The Smith Meter Model PA-6 preamplifier fits the standard explosion-proof junction box on Smith Meter turbine meters and D transmitters (PD meters). It converts the low-voltage sinusoidal pickup-coil signal into a square-wave pulse for transmission runs over 2,000 ft or for instruments needing a fast edge-triggered input. Outputs at 0.5x, 1x and 2x pulse multiplication and jumper-selectable gain let it match Smith Meter presets, flow computers and third-party receivers.
Key specifications
Power: 8-29 VDC; 40-120 mA max operating current
Input: Sinusoidal, 24 Vp-p max, to 10 kHz; 10 kOhm minimum impedance
Sensitivity (gain strap): 70 mVp-p (x50), 150 mVp-p (x25, factory), 750 mVp-p (x1)
Output: Square wave: about 11 Vp-p (12 VDC supply) or 23 Vp-p (24 VDC supply) no-load; 300 mA sink / 80 mA source
Pulse multiplication: x0.5 and x1 outputs (to 5,000 Hz input); x2 output (to 2,500 Hz input)
Cable distance: Three-wire shielded: 2,000 ft (#20 AWG), 3,000 ft (#18), 5,000 ft (#16)
Environment: -58 to 158 °F; 0-99% humidity
Mounting: Fits the standard Smith Meter explosion-proof Class I Group D turbine meter box
How to specify / order
Meter it will serve: Smith Meter turbine meter (model/size) or D transmitter on a PD meter
Quantity per meter (one per pickup coil; two for dual-pulse security)
Receiving instrument and its input voltage limit (output exceeds 12 VDC when supplied above 12 VDC)
Required output: x0.5, x1 or x2 pulse multiplication
Cable length and wire gauge to the receiving instrument
Whether a replacement for an existing PA-6 or a new installation (FMS can supply the junction box and pickup coil)
The SS02012 bulletin has no model code; specify the items above when ordering.
Pricing and lead time are quoted per configuration. Send the model code (or your application details), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter bulletin SS02012; confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.