80 pF
Accuracy: ±0.1% of span maximum
Nonlinearity: ±0.05% of span Temperature Stability 0 to 55°C:
    Span: ±35 ppm/°C
    Zero: ±50 ppm/°C of span
Input Resistance:
    PXTX-4900: >10 MΩ
    PXTX-4901: 47.6 ±0.3% Ω
Input Current Maximum:
    PXTX-4900: 7 mA
    PXTX-4901: 70 mA
Response: 3 dB bandwidth 400 Hz typical
Rise Time: 10 to 90% 0.9 ms typical
Settling Time: To 0.1% < than 3 ms
Noise: 0.1 Hz to 400 Hz <0.01% rms of span
CCMR: 100 dB
Power Requirements: 105 to 125 Vac 50/60 Hz, 3.2 VA (230 Vac optional)
Operating Temp: -20 to 70°C (-4 to 158°F)
Storage Temp: -20 to 85°C (-4 to 184°F)
Size: 95.25 L x 50.80 W x 72.90 mm H (3.75 x 2 x 2.87")
Weight: 540 g (19 oz)

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PXTX-4900

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High accuracy isolated transmitter with 0 to 10 Vdc input and 4 to 20 mA output (115 Vac)

PXTX-4901

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High accuracy isolated transmitter with 4 to 20 mA input and 10 Vdc output (115 vac)

230 VAC Powered Models

PXTX-4900-230

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High accuracy isolated transmitter with 0 to 10 Vdc input and 4 to 20 mA output (230 Vac)

PXTX-4901-230

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High accuracy isolated transmitter with 4 to 20 mA input and 10 Vdc output (230 vac)

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Isolated TransmittersmA input, Isolated Vdc Output or Vdc input with Isolated mA Output

PXTX-4900

Isolated Transmitters
mA input, Isolated Vdc Output or Vdc input with Isolated mA Output