ST106 Pre-Amplifier

ST106 Pre-amplifier

ST106 Pre-amplifier

The ST106 is a modern turbine meter pre-amplifier that is electrically compatible with the older Spectra-Tek F106 and IS106. Designed to convert the low voltage sinusoidal signal from a flow meter picking coil into a square wave, it can then transmit to a flow computer up to 1km.

We also provide an ATEX certified, flameproof enclosure to house either ST106 or F106 pre-amps. These will replace the obsolete H27 enclosures.

The more modern pre-amp design also supports these output options:

  • 2-wire connect pulse
  • 3-wire voltage pulse
  • Open collector output
  • 2-wire differential output

Additionally, when used with 869M, S500, S600 or S600+ flow computers, the pre-amp can detect and provide alarms. It can detect circuit breaks between the pre-amp and coil, or the flow computer.

Key Features

Key features of the ST106 include fidelity and pulse security. The standards IP252/76, ISO6551 and API CHS all describe five methods of pulse security designated A to E:

  • Level A: Dual pulses, continuously compared for frequency and phase and automatic connections
  • Level B: Dual pulses continuously compared for frequency and phase. The A pulse is used for totalisation and the B pulse for comparison
  • Level C: Dual pulse. Numerical comparison of pulse trains automatically at specified intervals. The A pulse train is used for totalisation and the B pulse train for comparison
  • Level D: Single Pulse. Manual comparison at specified intervals between totalisation and secondary readout
  • Level E: Single pulse relies on correctly installed equipment only

Contact us for more information about the ST106.

Downloads

ST106 specification
See also: F106 preamp

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