Senseca

HD2016 Weighing Rain Gauge

Weight-based rain gauge with load cell technology for accurate precipitation monitoring.

Rainfall resolution 0.001 mm and accuracy ±0.2 mm
RS485 Modbus-RTU, SDI-12 and isolated voltage-free pulse output
Automatic 3000 cc reservoir discharge and optional heating for snow and ice protection (HD2016R)

Quantity

Overview

The Senseca HD2016 is a weight-based rain gauge designed for accurate precipitation monitoring. It measures collected rainfall using a load cell beneath a 400 cm² collection reservoir, providing total rainfall, partial rainfall and average rainfall rates over the last minute and last hour. It offers a resolution of 0.001 mm and an accuracy of ±0.2 mm.

Designed for long-term outdoor monitoring, the HD2016 features corrosion-resistant materials and an automatic discharge system for its 3000 cc reservoir. A retention valve helps prevent data loss during discharge. It supports RS485 communication with Modbus-RTU or ASCII proprietary protocol, SDI-12 and an isolated voltage-free pulse output. The heated HD2016R version operates from -20…+70 °C, with heating activated below +4 °C to help prevent snow and ice formation.

Typical applications

Rainfall and precipitation measurement
Meteorological and weather monitoring stations
Continuous outdoor rainfall monitoring
Precipitation monitoring in cold and snowy environments (HD2016R)

Key Features

Weight-based rainfall measurement using a load cell
400 cm² rainfall collection area
Measurement resolution of 0.001 mm and accuracy of ±0.2 mm
Automatic discharge of the 3000 cc collection reservoir
Retention valve to help prevent data loss during reservoir discharge
RS485 communication with Modbus-RTU or ASCII proprietary protocol
SDI-12 digital communication interface (version 1.3)
Isolated voltage-free normally open pulse output
Non-volatile memory for rainfall data retention during power failure
Built-in self-diagnostic system for operational monitoring
Optional heating for snow and ice protection (HD2016R), with an operating temperature range of -20…+70 °C and heating activated below +4 °C

Benefits

Provides accurate and detailed rainfall data for environmental monitoring
Supports continuous precipitation monitoring while minimising data loss during reservoir discharge
Simplifies integration with existing environmental monitoring and data acquisition systems
Preserves recorded rainfall data during power failures
Enables precipitation monitoring in cold and snowy environments with the heated HD2016R version
Facilitates identification of instrument malfunctions through built-in self-diagnostics

Specifications

Measurement Specifications
Measuring principle	Weight-based measurement using a load cell
Collection area	400 cm²
Measurement resolution	0.001 mm
Measurement accuracy	±0.2 mm
Reservoir capacity	3000 cc
Measured parameters	Total rainfall, partial rainfall, average rainfall rate (last minute and last hour), internal temperature

Measurement and Output
Reservoir discharge	Automatic discharge
Retention system	Integrated retention valve
Retention function	Holds incoming rainfall during discharge to help prevent data loss
Digital communication	RS485
Communication protocols	Modbus-RTU or ASCII proprietary protocol
SDI-12 interface	Version 1.3
Pulse output	Isolated voltage-free normally open (NO) contact
Pulse operation	Simulates a tipping bucket rain gauge
Pulse generation	Pulse trains at 1-minute intervals based on rainfall measured during the previous minute

Data Management and Diagnostics
Data storage	Non-volatile memory
Data retention	Retains recorded rainfall data during power failure
Self-diagnostics	Periodic automatic operational checks
Fault indication	Reports detected anomalies

Construction and Installation
Construction material	Corrosion-resistant materials
Structure	Compact design
Measuring mechanism	No moving parts in the measuring principle
Standard installation	Ground installation
Support feet	Three height-adjustable feet
Optional installation	Raised installation using ACCR003 support and a mast