Isodaq Technology is now part of Hydro International.

Rain Gauges

Our range of recording raingauges has been selected to complement our Hydro-Logic™ Weather Logger, offering several products to suit a variety of rainfall logging applications and budgets.

Our low-cost tipping-bucket gauges are manufactured in the UK by Casella and Environmental Measurements and all these gauges connect to any Hydro-Logic™ data logger using our digital bounce-free, pulse counter-timer technology, for operation as a raingauge logger. For organisations concerned with minimising the cost of maintenance and therefore the cost of ownership in the long-term, we recommend weighing-principle gauges.

Weighing gauges can operate unattended for many months and in many applications annual maintenance is all that is required, making these devices ideal partners for use with Hydro-Logic™ Timeview, which can be configured to trigger high-intensity alarms to provide early warning of flooding or CSO spills.


  1. Casella Tipping Bucket Raingauge

    Casella Tipping Bucket Raingauge

    • Proven tipping bucket mechanism
    • 10's of thousands of units sold worldwide
    • Requires regular cleaning for best results
    • Optionally available with dynamic calibration
    • Suitable for telemetry applications
    • Connects to any ISODAQ logger or telemetry logger

  2. EM SBS Tipping Bucket Raingauge

    EM SBS Tipping Bucket Raingauge

    • Aerodynamic tipping bucket raingauge
    • Conforms to British Standard design specification
    • Internal bubble level - for accurate installation
    • Choice of 0.1 or 0.2mm tip size
    • Contact closure digital output
    • Optional internal heater
    • Connects to all ISODAQ loggers and telemetry loggers

  3. EM ARG100 Tipping Bucket raingauge

    EM ARG100 Tipping Bucket Raingauge

    • Low-cost, accurate tipping-bucket mechanism
    • Aerodynamic gauge design for maximum catch
    • UV-resistant plastic collector unit
    • Available with either 0.20 or 0.25mm tip sensitivity
    • Contact closure digital output
    • Connects to any ISODAQ logger or telemetry logger

  4. Vaisala WXT520 Weather Transmitter

    Vaisala WXT520 Raincap sensor

    • RAINCAP piezoelecrtric rainfall sesnor
    • Minimal maintenance requirements
    • Doubles as mini weather station
    • Rainfall intensity, wind speed/direction, T, humidity and pressure
    • SDI12 interface for use with any ISODAQ logger
    • Optional heater and bird spike deterent.