In this project, Delta Ohm HD2013UA tipping bucket rain gauge and HD52.3DP147 ultrasonic anemometer with integrated temperature, humidity, barometric pressure and solar irradiance measurement capabilities were used for weather monitoring in a public garden.

The instruments output standard 4 – 20 mA or MODBUS-RTU signal and are integrated to a building management system (BMS).

In this project, Delta Ohm HD52.3D ultrasonic anemometer was installed on a rooftop for wind speed and wind direction monitoring.

The instrument outputs 4 – 20 mA signals and a Delta Ohm HD35 wireless data logger was used to record the readings.

For this project, OTM provided full installation and data reporting service.

In this project, Delta Ohm LPPYRA03 spectrally flat class C pyranometer was installed on a rooftop for solar irradiance monitoring.

The pyranometer outputs mV signal and a Delta Ohm HD35 wireless data logger was used to record the readings.

For this project, OTM provided full installation and data reporting service.

In this project, the following instruments were integrated to monitor solar radiation, daylight, thermal comfort and weather:

• LPPYRA03 spectrally flat class C pyranometer
• LPPHOT01 indoor lux sensor
• LPPHOT03 outdoor lux sensor
• HD9008TRR temperature & humidity transmitter
• TP875.I globe thermometer
• HD403TS2 omni-directional hot wire airspeed transmitter
• HD52.3D ultrasonic anemometer

All instruments were mounted on tripod. Delta Ohm HD35 wireless data loggers were used to record the readings.

For this project, OTM provided full installation and data reporting service.

In this application, the following instruments were integrated for far infra-red radiation monitoring:

• Delta Ohm PMsense particulate matter transmitter with MODBUS-RTU output
• Delta Ohm HD35EDW-MB wireless data logger supporting MODBUS-RTU output

The system was wired and configured by OTM. Refer to this blog post for more details.

In this application, the following instruments were integrated for weather and air quality monitoring:

• HD52.3DP17 ultrasonic anemeter: for wind speed, wind direction, temperature, humidity and solar irradiance measurement.
• PMsense particulate matter transmitter: for PM1.0, PM2.5 and PM10 measurement
• HD33MT.4 data logger: with 4G connectivity
• Solar panel and tripod

More than 10 such stations were installed in different locations in Singapore. OTM provides integration, installation, and maintenance services. Shown below is an example of the installations.