We are the distributor of Delta Ohm wireless & web data loggers in Singapore. Delta Ohm instruments are manufactured in Italy and widely used in Singapore, for critical research and industry applications.
Advantages
Wireless
No coding required
Expandable network, from 1 channel to hundreds
Most sensor types supported
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Application 9: on-site solar irradiance & daylight illuminance monitoring system
A monitoring system was integrated and configured by OTM for on-site solar irradiance and daylight illuminance monitoring. The following Delta Ohm products were used:
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.
Application 11: LoRaWan data logging system for long distance transmission
In this application, a LoRaWan based wireless data logging system was deployed by OTM. The system consists of:
10 × input channels (including temperature sensors, pyranometers, and heat flux sensors)
The system was fully integrated and configured by OTM. OTM also provides 1.5 years of maintenance and data collection services.
The instruments are distributed in various locations of two buildings. Shown below are two important instruments of the system (left: a LoRaWan data logger; right: the LoRaWan gateway).
LR35WH (outdoor type general-purpose data logger)
LoRaWan Gateway (indoor type, with 4G connectivity)
Application 12: CO2 level monitoring with HD50 web data logger
In this application, an HD50 web data logger with an integrated CO2 probe was configured by OTM for CO2 level monitoring in an indoor space. The objective is to follow the advisory by NEA and BCA (document 1, document 2) to use CO2 level as a proxy to check the ventilation adequacy in an indoor space.
The end user just needed to do some simple last-step mechanical mounting. OTM performed all configurations before delivery. The end users need not to install and learn any software, as they can conveniently access the monitoring results from a cloud portal with a browser. Shown below are some results plotted in the cloud portal:
Application 13: Wind measurement with ultrasonic anemometer and wireless data logger
In this application, the following instruments were used:
HD53LS.S 2-axis ultrasonic anemometer with MODBUS-RTU output
HD35EDW-MB wireless data logger with MODBUS-RTU input
HD35APD USB dongle type base unit for wireless data loggers
OTM also supplied a 2-meter-long stainless steel pole for instrument mounting. The instruments were wired and configured by OTM prior to the delivery. The last step mechanical mounting was done by the end-user with our on-site technical assistance.
Price: the price is indicative of a typical product and excludes items to be ordered separately (e.g. probes, cables, accessories, or calibration services). please contact us for an official quotation.
Lead time: 4-6 weeks
GST: Additional GST is applicable for Singapore customers
No additional charges for international customers
Payment terms: COD (Singapore customers) or advance (international customers)
Payment by cheque (Singapore customers only), bank transfer or Paypal (credit card)
Shipping: we will cover the shipping cost to your doorstep (limited to ASEAN countries)
We use Fedex for international shipping and the customer needs to cover custom taxes (shipping terms: FOB Singapore)