Introducing our first Infrared Optical Rain Gauge
Rainfall measurement shouldn’t rely on 50-year-old mechanics.
TruMet PW100 is an infrared optical rain gauge. It replaces tipping buckets with a solid-state, high-precision optical system designed for today’s rainfall patterns: heavier bursts, longer extremes, and tighter reporting demands.
Whether you manage national networks, critical infrastructure, renewables, flood modelling, or smart-city systems, the PW100 delivers what older gauges can’t – accuracy in the extremes, reliability without moving parts, and the freedom from continuous maintenance cycles.
Why TruMet optical rain gauge exists
Rainfall has changed. Monitoring hasn’t.
The operational pain points are well-known:
- Undercounting during heavy rain - buckets can't tip fast enough
- Clogging - leaves, pollen, insects, ice
- Mechanical drift - accuracy falls over time
- High maintenance overheads - sending teams for cleaning, calibration, repair
- Slow issue detection - faults often discovered too late
- Large-scale deployments become expensive - ongoing maintenance = OPEX drain
National weather services and infrastructure operators around the world are now shifting from “acceptable error” to “no room for doubt”.
Your network shouldn’t depend on instruments that work until rainfall becomes interesting.
Our TruMet PW100 gives weather service agencies, integrators, and infrastructure operators a modern, low-maintenance alternative. Designed and built for accuracy, durability, and high-frequency reporting.
How they work
A modern optical rain gauge built for accuracy and uptime
TruMet PW100 is a solid-state, optical rainfall sensor designed to replace the limitations of tipping buckets with a high-precision, low-maintenance alternative.
Core Benefits:
- Zero moving parts - No mechanical wear, no drift
- No clogging - no funnels, no collection chambers
- Accurate across the full rainfall spectrum - From drizzle to high-intensity events
- True maintenance savings - Operational cost reduction across regional networks
- Rapid deployment - Lightweight, compact, easy to install
- Consistent long-term performance - Designed for long life reliability
- Lower lifetime cost vs tipping buckets - Fewer callouts, fewer replacements
PW100 Optical Rain Gauge
Dedicated rainfall sensor. Add to existing systems or replace failing tipping buckets.
GMX603 Weather Station
Full environmental monitoring. Six sensors, one station, complete weather data.
Discover how TruMet PW100 can modernise your operation.
How it compares: Gill Optical Rain Gauge vs Tipping Buckets
| Requirement | Tipping Bucket | Gill Optical Rain Gauge |
|---|---|---|
| Moving parts | ❌ Yes | ✅ None |
| Maintenance burden | ❌ High | ✅ Near zero |
| Clogging | ❌ Common | ✅ Rare |
| Lifetime cost | ❌ High (service-heavy) | ✅ Low (minimal upkeep) |
| Deployment speed | ❌ Slow (levelling, calibration) | ✅ Fast (plug-and-measure) |
Who the PW100 optical rain gauge is designed for:
- Meteorological agencies High-resolution rainfall data at national scale without the operational burden
- Renewable energy operators Weather-dependent asset protection with reliable precipitation input
- Smart city programmes Low-maintenance rainfall nodes for dense urban networks
- Flood forecasting & emergencies response teams Sharper data for faster, more accurate modelling in extreme events
- Transport & aviation authorities Track sudden rainfall changes affecting safety and operations
- Universities & research institutes Precision data for climate studies, hydrology, and environmental modelling
Complete technical specifications, performance data, and integration details.
Why accuracy matters
- Insurance, claims, and risk assessment
- Reservoir operations
- Stormwater management
- Agricultural optimisation
- Flood modelling & early warning systems
- Renewable energy operations
- Research-grade environmental monitoring
- Urban infrastructure planning
Rainfall is no longer a “background metric.” It’s a core input to critical decisions.
When rainfall intensity spikes, the data must be right. Gill’s present weather sensor delivers accurate, real-time rainfall information that enables safer decisions and reduces downstream costs.
Low-maintenance operation
No buckets. No bearings. No recalibration cycles. Just consistent data – every minute, every storm.
Long-term cost efficiency
Cuts ongoing cost through zero moving parts, no recalibration, no clogging-related callouts, longer service intervals, and Faster field deployment.
Easy network integration
Designed with tipping bucket type output to be a direct replacement: No complex programming, minimal amount of power to the sensor, up and running in minutes.
Real world outcomes
Increased network reliability
No moving parts means fewer failures, fewer interventions, and fewer gaps in your rainfall data.
Lower lifetime cost
Operators report significant lower operational expenditure when switching from tipping buckets to solid-state alternatives.
Improved modelling input
Fewer errors → better flood forecasting, hydrological modelling, and environmental analysis.
Compatibility across systems
From legacy loggers to modern cloud platforms, our ORG fits.
Specification Snapshot
- Measurement type: Optical, solid-state
- Output: Pulse (Contact Closure)
- Rain parameters: Accumulation
- Maintenance: Low
- Housing: Robust, field-ready design
- Mounting: Quick-fit and retrofit options
- Operating range: suitable for all rainfall zones, including tropical
