Spectrum-controls 140 MPM 204 00sc Manual de usuario descargar pdf (Pagina 8)

Quantum Series 140 MPM 204 00sc

Meter Input ModesMeter Input Modes

Meter Input Modes

The flow meter mode is compatible with a variable reluctance AC input, which counts AC zero crossing signals

from 50 mV to 75V AC peak.

The module accepts +5 to +45 V gating (enable) pulses for standard meter proving applications. This module

does perform pulse interpolation for meter proving allowing short run prover verification.

The module also has external inhibit/trigger lines using a 5V discrete pulse to regulate activity.

Module FeaturesModule Features

Module Features

The Quantum counter module features:

• Four input channels

• Four redundant input channels for pulse fidelity checking

(API Level B, phase, sequence, count, frequency monitoring)

• Four external enable inputs

• Double Chronometry Pulse Interpolation which allows 4 decimal places of resolution.

• Four gating (enable) pulses for meter proving

• Input filter frequency 50 kHz max., AC or DC

• Maximum count value 65 K or 16 M

• Programmable scaling, K, M, and R factors

• Channel update time 1 ms/channel

• Rate output with programmable timeout allowing low frequency measurement

• Meter logic level state

• Programmable counter alarm flags and rate operating modes

• Two software-selectable filters: 30 or 50 kHz digital, 15 kHz analog

• Channel-to-backplane isolation 1000VDC

• Channel-to-channel isolation 0 V

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Spectrum-controls 140 MPM 204 00sc Manual de usuario Pagina 8