Campbell-scientific CS125 Present Weather Sensor Instrukcja Użytkownika Pobierz pdf (Strona 11)

User Guide

3

2. Technical specification

Minimum

Value

Nominal

Value

Maximum

Value

Visibility characteristics

Reported Visibility (metric) 12 metres - 32,000

metres

Reported Visibility (imperial) 39 feet - 104,985

feet

Visibility accuracy up to 10,000m - +/-10%

-

Visibility accuracy up to 20,000m - +/-20%

-

Optical characteristics

LED centre wavelength - 850nm

-

LED spectral bandwidth - +/-35nm

-

Pulse characteristics

Light pulse rate - 1KHz

-

3. Electrical specification

Minimum

Value

Nominal

Value

Maximum

Value

Main power supply for DSP and dew heaters

Power supply, +12V connection (DC

only)

9V

12V

28V

(1)

Current consumption sampling

continuously with dew heaters active

(at 12V DC)

-

200mA

248mA

Current consumption sampling

continuously with dew heaters

disabled (at 12V DC)

-

110mA

151mA

Current consumption without any

sampling occurring and dew heaters

disabled (at 12V DC)

-

21mA

30mA

Active power consumption with dew

heaters and RS232 communications

interface active

(2,3)

(at 12V DC)

-

200mA

250mA

Hood heater power supply

Hood heater voltage (AC or DC)

-

24V

(3)

30V

(4)

Hood heater wattage (at 24V AC or

DC)

-

60W

(5)

-

RS232 Communications

RS232 input threshold Low

0.8V

1.5V

-

RS232 input threshold High

-

2.0V

2.4V

RS232 input absolute maximum

-15V

-

+15V

RS232 input resistance

12K

-

-

RS232 output voltage low

-

-

0.4V

Weather characteristics

Precipitation Sensitivity

-

0.05 mm/h

-

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