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PA Preamplifier

Brand: TechnipFMC
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PA-11 Preamplifier

The Smith Meter Model PA-11 Preamplifier is designed to be a replacement for the Waugh PA-11 preamplifier.

It can be used with Smith Meter Turbine Meters or can be field mounted.

It is used to convert a low voltage sinusoidal signal to a square wave pulse form that can be used to increase the transmission distance of the pulse or convert the pulse form for instruments that require a high speed, edged-triggered input.

The preamplifier has also been designed with a jumper-selectable gain that can be used to either increase or decrease the sensitivity of the unit to fit the needs of the application.

The preamplifier has the capacity to operate with either two or three wires. On the two-wire system, the output signal and power are carried on the same two wires.

PA-6 Preamplifier

The Smith Meter Model PA-6 Preamplifier is designed to be used with the Smith Meter Turbine Meters and D Transmitters (on PD Meters) to convert the low voltage sinusoidal signal to a square wave pulse form that can be used to increase the transmission distance of the pulse or convert the pulse form for instruments that require a highspeed, edge-triggered input.

The preamplifier has also been designed with a jumper-selectable gain that can be used to either increase or decrease the sensitivity of the unit to fit the needs of the application.
Features
  • PA-11 Preamplifier
    • Two-wire connection from preamplifier to receiver
    • Low susceptibility to EMI/RFI interference
    • Jumper selectable gain (1, 25, 50)
    • Explosion-proof mounting on turbine meters
  • PA-6 Preamplifier
    • Explosion-proof mounting on the turbine meter
    • 8–29 VDC input power
    • Low susceptibility to EMI/RFI interference
    • Pulse output multiplication (0.5, 1, or 2 times)
    • Jumper-selectable gain (1, 25, 50)
    • Simple installation
    • Allows greater distance between meter and flow computer.
PA-11 Preamplifier

The Smith Meter Model PA-11 Preamplifier is designed to be a replacement for the Waugh PA-11 preamplifier.

It can be used with Smith Meter Turbine Meters or can be field mounted.

It is used to convert a low voltage sinusoidal signal to a square wave pulse form that can be used to increase the transmission distance of the pulse or convert the pulse form for instruments that require a high speed, edged-triggered input.

The preamplifier has also been designed with a jumper-selectable gain that can be used to either increase or decrease the sensitivity of the unit to fit the needs of the application.

The preamplifier has the capacity to operate with either two or three wires. On the two-wire system, the output signal and power are carried on the same two wires.

PA-6 Preamplifier

The Smith Meter Model PA-6 Preamplifier is designed to be used with the Smith Meter Turbine Meters and D Transmitters (on PD Meters) to convert the low voltage sinusoidal signal to a square wave pulse form that can be used to increase the transmission distance of the pulse or convert the pulse form for instruments that require a highspeed, edge-triggered input.

The preamplifier has also been designed with a jumper-selectable gain that can be used to either increase or decrease the sensitivity of the unit to fit the needs of the application.
Features
  • PA-11 Preamplifier
    • Two-wire connection from preamplifier to receiver
    • Low susceptibility to EMI/RFI interference
    • Jumper selectable gain (1, 25, 50)
    • Explosion-proof mounting on turbine meters
  • PA-6 Preamplifier
    • Explosion-proof mounting on the turbine meter
    • 8–29 VDC input power
    • Low susceptibility to EMI/RFI interference
    • Pulse output multiplication (0.5, 1, or 2 times)
    • Jumper-selectable gain (1, 25, 50)
    • Simple installation
    • Allows greater distance between meter and flow computer.
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Specifications

Brand

Electrical Inputs

  • DC Power: 8 to 29 Vdc ± 1.0 Vdc at preamplifier
  • Note: Must use a Nominal 24 Vdc Input Power Supplywhen using a two-wire system

Input Current

  • Maximum Operating Current: 40 mA @ 8 Vdc, 50 mA @ 12 Vdc, 120 mA @ 29 Vdc
  • Quiescent Current: 10 mA @ 8 Vdc, 15 mA @ 12 Vdc, 20 mA @ 29 Vdc

Input Sensitivity

  • 70 mVp-p @ 25° C and 20 Hz (Gain Strap x 50)
  • 150 mVp-p @ 25° C and 20 Hz (Gain Strap x 25)
  • 750 mV @ 25° C and 20 Hz (No Gain Strap x 1)

Input Signal

  • 2-wire and 3-wire modes: Sinusoidal, no DC offset, 20 Vp-p maximum, 5 kHz maximum
  • Sinusoidal, no DC offset, 24 Vp-p maximum, 10 kHz maximum

Input Impedance

  • 10 kΩ minimum @ 20 Hz

Temperature

  • -40° F to 158° F (-40° C to 70° C)
  • -58° F to 158° F (-50° C to 70° C)

Humidity

  • 0 to 99 % (Condensation is acceptable if it is not conductive and terminals are kept clean)
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