t041-TPW Weighing Rain & Snow Gauge
Key Benefits
- Measures all precipitation types — rain, snow, sleet, hail and mixed
- 1500 mm capacity — suitable for high-precipitation mountain environments
- 0.001 mm resolution — the highest precision for climatological reference
- ±0.1% accuracy — meets WMO Class A precipitation measurement standards
- Heated design prevents ice formation in the collector and mechanism
- Vibration compensation eliminates wind-induced false readings
- IP65 housing for long-term unattended deployment in extreme conditions
- RS485 (Modbus), SDI-12 and pulse output interfaces
Key Specifications
Four numbers that define why the t041-TPW is specified for reference-grade and challenging-climate precipitation monitoring.
Measurement Range
Total accumulated precipitation capacity — covers even the highest annual rainfall and snowpack depths found in mountain and tropical environments.
Resolution
Sub-millimetre resolution — capturing light drizzle, mist and trace precipitation events that tipping bucket gauges miss entirely.
Accuracy
±0.1% of reading across the full measurement range — compliant with WMO standards for Class A precipitation measurement.
Operating Temperature
110°C operating range with integrated heating for cold-climate deployments — from arctic monitoring stations to hot desert environments.
Full Technical Specifications
Integration-Ready Output
The t041-TPW supports the three standard interfaces used across professional hydrometeorological networks — ensuring compatibility with SIAP+MICROS dataloggers, third-party systems and legacy infrastructure.
RS485 — Modbus RTU
Industry-standard serial communication for connection to SIAP+MICROS dataloggers (including the e021 MegaSUM), SCADA systems and telemetry units. Supports multi-drop bus wiring for compact multi-sensor installations.
SDI-12
Universal environmental sensor protocol supported by the majority of hydrometeorological dataloggers. SDI-12 simplifies wiring and allows multiple sensors on a single bus alongside other meteorological instruments.
Pulse Output
Classic reed switch or optocoupler pulse output for direct connection to legacy dataloggers and simple counting systems — maintaining backward compatibility with older station infrastructure.
Why a Weighing Gauge?
The weighing principle offers fundamental measurement advantages over tipping bucket technology — especially for solid precipitation and high-accuracy climatological monitoring.
Solid Precipitation
Snow, sleet and hail accumulate in the collector and are weighed continuously — no melting, no heating delay and no missed events during blizzards.
Trace & Light Rain
0.001 mm resolution captures trace precipitation and light drizzle that falls below the 0.2 mm tip threshold of standard tipping bucket gauges.
High Intensity Events
Up to 120 mm/min intensity capacity — tipping bucket mechanisms undercount during extreme convective rainfall; the weighing method captures the full total without saturation.
Vibration Compensation
Integrated vibration compensation eliminates false weight changes caused by wind gusts — a critical feature for exposed mountain station deployments.
Built for Extreme Conditions
The t041-TPW is engineered for the most challenging precipitation monitoring environments — cold-climate mountain stations, remote unattended sites and national reference networks where data quality cannot be compromised.
- Heated collector prevents ice bridging and snow adhesion
- Heated mechanism protects the weighing cell in sub-zero conditions
- IP65 weatherproof housing for long-term outdoor deployment
- Vibration compensation algorithm filters wind-induced noise
- Anti-evaporation oil layer option preserves accumulated water
- Stainless steel and UV-stabilised components for longevity
- No moving parts in the weighing mechanism — low maintenance
- WMO, ISO and CEI/IEC standards compliant
Where It's Used
The t041-TPW is the gauge of choice wherever tipping buckets fall short — in cold climates, reference networks and applications demanding the highest measurement accuracy.
Part of the SIAP+MICROS Family
The t041-TPW integrates seamlessly with SIAP+MICROS dataloggers and telemetry systems — pair it with the e021 MegaSUM for full cellular, Wi-Fi or satellite telemetry, or with the DA18K for a compact solar-powered field station.
More SIAP+MICROS Precipitation Sensors
The t041-TPW sits alongside the full SIAP+MICROS precipitation sensor range — choose the right gauge for your climate, accuracy requirement and budget.
TP200 Tipping Bucket Rain Gauge
0.2 mm resolution tipping bucket — the cost-effective choice for liquid precipitation in temperate climates.
View Productt043 Extreme Climate Precipitation Sensor
Precision snow and mixed precipitation sensor engineered for arctic and mountain environments.
View ProductTBAR Digital Barometer
High-accuracy ±0.5 hPa barometer for professional meteorological stations.
View ProductMeasure Every Drop — and Every Snowflake
Contact IES to discuss the t041-TPW for your precipitation monitoring network, or to request a full technical datasheet and integration guide.