LLAC4 4-Channel Low-Level AC-Conversion Module
Expands Capacity
Increases number of signals datalogger can monitor
meteorología aplicaciones agua aplicaciones energía aplicaciones flujo gas y turbulencia aplicaciones infraestructuras aplicaciones suelo aplicaciones

Resumen

The LLAC4 is a small peripheral that increases the number of low-level ac signals a datalogger can monitor. The LLAC4 is often used to measure up to four anemometers, and it is especially useful for wind profiling applications.

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Ventajas y características

  • Ideal para aplicaciones que requieran un número elevado de cnales de pulsos, pero pocos puertos de control, como en prospecciones viento

Imágenes

Descripción detallada

The LLAC4 enables four datalogger control ports to emulate pulse-counting channels by converting the low-level ac signals to logic levels read by the control ports.

Minimum AC Input Voltage versus Output Square Wave Frequency

Input Sine Wave
(mV RMS)		 Output Range (Hz)
20 1.0 to 20
200 0.5 to 200
2000 0.3 to 10,000
5000 0.3 to 20,000

Especificaciones

Function Increases the number of low-level ac signals that a data logger can monitor.
Number of Channels 4
Power 0.1 mA (@ 12 Vdc)
Input Hysteresis 16 mV (@ 1 Hz)
AC Coupling Removal of DC Offset ≤ ±0.5 V
Maximum AC Input Voltage ±20 V
Cable Length 0.6 m (2 ft)
Dimensions
  • 5.4 x 8.0 x 2.5 cm (2.1 x 3.1 x 1.0 in.) without base mounting flanges
  • 5.4 x 11.2 x 2.5 cm (2.1 x 4.5 x 1.0 in.) with base mounting flanges
Weight 92 g (3.2 oz)

Compatibilidad

Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.

Dataloggers

Producto Compatible Nota
CR1000 (retired)
CR1000X
CR200X (retired) To be compatible with the CR200X, the low-level ac signals must not exceed 1 kHz.
CR216X (retired) To be compatible with the CR216X, the low-level ac signals must not exceed 1 kHz.
CR300 (retired)
CR3000 (retired)
CR310
CR350
CR5000 (retired)
CR6
CR800 (retired)
CR850 (retired)
CR9000X (retired) It is necessary to use the CR9071E module with the CR9000X and LLAC4.

Sensores

Producto Compatible Nota
03002
034B
05103
05103-45-L (retired)
05106
05305-L

Miscelaneo

Producto Compatible Nota
014A
21X (retired)
CR10 (retired)
CR10X (retired)
CR23X (retired)
CR500 (retired)
CR510 (retired)
CR9000 (retired)

Información de compatibilidad adicional

Data Logger Considerations

The LLAC4 works only with data loggers whose control ports can accept high frequency pulses. The CR23X has four control ports that can be used (5, 6, 7, and 8); the CR200X-series control ports are compatible but are limited to inputs of 1 kHz.

Sensors

The LLAC4 typically measures anemometers. Compatible anemometers include the Wind Monitors, 03002 Wind Sentry Set, and 03101 Wind Sentry Anemometer. (The 014A Anemometer and 034B Windset are not compatible.) The LLAC4 can also measure other sensors that output pulse counting signals.

Descargas

LLAC4 Program Example (2 KB) 21-05-2024

Description: Includes two programs, one for a CR1000X and one for a CR350. Both programs measure three different wind speed sensors that produce low-level AC signals. The sensors used are the RM Young 05103 and RM Young 05305 propeller-type anemometers, as well as the RM Young 03101 cup anemometer.