MicroMet Group
Cutting Edge Technology
Automatic Weather Stations
Introduction
MicroMet Automatic Weather Station use state-of-theart techniques in :
Sensor Technology
Signal Processing – FPGA/ RISC processor
Embedded Software
Computer Applications
Telemetry & Data Communication
Mechanical Designs
MicroMet
MicroMet’s Automatic
Weather Station Family
General purpose AWS
Airport AWS
Agri - met AWS
Hydro – met AWS
EIA – AWS
Data Collection Platforms
Ocean Buoys
MicroMet
MicroMet’s AWS System
Configuration
MicroMet
MicroMet Smart Sensor
Concept
Sensor Element
DAC
Signal
Conditioning
Microprocessor
AVR - Mega
Analog Output
Digital Output
SDI – 12 Output
RS 232C Output
 Microprocessor :
Accept data from Signal Conditioning unit
Convert to digital signal
Compute data acc. To TF Characteristics to
normalise output as a linear function
Generate 4 outputs – Analog , Digital , SDI-12 &
RS232C
 Smart Sensor Software :
Feeds in set up data
Feeds in sensor coefficients
Sensor ID information
MicroMet
MicroMet AWS Smart Sensors
A) Meteorological Sensors:
SDA
Wind Speed Sensor
Wind Direction Sensor
Wind Speed & Direction
Sensor
Solid – State Wind Sensor
Air Pressure Sensor
Air Temperature Sensor
Relative Humidity Sensor
Temperature & Humidity
Sensor
Dew Point Sensor
Rainfall Sensor (Tipping
Bucket)
Rainfall Sensor (Drop
Detector)
Solar Radiation Sensor
Net Radiation Sensor
MicroMet
Sunshine Dur Sensor
Albedo Sensor
Quantum Sensor
Cloud Height Sensor
Visibility Sensor
RVR Sensor
Solar Radiation Sensor
Net Radiation Sensor
Sunshine Dur Sensor
Albedo Sensor
Quantum Sensor
Cloud Height Sensor
Visibility Sensor
RVR Sensor
Evaporation Sensor
Snow Depth Sensor
Snow Temperature Sensor
Soil Moisture Sensor
Soil Temperature Sensor
Soil Heat Flux Sensor
Day & Night Switch Sensor
Leaf Wetness, Fog, Mist Dew
Detector
Rainfall Conductivity
Surface Temperature
UV Sensor
Wireless Temp Sensor
Wireless Pressure Sensor
Wireless Humidity Sensor
B) Environmental Sensors:
Carbon Monoxide Sensor
Carbon Dioxide Sensor
Nitrogen Dioxide Sensor
Nitrogen Oxides Sensor
Sulphur Dioxide Sensor
Hydro-Carbon Sensor
Poly Hydro-Carbon Sensor
Oxygen Sensor
MicroMet
Ozone Sensor
Ammonia Sensor
Chlorine Sensor
Air Quality Sensor
Dust Particle Sensor
Radon Sensor
Noise Sensor
Light Sensor
C) Hydrological Sensors:
Water Level Pressure Sensor
Water Level Ultrasonic Sensor
Water Level Float Sensor
Water Level Bubbler Sensor
Water Flow Sensor
Water Temperature Sensor
Water pH Sensor
Water Conductivity Sensor
MicroMet
Water Dissolved Oxygen Sensor
Water Salinity Sensor
Water Salinity/Temp Sensor
Water Turbidity Sensor
Water Specific Ion Sensor
Water – ORP / Redox Sensor
Water shaft Endocers
Total Dissolved Solid
D) Oceanographic Sensors:
Current Sensor
Wave Sensor
Wave & Current Sensor
Tide Sensor
Altimeter Sensor
Sound Velocity Sensor
CTD Sensor
STD Sensor
MicroMet
MicroMet Wind Speed
Sensors
MicroMet
Suitable for all applications of wind speed recording
Gives wind speed and wind gust readings from the
same sensor
Compatible with all Automatic Weather Monitoring
Systems
Continuous operation for long term computer logging
Range from 0 – 70 m / sec
High-resolution of 0.01 m / sec
Uses stainless steel anemometer cups for long life
Sealed ball bearings used for low friction thereby
achieving very low threshold speed
Uses magnetic coupling for long life in harsh
conditions
Microprocessor based control circuit for signal
conditioning
Programmable calibration coefficients built-in each
sensor
Choice of outputs : Analog Voltage/Current, Digital
count, SDI-12 or RS232C / RS422 serial outputs
Choice of Analog outputs from 0-2.5V, 0-5V, 0-10V, 420mA
User friendly setup program for SDI-12 configuration
and setup
Rugged and reliable ; Needs no maintenance
MicroMet Wind Direction
