Laurel-electronics LT SERIES TRANSMITTERS PULSE INPUTS Bedienungsanleitung PDF herunterladen (Seite 38)

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DUAL CHANNEL SIGNAL CONDITIONER

Crystal Accuracy at 25ºC....................................................................................................±2 ppm

Crystal Tempco...................................................................................................±1 ppm/degree C

Long-Term Drift of Crystal.........................................................................................±5 ppm/year

Signal Types .................... AC, NPN, PNP transistor outputs, contact closures, magnetic pickups

Max Pulse Rate ........................................................1 MHz on Channel A, 250 kHz on Channel B

Channel Isolation ..................................................Channel A & channel B share common ground

Low Pass Filter ................................................................................ 250 Hz or 30kHz (selectable)

Hysteresis..................................................................................... 15 mV to 2.2 Vp-p (selectable)

Trigger level ....................................................................................±15 mV to ±1.7 V (selectable)

Debounce Circuitry ...................................................................................0, 3, 50 ms (selectable)

V-TO-F PROCESS RECEIVER & TOTALIZER SIGNAL CONDITIONER

Signal Levels.......................................................................0-1 mA, 4-20 mA, 0-10 V (selectable)

Accuracy at 25ºC............................................................................................................. ±0.025%

Span Tempco........................................................................................... ±0.003% of reading /°C

Zero Tempco.......................................................................................... ±0.003% of full scale /°C

QUADRATURE SIGNAL CONDITIONER

Signal Type .......................................................................Differential or single-ended quadrature

Transitions Monitored................................................................................................. x1, x2 or x4

Max Pulse Rate........................................................ 250 kHz at x1, 125 kHz at x2, 62.5 kHz at x4

Maximum Differential Signal Amplitude...................................................................................14V

Conversion Technique for Rate.........................................................................................1/period

Conversion Time for Rate ................................................ Gate time + 30 ms + 0-2 signal periods

Time Before Zero Output for Rate......................................................0 to 199.99 sec (selectable)

Zero Wait Time for Rate.....................................................................0 to 199.99 sec (selectable)

Output & Display Update Rate ................................................................Same as conversion rate

Time Base Accuracy for Rate........................................................................Calibrated to ±2 ppm

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Laurel-electronics LT SERIES TRANSMITTERS PULSE INPUTS Bedienungsanleitung Seite 38