WS-GR03 Gradient Weather Monitoring System

Introduction:This system is a high-precision meteorological monitoring system designed for the measurement of the vertical spatial distribution of various elements, which can directly measure the aver

  • Product Name:WS-GR03 Gradient Weather Monitoring System
  • Model:WS-GR03
  • Country:USA


This system is a high-precision meteorological monitoring system designed for the measurement of the vertical spatial distribution of various elements, which can directly measure the average characteristics of the atmosphere and the characteristics of turbulence. Realize the observation and research of boundary layer energy, radiation, exchange of various substances, damping and disturbance of different underlying surfaces. Select high-precision sensors approved by the World Meteorological Organization, modular structure, simple setup, convenient installation and operation, easy maintenance, strict testing before leaving the factory, safe and reliable, stable operation, and can be left unattended in the wild for a long time.

This system measures meteorological elements of different heights and depths in the air and soil in a vertical direction. In the air, parameters such as wind speed and direction, temperature and humidity, radiation, rainfall, and atmospheric pressure are measured; in the soil, temperature, humidity, salinity, heat flux, etc.

System Features:

  • Suitable for long-term fixed-point monitoring.

  • The sensor has good stability and fast response.

  • Large-capacity storage space, RS232 serial port connection to computer, data transmission software.

  • Flexible configuration, different sensors can be freely matched as needed.

  • Sturdy protective shell: suitable for outdoor installation.

  • Support solar power supply mode to achieve unattended operation.

  • Support GPRS wireless output data.

  • Comply with the standard "Long-term positioning observation method of forest ecosystem GB/T 33027-2016"

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Sensing Element       SHT35 modified by Campbell Scientific

Communication Standard    SDI-12 V1.4 (responds to a subset of commands)

Supply Voltage  7 to 28 Vdc

EMC Compliance Tested and conforms to IEC61326:2013.

Standard Operating Temperature Range     -40° to +70°C

Main Housing Material   UV stable, white PET-P

Electronics Sealing Classification    IP67

Sensor Protection    Outer glass-filled polypropylene cap fitted with a stainless-steel mesh dust filter with nominal pore size of < 30 µm. The sensor element has a PTFE protective film with a filtration efficiency of > 99.99% for particles of 200 nm or larger size.

Sensor Connector  M12, male, 4-pole, A-coded

Cable  Polyurethane sheathed, screened cable, nominal diameter 4.8 mm (0.19 in.)

Field-Replaceable Chip or Recalibrate   Field-replaceable chip

Sensor Cap Diameter      12.5 mm (0.5 in.)

Body Diameter at Connector  18 mm (0.7 in.)

Length       180 mm (7.1 in.) without cable fitted

Sensor Body Weight 50 g (1.8 oz)

Weight       250 g (8.8 oz) with 5 m (16.4 ft) cable

AM16/32B16- or 32-Channel Relay Multiplexer

NOTE-The protection on the reset, clock, and +12 V inputs are provided by 18 V TVS diodes.
PowerUnregulated 9.6 to 16 Vdc
Scan AdvanceOccurs on the leading edge of the clock pulse transition (from below 1.5 V to above 3.3 V)
Minimum Clock Pulse Width1 ms
Maximum Actuation Time for Relay20 ms
Relay OperationBreak before make
Initial Relay Resistance, Closed0.1 ohm
Maximum Switching Current500 mA
(Switching currents greater than 30 mA [occasional 50 mA current is acceptable] will degrade the contact surfaces of the mechanical relays and increase their resistance.This will adversely affect the suitability of these relays to multiplex low voltage signals.Although a relay used in this manner no longer qualifies for low voltage measurement, it continues to be useful for switching currents in excess of 30 mA.)
Maximum Switching Voltage50 Vdc
A voltage divider such as the VDIV10:1 may be needed between the AM16/32B and the data logger to stay within the input limits of the data logger channel.
Minimum Contact Life5 x 107 operations
Maximum Contact Voltage Rating70 V
Maximum Voltage8 Vdc (clock level)
CE Compliance
  • EN 61326:1998

  • EN 55022:1998 Class B

SurgeComplies with IEC61000-4-5, test level 3 (±2 kV, 2 ohm coupling impedance)
Operating Temperature Range
  • -25° to +50°C (standard)

  • -55° to +85°C (extended)

Dimensions23.9 x 10.2 x 4.6 cm (9.4 x 4.0 x 1.8 in.)
Weight~680 g (~1.5 lb)
Air DischargeComplies with IEC61000-4-2, test level 4 (±15 kV).
Contact DischargeComplies with IEC61000-4-2, test level 4 (±8 kV).
Typical Current Drain
Quiescent< 210 µA
  • 6 mA (typical in 2x32 mode)

  • 11 mA (typical in 4x16 mode)

Reset Levels

Inactive< 0.9 V
Active3.3 to 8 V

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Please confirm the system configuration and some key technical specifications with our company before purchasing.