Sensors
Suitable for all applications of wind direction
recording
Compatible with all Automatic Weather
Monitoring and Environment Monitoring Systems
Uses a specially designed potentiometric
transducer for sensing wind direction
Continuous operation for long term computer
logging
Microcontroller based signal processing circuit
Range from 0 – 360 degrees with high accuracy
Mechanically coupled using a purpose built collar
Optimally damped to avoid flutter in light winds
Programmable calibration coefficients
High-resolution of 0.5 degree
Choice of outputs : Analog Voltage/Current,
Digital frequency or SDI-12
Choice of Analog outputs from 0-2.5V, 0-5V, 010V, 4-20mA
User friendly setup program for SDI-12
configuration and setup
Rugged and reliable. Needs no maintenance
MicroMet
MicroMet Wind Speed &
Direction Sensors
Suitable for all applications of wind
speed & direction recording
Gives wind speed and wind direction
readings from the same sensor
Compatible with all Automatic Weather
Monitoring Systems
Continuous operation for long term
computer logging
Uses magnetic coupling for long life in
harsh conditions
Programmable calibration co-efficients
Choice of outputs : Analog
Voltage/Current, Digital freq, SDI-12 or
RS232C/RS422 serial ports
Choice of Analog outputs from 0-2.5V,
0-5V, 0-10V, 4-20mA
Microcontroller based control circuit
User friendly setup program for SDI-12
configuration and setup
Wind Speed Sensor has range from 070 m/sec and high-resolution of 0.01
m/sec
Wind Direction Sensor has range from
0-360 degrees and high-resolution of
0.5 degrees
Rugged and reliable. Needs no
maintenance
MicroMet
MicroMet Solid-State
Wind Sensors
Suitable for Wind-speed and Wind direction
recording
Compatible with all Automatic Weather Stations &
Environment Monitoring Systems
Uses Solid state Sensor ; no moving parts
Can be used in any position
Ideal for moving platforms and snow bound areas
Choice of output ; analog, digital , SDI-12 and
RS232C
High resolution and Accuracy
Rugged Construction
MicroMet
MicroMet Helipad Wind
Direction Sensor - Young
High performance Wind Speed & Direction
Sensor
Suitable for use in Automatic Weather Stations
and Wind Monitoring Systems
Proprietary Propeller Vane sensing device
Low aspect ratio provides accurate wind sensing
in fluctuating conditions
Uses precision grade, stainless steel bearings
for long life
Simple and corrosion-resistant construction
make it ideal for a wide range of wind measuring
applications
Choice of Voltage and Current outputs to suit all
data loggers
Rugged and reliable. Needs no maintenance
Manufactured by R.M. Young Company
MicroMet
MicroMet Pressure
Sensors
MicroMet
Suitable for all applications of atmospheric
pressure recording
Compatible with all Automatic Weather
Monitoring and Environment Monitoring
Systems
Continuous operation for long term
computer logging
Uses silicon chip as the sensing elementacts like an aneroid pressure sensor for
working in a vast range of operating
temperatures
User programmable range ; Can be set
anywhere between 400 – 1100 mb
High-resolution of 0.2 mb
Programmable calibration co-efficients
Choice of outputs : Analog Voltage/Current,
Digital frequency, SDI-12 or RS232C/RS422
serial ports
Choice of Analog outputs from 0-2.5V, 0-5V,
0-10V, 4-20mA
Micro controller based signal processing
circuit
User friendly setup program for SDI-12
configuration and setup
Rugged and reliable. Needs no maintenance
MicroMet Temperature
Sensors
MicroMet
Suitable for all applications of temperature
recording
Compatible with all Automatic Weather
Monitoring and Environment Monitoring
Systems
Continuous operation for long term
computer logging
Pt1000 used as a sensing element for high
linearity
Range from -50 to +50eg. C as standard.
