PL400-C Rain Gauge 400cm2 Collection Surface (Output: RS485/ModBus)


Nesa srl


Output value: 0.2mm per pulse

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The Sensor measures: Rain (rain gauge)
Output Signal: RS485
Power Supply: 10÷30Vdc


Sensor in A Class, according to UNI11452:2012 for the measurement of precipitation with collection surface of 400cm2, realized in aluminum alloy with anodizing treatment for protection against salt and oxidizing agents. According to WMO norms for environmental monitoring.

Measurement system with knife blade support for tilting bucket in stainless steel with a special system to reduce friction, for ensuring high accuracy over the entire measuring range. A particular system of testing and calibration guarantees the functionality of the instrument for long time.


Rain gauge in accordance to WMO norms Class A according to UNI 11452:2012. Collecting area 400cm2, made of anodized anticorodal
aluminum and white painted, with stainless steel measuring system (tilting bucket) Out: RS485/ModBus. With flange for mounting on
poles ømax 59/80mm. Report of Calibration (Also available with cable and support)


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MCS Signal Conditioning Module

Single channel module for conditioning digital and analog electrical signals. Fully programmable for binding input/output with the USB interface available as an option. The full data sheet is available at this address. main features:

  • Programmable input signals: Pt100, thermopiles, Voltages up to 2Vdc, Current 0÷20mA or 4÷20mA, frequency up to 1000Hz, Counter for pulses (1ms min)
  • • Programmable Output signals: voltage 0÷2Vdc; Current 0÷20mA or 4÷20mA Serial RS485 (command line); Modbus RS485
  • • Resolution: 18 bits with over 262,000 points
  • • Operating conditions: -40 ÷ +80°C
  • • DIN rail mounting
  • • Power supply: 10÷30Vdc (typ. 4mA@12 Vdc)
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NPI shielded cable. With IP68 waterproof connector for connecting to the sensor, and terminal sleeves for insertion into the terminal blocks. Available in any length.

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SPL1 Rain gauge support

Rain gauge support in anodized aluminum, useful height = 1000mm (also available at 2m) for ground installation. Diameter 80mm, weight about 6kg. Complete with stainless steel screws, mounting base on the ground. The pole is equipped with holes for cables.

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SPL2 Ground Rain gauge support

Round plate support for Nesa's rain gauge, permit to fix the instrument directly on to the pavement or flat surface (h = 12cm)

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Standard cable

Shielded multi-core cable for indoor/outdoor use, suitable for hot and cold climates.
With IP68 waterproof connector for connecting the sensor, and PS2 plug connector for direct connection to the data logger or with terminal sleeves for insertion into the terminal blocks. Our cables are standard for most our sensors.
Available in different lengths starting from 1m.

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WINDBREAKS – (Alter Shield)

Ring with windbreaks elements to minimize the effects of wind on measurements of rain. Made of aluminum, with light structure and easy to mount, consisting of a ring with a diameter of about 100cm and from preformed elements that are free to oscillate at the wind, while offering a protection to the mouth of the rain gauge. It installs directly to the base of the rain gauge and is adjustable in height.

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