Bộ thu thập và lưu trữ dữ liệu 3 kênh dây rung Campbell Scientific CRVW3-NE

Thương hiệu: Campbell Scientific | Tình trạng: Còn hàng
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CRVW3-NE 3-Channel Vibrating-Wire Datalogger without Enclosure

Gọi 0904251826 để được trợ giúp

Bộ thu thập và lưu trữ dữ liệu 3 kênh dây rung Campbell Scientific CRVW3-NE

Overview

The CRVW3-NE is a 3-channel vibrating-wire datalogger. It is designed to be an independent datalogger, or a reliable component in a larger data acquisition system. The CRVW3-NE has multiple communication options and a power regulator for easy solar panel and battery connection.

The CRVW3-NE and the CRVW3 are similar products that share the same electronic components. The main difference between them is that the CRVW3-NE allows a user to select the enclosure and battery, whereas the CRVW3 includes an environmental enclosure and battery as a complete system.

Benefits and Features

  • Reads and stores data from one to three vibrating-wire sensors

  • Charge regulator included for solar panel connection

  • Simple configuration interface

  • Compatible with many existing Campbell Scientific data acquisition networks

  • PakBus router/radio capabilities

  • User-selectable battery and enclosure options

Detailed Description

The CRVW3-NE uses vibrating-wire spectral-analysis technology (VSPECT™) to provide the best measurement possible for vibrating-wire sensors. VSPECT™ observes the incoming sensor signal, performs a Fourier transform and a spectral analysis, and determines the sensors’ frequency by identifying the strongest signal in the acceptable range while filtering out environmental and electrical noise.

The CRVW3-NE provides the following data: the resonant sensor frequency, thermistor resistance for temperature calculation, and diagnostic values to help determine the validity of the frequency measurement.

Note: The CRVW3-NE requires Device Configuration Utility (DevConfig) v 2.10 or later. When radio options are used, the CRVW3-NE requires LoggerNet v 4.3 or later.

Specifications

-NOTE-

The base -NA option is CE approved, but the -RF451, -RF407, -RF412, and -RF427 options are not CE approved.

Processor

ST ARM CORTEX-M4 (32-bit with hardware FPU, running at 144 MHz)

Data Storage

16 MB serial flash, up to 420,000 records (single channel), up to 160,000 records (3 channels)

Clock Accuracy

±3 min. per year

Measurement Interval Range

1 s to 1 day

USB Micro B

Direct connect to PC (supplies power for configuration and data collection), 2.0 full speed, 12 Mbps

Configuration

Software configurable, no programming required

Operating Temperature Range

-40° to +70°C

Compliance

RoHS

Warranty

One year against defects in materials and workmanship

Dimensions

18.4 x 12.7 x 4.5 cm (7.25 x 5.0 x 1.75 in.) for CRVW3-NE

Weight

0.36 kg (0.8 lb)

Power

Charge Terminal

16 to 28 Vdc (from solar panel or dc power converter). Typical applications use 10 to 20 W panels.

Battery Terminal

Sealed, rechargeable, lead-acid batteries. Typical applications use 7, 12, and 24 Ah rechargeable batteries.

Measurements

Channel Count

3 vibrating wire (VW) and 3 thermistor/RTD (temperature) measurements

Measurement Speed

1 s per sensor (VW and temperature)

Measurements - Vibrating-Wire

Measurement Excitation Options

2 V (±1 V), 5 V (±2.5 V),12 V (±6 V)

Measurement (Frequency) Resolution

0.001 Hz RMS (-40° to +70°C)

Time-series Basic Resolution

24-bit ADC

Measurement Accuracy

+/-0.006% of reading (-20° to +70°C)

Measurement Method

VSPECT (Spectral Analysis), U.S. Patent No. 7,779,690, includes diagnostic data

Measurements - Temperature (Resistance)

-NOTE-

Thermistor or RTD resistance can be scaled to Temperature (Deg C) per manufacturer specifications. The resulting temperature can be used as a correction factor for the sensor’s output.

Measurement Method

Half-bridge ratiometric, 24-bit ADC, built-in completion resistor 4.99 kΩ 0.1%

Resolution

0.01 Ω RMS (-40° to +70°C)

Accuracy

±0.15% of reading (-40° to +70°C)

-RF451 Option

Internal Radio Description

5 to 1000 mW, user selectable, 902 to 928 MHz license-free band, frequency hopping spread-spectrum radio

FCC ID

KNYAMM0921TT

IC

2329B-FGR2

Radio Repeater

Devices with the -RF451 option can be set up as a radio repeater.

-RF407 Option

Internal Radio Description

5 to 250 mW, user selectable; 902 to 928 MHz license-free band, frequency hopping spread-spectrum radio

Radio Repeater

Devices with the -RF407 option can be set up as a radio repeater.

Certifications

  • MCQ-XB900HP (FCC ID)

  • 1846A-XB900HP (Industry Canada [IC])

  • RCPDIXB15-0672-A2 (Mexico IF)

-RF412 Option

Internal Radio Description

5 to 250 mW, user selectable; 915 to 928 MHz license-free band, frequency hopping spread-spectrum radio

FCC ID

MCQ-XB900HP

IC

1846A-XB900HP

Radio Repeater

Devices with the -RF412 option can be set up as a radio repeater.

-RF422 Option

Internal Radio Description

2 to 25 mW, user selectable; 863 to 870 MHz license-free band, frequency hopping spread-spectrum radio

EU Conformity

View the EU Declaration of Conformity in the Documents section of the web page.

-RF427 Option

-NOTE-

To be released for use in Brazil.

Documents

 Brochures

 Manuals

 Technical Papers

 Compliance

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