Other ranges optional. Range can be set
anywhere between -100 degC to + 100 degC.
Uses specially designed radiation screen to
avoid errors due to direct radiation
Programmable calibration coefficients
High-resolution of 0.1 degC
High accuracy of +/- 0.2 degC
Choice of outputs : Analog Voltage/Current,
Digital frequency, SDI-12 or RS232C
Choice of Analog outputs from 0-2.5V, 0-5V,
0-10V, 4-20mA
Microcontroller based signal processing
circuit
User friendly setup program for SDI-12
configuration and setup
Rugged and reliable. Needs no maintenance
MicroMet Relative
Humidity Sensors
Suitable for all applications of relative humidity
recording
Compatible with all Automatic Weather
Monitoring and Environment Monitoring
Systems
Continuous operation for long term computer
logging
Based on polymer film capacitance RH sensing
element
Programmable calibration co-efficients
Range from 0 – 100% RH over full operating
range
High-resolution of 0.1% RH
Accuracy achieved of 2% RH over max range
Uses purpose built radiation shield to avoid
errors due to direct radiation
Choice of outputs : Analog Voltage/Current,
Digital frequency, SDI-12 or RS232C
Choice of Analog outputs from
0-2.5V, 0-5V, 0-10V, 4-20mA
Microcontroller based signal processing circuit
User friendly setup program for SDI-12
configuration and setup
MicroMet
MicroMet Temperature/
Humidity Sensors
Integrated sensor for temperature and
relative humidity
Suitable for all applications of temperature
& humidity recording
Compatible with all Automatic Weather
Monitoring Systems
Continuous operation for long term
computer logging
Programmable calibration co-efficients
Choice of outputs: Analog Voltage/Current,
Digital frequency or SDI-12
Choice of Analog outputs from 0-2.5V, 0-5V,
0-10V, 4-20mA
Microcontroller based control circuit
User friendly setup program for SDI-12
configuration and setup
Temperature Sensor has range from -500C
to +500C degrees and high-resolution of
0.10 degrees
Relative Humidity Sensor has range from
0-100% and high-resolution of 0.2%
Rugged and reliable. Needs no
maintenance
MicroMet
MicroMet Temperature/
RH Proble - Young
Integrated Temperature &
Humidity Sensor on a single
probe
The Multi-Plate Radiation
Shield protects temperature
and relative humidity
sensors from errorproducing solar radiation
and precipitation
Manufactured by R.M
Young Company
MicroMet
MicroMet Dew Point
Sensors
Smart sensor for dew point measurements
Suitable for all applications of dew point
recording
Compatible with all Automatic Weather Monitoring
and Environment Monitoring Systems
Uses a PT1000 temperature and a capacitive
humidity sensor in an integrated probe
Dew Point computed internally in a
microprocessor
Uses purpose built radiation shield to avoid errors
due to direct sunlight and shield the sensors from
rain
Continuous operation for long term computer
logging
Programmable calibration co-efficients
Choice of outputs: Analog Voltage/Current, Digital
Count or
SDI-12
Choice of Analog outputs from 0-2.5V, 0-5V, 0-10V,
4-20mA
Microcontroller based signal processing circuit
User friendly setup program for SDI-12
