Automatic Weather Station (AWS) Archives -

Compact Weather Station (KDSR-4601)

The KDSR-4601 Compact Weather Station from Komoline Aerospace is a fully autonomous system designed for various applications, including meteorology and agriculture. It integrates intelligence with real-time clocks, recording memory, and measures six essential parameters: temperature, humidity, wind speed, wind direction, atmospheric pressure, and rainfall. Ideal for cost-effective environmental monitoring, it offers easy installation and operation.

Specifications(KDSR-4601)	Rain	Temperature	Relative Humidity	Wind Speed	Wind Direction	Pressure
Type of Sensor	Tipping Bucket	PRT	Capacitive	NoContact Infra Red encoder	Hall Effect Non contact Encoder	Ceramic MEMS
Measurement Range, Upper Limit	–	+85 C	+100 %	+65 ms-1	360⁰	1200 hPa
Measurement Range, Lower Limit	–	-40 C	0 %	0 ms^-1	0⁰	100 hPa
Threshold	–	–	–	0.35 ms^-1	0.4 ms^-1	–
Measurement Accuracy (typ, @25 C )	1 %	0.1⁰ C	2 %	0.1 ms^-1	3⁰	0.2 hPa
Measurement & Recording Resolution	0.25 mm	0.01⁰ C	0.1 %	0.01 ms^-1	0.1⁰	0.01 hPa
Averaging Aperture	–	1s to 100s (User Settable)

Specifications	Conditions	Min	Typ	Max	Units
Recording Specifications
Type of Recording		Schedule
Type of Recording		Schedule
Depth of Recording	Expandable	70,000	Records
Scheduled Recording Interval Range	Any interval @ 1s Res	1m		24hr
Scheduled Recording Start Time		Settable (Any Time of Day)
Recordable Parameters	Time and Date, All Measured Parameters, Battery Voltage
Accuracy of Captive RTC			2	–	Min/Year
Resolution of Captive RTC		1	s
Physical
Mass			< 2.0	–	kg
Diameter, Body			< 100	–	mm
Diameter, Sweep			< 200	–	mm
Length			< 400	–	mm
Enclosure Materials	Engineering Plastics, Acetal, SS316L
Deployment
Medium		Atmospheric
Installation		Outdoor Continuous
Installation		Outdoor Continuous
Operating Temperature		-40		+85	^OC
Cable Length Drive Capability		250m			m
Nominal Internal Battery Life	Hourly Recording, 20s or less Aperture Time	>5	Years
Nominal Internal Battery Life	Every Minute Recording, 5s or less Aperture Time	>1	Years
Power Source		Alkaline Battery Pack
External Interfaces
Digital Interface Type	Serial Digital (UART), 9600 – 115200 Baud
Protocols	KomBus1.0, Modbus RTU, Modbus (ASCII)
Operator Interfaces Supported	PC/Laptop, Dedicated HHT / Display Panel
Accessories	USB Adapter, Instrument Setup, Data Downloading and Visualization Software, Calibration Software, Readout Options, Telemetry Options, Radio-to RS485/RS232 Adapters, Installation Accessories including Tripod Masts
Variants
KDSR-4601-D00 (-KB1/MBA/MBR)	RS485/RS232 Connectivity (KomBus1.0/Modbus(ASCII)/Modbus(RTU)
Notes
1. Excessive or continuous user interaction may impact power autonomy. 2. Some accessories mentioned above may need to be ordered separately. 3. Generic support software necessary for installation and operation of the system is part of delivery and available free to all buyers including updates and newer versions. 4. Cable drive length capability is the system’s capacity to drive the length and does not imply extra cable as a deliverable.

Atmospheric Pressure Sensor (KDS-021)

The KDS-021 Atmospheric Pressure Sensor from Komoline utilizes advanced ceramic MEMS technology for precise measurement of atmospheric pressure. It is designed with very low power consumption, it converts raw data into engineering units internally, and supports reporting in both QMH and QFE formats, making it ideal for reliable environmental monitoring applications.

Output Option	Interface	Leve	Baud Rate	Protocols	Max Cable Length	Power Supply
3V Digital (D00)	UART	3V Digita	9600-115.2k	KomBus/Modbus	5 to 10m	4-28V (<1mA)
RS485 (D01)	UART	RS485	9600-115.2k	KomBus/Modbus	250m	4-28V (<1.5mA)
RS232 & Analog (D02)	UART	RS232	9600-115.2k	KomBus/Modbus	10m	4-28V (<1.5mA)
Voltage Output 1 (A01)	Voltage	0-1 to 0-3V	–	–	10 to 20m	4-30V (1.5mA)
Current Loop (4-20mA) (A02)	Current	4-20mA	–	–	250m	4-40V (4-20mA)
Voltage Output 2 (A03)	Voltage	0-3 to 0-10V	–	–	20 to 40m	4-30V (<2.5mA)
Radio 1 (R01)	Radio	433 MHz	9600-115.2k	Please See User Manual for Details	Please See User Manual for Details	Internally Lithium Powered
Radio 2 (R02)	Radio	930 MHz	9600-115.2k
Radio 3 (R03)	Radio	2400 MHz	9600-115.2k
Calibration
Calibration Facility	KAL Sensor Calibration Facility
Traceability	IMD (India) / NPL (India) / NIST (USA)
Accessories
Included with Sensor	Mounting Accessories, Readout and Setup Software (for Windows), Mating Connector (Wired Versions), 10m Sensor Cable
To Be Separately Ordered	Extra Cable, Readout. Connectivity Adaptor for USB, RS232, Radio etc.
Notes. 1.Accuracy is specified with one minute or more averaging, at 25°C, after full calibration. 2. Output units can be customized if required. Please contact factory. 3. Response Time is the time the sensor takes to capture 90% or more of a step change with the averaging set to minimum. 4. Temperature measurement accuracy about 3 deg. C. 5. Analog output offered can be set by the user to cover any interval within the sensor’s range. For example 0 -1V output can be set to measure from 950 to 1100 hPa. 6. Does not include current sunk by the host system out of the sensor’s output lines and is valid for digital operation only. 7. Supply Voltage must exceed the required voltage compliance by 1 Volt at least.

Automatic Weather Station (AWS)

Compact Weather Station (KDSR-4601)

Atmospheric Pressure Sensor (KDS-021)

Komoline Aerospace Limited

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