Spectrum Controls 140 MPM 204 00sc - Manual (Page 8)

Quantum Series 140 MPM 204 00sc
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Meter Input Modes Meter Input Modes Meter Input Modes Meter 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 Features Module Features Module Features Module Features Module Features
The Quantum counter module features:
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Four input channels
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Four redundant input channels for pulse fidelity checking
(API Level B, phase, sequence, count, frequency monitoring)
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Four external enable inputs
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Double Chronometry Pulse Interpolation which allows 4 decimal places of resolution.
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Four gating (enable) pulses for meter proving
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Input filter frequency 50 kHz max., AC or DC
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Maximum count value 65 K or 16 M
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Programmable scaling, K, M, and R factors
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Channel update time 1 ms/channel
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Rate output with programmable timeout allowing low frequency measurement
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Meter logic level state
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Programmable counter alarm flags and rate operating modes
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Two software-selectable filters: 30 or 50 kHz digital, 15 kHz analog
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Channel-to-backplane isolation 1000VDC
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Channel-to-channel isolation 0 V