configuration and setup
Rugged and reliable. Needs no maintenance
MicroMet
MicroMet Rainfall Sensors
Tipping Bucket
Interfaces to virtually all data
acquisition systems
Knife-edge collector optimizes
rainfall catch
Exceptional splash-out protection
reduces wind errors
Easy installation and maintenance
Over 30 years in production
Lightweight spun Aluminum Exterior
Anodized aluminum collector for
weather resistance
Integral Bubble Level
MicroMet
MicroMet Rainfall Sensors
DD
Suitable for all applications of rainfall recording
Compatible with all Automatic Weather
Monitoring and Environment Monitoring Systems
Uses micro Load Cell as a sensing element
Purpose built wick for regulating the water drops
Microprocessor circuitry detects drops with high
resolution to determine the rate of precipitation
Can measure precipitation up to 400 mm/hour
Unlimited range: normal 45 mm per interval; 7
mm per minute max
High-resolution of 0.1 mm
Continuous operation for long term computer
logging
Programmable calibration co-efficients
Choice of outputs : Analog Voltage/Current,
Digital Count or
SDI-12
Choice of Analog outputs from 0-2.5V, 0-5V, 010V, 4-20mA
User friendly setup program for SDI-12
configuration and setup
Small, rugged & reliable. Needs little maintenance
MicroMet
MicroMet Data Loggers
Configurations available
Data Logger with Display/ Keypad
Data Logger W/o Display/ Keypad
Channel Options:
Both Models available in following
option :
4 – Channel
8 – Channel
16 – Channel
32 – Channel
MicroMet
MicroMet Data Logger
Smart–Card technology allows it to be configured for all
types of applications
Available in 4, 8, 16 or 32 channels
2 x 16 VFD display and 4 x 6 keypad built-in for system
setup and data display
Channels can be short-cycled by the user
Provision for pre-programming & instant data readings
Removable Flash-card memory for data storage up to 128
MB
Selectable fast mode of operation; logging upto 1 msec per
channel
Pre-programmable setup parameters like sampling
intervals, input channels etc.
AC or DC operation, Solar or Wind Generator based PSU
options
Very low power consumption Ideal for field use on battery
Compatible with a choice of telemetry links including
Cable, Radio, Tele-modem, GSM Cellular or UHF Satellite
Ideal for use in outdoor systems like Weather stations,
Environment Monitoring Systems, RTUs or Field Loggers
Ruggedized for field use
MicroMet
MicroMet Data Logger
Field Programming Unit (FPU) SW
User – friendly Software for Setting up
the Data Logger
Can be used by inexperienced operators
Data can be Display in real-time or in
post processing mode
Display include Text, Data & Y/t
Comprehensive Set-Up functions to
configure the Data Logger
Any number of Set Ups can be stored
Can download Memory Module Data
Can upload & Download setup data from
Memory modules
MicroMet
MicroMet Memory Modules
Available in 2 configurations
Flash Memory Sizes
• 08MB
• 16MB
• 32MB
• 64MB
• 128MB
Flash Memory + SRAM Sizes
• 08MB+4MB
• 16MB+4MB
• 32MB+4MB
• 64MB+4MB
MicroMet
SRAM Options allow data storing with very
high speeds up to 10 m sec/sample.
