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Sensors - Capricorn FLX Weather Station

Modular Sensor Options

Standard Capricorn FLX includes the Control Module with internal barometric pressure sensor, wind speed and direction, temperature and humidity sensor housed in a solar radiation shield. A custom sensor package can be built using any sensor combination including up to four temperature sensors and two solar radiation sensors.

Features:

  • Low power consumption (10 mA at 12 VDC)
  • RS-232 or RS-485 communication to monitoring options
  • Easy to attach parameter sensor channels
  • Two additional general-purpose channels
Capricorn FLX Control Module

Utilizing MEMS technology, the on-board barometric pressure sensor provides accurate pressure data with full temperature compensation. The sensor outputs are digitized by a high-resolution 24-bit analog to digital converter.

Accuracy: ± 0.03 in. Hg (1 hPa)

Range: 14.8 to 32.5 in. Hg (500 to 1100 hPa)

Resolution: 0.001 in. Hg (0.03 hPa)


Standard with one ambient temperature sensor with 50 feet of cable. Up to four temperature sensors can be connected with a maximum of 400 feet combined cable length. These digital, semiconductor-type probes all connect to a single port, reducing susceptibility to noise interference, reducing cost, and increasing accuracy. The sensors are calibrated at the factory.

Options include: Soil/Water Temperature, Panel Temperature, and Ambient Temperature Sensors

Accuracy: ± 0.9°F from +14° to 185°F (±0.5°C from -10° to 85°C), ± 3.6°F from -67° to 257°F (±2.0°C from -55° to 125°C)

Resolution: 0.01°F


The Capricorn FLX features a durable aluminum/stainless steel wind direction and speed sensor. The sensor offers 360-degree wind direction resolution and high accuracy.

  • Wind direction in 2-degree resolution
  • Wind speed displays as low as 1 mph
  • Quick-disconnect cable connector for easy sensor removal

For installations subject to extreme weather conditions, a heated wind sensor option is available.

Wind Speed Wind Direction
Accuracy: ± 0.25 mph from 0 to 23 mph, ± 1% from 24 to 160 mph Resolution: 2 degrees
Range: 0 to 160 mph Accuracy: ± 4 degrees
Resolution:1 mph Type: Precision Potentiometer
Starting threshold: 0.9 mph
Type: Sealed read switch
Wind Sensors

This capacitive relative humidity sensor is compact and easy to use. It can be easily installed in a self-aspirating radiation shield for protection from the sun and rain. This sensor offers long-term stability with minimal drift. Because the sensor is a capacitive device, it will not be affected by surface contamination in unclean environments. Since the sensor element is socketed and laser trimmed it can be easily replaced in the field without any additional calibration. The relative humidity sensor comes with a standard 50-foot cable and a quick disconnect connector.

Type: Capacitance

Accuracy: ± 3% (or better) from 10 to 90% RH at 68° F

Temperature Effect: less than <±1.5% RH from 14° F to 140° F

Stability: ±2% RH over 2 years

Reporting Resolution: 1% RH

Range: 0 to 100%

Relative Humidity

The optional tipping bucket electric rain gauge is composed of a complex spun collector funnel with a knife edge that diverts the water to a tipping bucket mechanism. For each tip, a magnet causes an electronic pulse that is recorded. The rainfall sensor is completely automatic - spent water drains out of the bottom of the housing, hence, the instrument requires no servicing.

Accuracy: ±1% at 2 in./hr or less

Resolution: 0.01 inch

Heated rain gauge is available.

Tipping Bucket Rain Gauge

The pyranometer or solar radiation sensor is calibrated to measure the shortwave radiation reaching the Earth's surface, measured in Watts per square meter.

Self-cleaning dome-shaped head prevents water accumulation.

Sensor head is potted solid to prevent internal condensation in humid environments.

ISO 9060:2018 Class C (previously known as second class)
Range: 0 to 2000 W mˉ²
Calibration Uncertainty: ± 5 %
Measurement Repeatability: Less than 1 %
Non-stability (Long-term Drift): Less than 2 % per year
Non-linearity: Less than 1 %
Response Time: Less than 1 ms
Field of View: 180˚
Spectral Range: 360 to 1120 nm (wavelengths where response is 10 % of maximum)
Directional (Cosine) Response: ± 5 % at 75˚ zenith angle
Temperature Response: 0.04 ± 0.04 % per C
Operating Environment: -40 to 70 C; 0 to 100 % relative humidity

Includes leveling plate, mounting bracket, and 50-foot cable.

Solar Radiation

Control Module
Dimensions: 5.8" L x 4.5" W x 2.4" H
Weight: 0.4 lbs
Input Voltage: 8-24VDC
Current Consumption: 10mA @ 12VDC

Temperature
Accuracy:
± 0.9°F from +14° to 185°F (±0.5°C from -10° to 85°C)
± 3.6°F from -67° to 257°F (±2.0°C from -55° to 125°C)
Resolution: 0.01°F

Rainfall
Accuracy: ±1% at 2 in./hr. or less
Resolution: 0.01 inch

Relative Humidity
Type: Capacitance
Accuracy: ± 3% (or better) from 10 to 90% RH at 68° F
Temperature Effect: less than <±1.5% RH from 14° F to 140° F
Stability: : ±2% RH over 2 years
Reporting Resolution: 1% RH
Range: 0 to 100%

Barometric Pressure
Accuracy: ± 0.03 in. Hg (1 hPa)
Range: 14.8 to 32.5 in. Hg (500 to 1100 hPa)
Resolution: 0.0001 in. Hg (0.01 hPa)

Solar Radiation
ISO 9060:2018 Class C (previously known as second class)
Range: 0 to 2000 W mˉ²
Calibration Uncertainty: ± 5 %
Measurement Repeatability: Less than 1 %
Non-stability (Long-term Drift): Less than 2 % per year
Non-linearity: Less than 1 %
Response Time: Less than 1 ms
Field of View: 180˚
Spectral Range: 360 to 1120 nm (wavelengths where response is 10 % of maximum)
Directional (Cosine) Response: ± 5 % at 75˚ zenith angle
Temperature Response: 0.04 ± 0.04 % per C
Operating Environment: -40 to 70 C; 0 to 100 % relative humidity

Wind Direction
Resolution: 2 degrees
Range: 0 to 360 degrees
Accuracy: ± 4 degrees

Wind Speed
Accuracy: ± 0.25 mph from 0 to 23 mph
± 1% from 24 to 160 mph
Range: 0 to 160 mph
Resolution:1 mph


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