MicroMet Memory Card Reader
Can download Memory Module data
remotely without use of Data Logger
Small, portable Unit
Can be used with all MicroMet
Memory Modules
MicroMet
MicroMet DLG GPS Option
Plug-in option : can be used
in all MicroMet Data Loggers
GPS logs Lat , Long and
Altitude data with each
dataset
GPS timing signal (1pps)
updates RTC every 15/30
minutes for all time accurate
RTC
Uses a miniature , low power,
12-Channel GPS Receiver
Engine
MicroMet
MicroMet AWS – Power
Supply Options
3 PSU Options :
Rechargeable Battery
Solar Panel with
Charger
Hybrid Solar – Wind
System :
MicroMet
MicroMet AWS
PSU-Rechargeable Battery Option :
In-built NiMH Battery : Easy
to replace
High Capacity , 12V , 2.2 Ah
Microprocessor based
external Charger
Can run AWS for 24 hours
without Charge
MicroMet
MicroMet AWS
PSU – Solar Panel with Charger :
Choice of battery depends on user
power Budget
Uses 20/30 Watt Solar Panel
Microprocessor based charge
controller , using chemistryindependent Controller device
Uses microchip status indicator
interface to the Microprocessor
Status indicated on serial port to
main processor on interrupt
MicroMet
MicroMet AWS
PSU - Hybrid Solar – Wind System :
Choice of battery depends on
user power budget
Battery charged from both solar
energy and wind energy
Microprocessor based dual solar
wind charge controller
Solar charge controller uses
chemistry independent charge
device
Uses high efficiency portable
wind turbine
Uses 20/30 Watt solar panel
MicroMet
MicroMet AWS
NEMA Enclosure:
Conform to NEMA standards for NEMA-4 enclosures
Conforms to IP standards for IP-67 enclosures
Watertight and Dust proof for use in harsh
environment
Ideal for outdoor equipment protection
Used in Automatic Weather Stations, Automatic
Pollution Monitoring Stations, DCP Systems, RTU’s &
Automatic Monitoring Systems
Has long-life neoprene seals all around to eliminate
water ingress
Mounting accessories available for MicroMet Data
Loggers and Sensors
Purpose built Battery Bracket built in for batteries of
all sizes required in the Automatic Monitoring Systems
Has cable glands for routing interconnection cables
Double lock built in with individual keys for extra
safety
Rugged and reliable. Fit for external use
MicroMet
MicroMet AWS :
TOWER Options:
Portable Tower
MicroMet
Telescopic
Tower
Guyed Mast
Tower
Self Supporting
Tower
MicroMet AWS :
Guyed Mast Tower:
MicroMet
Available in 4 configurations,
Portable, Telescopic, Guy-mast & Selfsupporting
Suitable for AWS & Remote
Monitoring Stations
Rugged construction for use in harsh
environment
Precisely engineered to near
perfection
Accurately fabricated for greater
stability
Corrosion resistant with 20u
anodizing
Lightening protectors built-in
Can withstand winds up to 250
Km/hour
Accessories & Mounts available for all
types of sensors
Easy to install & dismantle
MicroMet AWS :
Sensors Arm Options:
Sensor Arms
2 sensors
4 sensors
6 sensors
8 sensors
10 sensors
Sensor Boom
1 Sensor
Sensor Bracket
1 Sensor
MicroMet
MicroMet AWS:
Telemetry Options:
Cable
Extended Cable
Radio : VHF, UHF
GSM Cellular
DECT
Tele-modem / Speech
Modem
Satellite Modem
MicroMet
MicroMet AWS :
Cable Telemetry Options:
Direct RS232C cable
link for distances upto 50 meters
Direct RS485 cable
link for distances upto 1 km
Cable Modems used
at both transmitter &
receiver end for
distances up-to > 15
km
MicroMet
MicroMet AWS :
Radio Telemetry Options:
MicroMet
Choice of VHF or UHF
Radio
Low power LOS Radio for
distances upto 25 km
Transparent Radio link for
data transmission
applications
Compatible with all
MicroMet AWS &
Monitoring Systems
Microprocessor based
signal processing
MicroMet AWS :
Telemodem/Speech Modem Telemetry Options:
Compatible with telephone
networks all over the world
Microprocessor based
signal processing
Digital Speech synthesis for
Speech facility
Uses universal socket
Modem
TCP/IP connectivity built-in
MicroMet
MicroMet AWS :
DECT Telemetry Options:
Uses OEM DECT
Modem
Useful for short
distances where
cable-laying is not
possible
Low power
License-free
operation
MicroMet
MicroMet AWS :
Satellite Telemetry Options:
Purpose-built Satellite modem
compatible with world-wide satellites
e.g. Meteosat, INSAT, GOES, GMS,
Argos, SCD-I
Uses high gain Yagi Antenna
Sat-modem uses DDS technology
Digitally synthesized Tx frequency
Variable power output: user settable
from 1W to 20W
Microprocessor based data handling:
data signatures for all satellites stored
MicroMet
MicroMet AWS :
Outdoor Display Option:
Large Characters , visible from distance
OLED Technology
Direct interface with the Data Logger ; PC not
required
Can be configured with customer name
MicroMet
MicroMet Group
Cutting Edge Technology